Patent ID: 9627718
Date: 2017-04-18
CPC Classifications: H01M,H02J,Y02E

Claim:
1. A parallel-connected electricity storage system in which a plurality of chargeable and dischargeable electricity storage elements are connected in series as an electricity storage element row and a plurality of the electricity storage element rows are connected in parallel, the parallel-connected electricity storage system comprising: an electricity-storage-element-voltage measuring device that measures an electricity storage element voltage of each of the electricity storage elements; an electricity-storage-element-state estimating device that estimates an electricity storage element state of each of the electricity storage elements; an electricity storage-element-current measuring device that measures an electricity storage element current of each of the electricity storage element rows; a parallel-connected switch that performs connection and disconnection to and from the parallel-connected electricity storage system for each of the electricity storage element rows; and a parallel-connected-switch control means for turning on the parallel-connected switch on the basis of the electricity storage element voltage, the electricity storage element state, and the electricity storage element current.