Nissan Motor Company Limited

Sanyo Chemical Industries, Ltd.

Apb Corporation

Gunze Limited

Ajinomoto Co., Ltd.

Jsr Corporation

Sumitomo Metal Mining Company, Ltd.

Enax, Inc.

Sanyo Chemical Ltd.

Nissan Motor &#x2022;co., Ltd.

Hideaki Horie

Osamu Shimamura

Yasuhiko Ohsawa

Hiroshi Akama

Takaaki Abe

Yuki Kusachi

Hajime Satou

Yusuke Mizuno

Yasuhiro Shindo

Kenji Hosaka

Yasuhiro Tsudo

Takamitsu Saito

Kenichi Kawakita

Kyoichi Watanabe

Hiroshi Sugawara

Yusuke Nakashima

Takanori Ito

Yoshio Shimoida

Mikio Kawai

Takuya Kinoshita

Masatoshi Okura

Hajime Sato

Toyoaki Nakagawa

Hiroshi Fukumoto

Kyouichi Watanabe

Ken Iwai

Yasunari Hisamitsu

Yuuji Tanjou

Ryosuke Kusano

Naofumi Shoji

Takanori Itou

Ryouichi Senbokuya

Yuji Tanjo

Masaaki Suzuki

Tomohiro Kaburagi

Namio Irie

Masanori Aoyagi

Kazuki Miyatake

Yasuhiro Yanagihara

Masato Fukino

Yuuji Tanjo

Taketo Kaneko

Kazuya Minami

Tomaru Ogawa

Kazuya Tsuchida

Kotaro Nasu

Yuta Murakami

Yohji Kawasaki

Hiroyuki Tanaka

Masanobu Sato

Manabu Watanabe

Koji Sumiya

Yasuyuki Koga

Nobuo Ando

Tatsuhiro Fukuzawa

Shigeo Ibuka

Kouichi Nemoto

Teruo Segawa

Terukazu Kokubo

Yoshiaki Nitta

Motoharu Obika

Gen Takayama

Yuichiro Yokoyama

Masato Origuchi

Takamasa Nakagawa

Kazuyuki Yoda

Noboru Yamauchi

Shigehito Asano

Yasuo Ohta

Kazuaki Onishi

Yuuki Kusachi

Kazunori Ozawa

Junichi Kasai

Masakazu Kobayashi

Satoshi Matsumoto

Hiroshi Amano

Hideki Nishimura

Takashi Honda

Fumio Munakata

Satoru Ichikawa

Gentaro Kano

Kenji Ohara

Kazuki Arihara

Shinya Kobayashi

Manabu Kaseda

Sohei Suga

Yasuyuki Tanaka

Yusuke Emori

Masanori Koike

Shiho Inoue

Chizuru Matsuyama

Haruyuki Saito

Tomoya Kubota

Takahiro Iwasaki

Takao Takasaki

Masaaki Taniguchi

Masahiko Teramoto

Shinichi Akaishi

Yukinari Kato

Chiduru Matsuyama

A method of manufacturing a battery electrode includes a powder supply step, a vibration step, a sorting step, a moving step, and a deposition step, in the powder supply step, a powdercomposed of granulated particles is supplied, in the vibration step, vibration is applied to the powder, in the sorting step, the powder is caused to pass through at least one opening H, Hto adjust a particle diameter of the granulated particles to a particle diameter that allows passing through the opening, in the moving step, the powder that has passed through the opening is moved from an outlet position Pof the opening to a supply position Pwhere the powder is supplied to the surface of a current collector, and in the deposition step, the powder is deposited on the surface of the current collector. With the method of manufacturing a battery electrode, it is possible to provide a battery electrode that can improve battery performance by making a thickness and a density of the powder composed of granulated particles supplied onto the current collector uniform.

Method of manufacturing battery electrode

A manufacturing method is provided for manufacturing an electrode for a lithium-ion battery having a current collector and an electrode active material layer. In the method, an electrolytic solution is added to particles created by pulverizing a mixture containing electrode active material particles and a pressure sensitive adhesive resin to obtain an electrode active material composition. The electrode active material composition is molded into sheet form on a current collector using a roll press. The electrode active material composition has a weight of the electrolytic solution based on a total weight of the electrode active material composition that is 0.1-50 wt %.

Method for manufacturing electrode for lithium ion battery

An examination method includes bringing conductor probes into contact with surfaces of an examination target to measure voltage or electric resistance at points on the surfaces of the examination target, and determining whether or not the voltage or the electric resistance is out of an allowable range at any of the points. The examination target is a resin current collector, an electrode sheet having an active material layer laminated on a resin current collector, a separator-attached electrode sheet in which a separator is combined with an electrode sheet, or a unit cell including one set of a positive electrode resin current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode resin current collector, which are laminated in order. With the examination method, a defect such as a short circuit can be easily found and production yield can be improved.

Examination method for malfunction detection

A predoping method for a negative electrode active material to dope the negative electrode active material with lithium ions using an electrolyte solution that includes lithium ions. The electrolyte solution includes at least one type of additive having a reduction potential higher than a reduction potential of a solvent contained in the electrolyte solution.

Predoping method for negative electrode active material, manufacturing method for negative electrode, and manufacturing method for power storage device

The present invention aims to provide a method for producing a pinhole-free thin resin current collector for negative electrodes. The method for producing a sheet-shaped resin current collector for negative electrodes of the present invention includes stacking three or more layers of melts of conductive resin compositions each containing a polyolefin and a conductive filler to obtain a multilayered body, wherein the polyolefin contained in each of the conductive resin compositions that form the respective layers of the multilayered body has a melt mass flow rate of 15 to 70 g/10 min as measured at a temperature of 230° C. and a load of 2.16 kg in accordance with JIS K7210-1:2014.

Method for producing resin collector for negative electrodes, method for producing negative electrode for lithium ion batteries, and method for producing lithium ion battery

A lithium ion battery including a cell formed by sequentially stacking a positive current collector, a positive active material layer, a separator, a negative active material layer, and a negative current collector, the lithium ion battery being characterized by including a frame member disposed between the positive current collector and the negative current collector to seal the positive active material layer, the separator, and the negative active material layer, the frame member having, disposed therein, an electronic component for detecting an internal condition of the cell.

Lithium ion battery and method for assessing deterioration of lithium ion battery

Provided is a lithium-ion assembled battery in which two or more single cells are laminated and the DC resistance value between the single cells is low. The assembled battery has two or more single cells including a laminating unit in which a positive electrode current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode current collector are laminated in order, in the assembled battery, one single cell and the other single cell are laminated such that the positive electrode current collector of the one single cell and the negative electrode current collector of the other single cell are in contact with each other, the positive electrode current collector is made up of a conductive resin layer containing a polyolefin resin (A1) and a conductive carbon filler (B1), the negative electrode current collector is made up of two or more kinds of conductive layers, and the conductive layer disposed on an outer side among the conductive layers in the negative electrode current collector contains the polyolefin resin (A1) and the conductive carbon filler (B1).

Lithium ion assembled battery

To provide a negative electrode for a non-aqueous electrolyte secondary battery that can be produced even without performing a heat treatment at a high temperature such as 2,000&#xb0; C. or higher and can have the discharge capacity and the cycle characteristics (capacity retention) further increased. The negative electrode for a non-aqueous electrolyte secondary battery according to the invention has a configuration in which a negative electrode active material layer containing a negative electrode material and a binder is formed on the surface of a current collector. Further, the negative electrode material has a core portion including carbonaceous negative electrode active material particles; and a shell portion including a polyimide and silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles. Here, there is a feature that the content of the silicon-based negative electrode active material particles and/or tin-based negative electrode active material particles with respect to 100% by mass of the content of the carbonaceous negative electrode active material particles is 2% to 20% by mass. Furthermore, there is a feature that the binder is formed of a hydrophilic unit and a hydrophobic unit bonded together.

Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using the same

A cell system includes: a stacked-type cell module () having a plurality of lithium ion unit cells () being stacked and having through holes () formed therein; a gas supply part (); a cooling liquid supply part (); a temperature sensor (); and a control part () that controls switching between a normal control mode and a high-temperature control mode based on a signal from the temperature sensor (). In the normal control mode, the control part () controls the gas supply part () to supply a gas to the through holes (), and at the same time, controls the cooling liquid supply part () to stop supply of a cooling liquid, and in the high-temperature control mode, the control part () controls the cooling liquid supply part () to supply the cooling liquid to the through holes () to which the gas is supplied, and at the same time, controls the gas supply part () to stop supply of the gas. According to this cell system, the increase in temperature of the cell is suppressed while having a simple configuration with a reduced formation region of through holes provided in a lithium ion cell.

Cell system

The battery pack has a laminated body in which unit cells are laminated one on another, a cell case having a first opening and containing the laminated body, and a first lid member to tightly close the first opening. The first opening is positioned to face, in connection with a unit cell laminated direction, a first face of the laminated body. The first lid member is configured to, if an internal pressure of the cell case is lower than atmospheric pressure, deform while keeping the tightly closing state, come into contact with the first face of the laminated body, and apply a pressure based on a differential pressure between atmospheric pressure and the internal pressure of the cell case to the contacting face.

Battery pack

A predoping method for a negative electrode active material to dope the negative electrode active material with lithium ions. The predoping method for a negative electrode active material includes: a predoping process and a post-doping modification process. In the predoping process, the negative electrode active material is doped with lithium ions, to thereby reduce a potential of the negative electrode active material relative to lithium metal. In the post-doping modification process, after the predoping process, reaction is caused between a reactive compound that is reactive with lithium ions and lithium ions doped into the negative electrode active material, to thereby increase the potential of the negative electrode active material relative to lithium metal. The potential of the negative electrode active material relative to lithium metal is 0.8 V or more at completion of the post-doping modification process.

The present invention provides a viscous adhesive capable of retaining the shape of an electrode and allowing for production of an electrode for a lithium-ion battery having a structure in which the energy density of the electrode does not decrease. The present invention relates to a viscous adhesive for a lithium-ion electrode which allows active materials to adhere to each other in a lithium-ion electrode, the viscous adhesive having a glass transition temperature of 60&#xb0; C. or lower, a solubility parameter of 8 to 13 (cal/cm), and a storage shear modulus and a loss shear modulus of 2.0&#xd7;10to 5.0&#xd7;10Pa as measured in a frequency range of 10to 10Hz at 20&#xb0; C., wherein the viscous adhesive is an acrylic polymer essentially containing a constituent unit derived from a (meth)acrylic acid alkyl ester monomer, the proportion of the (meth)acrylic acid alkyl ester monomer in monomers constituting the viscous adhesive is 50 wt % or more based on the total monomer weight, and the proportion of a fluorine-containing monomer is less than 3 wt % based on the total monomer weight.

Adhesive for lithium-ion electrode, electrode for lithium-ion battery and method for manufacturing electrode for lithium-ion battery

A resin current collector provides means for improving the cycle characteristics in a lithium ion battery and includes a polyolefin resin, and a conductive carbon filler. The total surface area of the conductive carbon filler contained in 1 g of the resin current collector is 7.0 mor more and 10.5 mor less.

Resin current collector, multilayer current collector and lithium ion battery

A current collector for a lithium ion battery includes a first conductive resin layer and a second conductive resin layer. The first conductive resin layer includes a first conductive filler. The second conductive resin layer is formed on the first conductive resin layer and includes a second conductive filler. The first conductive filler is a conductive carbon. The second conductive filler contains at least one kind of metal element selected from the group consisting of platinum, gold, silver, copper, nickel, and titanium. A volume % of the second conductive filler in the second conductive resin layer on a first surface side, which is a first conductive resin layer side, is higher than that on the second surface side that is opposite to the first conductive resin layer.

Current collector for lithium ion battery and manufacturing method of the current collector

The present disclosure provides a secondary battery module capable of optically transmitting measurement data on characteristics of cells forming a battery pack and further reducing a complicated procedure of wiring. The secondary battery module of the present disclosure includes: a battery pack in which a plurality of cell units are connected, each of the cell units including a cell and a light-emitting unit, the cell including a stacked unit and an electrolyte, the light-emitting unit being configured to measure characteristics of the cell and generate an optical signal according to the characteristics; and an optical waveguide into which an optical signal is introduced from the light-emitting unit of each of the cell units, wherein the number of optical waveguides is less than the number of optical signals, and the optical waveguide provides a common optical path through which optical signals are propagated from the light-emitting units provided in the battery pack.

Secondary battery module

Growing community of inventors

Yokosuka, Japan

Hideaki Horie