1.5V rechargeable battery

　　The safety factor of positive-grade rechargeable batteries made of ternary materials is higher, but the working voltage is too low. When used on mobile phones (the cut-off voltage on mobile phones is generally at the upper and lower levels), there will be a significant feeling of insufficient capacity.

　　Ternary lithium batteries have a wide range of operating temperature adaptability, and the maximum electric heating value reaches 350℃-500℃. Compared with ordinary lead-acid batteries, its energy storage capacity is stronger, and its material is also lighter. Because the ternary lithium battery is a rechargeable lithium battery with stable output voltage, high output voltage, stable performance, large volume, long service life, wide operating temperature range, good safety factor, and zero pollution to the environment, it is in the development direction There is a lot of room for improvement on the road surface, but it still needs to be explored to improve its shortcomings.

　　Will temperature harm ternary lithium batteries?

　　For the actual application of lithium batteries, the high-temperature reliability of the raw materials must also be considered. Generally, increasing the temperature can improve the kinetic model conditions of ternary lithium batteries, thereby improving the performance of the battery. This is from the temperature of the battery at 60°C. It seems that the capacity is fully utilized, but high temperature has a certain impact on the reliability of the circulation system of raw materials.

　　For example, at room temperature of 20°C, the three materials of the ternary lithium battery have similar cycle characteristics during the first 50 cycles. However, when the temperature rises to 60°C, the NMC811 and NCA materials can cycle for 50 times. The volume maintenance capacity is significantly smaller than that of NMC622 material, indicating that NMC622 material has good heat resistance.

　　In essence, as the frequency of delithiation of NMC materials increases, the impact of the charging voltage, oxidation voltage, current, and temperature of ternary lithium batteries on the circulation properties of NMC and NCA materials will cause NMC materials to The structural reliability is reduced, thereby jeopardizing its circulatory system characteristics.

　　In addition, high temperatures will have adverse effects on the reliability of raw materials, thereby reducing the performance of the circulation system. In view of the characteristics of NMC materials, a new charging system is designed, which not only has a limit of the end volume, but also has charging voltage adjustment to ensure that the battery has the same capacity at each charge, thereby eliminating the need for batteries to be charged. The battery charging volume attenuation coefficient caused by over-potential difference further improves the cycle system characteristics of ternary lithium batteries.

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