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  • High Frequency / High Ripple Resonant Chargers: Good or Bad? (part-3)

    High Frequency / High Ripple Resonant Chargers: Good or Bad? (part-3)

    Jun , 13 2022
    Battery charging is a complex electrochemical process, in which the discharged electric energy is replenished from the electric power grid. This is accomplished using a battery charger, which is an electrical/electronic device that converts the incoming AC line voltage into a regulated DC voltage to meet the charging needs of the respective battery. In a series of articles we are going to explain ...
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  • What are some key practices for a Fast or Opportunity charge operation?

    What are some key practices for a Fast or Opportunity charge operation?

    Jun , 20 2022
    What are the operational implications of charging at a higher rate? Initial Cost: Initial charger investments may cost up to 5 times more than a conventional charger operation, especially if the charging system utilizes a dedicated charger for every battery. Infrastructure Change: Once committed to the Fast or Opportunity charge process, it can be very difficult to transition back to Conventional ...
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  • What types of monitoring and recording devices are suited for high rate charging?

    What types of monitoring and recording devices are suited for high rate charging?

    Jun , 20 2022
    The higher the charging rate, the more critical it is to monitor the charging process to prevent permanent capacity loss. In efforts to preserve battery life, Fast and Opportunity charging incorporates a method of monitoring battery electrolyte temperature and/or internal resistance and adjusting charging current as necessary. Although these monitoring devices can have a very positive impact on ba...
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  • How to choose UPS power supply for the computer room? (Part-2)

    How to choose UPS power supply for the computer room? (Part-2)

    Jun , 27 2022
    Enterprise data centers are becoming more and more important nowadays. How to ensure the stable operation of enterprise data centers has become a very critical factor. UPS is a standard accessory for many enterprises in data centers, so how to choose a UPS power supply suitable for enterprise applications? In our last article we discussed about some options, now we are going to discuss in details....
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  • Efficiency of DC power system

    Efficiency of DC power system

    Jun , 27 2022
    In this article we will explain the efficiency of DC systems and progress to AC systems on the next article. In very basic terms, efficiency is the measure of how much power is not being wasted by a system. More waste is less efficient. In electrical systems, we measure the power entering a system in watts; the unit of measure for work performed. Efficiency is the ratio of (Power-In) -vs. - (Power...
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  • Explore and analyze the thermal power of Li- ion cells and battery packs (part-1)

    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)

    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)

    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)

    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)

    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

    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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  • Theoretical introduction to Switch mode converters

    Theoretical introduction to Switch mode converters

    Jul , 18 2022
    Switch mode power conversion technology dominates nearly every segment of the economy, including demanding aerospace and military power systems that impose requirements more demanding than those imposed by power utilities or industry. Switch mode converters are, for example, successfully hardened against the effects of frequent lightning strikes on aircraft, against the effects of nuclear electrom...
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