# US 12,015,175 B2 · Battery system with flexible printed circuit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,175 B2 - Document ID: US12015175B2 - Status: Granted - Kind: B2 - Application number: 18/322,388 - Filed: 2023-05-23 - Published: 2023-09-21 - Granted: 2024-06-18 - Earliest claimed: 2020-01-09 - Assignees: Samsung SDI Co., Ltd. - Applicants: Samsung SDI Co., Ltd. - Inventors: Michael Erhart - Web page: https://patentgrep.com/patent/US12015175B2 ## CPC - H01M 50/519: comprising printed circuit boards [PCB] - H05K 1/189: characterised by the use of flexible or folded printed circuits - H01M 10/4257: {Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries} - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H01M 50/284: with incorporated circuit boards, e.g. printed circuit boards [PCB] - H01M 50/516: by welding, soldering or brazing - H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection - H05K 3/328: by welding - H05K 3/361: {Assembling flexible printed circuits with other printed circuits} - H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing} - H05K 1/118: {specially for flexible printed circuits, e.g. using folded portions} - H05K 1/147: {at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence)} - H05K 2201/0394: Conductor crossing over a hole in the substrate or a gap between two separate substrate parts - H05K 2201/10037: Printed or non-printed battery - H05K 2203/107: Using laser light - H05K 2203/1545: Continuous processing, i.e. involving rolls moving a band-like or solid carrier along a continuous production path - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A method for connecting a flexible printed circuit (FPC) to a battery module and a cell supervision circuit board (CSCB) is provided. The method includes: providing a coil of a continuous, strip-shaped FPC; unwinding a first section of the FPC from the coil, positioning the first section of the FPC over a first contact portion of the battery module, and welding a conductive structure of the FPC in the first section to the first contact portion of the battery module; unwinding a second section of the FPC from the coil, positioning the second section of the FPC over a contact pad of the CSCB, and welding the conductive structure of the FPC in the second section to the contact pad of the CSCB; and separating the first section and second section of the FPC from the coil of the FPC. ## Claims ### Claim 1 A method for connecting a flexible printed circuit (FPC) to a battery module and a cell supervision circuit board (CSCB), the method comprising: providing a coil of a continuous, strip-shaped FPC; unwinding a first section of the FPC from the coil, positioning the first section of the FPC over a first contact portion of the battery module, and welding a conductive structure of the FPC in the first section to the first contact portion of the battery module; unwinding a second section of the FPC from the coil, positioning the second section of the FPC over a contact pad of the CSCB, and welding the conductive structure of the FPC in the second section to the contact pad of the CSCB; and separating the first section and second section of the FPC from the coil of the FPC. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first contact portion of the battery module is a battery cell terminal, a battery cell case, or a busbar. ### Claim 3 (depends on 1) The method according to claim 1, wherein the FPC is connected to a second contact portion of the battery module, and wherein the first contact portion is a negative terminal of a battery cell, and the second contact portion is positive terminal of another battery cell. ### Claim 4 (depends on 3) The method according to claim 3, wherein the first contact portion and the second contact portion are connected to the conductive structure of the FPC. ### Claim 5 (depends on 3) The method according to claim 3, wherein the FPC comprises a first conductive structure and a second conductive structure, and wherein the first contact portion is connected to the first conductive structure, and the second contact portion is connected to the second conductive structure. ### Claim 6 (depends on 5) The method according to claim 5, wherein the first conductive structure is connected to a first CSCB contact pad, and the second conductive structure is connected to a second CSCB contact pad. ### Claim 7 (depends on 1) The method according to claim 1, wherein a cell supervision circuit (CSC) is disposed on the CSCB and is connected to the contact pad of the CSCB. ### Claim 8 (depends on 1) A battery system comprising a plurality of the battery modules and a plurality of the CSCBs, wherein the first contact portion of each of the battery modules is connected to the contact pad of one of the CSCBs via one of the FPCs by using the method according to claim 1. ### Claim 9 (depends on 8) The battery system according to claim 8, wherein a first one of the FPCs is connected to a first one of the battery modules and a contact pad of a first one of the CSCBs, and a second one of the FPCs is connected to a second one of the battery modules and a contact pad of a second one of the CSCBs. ### Claim 10 (depends on 8) The battery system according to claim 8, wherein one of the FPCs is connected to a plurality of the battery modules and a contact pad of one of the CSCBs, and wherein the one of the FPCs has a curved section. ### Claim 11 (depends on 1, 8) The battery system according to claim 8, wherein the plurality of the CSCBs comprises a first CSCB comprising a first communication pad and a second CSCB comprising a second communication pad, and wherein the first and second communication pads are interconnected via an FPC connector by using the method according to claim 1.