Sumitomo Electric Industries, Limited

Panasonic Intellectual Property Management Co., Ltd.

Sumitomo Electric Fine Polymer, Inc.

Sumitomo Wiring Systems, Limited

Autonetworks Technologies, Limited

Sumitomo Riko Company Limited

Panasonic Holdings Corporation

Panasonic Energy Co., Ltd.

Shinya Nishikawa

Shigeyuki Tanaka

Hiroyuki Okawa

Yuhei Mayama

Takashi Iida

Takaya Kohori

Takayuki Hirai

Hiroshi Hayami

Tohru Watanabe

Taro Fujita

Satoshi Yamasaki

Changhui Yang

Yasutaka Emoto

Kazufumi Nishikawa

Ryota Fukumoto

Nayu Yanagawa

Yusuke Itakura

Takanori Yamazaki

Kiyoaki Moriuchi

Shuhei Yasuda

Masaharu Amaike

Ryohei Fujita

Ryouhei Fujita

Yuuki Yabe

Koji Muto

Takashi Hasegawa

Yoshiaki Nagao

Takashi Matsuda

Akira Nishimura

Kazutaka Katayama

Yoshiyuki Inoue

Kazuo Nakashima

Tomokazu Sada

Tetsuya Nakamura

Yuto Kobayashi

Yuji Ochi

Koji Mizutani

Keisuke Naito

Takashi Yajima

Takumi Ooshima

Kenta Tsuchiya

Ryosuke Nagase

Masakazu Takami

Atsushi Tsujino

Yoshito Sakamoto

Yoitsu Sekiguchi

Motoi Matsuda

Masaaki Takegata

Hayato Aoi

Kazuto Shiina

Masaki Hayakawa

Shohei Okabe

Mamoru Sekiguchi

Shigeyuki Yamakita

Shoshi Katakai

An information processing device acquires power consumption information indicating information corresponding to a power consumption amount per use unit of an electric apparatus driven by a battery; acquires initial capacity information indicating an initial capacity of the battery; calculates a first end of life of the battery on the basis of the power consumption information and the initial capacity information; acquires a second end of life of the battery set according to characteristics of the battery; and outputs a shorter one of the first end of life and the second end of life as a third end of life of the battery.

Information processing method and information processing system

An information processing device acquires charge/discharge information indicating a charge/discharge amount per unit period of a battery having a plurality of cells; acquires first relationship information indicating a relationship between the charge/discharge amount per the unit period and a deterioration degree of the battery; acquires second relationship information indicating a relationship between an elapsed time or the charge/discharge amount, and a voltage difference generated between the plurality of cells; acquires first cost information indicating a first cost generated by deterioration of the battery and second cost information indicating a second cost required for reducing the voltage difference; and determines, on the basis of the charge/discharge information, the first and second relationship information, and the first cost and second information, work timing at which the work in a charge/discharge plan is performed, the work timing being timing at which a sum of the first and second cost satisfies a predetermined requirement.

Information processing method, and information processing system

An information processing method includes: acquiring a weight of an electric mobile body; acquiring an amount of power consumption of the mobile body for each of numbers of one or more batteries mounted on the mobile body, the amount of power consumption being calculated based on the number of batteries; calculating a degradation cost of batteries for each of the numbers of the one or more batteries, the degradation cost being calculated based on the amount of power consumption and on the number of batteries; calculating a charging cost for each of the numbers of the one or more batteries, the charging cost being calculated based on the weight; and determining a number of batteries to be actually mounted on the mobile body, in accordance with the degradation cost and the charging cost, and outputting the number of batteries to be mounted.

Information processing method, information processing device, and information processing program

In a calculation system, a data acquisition unit is configured to acquire operation data of a battery, the operation data including at least voltages and currents measured by a management device at a plurality of time points, and states of charge (SOCs) estimated based on at least one of the voltages and the currents, the management device being configured to manage the battery. An extraction unit is configured to, extract, as sample data, a set of an SOC and a voltage from sets of the SOCs and the voltages the plurality of time points included in the operation data in a period in which the battery is regarded as resting, the period being specified based on the currents. An estimation unit is configured to estimate an SOC-open circuit voltage (OCV) characteristic of the battery based on the extracted sample data.

Calculation system, battery characteristic estimation method, and battery characteristic estimation program

A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials. The equivalent circuit model is a model including a diffusion resistance component for each of the plurality of materials for use in the positive electrode and the negative electrode.

Battery state estimation device, battery state estimation method, and battery system

An information processing method executed by a computer includes: acquiring an acceleration request for a mobile body that moves using a battery; calculating an output current in the battery based or the acceleration request; calculating a degradation degree of the battery based on the output current; generating an acceleration control instruction in response to the acceleration request in accordance with the degradation degree of the battery; and outputting the generated acceleration control instruction.

Information processing method, information processing device, and information processing system

A controller executes an equalization process of equalizing capacities of a plurality of cells, and a cell abnormality determination process of, of detected voltages of the plurality of cells, calculating a voltage difference between a representative voltage based on the detected voltage of at least one cell to be compared and the detected voltage of one cell to be detected at a first time and a second time, and when a difference between the two voltage differences is greater than or equal to a threshold value, determining that the cell to be detected is abnormal. In the case of executing the cell abnormality determination process during the equalization process, the controller provides the detected voltage of a target cell to be subjected to the equalization process with a compensation value corresponding to a voltage change based on energy transfer in the target cell due to the equalization process between the first time and the second time, and calculates the voltage difference at the second time.

Management device and power supply system

A non-ohmic composition including a base elastomer and a plurality of non-ohmic particles, wherein, in a case of comparing volume resistivities ρ for the non-ohmic composition within a range of E≥Efor the non-ohmic composition not elongated, the E being an electric field strength applied to the non-ohmic composition, the ρ being the volume resistivity of the non-ohmic composition, and the Ebeing a threshold electric field strength at a point where an absolute value of a variation in a slope of log ρ with respect to log E is maximum, the volume resistivity ρ for the non-ohmic composition uniaxially elongated by 50% is 50 times or less the volume resistivity ρ for the non-ohmic composition not elongated.

Non-ohmic composition, cable connection unit, and method for producing cable connection unit

Provided is a controller configured: to calculate, among voltages detected from a plurality of cells, a voltage difference between the voltage detected from one cell of the plurality of cells, the one cell to be detected, and a representative voltage at each of a first time and a second time, the representative voltage based on the voltage detected from at least one cell of the plurality of cells, the at least one cell to be compared; and when a discrepancy between the voltage difference at the first time and the voltage difference at the second time is equal to or more than a threshold, to determine that an abnormality has occurred in the one cell to be detected. The controller refers to a state-of-charge versus open-circuit-voltage (SOC-OCV) curve of the one cell to be detected in accordance with a state-of-health (SOH) of the one cell to be detected, so as to estimate an SOC as initial capacitance reference of the one cell to be detected in correspondence to the voltage detected from the one cell to be detected. The controller introduces a linear function using an SOC as initial capacitance reference as an input variable, using an OCV as an output variable, and having a predetermined inclination, and applies the SOC as initial capacitance reference of the one cell to be detected that the controller has estimated to the linear function, so as to derive an OCV. Then, in place of the voltage detected from the one cell to be detected, the controller uses the OCV that the controller has derived, so as to calculate the voltage difference at the first time and the voltage difference at the second time.

The power conditioner determines possible total power and working individual power to be in a range that possible individual power of each of the power supply units is not exceeded. The possible total power is determined from the possible individual power, of each of the power supply units, determined based on the battery information detected by each of the unit controllers, collected by a master controller from each of the unit controllers. The working individual power is determined based on a power deviation indicating a difference of charging and discharging power between the power supply units. The power conditioner causes charging and discharging of each of the power supply units within the calculated working individual power.

Power supply system, control system and power control method for power supply system

A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell, and a state of charge (SOC) of the battery cell is estimated based on the estimated OCV, SOC-OCV characteristics on a charge side of the battery cell, and SOC-OCV characteristics on a discharge side of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials. Estimated is a current flowing through a material in which capacity-OCV characteristics are different between the charge side and the discharge side, the material being included in the plurality of materials contained in the mixed electrode, and a ratio between the SOC-OCV characteristics on the charge side and the SOC-OCV characteristics on the discharge side is determined based on the current.

A weather-resistant flame-retardant resin composition includes: a polyolefin resin; a mixture of (poly) phosphate compounds, a total content of which is from 10 to 50 parts by mass with respect to 100 parts by mass of the polyolefin resin; 0.1 to 10 parts by mass a non-crosslinked silicone raw rubber having a number-average molecular weight of 10,000 to 1,000,000; and 0.1 to 20 parts by mass of an inorganic UV light shielding agent, and an electric wire and an optical fiber cable whose jacket is formed by the weather-resistant flame-retardant resin.

Weather-resistant flame-retardant resin composition, optical fiber cable, and electric wire

A voltage measurer measures a voltage of a battery cell. A controller controls charging-discharging of the battery cell. The controller performs control to apply a reverse current for canceling a polarization voltage of the battery cell through the battery cell after the completion of charging-discharging of the battery cell. For example, after the charging-discharging of the battery cell completes, the controller sets a current command value, in a power converter, that instructs flow of a reverse current of a preset value for a preset time.

Battery system and battery management device for cancelling polarization voltage by applying a reverse current

A managing device calculates a whole state of power (SOP) that is an SOP of a whole of the plurality of power storage blocks based on SOPs of the respective power storage blocks and currents flowing through the respective power storage blocks, and sets an upper limit value of power or a current for at least one of charging and discharging by a power converter, based on the whole SOP thus calculated. The managing device estimates a current flowing through each of the power storage blocks from a voltage and an internal resistances of each of the power storage blocks before the power converter starts power conversion.

Electricity storage system and management device

An electric wire with a terminal, includes an insulated wire which includes a core wire and an insulating layer covering the core wire, a seal member which is disposed in one end portion of the insulated wire and covers the insulating layer, a metal terminal which extends from the end portion of the insulated wire and is connected to the core wire and a waterproof resin portion which covers from a seal member covering part of the insulated wire to an electrical connection part of the metal terminal. The insulating layer contains an olefin resin. The waterproof resin portion contains a polyester, a polyamide, an ethylene-vinyl acetate copolymer, or a mixed resin thereof. The seal member includes an inner layer containing an ethylene resin and an outer layer laminated on the inner layer and containing a polyester, a polyamide, an ethylene-vinyl acetate copolymer, or a mixed resin thereof.

Electric wire with terminal and method for manufacturing same

Growing community of inventors

Osaka, Japan

Shinya Nishikawa