Battery cabinet current algorithm principle

How a battery current is measured?

The battery current is measured via the voltage across resistor R3. The IIC calculates the SoC of the battery by increasing the value of a counter during charging and decreasing it during discharging at a speed proportional to the value of the current.

How complex is a battery charging system?

The complexity (and cost) of the charging system is primarily dependent on the type of battery and the recharge time. This chapter will present charging methods, end-of-charge-detection techniques, and charger circuits for use with Nickel-Cadmium (Ni-Cd), Nickel Metal-Hydride (Ni-MH), and Lithium-Ion (Li-Ion) batteries.

How do Ni based rechargeable batteries work?

As is usually the case with Ni based rechargeable batteries, use is made of the specific shapes in the battery voltage and temperature curves at the end of charging to determine the full state of the battery. The calculation of the derivatives yields information on the shape of the measured voltage and temperature curves.

What is a battery control function?

The control functions act on the charging and discharging of the battery on the basis of these measured variables. Implementation of these monitor and control functions should ensure optimum use of the battery and should prevent the risk of any damage being inflicted on the battery.

How do I maximize initial design with fully populated battery container?

Fully maximize initial design with fully populated battery container at Yr0. Utilize DC/DC converter during augmentation to control DC Bus voltage. Fully maximize initial design with fully populated battery container at Yr0. Utilize DC/DC converter during augmentation to control DC Bus voltage.

How does the FET lm3420 regulate battery voltage?

Since the FET Q2 is fully turned on, the charging current must be limited by the DC source which powers the circuit. When the battery voltage reaches 12.6V, the LM3420 regulates the battery voltage by sourcing current, which adjusts the Q2 gate voltage as required to hold the battery volt-age at 12.6V.