Patent ID: 8502502

Claim:
An electricity storing device comprising: a high-voltage terminal; a low-voltage terminal; a plurality of rechargeable battery modules, each for storing electrical energy or outputting stored electrical energy; a plurality of first switches, each coupled between one of the plurality of rechargeable battery modules and the high-voltage terminal, for turning on or turning off electrical connection between the rechargeable battery module and the high-voltage terminal according to a control command; a plurality of second switches, each coupled between one of the plurality of rechargeable battery modules and the low-voltage terminal, for turning on or turning off electrical connection between the rechargeable battery module and the low-voltage terminal according to the control command; a plurality of third switches, each coupled between two of the plurality of rechargeable battery modules, for turning on or turning off electrical connection between the two rechargeable battery modules according to the control command; and a control module, for outputting the control command to control the plurality of first switches, the plurality of second switches and the plurality of third switches.