Power storage device control system, power storage system, and electrical appliance

摘要

Deterioration of a power storage device is reduced. Switches that control the connections of a plurality of power storage devices separately are provided. The switches are controlled with a plurality of control signals, so as to switch between charge and discharge of each of the power storage devices or between serial connection and parallel connection of the plurality of power storage devices. Further, a semiconductor circuit having a function of carrying out arithmetic is provided for the power storage devices, so that a control system of the power storage devices or a power storage system is constructed.

主权项

1. A power storage system comprising:
a first power storage element; a second power storage element; a third power storage element; a fourth power storage element; a first connection terminal; a second connection terminal; a third connection terminal; a fourth connection terminal; a first switch comprising:
a first terminal electrically connected to the first connection terminal;a second terminal electrically connected to a first terminal of the first power storage element; anda third terminal electrically connected to the third connection terminal; a second switch comprising:
a first terminal electrically connected to the second connection terminal;a second terminal electrically connected to a second terminal of the first power storage element; anda third terminal electrically connected to a first node; a third switch comprising:
a first terminal electrically connected to the first connection terminal;a second terminal electrically connected to a first terminal of the second power storage element; anda third terminal electrically connected to the third connection terminal; a fourth switch comprising:
a first terminal electrically connected to the second connection terminal;a second terminal electrically connected to a second terminal of the second power storage element; anda third terminal electrically connected to the first node; a fifth switch comprising:
a first terminal electrically connected to the first connection terminal;a second terminal electrically connected to a first terminal of the third power storage element; anda third terminal electrically connected to a second node; a sixth switch comprising:
a first terminal electrically connected to the second connection terminal;a second terminal electrically connected to a second terminal of the third power storage element; anda third terminal electrically connected to the fourth connection terminal; a seventh switch comprising:
a first terminal electrically connected to the first connection terminal;a second terminal electrically connected to a first terminal of the fourth power storage element; anda third terminal electrically connected to the second node; an eighth switch comprising:
a first terminal electrically connected to the second connection terminal;a second terminal electrically connected to a second terminal of the fourth power storage element; anda third terminal electrically connected to the fourth connection terminal; a ninth switch comprising:
a first terminal electrically connected to the first node; anda second terminal electrically connected to the second node; and a tenth switch comprising:
a first terminal electrically connected to the second node; anda second terminal electrically connected to the third connection terminal.