Gs Yuasa International Ltd.

Honda Motor Co., Ltd.

Shinsuke Yoshitake

Masakazu Tsutsumi

Jun Nakamura

Takeshi Sasaki

Katsuhiko Okamoto

Tomonori Kishimoto

Satoshi Murakami

Nobuyuki Naganawa

Motoki Hoshino

Hajime Kawamoto

Masamitsu Tononishi

Akihiko Miyazaki

Yoshinori Tanaka

Yasunori Okuno

Yuta Yamamoto

Masao Kawata

Toshiyuki Nukuda

Kazuhide Tozuka

Hiroaki Kakimura

Takuma Tonari

Kosuke Oguri

Masahiko Natsuume

Yoshiyuki Honda

Kenji Kouno

Masakazu Tstsumi

An electric storage device includes: an electrode assembly including a positive electrode plate and a negative electrode plate that are insulated from each other; a pair of current collectors each of which includes a connecting portion and is connected to a corresponding one of the positive electrode plate and the negative electrode plate at the connecting portion; a case that houses the electrode assembly and the pair of current collectors, the electrode assembly being supported by the pair of current collectors in the case; and a distance retaining member that retains a distance between portions more distal than the respective connecting portions of the pair of current collectors.

Electric storage device and spacer

An electric storage device includes an electrode assembly, a case that includes a defining wall and houses the electrode assembly, a sealing member that is arranged on the defining wall, and a conductive member that is electrically connected to the electrode assembly, the conductive member being supported by the sealing member. At least a portion of the defining wall where the sealing member is arranged includes an aluminum-based metallic material. The sealing member includes a material that is softer than the material for the at least a portion of the defining wall where the sealing member is arranged. The sealing member includes polyphenylene sulfide (PPS) resin and an elastomer. The elastomer is contained in an amount of 2% to 20% by weight. The conductive member is crimped in such a manner that the sealing member is pressed against the defining wall.

Electric storage device

According to an embodiment, an electric storage apparatus includes an electric storage device, an abutment arranged in alignment with the electric storage device, wherein the abutment includes at least three members stacked together, each of the members has a positioning part having a first surface forming a recess and a back surface of the first surface forming a projection, the positioning parts of the members are arranged at positions corresponding to one another, and adjacent members are relatively positioned by inserting a positioning part of one of the adjacent members into a positioning part of the other of the adjacent members.

Electric storage apparatus, and method for producing electric storage apparatus

A manufacturing method of an electric storage device includes: a current collector assembly step of disposing a current collector between an electrolyte solution pouring opening and a power generating element so as to block a view of the power generating element from the electrolyte solution pouring opening; an electrolyte solution pouring step of pouring an electrolyte solution through the electrolyte solution pouring opening; and a sealing step of disposing a sealing member at the electrolyte solution pouring opening and sealing the electrolyte solution pouring opening by welding.

Manufacturing method of electric storage device and electric storage device

A metal foil extending outward from electrode plates stacked in a layered manner is sandwiched between a first metal member provided with damping portions and a second metal member, and ultrasonic vibration is caused to act upon a plurality of sites of action from the first metal member side to join the metal foil to the first and second metal members. Each damping portion includes at least one of a cutaway portion formed by cutting away part of the first metal member, a thick-walled portion formed by partially increasing the plate thickness of the first metal member, and a convex ridge portion formed by bending part of the first metal member into a convex ridge shape.

Manufacturing method of electric storage apparatus, auxiliary plate for ultrasonic welding, and electric storage apparatus

At least a connector of a current collecting member that is welded to an electrode plate of an electrode assembly is constituted by a rolled material, and the current collecting member and the electrode assembly are bonded to each other by vibration welding.

Electric storage device and method for producing electric storage device

There is provided a battery assembly wherein assembly can be facilitated by reducing the number of components to be assembled, by integrally fixing resin plates () on the inside of metal plates () of end plates (). A laminated battery body () is constituted by adjacently arranging battery holders () made of resin forming cooling passages () between a plurality of batteries () and holding such batteries () on both sides between other batteries (). The metal plates () and resin plates () that are integrally fixed on the inside of these metal plates are provided on the outside of the batteries () at both ends of the laminated battery body (). Thus, the batteries () are held by the resin plates (), and the end plates () are respectively arranged to form the cooling passages () between these batteries () and the metal plates (). The laminated battery body () is fixed in a clamped manner by fixing means clamping these end plates ().

Battery assembly

An electric storage device includes an electrode assembly, a case housing the electrode assembly, a plastic member arranged at an outer surface of the case and including a joining surface facing the outer surface of the case, an external terminal supported by the plastic member and electrically connected to the electrode assembly, a sealing member arranged at the outer surface of the case, the sealing member including a joining surface facing the outer surface of the case, and an auxiliary terminal supported by the sealing member, the auxiliary terminal extending from inside to outside the case, being electrically connected to the electrode assembly, and being electrically connected to the external terminal. The plastic member includes a material having a hardness greater than a hardness of the sealing member.

According to an embodiment, an electric storage apparatus includes an electric storage device; an insulating member arranged in alignment with the electric storage device; and a sandwiching member made of metal configured to sandwich the insulating member with the electric storage device, wherein one of the insulating member and the sandwiching member includes a recess having an opening on a first surface and having a recess-side large-diameter portion, on the bottom side, with an inner circumference larger than the opening, and the other of the insulating member and the sandwiching member includes a projection-side large-diameter portion, on the distal end side, with an outer circumference larger than the opening, the projection-side large-diameter portion being arranged inside the recess-side large-diameter portion.

Provided are an electric storage device in which a current collector is not easily broken even when vibration is applied, and a vehicle having this electric storage device. This electric storage device includes a case having a first inner surface and a second inner surface adjacent to the first inner surface, an electrode assembly housed in the case and including a positive electrode plate and a negative electrode plate insulated from each other, an electrode terminal disposed outside the case, and a current collector housed in the case and electrically connecting the electrode assembly and the electrode terminal to each other. A distal end edge of a distal end portion of the current collector is supported on the first inner surface of the case.

Electric storage device having current collector and vehicle having the electric storage device

A metal foil extending outward from an electrode plate is sandwiched between a first metal member and a second metal member, and ultrasonic vibration is caused to act upon a plurality of sites of action from the first metal member side to join the metal foil to the first metal member and the second metal member. The first metal member has a Vickers hardness of at least 40 Hv and not more than 75 Hv.

Manufacturing method of electric storage apparatus and electric storage apparatus

An electric storage device, including: an electrode assembly having at least one protrusion portion, the protrusion portion being formed of an end portion of any one of a positive electrode foil and a negative electrode foil and protruding in a laminated state from a side end of the other electrode foil of the both electrode foils; a current collector having a contact portion in contact with the protrusion portion; and a metal material that joins the protrusion portion by interposing the protrusion portion between the contact portion of the current collector and the metal material, wherein at least an end region in one direction along the opposing face is displaced in a direction away from the contact portion of the current collector than a central region of the opposing face is.

An electric storage device includes a case, an electrode assembly housed in the case and including a positive electrode plate and a negative electrode plate which are wound together while being isolated from each other, an external terminal arranged outside the case and a current collecting member arranged inside the case to electrically connect the electrode assembly with the external terminal. The current collecting member includes a first portion including a first end portion and a second end portion, and electrically connected to the external terminal, and a second portion extending out of the second end portion of the first portion and electrically connected to the electrode assembly. The second portion includes a base portion including a first end portion and a second end portion, the first end portion of the base portion being connected to the second end portion of the first portion, and a twisted portion.

Electric storage device provided with current collecting member, and method for manufacturing current collecting member

In order to accurately protect current collectors included in an electric storage device, the electric storage device includes an electric storage elementarranged inside an electric storage device case BC; an electrode terminalarranged outside the electric storage device case; a current collectorincluding a first posture part FP and a second posture part SP, the first posture part FP extending along a surface of the electric storage device case on which the electrode terminalis arranged, the second posture part SP extending from an end portion of the first posture part toward the side opposite to the electrode terminal, the current collector fixed at the first posture part FP by means of a fixing memberpenetrating through an opening formed in the electric storage device case, the current collector supporting the electric storage elementby the second posture part SP, thereby electrically connecting the electrode terminaland the electric storage element; and a reinforcing memberarranged on the side of the first posture part FP where the electric storage elementis present, so as to extend longer toward the second posture part side than the fixing member, and sandwiched and fixed between the first posture part FP and the fixing member

Provided is a battery assembly that is lightweight while ensuring sufficient bonding strength that is required between frames, as well as a method of manufacturing the same. The battery assembly includes a plurality of cell units that are integrated together, each of the plurality of cell units including: a cell having a metal case; and a plastic frame that is integrally formed with an outer surface of the case, wherein the cell units are integrated together by having the frames of adjacent ones of the cell units joined together through surfaces thereof.

Growing community of inventors

Kyoto, Japan

Shinsuke Yoshitake