Texas Instruments Fuel Gauge with Impedance Track™ for Lead Acid Batteries Evaluation Module BQ34Z110EVM BQ34Z110EVM Datenbogen
Produktcode
BQ34Z110EVM
EVM Hardware and Software Setup
5.6
Calibration Screen
5.6.1
How to Calibrate
Calibrate the bq34z110 using appropriate floating power supplies before the cells are attached. Complete
the following before the bq34z110 is calibrated:
the following before the bq34z110 is calibrated:
•
Connect and measure a 1- to 2-A stable current source from BAT(–) to PACK(–). The positive lead
from the current source is connected to PACK(-) simulating a discharge current.
from the current source is connected to PACK(-) simulating a discharge current.
•
Connect and measure a stable voltage source from BAT(+) to BAT(–).
•
Measure the temperature near the thermistor.
Whether all of the preceding steps are required depends on the type of calibration being performed.
5.6.2
Calibrating the bq34z110
Calibrate the bq34z110 using the following sequential steps:
1. Select the types of calibration to be performed.
2. Enter the measured values for the types of calibration selected (except for offset calibrations).
3. If Temperature Calibration is selected, select the sensor that is to be calibrated.
4. Click the appropriate button to initiate calibration.
Figure 11. Calibration Screen
16
bq34z110EVM Wide-Range Impedance Track™ Enabled Fuel Gauge
SLUUA15 – October 2012
Solution for Lead-Acid Batteries
Copyright © 2012, Texas Instruments Incorporated