Batteriezustandsdiagnoseverfahren, Batteriediagnosevorrichtung und Batteriediagnosesystem

Details

Veröffentlichungs-Nr.

EP4722746

Anmeldetag

27. Februar 2024

Veröffentlichung

5. Dezember 2024

Rechtsraum

EP

Abstract

A battery state diagnosis method and a battery state diagnosis device are provided, which achieve a highly accurate battery capacity deterioration diagnosis when a diagnosis target is a battery system, such as a battery system using a LiFePO<4>-based active material for the positive electrode, that exhibits little voltage change in response to a change in the state-of-charge. A battery state diagnosis method is for diagnosing a deterioration state of a secondary battery mounted on equipment, and includes: a data acquisition step of acquiring pieces of data about a voltage, a current, and a temperature of the secondary battery from the equipment in operation; a table creation step of creating, based on the acquired pieces of data, a table including a state of health capacity and a state of health resistance of the secondary battery; and a diagnosis step of diagnosing, using the created table, a deterioration state of the secondary battery.

Anmelder

Firma

HITACHI HIGH-TECH CORPORATION

Land

🇯🇵 Japan