Toyota Jidosha Kabushiki Kaisha

Matsushita Electric Industrial Co., Ltd.

Panasonic Ev Energy Co., Ltd.

Primearth Ev Energy Co., Ltd.

Other

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Sonitus Technologies, Inc.

Shinichiro Ito

Hiroyuki Sakamoto

Hajime Seri

Shinichi Yuasa

Nobuyasu Morishita

Yasushi Nakagiri

Daisuke Koba

Kojiro Ito

Tamotsu Fukuma

Masahiko Mitsui

Hiroshi Yajima

Takanobu Yamada

Takashi Inoue

Shinji Hamada

Munehisa Ikoma

Junta Izumi

Mitsuo Makimoto

Toyohiko Eto

Noboru Takagi

Morikazu Sagawa

Tadao Kimura

Kazuhiro Eguchi

Hisashi Ono

Yasuhiro Takahashi

Yusai Murakami

Katsumi Kashiwagi

Hiromitsu Taki

Kuniaki Kiyosue

Toshiharu Noguchi

Yuki Nishida

Seiji Bito

Hiroyuki Satou

Takehiko Yoneda

Kazuya Kodama

Michael Pare

Atsushi Adachi

Katsuya Hagiwara

Hideki Kasahara

Yasufumi Tanaka

Yuki Sakito

Kouichi Ichikawa

Bob Fowler

Tetsushi Kajikawa

Chris Pontiga

Noriyuki Tsuge

Eiichi Ochiai

Hiroshi Matsuno

Akiro Yoshida

Hideki Ando

A lithium-ion secondary battery includes an inorganic filler having a mean particle size of 1 μm to 10 μm. A ratio A/B is 14 to 28, where A is a weight ratio of a second binder and the inorganic filler (i.e., second binder/inorganic filler) in an insulating layer, and B is a weight ratio of a first binder and positive electrode active material particles (i.e., first binder/positive electrode active material particles) in a positive electrode active material layer.

Non-aqueous electrolyte secondary battery

A lithium-ion secondary battery includes an inorganic filler having a mean particle size of 1 &#x3bc;m to 10 &#x3bc;m. A ratio A/B is 14 to 28, where A is a weight ratio of a second binder and the inorganic filler (i.e., second binder/inorganic filler) in an insulating layer, and B is a weight ratio of a first binder and positive electrode active material particles (i.e., first binder/positive electrode active material particles) in a positive electrode active material layer.

A method for determining a state of a rechargeable battery includes obtaining a complex impedance measured by applying AC voltage or AC current to a rechargeable battery that is subject to determination and determining a state of the rechargeable battery based on the obtained complex impedance. The determining a state of the rechargeable battery includes determining whether or not a first capacity shift is occurring based on a comparison of a value of the complex impedance at a predetermined frequency with a first determination value used to determine a negative electrode capacity shift, and when determined that the first capacity shift is not occurring, determining whether or not a second capacity shift is occurring based on a comparison of a gradient of the complex impedance with respect to a real axis in a diffusion resistance region with a second determination value used to determine a positive electrode capacity shift.

Method and device for determining state of rechargeable battery

A battery-embedded device includes a substrate having a wiring, a coil fixed to the substrate, a battery fixed to the substrate, and a first temperature detecting element that is disposed on the substrate and configured to detect a temperature of the battery. An occupancy rate of the wiring in a first region of the substrate which is immediately below the first temperature detecting element is lower than an occupancy rate of the wiring in a second region of the substrate other than the first region.

Battery-embedded device

A method for reusing a vehicle rechargeable battery to rebuild an assembled battery from a plurality of battery units having a usage history is provided. The method includes measuring a remaining charge of each of a plurality of battery units obtained by dismantling an assembled battery having a usage history. The method further includes selecting from the battery units a battery unit in which the measured remaining charge is greater than or equal to a remaining charge lower limit value, which is set in a range that is greater than zero and less than a lower limit value of a remaining charge control range of a vehicle in which the assembled battery was installed, and assembling a new assembled battery using the selected battery unit.

Method for reusing vehicle rechargeable battery

A method for regenerating a nickel metal hydride battery is provided. The nickel metal hydride battery includes a hydrogen absorbing alloy that serves as a negative electrode material and a safety valve that opens when an internal pressure of a battery case is greater than or equal to a predetermined pressure. The method includes connecting a plurality of nickel metal hydride batteries in parallel. Each nickel metal hydride battery is formed by integrating one or more battery cells. The method further includes overcharging the nickel metal hydride batteries by supplying current from a charge unit that is connected in parallel to the nickel metal hydride batteries. The method further includes, when each nickel metal hydride battery is overcharged, restoring a discharge reserve of a negative electrode by releasing at least some of an oxygen gas generated at a positive electrode out of the battery case through the safety valve.

Method and device for regenerating nickel metal hydride battery

A communication device includes: a board having a first surface, a second surface opposite to the first surface, and a third surface different from both the first surface and the second surface; a first magnetic sheet disposed on a side of the first surface; a first coil disposed on the first magnetic sheet; a second magnetic sheet disposed on a side of the second surface; a second coil disposed on the second magnetic sheet; and a third coil disposed on the third surface. A part of the first magnetic sheet overlaps at least a part of the third coil in plan view.

Communication device

A variable displacement oil pump includes: a variable displacement mechanism that is able to change a discharge amount per rotation of an input shaft. The variable displacement mechanism includes a pump housing, an oil pressure chamber provided in the pump housing, and a capacity adjustment member displaced by oil pressure from the oil pressure chamber. The capacity adjustment member is configured to be operated when receiving control oil pressure that is supplied from a control valve to the oil pressure chamber. The pump housing has an oil release hole that is opened to face the oil pressure chamber and that penetrates a wall section of the pump housing to partially release oil.

Variable displacement oil pump

A nickel-hydrogen storage battery includes a positive electrode, a negative electrode using an ABbased hydrogen-absorbing alloy, and a separator arranged between the positive and negative electrodes. The ABbased hydrogen-absorbing alloy includes an A element, which is a constituent element of a misch metal, and a B element, which includes nickel and cobalt. The ratio of the amount of substance of the B element to that of the A element is 5.2 or more and 5.4 or less. The ratio of the amount of substance of cobalt to that of the A element is 0.15 or more and 0.4 or less. The liquid retention volume (V) and the true volume (V) of the separator, the theoretical capacity of the negative electrode (C), and the theoretical capacity of the positive electrode (C) satisfy the following expression.2.0&#x2266;1/2&#xd7;1/2&#x2266;3.1

Nickel-hydrogen storage battery

A nickel-metal hydride secondary battery includes: a plurality of power generating elements each having a negative plate containing hydrogen absorbing alloy; a battery case provided with partition walls and a plurality of compartments arranged adjacently on both sides of each partition wall, each of the compartments accommodating each power generating element, and the compartments allowing gas intercommunication between compartments through communication holes formed in the partition walls; and at least one of safety valves placed on the battery case, the safety valves being less in number than the number of the compartments; wherein each of the communication holes has a hole sectional area per battery module capacity in a range 0.03 to 0.30 mm/Ah.

Nickel-metal hydride secondary battery module and secondary battery module manufacturing method

A washing apparatus that easily washes off metal impurities from a porous metal substrate used as an electrode plate core for an alkaline battery. The washing apparatus includes a liquid bath container which holds a solution for washing off the metal impurities. A guide guides movement of the porous metal substrate in the solution held in the liquid bath container. The porous metal substrate is wound into a hoop in a coil-shaped manner, and the guide guides the movement of a sheet portion of the porous metal substrate unwound from the hoop. A winding mechanism winds the sheet portion after being fed through the liquid bath container.

Apparatus and method for washing electrode plate core for alkaline battery

A nickel-metal hydride battery that reduces the amount of cobalt and improves battery durability. The battery includes a negative electrode formed from an ABhydrogen-absorbing alloy. The alloy includes an A element composed of Misch metal and a B element mainly composed of nickel. The nickel in the B element is partially replaced by at least one further element including cobalt. The alloy is formed to satisfy at least the conditions of a mol ratio of the B element relative to the A element being 5.25 or greater, the amount of cobalt for 1 mol of the A element being 0.15 mol to 0.25 mol, and the alloy having a half-width ratio, which indicates the ratio of a peak half-width of a (002) plane relative to a peak half-width of a (200) plane, of 1.3 to 1.7.

Nickel-metal hydride battery

A method of manufacturing a hydrogen-absorption alloy electrode which comprises particles of a hydrogen-absorption alloy that comprises a rare earth element, Ni, Co and Al. The method comprises subjecting the hydrogen-absorption alloy particles to an alkaline treatment in a 10 to 50 weight % NaOH solution at 60 to 140&#xb0; C. for 0.5 to 5 hours such that on the surface of the particles (amount of Al on surface/amount of Al in alloy)&#x3c;(amount of Co on surface/amount of Co in alloy).

Hydrogen-absorption alloy electrode

A hydrogen absorbing alloy powder includes an intermetallic compound having an ABtype crystal structure and containing La for an A site element and Ni for a B site element. The powder contains La by 20 wt % or more and metallic Ni by from 2.0 wt % to 10 wt %, and acicular or grain shape precipitates containing La(OH)are deposited on a surface thereof. The powder has an intensity ratio P/Psatisfying a relation: P/P&#x2267;0.02, where Pis a peak intensity appearing in the vicinity of: diffraction angle 2&#x3b8;=42.5 deg and showing (111) face of LaNiand Pis a peak intensity appearing in the vicinity of: diffraction angle 2&#x3b8;=15.8 deg and showing (100) face of La(OH)in the X-ray diffractometry using CuK&#x3b1; rays.

Hydrogen absorbing alloy powder and nickel-metal hydride battery using the same

The present invention provides a battery prevented from causing a short circuit between a positive and negative electrode plates and a method of manufacturing the battery. This battery comprises an electrode plate assembly having a plurality of positive electrode plates and a plurality of negative electrode plates which are alternately laminated with separators interposed one by one between them. Each of the positive electrode plates and the negative electrode plates is configured to be curved to the same side in a lamination direction.

Battery and method of manufacturing the same

Growing community of inventors

Kosai, Japan

Shinichiro Ito