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Why do lithium battery cells need to be tested with battery cell capability grading machine
Apr 16 , 2021
You’ll see, hundreds of batteries are clamped into vertical and horizontal battery cell capacity grading machine in battery cell manufacturing factory or battery pack assemble plant. Row after row, each cabinet can put hundreds of cells, namely hundreds of test points. The lithium cell is converted here to get the capacity, and know the size of the capacity, is the capacity. Through the capacity g...
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What’s the function of lithium battery formation?
May 08 , 2021
A lithium-ion Battery formation is activated by a single charge just after it is produced, similar to the way a floppy disk is "formatted". The battery can only start charging and discharging normally after the transformation is completed. The principle is simply that the first charge of the battery activates the active material inside the battery and creates a dense film on the surface of the ano...
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Why did the PACK plant need buy a battery sorter?
May 14 , 2021
When the lithium battery cell leaves the factory, the cell factory will carry out capacity test on each cell, so as to divide the cell into three grades: A,B and C. Then on what basis are they divided？ Class A: capacity, size, internal resistance, voltage and other parameters can meet the standard and excellent performance of the cell is generally defined as class A. Class B: the capacity, size, v...
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Lithium-ion battery winding and stacking machine which is better? What are the advantages and disadvantages of stacking and winding processes?
May 20 , 2021
With a large number of lithium-ion batteries used as power in mobile phones, digital products, laptop, drone, model airplane, portable energy storage, military industry, new energy vehicles, medical equipment and other fields, the lithium ion battery industry at home and abroad has achieved rapid development. As an important part of lithium-ion battery manufacturing, Stacking and winding technolog...
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Why does the battery leak and how to prevent it
May 28 , 2021
If the liquid leaks, the main reasons are: 1.The internal pressure is too large; 2. The external package is unqualified. In the process of battery manufacturing, if the following problems occur, it is easy to cause battery leakage: 1. When welding the battery shell and cap, the welding is not firm, not sealed, there are leaks, virtual welding, and the weld has cracks and other problems; ...
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Ultrasonic metal spot welder
Jun 11 , 2021
Ultrasonic metal spot welder: It is similar to friction welding, but there are difference, Ultrasonic welding takes a short time and the temperature is lower than recrystallization; It is also different from pressure welding because the static pressure applied is much less than pressure welding. It is generally believed that in the initial stage of the ultrasonic welding process, the tangential vi...
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What is a lithium-ion battery BMS? Why do need a BMS lithium-ion battery management system?
Jun 18 , 2021
When it comes to lithium-ion batteries, it is often associated with some terms such as lithium-ion battery protection boards and lithium-ion battery management systems. As we all know, BMS battery management system mainly appears in lithium-ion batteries. Lead-acid batteries generally do not have this management system. Lithium batteries have one more BMS battery management system to protect cells...
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What are the important materials for lithium battery packs?
Jun 23 , 2021
Introduction to the basic structure of lithium battery pack: Important materials: positive electrode, negative electrode, electrolyte, separator Structure: round, square; laminated, winding Form: polymer (soft packaging), liquid lithium ion (steel shell) positive electrode Cathode materials account for 30%-40% of the cost of lithium batteries, which directly affect the energy density and performan...
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