Texas Instruments bq35100 User Manual

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29
SLUUBH1C–August 2016–Revised March 2018
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Battery Condition Warnings
STATUS CONDITION ACTION
Normal Temperature() < OT Dsg Threshold BatteryAlert()[TEMPHIGH] = 0
Trip
Temperature() ≥ OT Dsg Threshold for OT Dsg Time
duration
BatteryAlert()[TEMPHIGH] = 1
Recovery Temperature() < OT Dsg Recovery BatteryAlert()[TEMPHIGH] = 0
CLASS SUBCLASS NAME TYPE SIZE
MIN
VALUE
MAX
VALUE
DEFAULT
VALUE
UNIT
Configuration Discharge OT Dsg
Signed
Integer
2 –400 850 450 0.1°K
Configuration Discharge OT Dsg Time Integer 2 0 255 4 s
Configuration Discharge OT Dsg Recovery Integer 2 0 255 100 0.1°K
7.4 Battery Low SOC Warning
The bq35100 device can indicate and optionally trigger the ALERT pin when the primary battery state-of-
health (SOH) falls below a programmable threshold.
STATUS CONDITION ACTION
Normal StateOfHealth() > SOH Low BatteryStatus()[SOHLOW] = 0
Trip StateOfHealth() ≤ SOH Low BatteryStatus()[SOHLOW] = 1
CLASS SUBCLASS NAME TYPE SIZE
MIN
VALUE
MAX
VALUE
DEFAULT
VALUE
UNIT
Configuration Discharge SOH Low
Signed
Integer
1 0 100 10 %
Configuration Discharge SOH Set Time
Signed
Integer
1 0 100 10 %
Configuration Discharge
SOH Clear
Threshold
Signed
Integer
1 0 100 10 %
7.5 Battery EOS OCV BAD Warning
The device assumes that when GE is asserted, the cell is at rest and uses the initialization voltage reading
to determine the Open Circuit Voltage (OCV). If the cell was not fully relaxed at that point, then the voltage
after the pulse could rise above the OCV. This causes an incorrect impedance to be calculated.
If the device measures a voltage value above the initial OCV, then it increments an internal counter. When
this counter increments up to EOS Relax V Hi Max Counts, then [EOS_OCV_BAD] is set in
CONTROL_STATUS().
If [EOS_OCV_BAD] becomes set, then the battery requires a longer time to rest and the device should be
powered down (GE driven low). As a guideline, from the last major discharge, a rest of 5 hours should
allow full relaxation.
CLASS SUBCLASS NAME TYPE SIZE
MIN
VALUE
MAX
VALUE
DEFAULT
VALUE
UNIT
EOS Data Values
EOS Relax V
Hi Max Counts
Integer 1 1 255 3 counts

Texas Instruments bq35100 Specifications

General

Brand	Texas Instruments
Model	bq35100
Category	Control Unit
Language	English