Cell-Balancing Activity Profile | Cypress CY8C29x66, AN2309 guide

AN2309

Figure 14. Cell-Balancing Activity Profile

Cell Voltages With

Charge Interrupt

Voltage

Imbalance

Value

November 25, 2007

Document No. 001-17394 Rev. *B

- 19 -

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Image 19

Contents

Introduction Application Note Abstract Cell Ccell 1 Vcell Cell-Balancing FoundationQcell 1 Qcell Ccell 1 Vcell 1 Ccell 2 Vcell Rload IbalN VcellNIchargeN Icharge IbalN RdischargeN Two-Cell Battery Charger Hardware Two-Cell Battery Charger with Cell-Balancing Support Device Schematic BAT2 + C9 PSoC Device Internals R15 Battery Measurement N4.2 V old Gina V Vbat Max NmaxVref Nnew nold N4.2 V new Two-Cell Battery Charger Algorithm Two-Cell Battery Charger Firmware Two-Cell Battery Charger State Diagram Two-Cell Battery Charger Firmware Flowchart Part Cell-Balancing Algorithm Cell-Balancing Algorithm Parameter Unit Description Charging Parameters Two-Cell Battery Charger Parameters Conclusion Cell-Balancing Parameters Charge/Discharge and Cell-Balancing Profile Examples Appendix Cell-Balancing Activity Profile Cell-Balancing Parameter Profile Screen About the Author ECN Document History