# US 12,763,385 B2 · System and method for operating a rechargeable electrochemical cell or battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,385 B2 - Document ID: US12763385B2 - Status: Granted - Kind: B2 - Application number: 18/431,188 - Filed: 2024-02-02 - Published: 2024-08-08 - Granted: 2026-10-13 - Earliest claimed: 2019-10-31 - Assignees: Sion Power Corporation - Applicants: Sion Power Corporation - Inventors: Yuriy V. Mikhaylik; Glenn Alan Hamblin; Chariclea Scordilis-Kelley - Web page: https://patentgrep.com/patent/US12763385B2 ## CPC - H01M 10/441: {for several batteries or cells simultaneously or sequentially} - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H02J 7/56: Active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters - H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing} - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract An electrochemical cell management system comprising an electrochemical cell and at least one controller configured to control the cell such that, for at least a portion of a charge cycle, the cell is charged at a charging rate or current that is lower than a discharging rate or current of at least a portion of a previous discharge cycle. An electrochemical cell management method. An electrochemical cell management system comprising an electrochemical cell and at least one controller configured to induce a discharge of the cell before and/or after a charging step of the cell. An electrochemical cell management method. An electrochemical cell management system comprising an electrochemical cell and at least one controller configured to: monitor at least one characteristic of the cell and, based on the at least one characteristic of the cell, induce a discharge and/or control a charging rate or current of the cell. ## Claims ### Claim 1 An electrochemical cell management system comprising: a first electrochemical cell comprising a metallic anode; a second electrochemical cell; and at least one controller configured to control the first electrochemical cell to induce a discharge of the first electrochemical cell individually at a first rate or current, through at least a threshold capacity of the first electrochemical cell, before a beginning of a charging step during which the at least one controller is configured to charge the first electrochemical cell and the second electrochemical cell in parallel at a second rate or current that is slower than the first rate or current. ### Claim 2 (depends on 1) The electrochemical cell management system of claim 1, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge of the first electrochemical cell at the first rate or current, through at least 5% of a discharge capacity of the first electrochemical cell, before the beginning of the charging of the first electrochemical cell and the second electrochemical cell in parallel at the second rate or current. ### Claim 3 (depends on 2) The electrochemical cell management system of claim 2, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge of the first electrochemical cell at the first rate or current, through at least 5% of a discharge capacity of the first electrochemical cell, before and less than 10 minutes before the beginning of the charging of the first electrochemical cell and the second electrochemical cell in parallel at the second rate or current. ### Claim 4 (depends on 1) The electrochemical cell management system of claim 1, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge of the first electrochemical cell at the first rate or current, through at least 10% of a discharge capacity of the first electrochemical cell, before the beginning of the charging of the first electrochemical cell and the second electrochemical cell in parallel at the second rate or current. ### Claim 5 (depends on 4) The electrochemical cell management system of claim 4, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge of the first electrochemical cell at the first rate or current, through at least 10% of a discharge capacity of the first electrochemical cell, before and less than 10 minutes before the beginning of the charging of the first electrochemical cell and the second electrochemical cell in parallel at the second rate or current. ### Claim 6 (depends on 1) The electrochemical cell management system of claim 1, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge of the first electrochemical cell at the first rate or current, through at least 15% of a discharge capacity of the first electrochemical cell, before the beginning of the charging of the first electrochemical cell and the second electrochemical cell in parallel at the second rate or current. ### Claim 7 (depends on 6) The electrochemical cell management system of claim 6, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge of the first electrochemical cell at the first rate or current, through at least 15% of a discharge capacity of the first electrochemical cell, before and less than 10 minutes before the beginning of the charging of the first electrochemical cell and the second electrochemical cell in parallel at the second rate or current. ### Claim 8 (depends on 2) The electrochemical cell management system of claim 2, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge at a rate that is higher than an average discharging rate of a previous discharge cycle. ### Claim 9 (depends on 8) The electrochemical cell management system of claim 8, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge at a rate that is higher than an average discharging rate of a latest previous discharge cycle. ### Claim 10 (depends on 2) The electrochemical cell management system of claim 2, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge at a current that is higher than an average discharging current of a previous discharge cycle. ### Claim 11 (depends on 10) The electrochemical cell management system of claim 10, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge at a current that is higher than an average discharging current of a latest previous discharge cycle. ### Claim 12 (depends on 2) The electrochemical cell management system of claim 2, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge at a rate that is higher than an average charging rate of a previous charge cycle. ### Claim 13 (depends on 12) The electrochemical cell management system of claim 12, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge at a rate that is higher than an average charging rate of a latest previous charge cycle. ### Claim 14 (depends on 2) The electrochemical cell management system of claim 2, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge at a current that is higher than an average charging current of a previous charge cycle. ### Claim 15 (depends on 14) The electrochemical cell management system of claim 14, wherein the at least one controller is configured to control the first electrochemical cell to induce the discharge at a current that is higher than an average charging current of a latest previous charge cycle.