Battery discharge
1 and discharge termination voltage battery unfavorable discharge below: the reservation, otherwise will result in the termination voltage, and have had repeatedly discharge will lead to discharge capacity to restore, for the best work efficiency and the longest life-span, discharge in 0.05 – between 3C,
2 and discharge capacity:
1) discharge capacity and discharge current relationship: 1 for FM, GFM series batteries, JMF in different discharge rate under the condition of capacity, you can see from the graph, discharge rate, the capacity of the battery can release the smaller.
2) temperature effect: the battery capacity, the influence of the temperature is too low temperature (15 degrees below – 5 degrees f) can reduce effectively capacity, high temperature (more than 50 ° c / 122 degrees f) will cause thermal runaway and damage to cells (figure 2).
Third, FM, GFM series products, JMF charging method
1, float filling (limit voltage, current) use: float to control charging pressure 225 V ~ at 2.30 V/monomer, maximum current not more than 0.25 C10, battery charging flow to float 2mA less than 25 degrees Celsius (AH /) (see chart 3).
2 and recycling, namely stop charging (that) : after charging electric charge voltage 2.4 V/monomer, maximum charge current not more than 0.25 C10 (see figure 4).
3, temperature compensation: chemical reaction with the temperature increasing speed, lower temperature and slow. In the 5-35 degrees Celsius battery within the scope of work, the need for recharging voltage compensation, when the temperature is below 5 degrees or above 35 ° c, in order to prevent the battery overcharge or owe proposal for recharging voltage filling appropriate adjustments, adjust the standards for discharge 3mv – cell ° c / /, recycling for – 4mv/c/cell (temperature to 25 degrees Celsius), please refer to FIG. 5.
4 and charging time: to spare, when batteries, battery charged to the time needed for not less than 24 hours, generally, In terms of circulation, if you know the battery power and put the initial charging electric current, can according to the following formula for calculating the environment of 25 degrees Celsius to recharge time.
A. when discharge current is greater than 0.25 C
Cdis
Tch = I + 3 ~ 5
B. when discharge current than 0.25 C
Cdis
Tch = I + 6 ~ 10
Note: Tch = batteries electricity needed time (hours),
Cdis = battery last discharge power (Ann)
I = maximum initial charge current (amps)
Four, the life of the battery
1, the influence factors of the battery life,
Repeat the shallow depth discharge (especially after charging the deep discharge)
Outside temperature is too high
Charging (especially Juan streaming charge)
Excessive charging electric current
When the battery charging good long-term shelved (especially in the high temperature environment),
2 and circulation service life:
When the battery charging and discharging recycling for a cycle, battery life cycle times) and battery (cycle, the depth of the discharge battery charging method and the surrounding environment is closely related to the (see FIG. 6).
3, float filling longevity:
Battery charging mainly by the float life, discharging voltage, the influence of the temperature of the surrounding life also affect product, figure 7 for FM, GFM series, the figure 8 JMF series model for battery life and environment of the floating filling the relationship between temperature curve.
Five, the capacity
1, self-discharge:
1) if the battery charge after long-term storage capacity, and will gradually decrease, such phenomena as discharge, and this phenomenon is called self-discharge is inevitable. Even if battery unused, also for battery chemistry and electrochemical reactions since internal caused by itself, now will discharge the lead-acid battery burke of discharge points as follows:
Chemical factors: whether Yang (PbO2) or (Pb), all of the activation by decomposition reaction (or gradually and electrolyte), and transformed into a stable lead sulfate, this process is also to discharge.
The electrochemical factors: due to the existence of pure substance is formed within the battery will occur with local circuit or poles caused REDOX reaction to discharge.
Burke battery electrolyte with impurity content is extremely low, so is the very small, self-discharge battery super keep characteristics. Its properities characteristics as shown in figure 9.
2) battery self-discharge rate and storage temperature also has the close relation, please refer to FIG. 10.
2 and open through the battery voltage can judge the residual capacity of the battery, the figure 11 for residual capacity and open the relationship between voltage graph:
The storage battery
Low temperature storage battery should be clean, dry, the environment, heat, avoid direct sunlight. Adequate storage battery power. And next month at 3 ~ 6 months on a battery.
Battery charging and discharging immediately after the battery in the discharge shall be suspended for,
Don’t need to use the battery should be suspended for a period of time after repeated charging, until capacity restored to the original level,
Only when the capacity to or below the rating capacity of 40 % (open-circuit voltage is below 25 degrees Celsius (V/V) 12.63 6.3, to make the capacity balance charging resumed,
Low temperature storage battery can more long time, such as the battery is stored in 15 ° c, the light is wet and, in irradiation essential supplement before, can keep more than 12 months.