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How to judge the consistency of lithium battery pack
126 2024-01-09
The consistency of lithium-ion battery pack is good or bad, and special tools should be used to measure the capacity, internal resistance, and charge and discharge curve. This requires a single measurement of the capacity, internal resistance and discharge platform of a single battery, as well as the technological level of the battery combination, to see the requirements of specific products on battery performance. Battery inconsistencies (within certain limits) can only be resolved with an external battery pack management system, which is a must. Measure the capacity internal resistance and discharge platform of a single battery, and look at the technological level of the lithium-ion battery combination to see the requirements of specific products for battery performance.
The consistency of the lithium-ion battery pack refers to the convergence of the main characteristics of a group of lithium-ion battery parameters, the consistency of the battery refers to the consistency of the battery weight, voltage, multiple strings of cells in the same battery pack, each parameter, it is best to all be in a small range, is good for consistency.
The higher the consistency of the battery produced by the same material and the same process in capacity, internal resistance and charge and discharge curve, the better. Whether the battery can be formed into a battery pack on a large scale is very critical, and the larger the battery pack size, the higher the consistency requirements.
Consistency is the consistency of data, in a distributed system, it can be understood as the value of data in multiple nodes is consistent. At the same time, consistency also means that the basic characteristics or characteristics of the transaction are the same, and other characteristics or characteristics are similar.
Lithium-ion batteries can be broadly divided into two categories: lithium-metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain lithium in the metallic state and are rechargeable. The safety, specific capacity, self-discharge rate and performance-price ratio of lithium-metal batteries, the fifth generation of rechargeable batteries, are superior to lithium-ion batteries.
The chemical characteristics of lithium metal are very active, and the processing, preservation and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium-ion batteries have become the mainstream.
Summary: Improving the consistency of lithium-ion battery packs is a systematic project, which should be considered by many aspects such as battery design, production, quality control, application and maintenance. The above respectively introduced the causes of the lithium ion battery pack inconsistency, harm and solution measures, I hope to help you.