Customers are switching to 24V or 48V for cheaper, more efficient setups in medium, to big projects. A higher voltage battery pack can support an enormous solar array. According to the cathode material, 48v solar battery lithium-ion can be further categorized as ternary lithium batteries, lithium iron phosphate batteries, or lithium titanate batteries.
So, what exactly is a 48V lithium-ion battery?
While the typical operating voltage range for a single battery on the market is 3.7v, this is insufficient for many applications. The advent of the battery pack and the modular battery has substantially boosted the voltage of existing batteries. Nowadays, 48v lithium-ion batteries are widely employed in most high-voltage batteries.
Compared to lead-acid batteries, 48V lithium-ion batteries are more compact, lighter, and more temperature-tolerant. They also have more significant charging and discharging efficiency, greater safety and stability, a longer service life, and a smaller carbon footprint.
Board for shielding a 48V lithium-ion battery
Protective circuit board for 48V lithium-ion batteries. Electronic circuits make up the bulk of this device, allowing for constant monitoring of the battery cell voltage and charging/discharging circuit current in temperatures ranging from -40 degrees Celsius to 85 degrees Celsius, as well as for timely on/off control of the current circuit.
To extend the battery’s useful life and prevent damage from over-discharge, a Li-ion battery protection board can monitor the pack’s charging and discharging processes and the individual batteries’ over-voltage, over-current, over-temperature, under-voltage, and short-circuit states. The safety board for a lithium battery is a crucial part of every lithium battery.
BMS for 48V Li-ion Batteries
The 48V Li-ion BMS detects the state of each cell in the Li-ion battery pack, then uses this information to make control adjustments and implement strategies for the battery pack as a whole that will allow for optimal charge and discharge management of the battery pack and each cell. The components of a lithium-ion battery management system include the management host (CPU), the voltage and temperature collection module, the current collection module, and the communication interface module.
Safety Measures for 48V Lithium-ion Batteries
First, a lithium-ion battery kept for a long time without being used should have its charge level between 50 and 60 percent, with new batteries added every three months and fully charged and drained once every six months.
To prevent the lithium-ion battery from being damaged during transit, two things must be avoided extrusion and collision, as well as moisture and humidity. It shouldn’t be any colder than 0 degrees Celsius when it’s cold outside. The best conditions for storing are between 5 and 10 degrees Celsius. Fourth, avoid using or storing your lithium-ion battery in extreme temperatures (direct sunlight or inside a hot automobile) because this can lead to the battery overheating, catching fire, or losing functionality and will drastically reduce the battery’s lifespan.
Lithium ternary and lithium iron are the most common types of lithium used in batteries. Lead-acid batteries typically last between 300 and 350 cycles, while ternary lithium batteries often last between 1000 and 2000. Lithium batteries, then, have a lifespan of roughly 3 to 6 times that of lead-acid batteries.