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The use and maintenance of lead-acid batteries


Described. 2.3.1 There are three lead-acid battery charging voltage Charging voltage parameters: (1) 68 maximum charge voltage 2008 is the largest geophysical equipment, battery charging voltage is in the process of charging voltage to achieve maximum value. Generally the temperature at 25 ℃ under the provisions of each single cell is full when the voltage between 2.3 ~ 2.4V, so a complete battery (including six single battery) voltage of the 13.8 ~ 14.4V , the error is ± 0.03V. When the temperature rises, the maximum charging voltage is reduced. Battery not charging as much as possible off, otherwise it will affect battery life. (2) float voltage (less than the maximum charging voltage) in order to make the battery more saturated, when the lead-acid battery to an end, we should instead continue to charge the battery float voltage. Float work under the battery charge and discharge cycles reduced self-discharge and depth of discharge capacity can be compensated in time, higher utilization of active material, so the battery life will be longer. Float float voltage when batteries must be kept constant at the same time, the voltage should be chosen so that the battery due to overcharge and damage caused at the minimum. Battery in the float process, due to the float voltage and temperature are related, so the float voltage should be selected taking into account the ambient temperature changes, which extend VRLA battery life is very important. Lead-acid batteries according to manufacturer's data: single-cell at 25 ℃ under the float voltage of 2.25 ~ 2.28V,mbt chaussures paris, this value is ± 0.005V with temperature fluctuations. Although the manufacturers battery float voltage,christian louboutin boutique, float current and temperature characteristics are different, but one thing is certain, that the float current increases with the float voltage increases with temperature increase. (3) rated voltage no matter what kind of battery has a rated voltage, that is, over time discharge the battery open circuit voltage (no load). As the lead-acid battery discharge curve is not linear change, so we can not simply believe that the rated voltage is the battery capacity in the open circuit voltage of about 5O. If the battery is fully charged and placed more than 24h, we believe that the rated voltage of 12V. In each cell are marked on the packaging of its rated voltage,abercrombie paris, listed in Table 1. Table 1 Different types of body core voltage rating of the battery type Ni-MH battery Ni-Cd battery lead battery lithium-ion battery Rated voltage (V) 1.21.22. o (2.1) 3.6 (3.7) a lead-acid batteries are generally composed of several single-cell battery pack to. As can be seen from Table 1, a single battery voltage is 2.0V, when the combination of six single-cell lead-acid battery on the 12V. 2.32 for normal charging current (charging time about 14h or so), the charging current is generally set for the battery capacity of 1/1o. If a battery capacity of electric capacity 50Ah, so it's charge current is set at 5A. Typically, the battery charge current not less than the minimum battery capacity of 1 / 20, the charging current can not exceed the maximum capacity of 1 / 5. Figure 1 shows a typical battery charging curve, can be seen from Figure 1: (1) people power in the battery charge before you reach 80, to maintain constant current operation; 8O charge after man power up during the charging process to switch from constant current for the constant pressure process, the battery terminal voltage is limited to 14.3V; (2) when the battery terminal voltage rises to near stable point 14.3V, charging people who have been into the latter part of the electrolyte concentration near the surface of the electrode, so rapid decrease in battery current; (3) when the charge to post, the battery current has been significantly reduced, so the concentration polarization effect be reduced, and electrochemical polarization increases, the battery current continues to decay,ralph lauren pas cher, but the current decay speed becomes slower; (4) charging into the end of the main charge for the battery's current circulation of oxygen, very little current and the recovery of active substances used in batteries, so battery current is almost unchanged. If5A12V / / /. 13.8, eight 80% 95% loo% charge a percentage of total capacity of people power battery charging curve in Figure 1 3 Conclusion and discussion by the above analysis shows that the length of battery life in addition to various manufacturers and manufacturing processes related, but more depends on the user routine maintenance and reasonable use of the proper maintenance and use of it is to determine the key factors in battery life, but also outside the normal operation of the construction and efficient and reliable protection. References 1Sercel company. 408ULER] Referencetrainingguide. 20052 Jing-Hong Li. Advanced battery materials. Chemical Industry Press, 2004 Date Received :2007 -04-03
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