Method of Embedding a Multi-Layer Lithium Ion Battery on a Flexible Printed Circuit Board

• Main Authors: Cheung, Chee Wah, Chong, Yam, Pun, Kelvin Po Leung, Hon, Wing Lung, Liu, Chenmin, Chan, Yuen Yung, Lu, Shengbo, Wong, Wai Yin, Rotanson, Jason
• Format: Patent
• Language: English
• Published: 20.04.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A flexible printed circuit board with a multi-layer all solid-state lithium ion battery printed thereon is described. A flexible printed circuit board comprises at least one electrically insulating liquid crystal polymer or polyimide layer and at least one electrically conductive metal layer. The multi-layer all solid-state lithium ion battery comprises at least one anode, at least one cathode, and at least one UV curable solid electrolyte therebetween. The battery is encapsulated between the flexible printed circuit board and a layer of laminated aluminum foil on top of the multi-layer all solid-state lithium ion battery and adhered directly to the flexible printed circuit board.