The relationship between battery internal resistance and capacity
Internal resistance and capacity relationship
The relationship between battery internal resistance and capacity has two meanings:
The relationship between the internal resistance of the battery and the rated capacity, and the relationship between the internal resistance of the same type of battery and the state of charge SOC. More than a decade ago, people tried to use the valve-controlled sealed lead-acid battery internal resistance (or conductance) to detect the battery capacity and predict the battery life online, but failed to do so; people put forward the high-current discharge capacity of the power battery. Increasingly high requirements require low battery internal resistance. Therefore, this paper will further explore and clarify the internal relationship between the internal resistance and capacity of some common batteries.
Valve controlled seal
At present, valve-regulated sealed lead-acid batteries have gradually replaced open-ended flow electrolyte lead-acid batteries, which are widely used in postal and telecommunications power supplies, UPS, and energy storage power systems. Powered valve-regulated sealed lead-acid batteries have been widely used in electric bicycles. These areas require online detection of the state of charge of the battery.
The relationship between the internal resistance of the battery and the state of charge
T he state of charge SOC of a battery refers to the ratio of the capacity that the battery can discharge to its rated capacity. This data is important for postal and telecommunications power systems and power battery packs in use.