The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2026
Filed:
Aug. 16, 2023
Subaru Corporation, Tokyo, JP;
Jun Kikuchi, Tokyo, JP;
SUBARU CORPORATION, Tokyo, JP;
Abstract
A battery diagnosis apparatus is configured to perform a diagnosis process that determines whether a battery mounted on an electric vehicle is a normal product. The battery diagnosis apparatus includes a battery control unit. The battery control unit is configured to diagnose that the battery is not the normal product when one of the following conditions is satisfied: a voltage of the battery decreases to a lower limit voltage before a predetermined time elapses from a start of discharging of a current having a predetermined current value from the battery; and an output value from the battery during a period from the start of the discharging until the elapse of the predetermined time is equal to or less than a predetermined ratio of an output value to be outputted from a genuine, new battery during the period from the start of the discharging until the elapse of the predetermined time.