Author ：Iflowpower – Portable Power Station Supplier
Lithium-ion battery parallel charge method, lithium-ion battery in parallel? Lithium-ion battery is connected in parallel. The rechargeable lithium-ion battery is connected in parallel to select the same capacity of the same capacity to be connected. Before the connection, each battery is charged or discharged to the same voltage and then connect, preferably each battery plus a separate protective plate.
Lithium-ion battery parallel charge method Lithium ion battery in parallel is for new capacity, and therefore, the lithium-ion battery is connected in parallel with different design characteristics compared to single-cell lithium ion batteries, and it is important to reflect the charging current design and parallel battery. Consistency. When the lithium ion battery is connected in parallel, each lithium-ion battery should ensure equalization charging, otherwise it will affect the performance and life of the entire group of lithium-ion batteries during use.
Commonly used balance charging techniques are: constant shunt resistance equalization charging, disconnected shunt resistance equalization, the average battery voltage equalization charging, switching capacitance equalization charging, buck converter equalization charging, inductance equalization charging, etc. Lithium-ion batteries should pay attention to several problems: 1. Lithium-ion batteries with protective boards and without protective panels cannot be charged in parallel.
Battery without protective panels can be easily charged. 2. Conghua battery usually remove the protective board that the battery comes, uniformly uses a battery protection board.
3, the charging battery, if there is no lithium-ion battery protection plate, the charging voltage must be limited to 4.2V, can not use 5V charger. The lithium-ion battery will have a charging protection chip to charge the lithium-ion battery, and the lithium-ion battery manufacturer has fully considered the characteristics of the lithium-ion battery in parallel when making a parallel lithium-ion battery, and is also in accordance with the above requirements Design and battery selection, so, the user should charge according to the clashot of the parallel lithium-ion battery, prevent incorrect charging to damage to the battery.
How does a lithium ion battery in parallel? Use the lithium-ion battery to be used in series, which sounds like it is very simple, but to follow some simple rules to prevent unnecessary problems. Do not mix different brands of lithium-ion batteries, different capacities, or old lithium-ion batteries together, select the battery. When the battery is low, replace all batteries.
When the lithium ion battery is used in series, it is necessary to use the same type of battery. Pay attention to the polarity of the battery. If there is a polarity of a battery, the voltage of the entire battery is reduced, not a new voltage.
If you use different capacities or new old lithium-ion batteries, it is possible to show the phenomenon of leakage, zero voltage. This is due to the charging process, and some batteries are overcharged during charging. Some batteries are not filled with electricity, and the battery has high capacity is not filled, and the capacity is low.
Such a vicious circle, the battery is damaged and the liquid or low (zero) voltage. General lithium-ion battery strings are used in parallel to perform lithium ion battery core pairs, paired standard: lithium ion battery core voltage difference ≤10mV, lithium ion battery core internal resistance ≤ 5mΩ, lithium ion battery core capacity difference ≤20mA. The above is a lithium ion battery parallel charge method and a lithium ion battery in parallel.
Everyone should pay attention to the above matters when parallel the lithium-ion battery!.
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