What is the difference between lithium iron phosphate and lead battery chargers? The difference between lithium iron phosphate and lead-acid batteries is that the materials used are different, and the discharge principle is not too. Lithium iron phosphate and lead-acid batteries in the charging, the best choice of charger is the original battery charger, which will be more closely matched to the battery charging circuit, more secure.
What is the difference between lithium iron phosphate and lead battery chargers?
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Lead-acid battery and lithium iron phosphate battery charger charging control is different. The voltage level of lithium batteries and lead-acid batteries are not matched. And there are many kinds of lithium batteries, battery performance and battery protection plate parameters may not be the same. Lithium iron phosphate battery charging control is first charged at a constant current, and then when the battery voltage rises to 4.2V, the voltage will no longer rise, the charger detects the current, if the current is less than a certain value, the end of charging. Lithium batteries are sensitive to overcharging, so the protection circuit is complex. For a single nominal 3.6V battery the maximum charge voltage is rated at 4.2V, with an allowable error limit of no more than 1%.
Lead-acid battery, the ideal charging current is pulse type, pulse charging to the mains 50-60HZ power supply we use direct rectification without filtering the best pulsating DC charging, due to the lead battery self-discharge rate is relatively large, the use of industrial frequency charging, generally with constant voltage charging method.
As the lead-acid battery charger is generally set to two-stage or three-stage charging mode, lithium iron phosphate battery and lead-acid battery voltage level is not matched. If the voltage is consistent lithium batteries can be charged with lead batteries, lead-acid batteries can not be charged with lithium, because lithium safety requirements are higher.
Battery charger, the high-frequency switching power supply technology and embedded microcomputer control technology organically combined, using intelligent dynamic adjustment technology to achieve optimal charging characteristics curve, effectively extending the service life of the battery. It adopts four stages charging mode of constant current/W stage/constant voltage/small constant current, featuring high charging efficiency, high reliability, easy operation, light weight and small volume.
The intelligent battery charger can automatically adopt constant current fast charging, trickle floating charging and automatic stop charging when full according to the different conditions of battery voltage, while the diesel intelligent battery charger has automatic over-current and short-circuit protection. Compared with the float charger commonly used in the industry, the battery charger has the advantages of avoiding battery damage and prolonging service life. It is widely used in railroad, civil aviation, communication and electric power.
Lithium battery charger is specifically used to charge lithium-ion batteries. Lithium iron phosphate batteries have high requirements for the charger and require protection circuitry, so lithium battery chargers usually have a high degree of control precision and are able to charge lithium-ion batteries with constant current and constant voltage.
What is the difference between lithium iron phosphate and lead-acid battery charging method?
Charging method is the same, the voltage and charging rate is not the same, are first constant current, then constant voltage charging.
General lead-acid battery charging charger, are using a three-stage charging mode, in the case of 100% used up electricity, charging time will be in the 8-10 hours, do not exceed 12 hours, which will have an impact on the life of the battery, it is best not to use every time you use up the electricity, it is recommended that the power in about 70% to charge the lead-acid battery, the charging time is generally in about 6-8 hours.
Lead-acid batteries are generally used to 12V, rarely use a single 2V, charging, generally according to 0.1C charging to a single 2.35V or so to turn constant voltage charging, constant voltage charging, lead-acid industry called float charging. Only lead-acid in order to reduce the pressure difference, some will have a step current to constant current charging, the way and power battery pack charging is similar.
Lithium iron phosphate battery monomer 3.2V, the specific composition of the battery pack is how much, it is not clear, a variety of voltages are available, as large as the power car 560V, small to monomer with, charging, generally by 0.5-1C to constant-current charging, charging to monomer 3.6V to constant-voltage charging, wait until the current drops to 0.05C when it stops charging.
Some battery chargers themselves are protected, when the detected voltage of lithium iron phosphate batteries reached 4.2 volts, it stops charging. In the lithium iron phosphate battery and the charger in series with a slightly larger power silicon diode so charging, when the lithium iron phosphate battery voltage reached 3.6 volts, plus the diode voltage drop is exactly 4.2 volts, the same can be detected by the charger to stop charging.
Lithium iron phosphate battery and lead-acid battery advantages and disadvantages of comparison
① cycle life, lithium iron phosphate batteries 1200 to 2000 times, lead-acid batteries 500 to 900 times.
② specific energy, lithium-ion batteries 150Wh/kg, lead-acid batteries 40Wh/kg.
③Volume, the volume of lithium battery is 2/3 of the volume of lead-acid battery.
④ weight, lithium battery weight is light, only 1/3 to 1/4 of the lead-acid battery.
⑤ Price, lithium iron phosphate battery is higher, 24 V/10Ah price: 750-1200 yuan, lead-acid battery is lower, 24 V/12Ah price: 200-300 yuan.
⑥Charging and maintenance, lithium-ion batteries, high maintenance costs complex, lead-acid batteries low maintenance costs simple provided by the open circuit.
Lithium iron phosphate batteries are not like lead-acid batteries, there is a universal battery charger. Generally speaking, lithium batteries are shipped with a special charger. In order to protect lithium batteries, special chargers need to be used.
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