gel battery load measure
hi dear devonsc
thank you very much for your reply.
my company, megasol inc., switzerland, would you pay a real price if you can help me effectively.
my idea is to use a PIC with two logic-level-mosfets, the 1st fet (fet1) to implement a step down = buck converter and the 2nd fet (fet2) to control the load line. the pic also must drive a display to show the charge/discharge current and/or the charge of the battery.
so the PIC sw must do:
- PWM buck regulating, can be very slow
- Ucells < Ubattery -> fet1 is closed* (prevent solar reverse curent at night)
- charge/discharge current > 40A -> fet1 and fet2 closed*
- Ubattery > 14.6V -> fet1 closed*
- Ubattery < 11.1 V -> fet2 closed*
- measure charge/discharge current, display it
- integrate charge/discharge current and display the battery charge in Ah
*always display a warning/error message
the display should be self-explaining, easy to understand also for non-profis
i would like to program in basic, pascal etc., C or assembler would be 2nd choice
yours sincerely,
walter nussbaum, megasol inc., dipl. electronics engineer eth, zürich
mail:
wnussbaum@gmx.ch
phone: +41 268 90 32 mobile: +41 79 297 62 78