LITHIUM ION BATTERY PACK MANAGEMENT DEVICE AND LITHIUM ION BATTERY PACK SYSTEM

摘要

PPROBLEM TO BE SOLVED: To secure higher safety when a plurality of lithium ion secondary batteries are used as a battery pack. PSOLUTION: A lithium ion battery pack management device includes: cell controllers 4 that monitors cell states such as voltages and temperatures of the lithium ion cells 2 and adjusts charge voltages of the lithium ion cells 2 so as to be within prescribed values; single battery packs 5 which are installed at every single battery pack 3, analyze the cell states received from the cell-controllers 4 in the single battery packs 3, and monitor and analyze the states of the single battery packs such as charging currents and discharging current of the single battery packs 3; charging switches 6 which are installed at every single battery pack 3 and connect/disconnect a charge power supply and the single battery packs 3; and discharging switches 7 which are installed at every single battery pack 3 and connect/disconnect a load facility and the single battery packs 3. The switches 6, 7 are controlled based on analysis results of the corresponding single battery pack management units 5. PCOPYRIGHT: (C)2011,JPO&INPIT