Invention Grant
- Patent Title: Battery cell charge balancing
-
Application No.: US13661645Application Date: 2012-10-26
-
Publication No.: US09774193B2Publication Date: 2017-09-26
- Inventor: Andrew Gaylo , Dennis L. Potts
- Applicant: Eetrex, Inc.
- Applicant Address: US CO Boulder
- Assignee: Eetrex, Inc.
- Current Assignee: Eetrex, Inc.
- Current Assignee Address: US CO Boulder
- Agency: Polsinelli PC
- Main IPC: H02J7/00
- IPC: H02J7/00 ; H01M10/42

Abstract:
A method and/or system for charge balancing across one or more modules or cells of a large battery system is described. In one embodiment to balance the modules, the battery management system may monitor the voltage output of the one or more modules of the battery system during recharging of the modules and compare the measured voltages to a set cutoff voltage. When one or more of the modules meets or exceeds the cutoff voltage, the battery system may activate an energy dissipating device associated with the one or more modules that meets or exceeds the cutoff voltage to reduce the voltage output from those modules below the cutoff voltage before the recharging signal is reapplied to the modules. Through multiple iterations of monitoring, charging and reducing the energy from the modules above the target, the SOC of each modules becomes balanced near or at the cutoff voltage.
Public/Granted literature
- US20130106360A1 BATTERY CELL CHARGE BALANCING Public/Granted day:2013-05-02
Information query