7.1
Connecting bq20z95/bq29412 Circuit Module to Battery Pack
7.2
PC Interface Connection
Hardware Connection
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Figure 7
shows how to connect the bq20z95/bq29412 circuit module to the cells and system load/charger.
The cells should be connected in the following order:
1. 4-Cell Pack: 1N (BAT–), 1P, 2P, 3P, and 4P (see
Section 2.1
for definitions).
2. 3-Cell Pack: 1N (BAT–), 1P, 2P, and then connect 4P and 3P together.
3. 2-Cell Pack: 1N (BAT–), 1P, and then connect 4P, 3P, and 2P together
To start charge or discharge test, connect PRES pin to PACK- pin to set SYS PRES state. To test sleep
mode, disconnect the PRES pin.
Figure 7. bq20z95 Circuit Module Connection to Cells and System Load/Charger
The following steps configure the hardware for interface to the PC:
1. Connect the bq20z95-based smart battery to the EV2300 using wire leads as shown in
Table 5
.
Table 5. Circuit Module to EV2300 Connections
bq20z95-Based Battery
EV2300
SMBD
SMBD
SMBC
SMBC
VSS
GND
2. Connect the PC USB cable to the EV2300 and the PC USB port.
The bq20z95EVM-001 is now set up for operation.
10
bq20z95EVM-001 SBS 1.1 Impedance Track™ Technology
SLUU275 – October 2006
Enabled Battery Management Solution Evaluation Module
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