Gs Yuasa International Ltd.

Honda Motor Co., Ltd.

Hajime Kawamoto

Masakazu Tsutsumi

Jun Nakamura

Shinsuke Yoshitake

Masamitsu Tononishi

Toshiyuki Nukuda

Tomonori Kishimoto

Katsuhiko Okamoto

Nobuyuki Naganawa

Takuma Tonari

Yasunori Okuno

Kenji Kouno

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

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

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 an electric storage device that can ensure seal in a peripheral area of a portion in a defining wall of a case through which a rivet passes even when a rivet is inserted through the defining wall of the case and the rivet is caulked. The electric storage device includes: an electrode assembly; a case that houses the electrode assembly, the case including a defining wall; and a rivet, wherein a peripheral area of a portion in the defining wall through which the rivet passes has a higher hardness than the remaining area.

Growing community of inventors

Osaka, Japan

Hajime Kawamoto