Patent ID: 11894702
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC H

Claim 0:
1. An energy transfer circuit comprising:
an inductor;
a cell selection circuit provided between the inductor and n cells connected in series, where n is an integer of two or more, the cell selection circuit being configured to electrically connect both ends of any cell of the n cells to both ends of the inductor;
a clamp switch for forming a closed loop including the inductor in a state where the cell selection circuit does not select any cell; and
a controller that controls the cell selection circuit and the clamp switch,
wherein the controller is configured to:
cause the cell selection circuit to electrically connect both ends of a cell to be discharged among the n cells to both ends of the inductor for a predetermined time,
cause the cell selection circuit to electrically disconnect the n cells from the inductor, and turn on the clamp switch, and
turn off the clamp switch, and cause the cell selection circuit to electrically connect both ends of a cell to be charged among the n cells to both ends of the inductor for a predetermined time, and

the cell selection circuit includes:
a first wiring connected to one end of the inductor;
a second wiring connected to another end of the inductor;
(n+1) first wiring side switches each connected between the first wiring and a corresponding one of nodes of the n cells connected in series; and
(n+1) second wiring side switches connected each between the second wiring and a corresponding one of nodes of the n cells connected in series.