Embedded fiber optic cables for battery management

US10777855B2 · kind B2 · utility

Assignee

• Palo Alto Research Center Incorporated · US

Inventors

• Ajay Raghavan · Mountain View, US
• Peter Kiesel · Palo Alto, US
• Lars Wilko Sommer · Bretten, DE
• Bhaskar Saha · Redwood City, US
• Saroj Kumar Sahu · Tracy, US
• Alexander Lochbaum · Landau, DE
• Tobias Staudt · Palo Alto, US
• Chang-Jun Bae · Palo Alto, US
• Mohamed Alamgir · Dedham, US
• Hoe Jin Hah · Daejeon, KR
• Bokkyu Choi · Tokyo, JP
• Gyu Ok HWANG · Daejeon, KR
• Geun Chang Chung · Daejeon, KR

Key dates

• Filing date: Sep 3, 2019
• Grant date: Sep 15, 2020
• Expiry date: Sep 3, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.