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The relationship between battery impedance and capacity

In Electronic Infomation Category: T | on April 22,2011

Battery internal resistance and EP1S10F484C7 datasheet and capacity in which the relationship between the two meanings:

Battery internal resistance relationship with the rated capacity and EP1S10F484C7 price and internal resistance of the same type of battery state of charge SOC with the relationship. Ten years ago, people have tried to use VRLA battery internal resistance (or conductance) changes to the line detection and EP1S10F484C7 suppliers and prediction of battery capacity battery life, but unable to do so; recently with the electric car and electric bicycle industry, People battery large current discharge capacity of a higher and higher requirements, which requires minimizing the battery internal resistance. Therefore this paper will further explore and clarify some common battery internal resistance and capacity of the intrinsic relationship between.

1 VRLA battery

Present VRLA battery has gradually replaced the open-type lead-acid battery electrolyte flow is widely used in post and telecommunications power supplies, UPS, energy storage power systems. Power Type VRLA battery not only has been widely used in electric bikes, and the recent push into Youxiang light electric vehicles. These areas require the online detection of battery charge state.

(1) the internal resistance of the battery charge state of the relationship with

Battery charge state SOC refers to the capacity of the battery can be released with more than its rated capacity. The data on post and telecommunications power system and battery power is being used is very important.

1992 Nian David O Feder issued by MIDTrONic Celltronand Midtron conductivity tester to valve-regulated lead-acid battery (VRLA) testing and results. Figure 1 shows 336 1000Ah sealed lead acid batteries discharge with 263 A to 1. 80 V battery discharge time with the conductance (reciprocal of resistance) of the distribution. Can be seen that there is a linear relationship between them, the correlation coefficient R2 = 0.825.

Which was raised for the online use of VRLA batteries, can be measured conductance value of their remaining capacity to speculate. While ten years ago I learned from the objective reality has made this point repeatedly negative views, and after many of his peers recognized experts. But today there are still some people did not do tests without hesitation outdated view of the above quote, so repeat the above point of view about the crux.


Figure 1 sealed lead-acid battery conductance and discharge time

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