The Lifespan of Lithium Battery Cells: Who Determines It?
For those entering the lithium battery repair industry, considering the use of active or charge equalizers can be a valuable choice. Meanwhile, lithium battery ...
For those entering the lithium battery repair industry, considering the use of active or charge equalizers can be a valuable choice. Meanwhile, lithium battery assembly factories that prioritize quick shipments and rely on high-quality cells can opt for discharge equalizers and passive equalization protection boards. When it comes to the secondary utilization of automotive and B lithium batteries,Battery recycling machine active equalization with a protection board is often the preferred option.
The terminology surrounding lithium battery equalization, including active and passive equalization, discharge and charge equalization, can often be perplexing. Let's clarify these concepts.
Active equalization, sometimes referred to as energy transfer equalization, operates on the principle of transferring power from the highest voltage string of batteries to the lowest voltage string. This method of energy transfer results in minimal power loss and enables the design of smaller devices.cylindrical battery pack mahcine However, its one-to-one power transfer process makes it relatively slower, making it more suitable for direct battery shipment.
Passive equalization, on the other hand, operates as a consumption-based equalization method, balancing cell voltage by dissipating power through resistors. Passive equalization typically involves low currents,cell stacking machine making it ideal for leveling voltage differences arising from variances in cell self-discharge power. By increasing the current to 10 or 20 amps, passive equalization can transform into discharge equalization, allowing it to operate efficiently across multiple channels simultaneously.
Discharge equalization can swiftly level the voltage of the battery pack, making it suitable for expedited shipment. Charge equalization, on the other hand, performs charge and equalization simultaneously, eliminating the need to wait for the batteries to reach full charge before equalization begins.
Charge equalization, adopting the lowest voltage group as a reference, can swiftly level the voltage of the battery pack, making it ideal for rapid shipment. One notable advantage of the Charge Equalizer is its ability to balance cells without the need to wait until the battery is fully charged.
The most battery-friendly approach is passive equalization combined with full charge due to its lower current. However, even if the voltage of the battery pack is equal after full discharge, it may differ after full charge if there are issues with the batteries themselves. The use of an active equalizer under these conditions may result in a reduction in the actual life of the cells.
In summary, active equalizers can extend the overall lifespan of the battery pack but may simultaneously reduce the lifespan of individual cell strings within the pack. If the cells are free from issues and only exhibit voltage differences, the battery life can be quite long, even without the use of an equalizer.