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:
Jan. 20, 2026
Filed:
Apr. 14, 2021
Nissan Motor Co., Ltd., Yokohama, JP;
Hiromoto Taguchi, Kanagawa, JP;
Ayuka Matsuyama, Kanagawa, JP;
Kohei Kasedo, Kanagawa, JP;
Qiye Yang, Kanagawa, JP;
Xubin Zhou, Kanagawa, JP;
Tomokazu Kobayashi, Kanagawa, JP;
Ko Miyake, Kanagawa, JP;
Hiroshi Ogawa, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A battery pack includes cells, a pressure contributing component contributing to a change in pressure in the battery pack, at least one pressure sensor configured to detect the pressure in the battery pack, and at least one voltage sensor configured to detect a voltage of the cells. A thermal chain determination method includes detecting the pressure in the battery pack, detecting the voltage of the cells, determining that the pressure in the battery pack is abnormal when an amount or rate of change is larger than a predetermined value, determining that the voltage of the cells is abnormal when an amount or rate of change in the detected voltage is larger than a predetermined value, or when an absolute value of the voltage of the cells is smaller than a predetermined value, and determining that a thermal chain occurs when both the pressure and the voltage are abnormal.