Panasonic Intellectual Property Management Co., Ltd.

Jun Yamasaki

Toshiya Iwasaki

Masaaki Kuranuki

Takashi Iida

Hirotsugu Murashima

Masaki Kato

Changhui Yang

Atsushi Suyama

Naohisa Morimoto

Yohei Ishii

Atsushi Shimizu

Etsushi Aga

Koichi Sawada

Masaharu Amaike

Yosuke Tanida

Controller determines an output limit value that defines an upper limit of a current or power recommended for suppressing cell deterioration based on a voltage, a current, and a temperature of each cell, and notifies host controller in electric vehicle of the determined output limit value. When electric vehicle climbs a hill, controller calculates a current value or power value to be discharged from power storage unit, the current value or power value being required for electric vehicle to climb the hill at a speed not less than a set minimum speed, while suppressing an amount of deterioration of cells within an allowable range, and when the calculated current value or power value is larger than the output limit value, replaces the output limit value with the calculated current value or power value.

Power source system and management device

A management device manages a plurality of power storage devices interconnected in parallel. In the management device, a halt controller halts an operation of at least one of the plurality of power storage devices during a period in which charged/discharged power between the plurality of power storage devices and a load is less than a set value. During the period in which the charged/discharged power is less than the set value, for example, the halt controller, by turns, halts an operation of one of the plurality of power storage devices at a set time interval.

Management device and power storage system

In a power storage system, a three-phase AC wire is connected to a three-phase AC power system. Power storage blocks, each of which includes a power storage module and a power conditioner, are connected in parallel to the three-phase AC wire. A system controller individually controls power storage blocks. The power storage modules each includes: a power storage unit; and a management unit that manages the power storage unit. The power conditioner includes a power converter and a controller. The power converter converts DC power discharged into single-phase AC power and outputs the converted AC power to two lines of the three-phase AC wire, or converts single-phase AC power received from the two lines of the three-phase AC wire into DC power and charges the power storage unit. The controller is connected to the system controller via a communication line and the management unit via a communication line.

Power storage system

[Problem] To provide a charging system that levels the amount of grid power that is used, and that is capable of reducing power rates, even if charging has been frequently conducted without limiting the time zones in which charging is conducted. [Solution] A charging system is provided with: a storage unit that is charged by consuming grid power supplied by a power company, and that supplies the stored power through discharge; and a charging unit that charges batteries by consuming power supplied by grid power and the storage unit. Power companies set a power rate that is higher the greater the maximum value of the amount of power supplied for each unit of time is. Furthermore, at least a single charge carried out by the charging unit is carried out over two units of time, and the storage unit supplies power to the charging unit in at least one unit of time other than said two units of time.

Charging system

[Objective] To provide a power supplying system wherein the timing at which a storage unit conducts capacity learning is made to be more suitable. [Solution] A power supplying system supplies power to loads provided within a facility, and is provided with: a power storage unit that stores power by being charged, and supplies power by being discharged; and a capacity measurement unit that measures the remaining capacity of the power storage unit by executing a complete charging and a complete discharging of the power storage unit, in sequence. The capacity measurement unit obtains the operation schedule of the facility, and determines the timing at which the complete charging and the complete discharging of the power storage unit are to be conducted, on the basis of the operation schedule.

Power supplying system for supplying power to a load disposed in a facility

Growing community of inventors

Hyogo, Japan

Jun Yamasaki