Nissan Motor Company Limited

Automotive Energy Supply Corporation

Enax, Inc.

Osamu Shimamura

Hideaki Horie

Takaaki Abe

Takamitsu Saito

Kenji Hosaka

Hiroshi Sugawara

Kyoichi Watanabe

Takuya Kinoshita

Yuuji Tanjou

Fumihiro Kawamura

Hajime Sato

Takashi Honda

Yoshio Shimoida

Shigeo Ibuka

Takeshi Miyamoto

Kenji Ohara

Kazuki Miyatake

Yasuhiro Yanagihara

Masaaki Suzuki

Yasuhiko Ohsawa

Satoru Ichikawa

Gentaro Kano

Masahiro Takaya

Mikio Kawai

Yoshiaki Nitta

Kazunori Ozawa

Masakazu Kobayashi

Hajime Satou

Toyoaki Nakagawa

Tatsuhiro Fukuzawa

Fumio Munakata

Mori Nagayama

Takanori Ito

Kyouichi Watanabe

Kousuke Hagiyama

Ikuma Matsuzaki

Yasunari Hisamitsu

Keisuke Matsumoto

Manabu Kaseda

Tamaki Hirai

Ryouichi Senbokuya

Kuniharu Nomoto

Ryuuta Yamaguchi

Manabu Nishijima

Takanori Itou

Kosuke Hagiyama

Taketo Kaneko

Masanori Suenaga

Tomaru Ogawa

Ryuta Yamaguchi

Yuichiro Yamamura

Takamitsu Saitou

Naoto Kiriu

Masanori Aoyagi

Ken Iwai

Yuuji Tanjo

Shiho Inoue

Takao Takasaki

Sayaka Yonehara

Hironori Ozawa

Kenji Hamada

Yamamura Yuichiro

Yukinori Takahashi

Norikazu Mineo

Hideaki Hori

Yanagihara Yasuhiro

The present invention provides a non-aqueous electrolyte secondary battery with various improved battery characteristics and a method for manufacturing such a non-aqueous electrolyte secondary battery. In the present invention, the battery manufacturing method includes accommodating and sealing a flat battery element () in which a positive electrode plate () and a negative electrode plate () stacked together via a separator (), together with a non-aqueous electrolyte including a surplus electrolyte and at least one kind of electrolyte additive, in a laminate film exterior member (), and then, subjecting the thus-assembled battery () to charging operation including at least initial charging in a state where a pressure is applied to a flat surface of the battery element from the outside of the exterior member ().

Nonaqueous electrolyte secondary battery and method for manufacturing same

A non-aqueous electrolyte secondary battery can efficiently discharge the gas generated to the outside of the electrode and exhibits a low decrease in battery capacity even when used for a long period of time in the case of using an aqueous binder as the binder of a negative electrode active material. The non-aqueous electrolyte secondary battery has a positive electrode active material layer is formed on a surface of a positive electrode current collector, a negative electrode active material layer is formed on a surface of a negative electrode current collector, and a separator, wherein the density of the negative electrode active material layer is from 1.3 to 1.6 g/cm, the negative electrode active material layer contains an aqueous binder, and the surface center line average roughness (Ra) of a surface on a separator side of the negative electrode active material layer is from 0.5 to 1.0 &#x3bc;m.

Non-aqueous electrolyte secondary battery

A non-aqueous electrolyte secondary battery, when using an aqueous binder as a binder for a negative electrode active material, effectively exhausts the gas generated from an electrode, and thus, even when using it for a long period of time, a decrease in battery capacity is low. The non-aqueous electrolyte secondary battery includes a positive electrode active material layer on a surface of a positive electrode current collector, a negative electrode active material layer comprising an aqueous binder on a surface of a negative electrode current collector, a separator for maintaining an electrolytic solution, and a gas releasing means for releasing a gas generated within the power generating element to an extra space inside of the outer casing, and in which the ratio value of a volume of the extra space to a volume of pores included in the power generating element is 0.5 to 1.0.

[Object] Provided is a means which is capable, with respect to a non-aqueous electrolyte secondary battery, of suppressing a decrease in capacity when the battery is used for a long period of time, and improving cycle characteristics. [Solving Means] Provided is a positive electrode active substance for a non-aqueous electrolyte secondary battery, the positive electrode active substance being a lithium-nickel-manganese-cobalt composite oxide and having true density of 4.40 to 4.80 g/cm.

Positive electrode active substance, positive electrode material, positive electrode, and non-aqueous electrolyte secondary battery

A non-aqueous electrolyte secondary battery allows gas generated when an aqueous binder is used as a binder of a negative electrode active material to be effectively discharged from the electrode, and has small decrease of the battery capacity despite use over a long period of time. The non-aqueous electrolyte secondary battery has a positive electrode active material layer, a negative electrode active material layer, and a separator. The density of the negative electrode active material layer is 1.4 to 1.6 g/cm, an electrolyte solution layer is disposed between at least one layer of the negative electrode active material layer and the positive electrode active material layer, and the separator, and the ratio of total thickness of the positive electrode, the negative electrode and the separator to total thickness of the positive electrode, the negative electrode, the separator and the electrolyte solution layer, is 0.85 or more and less than 1.0.

[Object] Provided is a means for improving cycle characteristics by suppressing electrode deterioration resulting from non-uniformity of voltage across an electrode plane in a high-capacity and large-area non-aqueous electrolyte secondary battery that includes lithium nickel-based composite oxide as a positive electrode active substance. [Solving Means] Disclosed is a positive electrode for a non-aqueous electrolyte secondary battery used in a non-aqueous electrolyte secondary battery in which the ratio value of battery area (projected area of the battery including the battery outer casing body) to rated capacity is 5 cm/Ah or more and the rated capacity is 3 Ah or more, the positive electrode comprising a positive electrode current collector and a positive electrode active substance layer that is formed on a surface of the positive electrode current collector and has a positive electrode active substance containing a lithium nickel-based composite oxide and a spinel type lithium manganese composite oxide, in which, when the average secondary particle diameter (D50) of the lithium nickel-based composite oxide is D50(A) [&#x3bc;m], the content ratio of the lithium nickel-based composite oxide in the positive electrode active substance layer is A [% by mass], the average secondary particle diameter (D50) of the spinel type lithium manganese composite oxide is D50(B) [&#x3bc;m], and the content ratio of the spinel type lithium manganese composite oxide in the positive electrode active substance layer is B [% by mass], the positive electrode satisfies the following Mathematical Formula 1 and Mathematical Formula 2:

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

[Object] Provided is a means for improving cycle characteristics by suppressing electrode deterioration resulting from non-uniformity of voltage across an electrode plane in a high-capacity and large-area non-aqueous electrolyte secondary battery that includes lithium nickel-based composite oxide as a positive electrode active substance. [Solving Means] Disclosed is a positive electrode for a non-aqueous electrolyte secondary battery used in a non-aqueous electrolyte secondary battery in which the ratio value of battery area (projected area of the battery including the battery outer casing body) to rated capacity is 5 cm/Ah or more and the rated capacity is 3 Ah or more, the positive electrode comprising a positive electrode current collector and a positive electrode active substance layer that is formed on a surface of the positive electrode current collector and has a positive electrode active substance containing a lithium nickel-based composite oxide and a spinel type lithium manganese composite oxide, in which, when the average secondary particle diameter (D50) of the lithium nickel-based composite oxide is D50(A) [&#x3bc;m], the content ratio of the lithium nickel-based composite oxide in the positive electrode active substance layer is A [% by mass], the average secondary particle diameter (D50) of the spinel type lithium manganese composite oxide is D50(B) [&#x3bc;m], and the content ratio of the spinel type lithium manganese composite oxide in the positive electrode active substance layer is B [% by mass], the positive electrode satisfies the following Mathematical Formula 1 and Mathematical Formula 2:[Math. 1]0.5&#x2266;50()/50()&#x2266;2.0&#x2003;&#x2003;MathematicalFormula1:/()&#x2267;0.2&#x2003;&#x2003;MathematicalFormula2:

An automobile cell is provided with an electric power generating element composed of a positive electrode having a positive electrode active substance layer, a negative electrode having a negative electrode active substance layer and a separator interposed between the electrodes, a cell outer sheath made of a laminate film compositely composed of polymer and metal, a positive electrode terminal lead electrically conductive with the positive electrode and extending to an outside of the cell outer sheath, and a negative electrode terminal lead electrically conductive with the negative electrode and extending to the outside of the cell outer sheath. The positive electrode and the negative electrode associated therewith via the separator defines a unit electrode, and the relationship between a thickness of the automobile cell and a sum of a thickness of the positive electrode active substance layer and a thickness of the negative electrode active substance layer of the unit electrodes, is defined such that a value obtained by dividing the former by the latter is equal to or less than 80.

Automobile cell and related method

A battery moduleis structured to include a flat-type battery 40 in which current can be taken out from both faces of an electric generation elementin a layered direction, flat-plate-type electrode tabsandhaving a face contact with a current-taking-out plane of the flat-type battery to take out current, and a packaging casecovering the flat-type battery and the electrode tab. The inner face of the packaging case and the electrode tab have therebetween an elastic member

Battery module, assembled battery, and vehicle including these batteries

The disclosure discusses a secondary battery with superior durability and a vehicle configured to mount the same. The secondary battery comprises an electrode structure wherein a cathode is formed at one side of a base material layer having electrical insulating property and an anode is formed at another side of the base material layer. A plurality of electrode structures are stacked with an electrolyte layer interposed therebetween such that the cathode and anode of adjacent electrode structures are on opposite sides of the electrolyte layer.

Secondary battery and vehicle mounting the same

A secondary battery includes: an electric cell layer including a stack structure sequentially including: a positive electrode layer, a separator layer, and a negative electrode layer having an electrolyte higher in conductivity than an electrolyte of at least one of the separator layer and the positive electrode layer.

Secondary battery and method of producing the secondary battery

An electrode includes a collector formed with a conductive resin layer and an active material layer formed on the conductive resin layer. The active material layer comprises an active material and a binder polymer, and the conductive resin layer is bonded by thermal fusion bonding to the active material layer.

Electrode and production method thereof

A battery including an electrode and electrode terminal, the electrode comprising a multilayered collector assembly having a multilayered portion that includes an insulation layer and two electrically conductive layers disposed on opposite sides of the insulation layer, and a conductive portion made of an electrically conductive material, connected to the two conductive layers and extending therefrom more toward a side end of the electrode than a side end of the insulation layer so as to be electrically connected to the electrode terminal, and a pair of active material layers disposed on opposite sides of the multilayered portion.

Laminate type battery

Embodiments of a battery taught herein are directed to preventing a displacement between bipolar battery stacks or between a bipolar battery stack and an electrode tab. A bonding portion is formed at a part of a contact surface where a collector positioned at both ends in a stacking direction of a bipolar battery stack is bonded to the electrode tabs. The electrode tab and the collector are fixed by such a bonding portion. Further, the bonding portion is formed at a part of a contact surface where adjacent bipolar battery stacks are bonded to each other. Bipolar batteries positioned at upper and lower portions in the stacking direction are fixed by such a bonding portion.

Bipolar secondary battery, battery assembly formed by connecting said batteries and vehicle mounting same

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Yokohama, Japan

Osamu Shimamura