Terumo Kabushiki Kaisha

Nec Corporation

Nissan Motor Company Limited

Nec Energy Devices, Ltd.

Other

Kenichi Shimura

Kazuhiko Inoue

Makoto Onishi

Daisuke Kawasaki

Noboru Yoshida

Naoki Ishii

Masashi Watanabe

Jiro Iriyama

Takao Anzai

Yoko Hashizume

Akira Mochizuki

Gen Takayama

Yuta Motohashi

Teruyuki Yatabe

Makoto Ohnishi

Tadahiko Sugibayashi

Kaoru Mori

Noboru Sakimura

Takeshi Honda

Takehiro Noguchi

Hiraku Murayama

Atsushi Kamijo

Kazushige Ishiura

Kuniko Kikuta

Kenichi Hamada

Kenji Ishikawa

Ken Tatebe

Hisao Matsutera

Yasunobu Zushi

Naoyuki Maeda

Makiko Uehara

Akinobu Nakamura

Yuji Nakagawa

Yoshitaka Ohmura

Naohisa Okushi

Takashi Ohwada

Hideaki Kitou

Yoshiyuki Hashimoto

Taku Aoike

Provided is a battery comprising a separator comprising inorganic particles for preventing a short-circuit, wherein the inorganic particles are not removed readily from the separator. This battery is characterized by comprising a separator comprising a base material resin having voids and an inorganic particle having a surface (A) facing the void and a surface (B) in contact with the resin, wherein the length of the surface (A) is 50% or more of the length of the outer periphery of the particle in a cross-sectional SEM photograph of the separator.

Secondary battery

Lithium ion secondary batteries are disclosed that include a positive electrode comprising a lithium nickel composite oxide as a positive electrode active material and a separator consisting of one or more layers selected from polyimide layer, polyamide layer, the battery having a low self-discharge failure rate even after long term storage. The lithium ion secondary batteries can include a positive electrode comprising a lithium nickel composite oxide and a separator consisting of one or more layers selected from polyimide layer, polyamide layer, and polyamide imide layer, wherein the battery comprises an acid and/or an acid anhydride in an electrolyte solution and/or a member in contact with the electrolyte solution.

Lithium-ion secondary battery

Provided is a battery capable of surely interrupting current at the time of temperature rise so that excessive heat generation does not occur at the occurrence of an abnormality. The batteryincludes a battery elementincluding a positive electrode and a negative electrode, an inner packagewhich forms a first chamberfor enclosing the battery elementan outer packagewhich encloses the inner packagesuch that the outer packageforms a second chamberwhich surrounds the first chamberand a pair of terminalselectrically connected to the positive electrode and the negative electrode and led out to the outside of the outer packageOne terminalof the pair of terminalshas a first terminaland a second terminalarranged so as to be electrically connected in the second chamberA gas generating materialwhich generates gas at a predetermined temperature or higher or a predetermined voltage or higher is enclosed in the first chamberor the second chamber

Battery and method for manufacturing same

The separator for secondary battery, comprising: a porous substrate having a melting temperature or a decomposition temperature of 200&#xb0; C. or more; and a resin member formed at least inside of the substrate in a plane section that occupies at least a part of a plane along with a thickness direction of the substrate; wherein said resin member is coated on inner surfaces of pores without completely blocking connecting paths that connects pores of the porous member, and wherein a distribution density of the resin member becomes lower toward inside of the substrate.

Separator including resin member formed inside porous substrate, and secondary battery equipped therewith

With a battery using a flexible outer package, electric current is reliably interrupted when the temperature is increased due to the occurrence of abnormality, thereby preventing excessive heat generation. A batteryincludes a battery element, a pair of first terminalsthat are electrically connected to the battery element, a flexible outer package, and a second terminal. The outer packageis partitioned into a first chamberin which the battery elementis sealed and a second chamberwhich is adjacent to the first chamber. The second terminalis led out from the second chamberto the outside of the outer packageso that one first terminalis made electrically connectable to an external wiring through the second chamber. A gas generation materialwhich generates a gas at a predetermined temperature or higher is sealed in the second chamber

Battery having current interrupting function and method for manufacturing same

The object is to provide a lithium ion secondary battery which has an excellent cycle property even in high-temperature environment and which has small volume increase. An exemplary embodiment of the invention is a lithium ion secondary battery, comprising: a positive electrode, a negative electrode comprising a negative electrode active material, and an electrolyte liquid; wherein the electrolyte liquid comprises a chain-type fluorinated ester compound represented by a predetermined formula and a chain-type fluorinated ether compound represented by a predetermined formula; wherein the negative electrode active material comprises metal (a) that can be alloyed with lithium, metal oxide (b) that can absorb and desorb lithium ion, and carbon material (c) that can absorb and desorb lithium ion; and wherein metal (a) is silicon, and metal oxide (b) is silicon oxide.

Secondary battery and electrolyte liquid

Provided is a secondary battery which uses a heat generating reaction of the redox shuttle agent to achieve stopping a function of the battery by blocking ion conduction and rapidly increasing an internal resistance by means of volatilized non-aqueous solvent when an abnormality such as overcharge occurs. A secondary batterycomprises a battery element comprising a positive electrode, a negative electrode, a separator, and an electrolytic solution, and a casing sealing the battery element. The electrolytic solution comprises a redox shuttle agent and an organic solvent having a boiling point of 125&#xb0; C. or less. The separatorcomprises aramid fiber assembly, aramid microporous structure, polyimide microporous structure or polyphenylenesulfide microporous structure, and polyphenylenesulfide, and has an average void size of 0.1 &#x3bc;m or more.

Secondary battery and production method therefor

The present invention relates to a lithium ion secondary battery comprising a positive electrode having a coating amount per unit area of 50 mg/cmor more and an electrode density of 3.3 g/cc or more and a negative electrode having a coating amount per unit area of 24 mg/cmor more and an electrode density of 1.5 g/cc or more, a separator having a shrinking ratio of 2% or less by heat treatment at 80&#xb0; C. for 6 hours, and an electrolyte solution comprising at least one sulfonic acid ester compound, and a ratio of a sulfur content in the central portion (As) and a sulfur content in the edge portion (Bs) of the positive electrode and the negative electrode, in each, is 0.7&#x2264;As/Bs&#x2264;1.1.

Lithium ion secondary battery and method for manufacturing same

Medicament sprayer

A balloon in which a rupture in a circumferential direction can be prevented from occurring, and a method of manufacturing the same is disclosed. The balloon is configured to be arranged on a medical catheter, and includes a dilatable cylindrical portion formed with a birefringent polymer material. A ratio of the number of orientation distributions, calculated by dividing the number of orientation distributions of the cylindrical portion in a circumferential direction by the number of orientation distributions of the cylindrical portion in an axial direction, is less than 2.

Balloon and method of manufacturing the same

The present invention provides a separator drastically reducing the short-circuit between electrodes and having satisfactory ionic conductivity on the basis of the use of inorganic materials. The separatorhas a substrateincluding a layer formed by using an inorganic material so as to have a plurality of openings, and an inorganic fiber layerlaminated on one surface or both surfaces of the substrateso as to cover the openings of the substratewithout blocking the openings of the substrate. The thickness of the separatoris 100 &#x3bc;m or less.

Separator, electrode element, electric energy storage device and method for producing separator

The object is to provide a secondary battery which has an excellent cycle property even in high-temperature environment and which has small resistance increase even when it is used in high-temperature environment. An exemplary embodiment of the invention is a secondary battery, comprising: a positive electrode, a negative electrode, and an electrolyte liquid; wherein the electrolyte liquid comprises a chain-type fluorinated sulfone compound represented by a predetermined formula.

In a vacuum container (), a bag-shaped laminate film () containing a battery element () and having an opening () is pinched at positions corresponding to two principal surfaces () of the battery element (), the battery element () having a positive layer and a negative layer stacked via a separator. Pressure in the vacuum container () is reduced. An electrolytic solution () is poured from an electrolytic-solution supply line () into the bag-shaped laminate film () through the opening () with pressure in the vacuum container () kept reduced until the entire battery element () is immersed in the electrolytic solution (). The reduced pressure in the vacuum container () is increased to make the battery element () absorb the electrolytic solution () by means of the difference in pressure.

Manufacturing method for film-covered electrical device

In a vacuum container (), a bag-shaped laminate film () containing a battery element () and having an opening () is pinched at positions corresponding to two principal surfaces () of the battery element (), the battery element () having a positive layer and a negative layer stacked via a separator. Pressure in the vacuum container () is reduced. An electrolytic solution () is poured from an electrolytic-solution supply line () into the bag-shaped laminate film () through the opening () with pressure in the vacuum container () kept reduced until the entire battery element () is immersed in the electrolytic solution (). The reduced pressure in the vacuum container () is increased to make the battery element () absorb the electrolytic solution () by the difference in pressure.

Manufacturing method and manufacturing apparatus for film-covered electrical device

Growing community of inventors

Tokyo, Japan

Kenichi Shimura