Primearth Ev Energy Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Kazuki Nakano

Junichi Matsumoto

Hiroyuki Sakamoto

Daisuke Koba

Yosuke Murota

Suguru Muraki

Kenichi Maehara

Jun Satoh

Takayuki Irie

A battery system includes a nickel-metal hydride battery and an ECU that controls charging and discharging of the nickel-metal hydride battery. The ECU calculates a discharge electricity amount showing an integrated value of a current discharged from the nickel-metal hydride battery, and further calculates ΔSOC of the nickel-metal hydride battery in a prescribed time period. The ECU calculates a charge reserve capacity of the nickel-metal hydride battery based on a temperature of the nickel-metal hydride battery, the discharge electricity amount, and the ΔSOC.

Battery system and method of controlling battery system

A method for manufacturing an alkaline battery includes assembling an alkaline battery with a positive electrode, a negative electrode, a separator, and an electrolyte. The positive electrode includes cobalt and a positive electrode active material particle, which has a main component that is nickel hydroxide. The positive electrode active material particle has a coating layer that includes cobalt oxyhydroxide. At least one of the positive electrode, the negative electrode, and the electrolyte includes a tungsten element. The method further includes charging the assembled alkaline battery so that the cobalt in the positive electrode is deposited as cobalt oxyhydroxide on a surface of the positive electrode active material particle.

Alkaline battery and method for manufacturing alkaline battery

Growing community of inventors

Toyohashi, Japan

Kazuki Nakano