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badgerloop-software / solar_car_hardware

Repository for solar car electrical hardware made in Altium Designer.
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Battery Capacity Tester Rev A Changes #29

Open jacob3457 opened 2 years ago

verichjack commented 2 years ago

Relay Pinout: pins 3 and 4 need to be switched and their traces rerouted.

Relay
jacob3457 commented 2 years ago

R10 Change to Capacitor (Optional) May use a capacitor in circuit in place of R10 to reduce noise

verichjack commented 2 years ago

Changing U1 and U2 from Texas Instruments TLOCDR OPAMP to Texas Instruments TLC272C OPAMP

verichjack commented 2 years ago

Switched the inverting and noninverting inputs pins 5 and 6.

Screenshot 2022-04-03 122744 Screenshot 2022-04-03 122655
verichjack commented 2 years ago

Shunt Voltage and Current Set Scaled switched corresponding to pins 2 and 3.

verichjack commented 2 years ago

Pad 2 for potentiometer footprint moved to ground

Screenshot 2022-04-03 125242
jacob3457 commented 2 years ago

UVLO Input change Need to connect the relay common net to the input to the UVLO op amp (now switched to the inverting input, see other comment), instead of BATT_POS_PROT. The op-amp needs to read the battery voltage before the relay, not after.

Capture
jacob3457 commented 2 years ago

Possible Change-Move TH1 Could move TH1 down on the board to be closer to the hole in the battery holder that it will go through.

jacob3457 commented 2 years ago

Possible Change-Move Charging Chip Could move charging chip to allow for bigger heat sink.