Solar Group Communication Base LifePo4 Batteries Maintenance
Author: Source: Datetime: 2016-10-18 17:28:38
One is to Prevent Overcharging.
Heat accumulation inside the lifePo4 battery life and performance and is closely related to the generation of the battery, and the LFP battery inside the main heat source to the power loss in the internal electrochemical reaction, you can simply look at the charging voltage and charging current of the product. Oxygen recombination reaction, float current increases more heat is generated in the constant voltage charging, the current float will increase with increasing temperature, which in turn further increases the temperature. Thermal runaway phenomenon peculiar structure is the way of VRLA batteries caused. Thermal runaway often bring serious harm such as cell loss, housing 'drum belly' and other serious cases causing the battery scrap. Prevent overcharging in strict accordance with the manufacturer's instructions is to provide a charging voltage value. Now a combination of power can be set up and implement intelligent management, it should be noted that the first is to set up correctly, usually followed by unauthorized persons should not be arbitrarily changed.
The Second is to Prevent Charging Less.
And overcharge the contrary, insufficient charge is mainly due to low or charging voltage is set too low. Or rack solar powered portable generator system problem.
The Third is to Prevent Over-discharge.
Design of the depth of discharge cycles life are closely related. For example, the number of cycles is 10,000 at 5% depth of discharge, , when the depth of discharge is 50%, the number of cycles is only 800 times. Excessive discharge will cause serious battery no longer be activated to the best state, or even scrapped. Different discharge rates the time of discharge termination voltage is also different, the effective capacity of the emitted are different too, and is affected by the ambient temperature.More manufacturers to consider when monitoring unit for any reason (depending on the power supply may be) can not detect the battery termination voltage or other equipment can not issue commands to force parts of the circuit. Therefore, maintenance personnel should also be concerned about the reliability of the hardware circuit in the inspection, the inspection and maintenance to be.
Fourth, Control the Ambient Temperature.
When the lifePo4 battery temperature rises, increasing the electrolyte activity, battery resistance decreases, the float current increases lead to increased corrosion of the conductive element, reducing life; on the contrary, weakening of activity in the electrolyte, the lifePo4 battery internal resistance increases, the battery load discharge ability is weakened. Therefore, the lifepo4 48v battery temperature and ambient temperature monitoring to controlmaintain is very necessary. It must be temperature compensated charging voltage to prevent overcharging at high temperatures and low temperature charge. The vast majority use VRLA battery place, looking at environmental temperature controlled at about 25 degrees, accelerated life tests showed elevated ambient temperature of 10 degrees, do not adjust the charging voltage, the battery life will be shortened by half.
Fifth, to Promptly Replace the Faulty Battery.
Due to process differences of each monomer may gradually by degrees under long-term float 'behind', so there will be periodic monitoring unit for charging the Lifepo4 batteries pack all management functions, in order to activate the backward monomer portable solar power generator, so as not to then backward. But often fall behind and may eventually become faulty battery. We can use a variety of methods to determine whether it has been terminally ill, such as its capacity tested individually, or online test its internal resistance and the like. The key is to promptly replace the faulty battery, so that the entire group as well as the availability of the Lifepo4 batteries life is very important.
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