Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Jidoshokki

Ayumu Kamakura

Masato Kamiya

Shinji Suzuki

Taira Saito

Yuya Ishihara

Junpei Terashima

Jumpei Terashima

A battery pack spacer is divided into a first region and a second region, the first region includes an end portion in a first direction and occupies half of an entire region of the spacer in a second direction from the end portion in the first direction, the second region includes an end portion in the second direction and occupies half of the entire region of the spacer in the first direction from the end portion in the second direction, and the second region has higher compressibility in the single cell arrangement direction than the first region.

Battery pack spacer

A flat electrode body of a battery has a first-side curved end positioned on a first side of an electrode body width direction and a second-side curved end positioned on a second side. A positive electrode innermost curved portion of a positive electrode sheet is disposed inside the first-side curved end. When the dimension from a positive electrode connecting portion to the end on the first side of the electrode body is defined as a distance and the dimension from the positive electrode connecting portion to the end on the second side of the electrode body is defined as a distance, the positive electrode connecting portion being in the positive electrode protrusion wound portion and connected to a terminal connecting portion of a positive terminal member, the terminal connecting portion is connected to the positive electrode connecting portion at a position satisfying the condition Ha&#x2265;1.1Hb.

Battery

Growing community of inventors

Toyota, Japan

Ayumu Kamakura