Hello,
I am a newbie designing a smart battery charger with BQ24550 here are the details mentioned.
I have 4 Lead Acid batteries (Panasonic LC-R064R5P) 6V 4.5Ah connected in series to form a battery bank of 24 volts 450 mA.
Battery Specifications:
Charge method: Constant Voltage
Cycle Use: Initial Current = 1.80 A or smaller; Control Voltage= 7.25 to 7.45Volts per 6V cell
Trickle Use: initial current = 0.675A or smaller; Control Voltage = 6.8V to 6.9V per 6V cell
I need to charge this battery bank of 24V 4.5Ah using TI BQ24450 charge controller.
I have few questions:
a) Is it recommended to charge a bank of 4 SLA batteries connected in series with 30 - 32 Volts charging voltage with BQ24450.
b) Please verify the following passive components for BQ24450 circuit
Passive component values:
Rc 46.00KΩ
Ra + Rb 502.33KΩ
Rd 600.36KΩ
Rb 16.41KΩ
Ra 483.50KΩ
Ipre 40.06mA
Risns 0.37Ω
Rp 8888.89Ω
Pd 0.0290967W
c) How to connect various output of BQ24450 to a processor to make a smart charger?
Waiting for suggestions, Thanks.