Patent ID: 8487581
Filing Date: 2013-07-16
Classification: G01R,H02J

Abstract:
1. A battery pack burn-in test system comprising: first and second interconnection circuits for electrically interconnecting a first and a second battery pack respectively to the system; a data communication bus for coupling to respective battery management integrated circuits (ICs) of the first and second battery packs; and a system management unit coupled to the data communication bus; wherein the system management unit controls a charging of the first battery pack during a burn-in test from a discharging of the second battery pack; and further comprising a first adjustable power supply electrically connected in series with the second electrical interconnection circuit and coupled to the data communication bus for maintaining a selected voltage difference between a series voltage of the second battery pack and the first adjustable power supply on the one hand, and a voltage of the first battery pack on the other hand such as to maintain a constant charging current for the first battery pack in a constant current charging state under the control of the system management unit; and wherein the system management unit is further configured for maintaining the series voltage of the second battery pack and the first adjustable power supply at a constant value and allows the charging current to gradually decrease in a constant voltage charging state following the constant current charging state.