Sony Corporation

Murata Manufacturing Co., Ltd.

Joled Inc.

Nippon Steel Corporation

Atsushi Ozawa

Mitsuru Tada

Kazuo Nakamura

Shinichi Uesaka

Katsuhide Uchino

Shin Hotta

Kentaro Marutani

Hiroshi Hasegawa

Shiho Moriai

Shigeki Teramoto

Hiroaki Ono

Kazumi Sato

Toru Akishita

Naoyuki Sugeno

Koji Umetsu

Masanobu Katagi

Asami Yoshida

Yosuke Yamada

Noritoshi Imamura

Tomoaki Handa

Tomoyuki Ono

Kazuhito Tsuchida

Tsuyoshi Masato

Hidekazu Miyake

Fumihito Komakine

Provided is an electric storage device including: an electric storage unit; a temperature measurement unit that detects the temperature of the electric storage unit; a current measurement unit that measures the charge/discharge current of the electric storage unit; and a safety evaluation unit that calculates the safety evaluation value of the electric storage unit, where the safety evaluation unit determines a temperature range to which the temperature detected by the temperature measurement unit belongs among multiple temperature ranges, and calculates a safety evaluation value, based on the temperature range as a result of the determination and an accumulated value of a value related to the charge/discharge time of the electric storage unit.

Electric storage device, electric vehicle, and electric power system

There is provided a power storage device, a power storage control device, and a power storage control method for rapidly equalizing voltages of cells with a simple configuration. A power storage device including a plurality of cells which are connected in series; a plurality of reactance elements which are connected in series; a plurality of connection lines configured to connect the respective cells and the respective reactance elements in parallel in a one-to-one correspondence; a plurality of switching elements configured to independently open and close each of the connection lines; and a power storage control device configured to control the switching elements to cause energy to be transferred between the cells.

Power storage device, power storage control device, and power storage control method

The present disclosure provides a power storage device, a power storage control device, and a power storage control method for suppressing a burden imposed on a cell when voltages of cells are equalized. A power storage device includes: a plurality of cells which are connected in series; a series resonance circuit configured to include a reactor and a capacitor; and a power storage control device configured to control a connection state of the cells and the series resonance circuit. The power storage control device causes energy to be transferred between equal numbers of cells via the series resonance circuit.

A power storage apparatus includes a plurality of power storage modules connected in series and a control apparatus that controls each power storage module. The power storage module includes a battery section, a controller, a communication unit, a first insulator that insulates the controller from the communication unit, and a second insulator having a withstand voltage higher than a withstand voltage of the first insulator. The second insulator is provided between the communication unit of each power storage module and the control apparatus.

Power storage module, power storage apparatus, power storage system, control method, electronic apparatus, electric vehicle, and electric power system

Provided is a method for charging/discharging a battery pack having an auxiliary charging/discharging device and a battery assembly in which a plurality of secondary battery cell parallel modules, each of which includes a plurality of fasecondary battery cells connected in parallel, are connected in series, the method including, when there is no abnormality in the secondary battery cells during charging/discharging, connecting the auxiliary charging/discharging device in parallel to any of the secondary battery cell parallel modules, and when there is an abnormality in any of the secondary battery cells during charging/discharging, releasing connection to the secondary battery cell at which the abnormality has arisen in the secondary battery cell parallel module including the secondary battery cell at which the abnormality has arisen, and connecting the auxiliary charging/discharging device in parallel to the secondary battery cell parallel module including the secondary battery cell at which the abnormality has arisen.

Battery pack, method for charging/discharging same, and power consumption device

There are provided a secondary battery cell, a battery pack, and an electric power consumption device having a configuration and structure capable of accurately and easily detecting the state of the secondary battery cell in the battery pack. A secondary battery cellof the present invention includes an integrated circuit (an IC chip)having a measuring function to measure a battery status, the battery pack has a plurality of secondary battery cells of the present invention, and the electric power consumption device includes the battery pack of the present invention having the plurality of secondary battery cells of the present invention.

Secondary battery cell, battery pack, and electricity consumption device

A battery pack is provided. The battery pack has a plurality of secondary batteries and an inspection circuit. When the plurality of secondary batteries are classified into a first secondary battery group configured of secondary batteries selected from the plurality of secondary batteries and a second secondary battery group configured of remaining secondary batteries not belonging to the first secondary battery group, the inspection circuit creates a first data string of the secondary batteries configuring the second secondary battery group, based on a predetermined arithmetic rule, from identification marks of the secondary batteries configuring the first secondary battery group, obtains a second data string by examining identification marks of the secondary batteries configuring the second secondary battery group, subsequently compares the first data string with the second data string, and stops a function of the battery pack when the first data string and the second data string do not match.

Battery pack and method of inspecting storage state of secondary battery in battery pack

A battery pack and a method of inspecting a storage state of a secondary battery in the battery pack are provided. In the method of inspecting a storage state of a secondary battery in the battery pack, the battery pack includes (A) a plurality of secondary batteries and (B) a housing, the housing having a plurality of storage sections and containing the secondary batteries in the respective storage sections; a conductive memberis attached to an outer surface of each of the secondary batteries made of a non-conductive material; each of the storage sections is provided with at least two detection sections; and depending on a storage state of each of the secondary batteries in each of the storage sections, two detection sections are in contact with the conductive member, or at least one detection section is not in contact with the conductive member.

[Object] To enable charging/discharging amounts of secondary batteries connected in series to be accurately obtained without increasing the costs. [Solving Means] A power storage apparatus includes a battery section in which a plurality of power storage element sections each including at least one power storage element are connected in series, a cell-balancing circuit that are connected in parallel to a plurality of power storage element sections and performs a cell-balancing operation between plurality of power storage element sections, a control unit that controls the cell-balancing current flowing through the cell-balancing circuit, and an entire-current measurement section that measures a current value of an entire current flowing through the entire battery section and a cell-balancing current measurement section that measures a current value of the cell-balancing current.

Power storage apparatus and control method for a power storage apparatus

A battery pack and a simple construction is provided. The battery pack includes a plurality of secondary batteries, a housing storing the plurality of secondary batteries, and an inspection circuit stored in the housing. The housing includes a main body section and a closing member to close an opening for taking the plurality of secondary batteries in and out of the main body section, and includes a plurality of fixing members for fixing the closing member on the main body section, the plurality of fixing members being made of a conductive material. An attachment state of the fixing members with respect to the closing member and the main body section is monitored by the inspection circuit, and an attachment order of the fixing members with respect to the closing member and the main body section is memorized by the inspection circuit.

Battery pack and method of monitoring removal of secondary battery in battery pack

Provided is a secondary battery cell capable of reliably preventing an integrated circuit provided to the secondary battery cell from being removed from the secondary battery cell. A secondary battery cell () includes an integrated circuit (IC chip) () that stores identification information (for example, identification number (ID number) given to the integrated circuit itself). The integrated circuit () includes a wiring abnormality detection circuit. When the integrated circuit () is removed from the secondary battery cell (), the wiring abnormality detection circuit detects a wiring abnormality.

Secondary battery cell, battery pack, and power consumption device

A power consumption controller includes (a) a power consumption calculation section which sequentially calculates the power consumption level of a self-luminous display device based on a video signal input from the beginning of each frame up to the time of calculation, (b) a power consumption status determination section which determines whether the calculated power consumption level exceeds a reference value for comparison by constantly comparing the two levels. If this is the case, the same section detects the timing at which the power consumption exceeds the reference value for comparison and (c) a peak brightness control section which controls the peak brightness of the self-luminous display device if the power consumption level exceeds the reference value for comparison based on the detected timing.

Power consumption controller, image processor, self-luminous display apparatus, electronic equipment, power consumption control method and computer program

The present invention provides a character highlighting control apparatus including a character pixel extractor and a highlighting degree controller. The character pixel extractor is configured to extract a pixel corresponding to a character part from input image data. The highlighting degree controller is configured to carry out control in such a way that a maximum emission luminance of a display device is linked with input image data, to thereby selectively increase an emission luminance of an extracted pixel on a display screen and avoid increase of an emission luminance of a background part on the display screen.

Character highlighting control apparatus, display apparatus, highlighting display control method, and computer program

A display apparatus includes: an edge processing section extracting an edge component of a display data signal; a display data signal processing section changing the display data signal according to a level conversion signal and adding the edge component thereto; a level conversion signal generating section changing the level conversion signal according to the display data signal and a signal output from the display data signal processing section; and a display section performing a display operation according to the signal output from the display data processing section.

Growing community of inventors

Kanagawa, Japan

Atsushi Ozawa