Electricity storage system

• Main Authors: KAIYA HIROYUKI, NISHI YUJI, KIMURA KENJI, TAKAHASHI KENJI
• Format: Patent
• Language: Chinese; English
• Published: 17.09.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To identify, in an electricity storage block having a plurality of electricity storage elements connected in parallel, the number of activated current breakers (the number of disconnections) among the current breakers included in the respective electricity storage elements. An electricity storage system has a plurality of electricity storage blocks and a controller for identifying the state of each of the electricity storage blocks. The electricity storage blocks are connected in series and each have a plurality of electricity storage elements connected in parallel. Each of the electricity storage elements has a current breaker for disconnecting the current path inside the each of the electricity storage elements. The controller obtains at least one of the parameters of the internal resistance and full charge capacity of each of the electricity storage blocks and, using the change rate between the obtained parameter and a reference value, identifies the number of current breakers in a disconnection state (the