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How to do the SOC-OCV test for Lithium batteries?

Apr , 06 2022

OCV is very important for SOC estimation. It is a function of cell SOC and temperature. There are two methods to measure the OCV, namely coulomb titration and voltage relaxation. The former discharges and charges the cell with the same low current while measuring the terminal voltage. The OCV is defined as the average value of the charge and the discharge terminal voltage. The latter determines th...

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Some FAQ about the Lithium batteries for UPS

Apr , 06 2022

What are the primary benefits of switching to lithium based UPS batteries? The most common reason cited is the significantly longer service life. Lithium also provides a greater cycle life (the number of charge/discharge cycles ranges from extends into the thousands, versus approximately 500-600 for VRLA batteries), as well as a longer warranty. Furthermore, the lighter weight and smaller footprin...

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Battery charger options (part-1)

May , 16 2022

In this series of articles we will discuss the options you can have in your battery charger. You can check out these options for choosing your desired battery charging solution. Special Ground Bus This is an appropriately sized ground bus bar mounted inside the battery charger to allow customers to tie ground connections inside the charger to the external system ground. The ground bus bar allows f...

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Explore and analyze the thermal power of Li- ion cells and battery packs (part-1)

Jul , 04 2022

Temperature is very important for lithium- ion batteries. Low temperature will reduce the electrical performance of lithium- ion batteries (capacity, rate performance), but it can improve the storage life of lithium- ion batteries. High temperature can improve electrical performance (capacity, rate performance), but It will reduce the stability of the electrode/electrolyte interface and cause a ra...

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Explore and analyze the thermal power of Li- ion cells and battery packs (part-2)

Jul , 04 2022

In order to ensure the consistency of the ambient temperature, an incubator is used for precise temperature control, the battery charging and discharging equipment adopts the DigatronBTS-600 equipment, and the Agilent 34970A equipment is used to collect the temperature information of the battery. When the above-mentioned battery is at an ambient temperature of 27°C, the temperature change curve of...

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Explore and analyze the thermal power of Li- ion cells and battery packs (part-3)

Jul , 04 2022

1. Influence of ambient temperature: The following figure shows the battery temperature rise curve (average temperature of 5 sampling points) during 1C charge and discharge process of 55Ah battery at ambient temperatures of 20°C, 27°C and 40°C. From the figure, we can It can be seen that the charging time of the battery at 20°C is 74min and the discharge time is...

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Explore and analyze the thermal power of Li- ion cells and battery packs (part-4)

Jul , 11 2022

Continuing from last week’s article, this week we are going to discuss other parameters. 3. Influence of charge and discharge rate The charge and discharge rate characterizes the charge and discharge current of the lithium- ion battery. Therefore, the charge and discharge rate must have a very significant impact on the heat generation power of the lithium-ion battery. , the final temperature and t...

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Explore and analyze the thermal power of Li- ion cells and battery packs (part-5)

Jul , 11 2022

Continuing from last week’s article, this week we are going to discuss other parameters. 4. The temperature rise and temperature difference of the battery pack under different working conditions On the basis of the above-mentioned single cell heat generation model, the battery pack model was established by using SOLIDWORKS software to simulate the heat production and the battery pack under differe...

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Air Transport Requirements for Lithium Ion Batteries

Jul , 11 2022

Speaking of UN38.3, I believe it will be familiar to those engaged in the lithium battery industry. UN38.3 refers to Section 38.3 of the United Nations Manual of Tests and Criteria for the Transport of Dangerous Goods specially formulated by the United Nations for the transportation of dangerous goods, referred to as UN38.3. , high and low temperature cycle, vibration test, impact test, 55 ℃ exter...

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Issues related to Battery for the datacenter application

Jul , 22 2022

The entire corporate world changed their culture in a very short time, to a predominantly work-from-home model due to Covid-19, many data center and IT professionals have been scrambling to manage this sudden shift in their network demands. The IT sectors are losing many jobs rapidly; the monthly loss is huge in the industry’s history. The news was a harsh reminder that no industry will be spared ...

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What is a Micro Data center?

Aug , 01 2022

When people think about the data center, they always think that in a very large building. There are a lot of cabinets neatly arranged, cabinets filled with servers, and servers are shining positive light. It looks cool. A data center is a dedicated space within a building, or a group of buildings used to house computer systems and associated components, such as teleco...

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Overview of Lithium Battery Safety Testing- part-2

Aug , 08 2022

For lithium batteries, there are some popular standards that Battery Lab tests to most often. In this sequel of articles we are going to discuss about these popular standards one by one. Today we are going to discuss about the UL 1642– UL Standard for Safety of Lithium Batteries. UL 1642 These requirements cover primary (no rechargeable) and secondary (rechargeable) lithium batteries for...

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