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The so-called battery is an electrochemical device that stores chemical energy and releases electrical energy when necessary. It uses a lead substrate grid filled with spongy lead (also known as a lattice) as a negative electrode, a lead substrate grid filled with lead dioxide as a positive electrode, and dilute sulfuric acid with a density of 1.26--1.33g/mlg/ml is used as the electrolyte. When the battery is discharging, metal lead is the negative electrode, which undergoes an oxidation reaction to generate lead s

The materials of lithium-ion battery packs are mainly composed of positive electrode, negative electrode, electrolyte, separator and outer shell. ① Positive electrode material---The positive electrode material accounts for 30%--40% of the cost of the lithium-ion battery. The performance of the positive electrode material directly affects the performance of the lithium-ion battery, and its cost also directly determines the cost of the battery. Using a carbon electrode that can absorb lithium ions, during discharg

In the next few years, driven by the rise of the global lithium-ion battery market, the global lithium-ion battery copper foil market will continue to grow rapidly. GGII expects a compound growth rate of 24% in the next four years, and the output will exceed 200,000 tons by 2020. ① Important countries in the world vigorously develop the new energy vehicle industry, and the demand for lithium battery copper foil for power lithium batteries will maintain a high upward trend, becoming an important application marke

1. Lithium primary battery Lithium primary batteries have very low self-discharge and can be stored for 3 years. The effect will be better when stored under refrigeration. It is a good idea to store lithium primary batteries in a low temperature place. 2. Lithium-ion battery Also called secondary lithium-ion battery. It can be stored for more than half a year at 20°C due to its low self-discharge rate and most of the capacity can be recovered. Lithium-ion batteries that have been stored for a long time sho

1. Charging 1-1 Charging current: The charging current shall not exceed the maximum charging current specified in the specification (generally 0.5~1.0C or below), and using a charging current higher than the recommended current may cause the charging and discharging performance, mechanical performance and safety of the battery. performance issues and may cause heat or leaks. At present, the 5C current charging model aircraft battery sold in the market is not recommended to use 5C charging frequently, so as not t

The negative electrode material of lithium titanate battery has the advantages of small size, light weight, high energy density, good sealing performance, no leakage, no memory effect, low self-discharge rate, rapid charge and discharge, long cycle life, wide working environment temperature range, safety It has the characteristics of stable green environmental protection and so on, so it has a very wide application prospect in the field of communication power supply. Lithium titanate battery can be used safely i

1. The lithium iron phosphate battery pack has relatively high energy density and strong endurance, and with the application of lithium iron phosphate cathode material, the life and safety of traditional carbon anode lithium ion power lithium batteries have been greatly improved, and the preferred application in the field of energy storage. 2. The lithium-ion battery pack has a long cycle life. In the future, the shortcomings of relatively low energy density, weak endurance and high price make the application of

Lithium-ion battery pack equalization charging method In order to reduce the influence of unbalance on the lithium-ion battery pack, an equalization circuit is used during the charging process. At present, there are two main methods for balanced management of lithium-ion battery packs, energy consumption type and feedback type. The energy consumption type refers to supplying a parallel branch to each single cell, and transferring the electric energy of the single cell with excessive voltage to achieve the pur

There are two typical follow-up paths for lithium-ion battery recycling, cascade utilization or direct material recycling. 1. Cascade utilization and raw material recovery For retired power lithium-ion batteries, those who take the road of tiered utilization are to recycle materials after the tiered utilization; for direct material recycling, the batches are too small, there is no history to check, and the safety monitoring is unqualified, etc. The pursuit of economic benefits is the driving force behind cor