Industry Knowledge

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

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

Relevant steps of lithium-ion battery assembly technology: 1. Lithium-ion battery material processing Some materials used in secondary batteries, such as lithium ions, require special treatment. Electrodes should be processed at high speed without damaging the fragile active material. In the electrolyte, special consideration is given to preventing the occurrence of precipitation and corrosive gases. 2. Cam unit If the machine is constructed with air cylinders or AC servo actuators with a takt time of less

The common fast charging technologies on the market today include: Qualcomm's QC2.0, MTK's PE, and VOOC; the core of Qualcomm's QC2.0 technology is to reduce the charging current by increasing the charging voltage, thereby reducing the power of the charging line. Consumption, that is, the idea of ​​reducing consumption. It requires a corresponding step-down and decompression circuit on the mobile phone side. The biggest advantage of QC2.0 is that the technical compatibility and inheritance are very good

1. Dry uniaxial stretching production line; 2. Dry biaxial stretching production line; 3. Wet biaxial stretching production line. ●Dry uniaxial stretching production line The dry uniaxial stretching production line uses PP or PE as the important raw material, mixes various grades of auxiliary materials and mixes them fully, extrudes them by the casting method, and then passes through the multi-layer compounding machine and then uniaxially stretches them. The stretched multi-layer separator is layered and cut

1. Feeding Transfer the battery to the designated position, and the robot automatically grabs it and sends it to the module assembly line. 2. Give the cell a bath and the plasma cleaning process Clean the surface of each cell. Ion cleaning is used here to ensure that the contaminants in the process do not adhere to the bottom of the cell. 3. Combine the cells and glue the cells Before assembling the cells, the surface should be coated with glue. In addition to the fixed use, the use of glue can also serve

As the core of the power lithium-ion battery, the cathode material accounts for about 30~40% of the manufacturing cost of the new energy vehicle. At present, there are three important types of large-scale market applications, including lithium iron phosphate, lithium manganate, and ternary materials nickel-cobalt lithium manganate and nickel-cobalt aluminate. Among them, lithium iron phosphate and lithium manganate materials do not have much room for technological breakthroughs in basic research, and their energy d

Due to the high energy density of iron-lithium ion batteries, in the overcharged state, the energy will be excessive when the battery temperature rises, so the electrolyte decomposes and gas occurs, which is easy to increase the internal pressure and cause the risk of spontaneous combustion or rupture; on the contrary, in the overdischarged state When the electrolyte is decomposed, the characteristics and durability of the battery are deteriorated, the number of rechargeable times is reduced, and the service life o