Application field of low temperature battery packs and correct usage

　　Author ：Iflowpower – Portable Power Station Supplier

Application area of ​​low temperature lithium ion battery packs and correct usage. The low temperature lithium-ion battery means that the working temperature is below -20 ° C, the low temperature, the positive and negative electrode, electrolyte, and adhesive, etc. of the phosphate ion battery pack.

Industry, companies and research institutions to explore and research on low-temperature performance of lithium-ion batteries, and focus on the process improvement on existing positive and negative electrode materials, as well as by increasing partial ambient temperatures of batteries for battery at low temperatures. In recent years, the application range of low-temperature lithium-ion battery packs has become more and more widely used in lithium-ion batteries, and lithium-ion batteries are widely used in hydrocarbon power systems such as hydraulic, firepower, wind and solar power station. And electric tools, electric bicycles, electric Motorcycles, electric vehicles, military equipment, aerospace and other fields.

At present, the lithium-ion battery has gradually expanded to electric bicycles, electric vehicles. Lithium-free ion battery packs are widely used in aviation, aerospace, deep sea, power supply, cold zone, rigorous process manufacturing process and methods, are also used in disaster relief, iron equipment, car backup power supply. Extreme environmental equipment such as cold clothing, anti-preventive shoes power supply.

Application areas: special weapons, aerospace, playing car equipment, polarographic examination, cold zone, electric communication, public safety, medical electronics, railway, ship, robot, etc. Correct use of low-temperature lithium-ion battery packs ● Lithium ion battery manufacturers need to overcome multiple technical bottlenecks, develop low-temperature lithium-ion battery series products. The low temperature performance of ordinary lithium-ion batteries is poor, and the lithium iron phosphate ion battery is unable to drive the electric car.

● Be sure to pay attention to waterproof when using low-temperature lithium-ion battery packs, after using some temperature and low equipment, it should be taken in time to place it in dry, properly kept in a low temperature to prevent and prevent lithium ion batteries. Improper use of misconduct. ● The energy density of the lithium-ion battery is low, with the safety and storage function of conventional lithium-ion batteries, and high and low performance.

The low-temperature lithium-ion battery pack needs to have the advantages of large discharge rate, stable product performance, high energy, good security. ● It should be noted in using a lithium-ion battery pack that although the battery is activated, it will enter the sleep state after a period of time, and the capacity is in the virtual state. However, the lithium-ion battery is easy to activate, as long as the normal charge and discharge cycle is passed through 3 times, the battery is activated, and normal capacity is restored.

Due to the characteristics of the lithium-ion battery itself, it determines that there is almost no memory effect. Therefore, the new lithium ion battery in the user's mobile phone is not particularly method and equipment. ● About the charging of the lithium ion battery, increasing the constant current current value of the constant current constant pressure charging mode within a certain current range, and does not shorten the time of the charging lithium-based ion battery.

● Suitable temperatures of lithium ion battery packs are controlled at 0 to 40 ° C, relative humidity is not more than 75% clean, dry, ventilated environment, should prevent contact with corrosive substances, away from fire and heat source. ● The normal circulation of the lithium-ion battery is approximately 500 ~ 800 times, and the lithium-ion battery to the life of life should be recovered and treated according to local law. The lithium-ion battery has a large storage capacity, stable work, and has a basic non-memory effect.

It also has advantages in adapting to the ambient temperature. Taking the lithium thionyl chloride battery as an example, the operating temperature can range from -40 ° C to + 55 ° C. Of course, when the temperature drops to zero 40 degrees, the capacity will also change, 50% of normal temperature.

Explanation of low temperature on lithium ion battery is relatively large. Should be saved at normal temperature, use. Low temperature affects lithium ion batteries The current mobile phone battery is generally a lithium-ion battery, and the chemical reaction rate of the battery will be affected by temperature.

The phone will cause the battery to chemically react back in a low temperature environment, resulting in small battery discharge currents, reducing the battery capacity, there may be fast, black screen, crash, touch screen failure, unable to access the Internet, etc. When entering the warm room from the cold outdoor, the temperature change may also cause the interior of the phone to condense water mist, a circuit board short circuit or other fault. The working principle of the lithium-ion battery is that the internal electrolyte changes through the chemical reaction, and there is current in the positive electrode.

The electrolyte movement in a low temperature environment is relatively slow, which affects the transfer activity between the lithium ions between the positive and negative electrodes, resulting in a decrease in battery charge and discharge performance. Low temperature affects the positive and negative electrode, electrolyte and adhesive of the phosphate ion battery. For example, the phosphate positive electrode itself is poor electron conductivity, which is prone to polarization in low temperature environments, thereby reducing battery capacity; due to low temperature, graphite lithium speed decreases, easy to precipitate metal lithium in the negative surface, if charging is insufficient after charging In the case of use, metal lithium can not be embedded inside the graphite, and some metal lithium continues to have a negative surface.

It is possible to form a lithium delegated crystal, affecting battery safety; low temperature, electrolyte viscosity will increase, lithium ion migration impedance In addition, in addition, in the production process of lithium iron phosphate, the adhesive is also a very critical factor, and the performance of the low temperature will have a large effect on the properties of the adhesive. In low temperature environments, lithium-ion batteries are charged with certain risks. Because of the decrease in temperature, the kinetic characteristics of the graphite negative electrode is changed.

During the charging process, the electrochemical polarization of the negative electrode is significantly agly, and the precipitated metal lithium is easily formed to form a lithium delegated crystal, wear the diaphragm and lead to a positive and negative short circuit. The above is the application area of ​​low temperature lithium-ion battery packs and the correct usage. With the further development of technology, the lithium-ion battery will have further breakthroughs in a low temperature environment.