# US 12,113,225 B2 · Watertight marine battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,225 B2 - Document ID: US12113225B2 - Status: Granted - Kind: B2 - Application number: 17/383,979 - Filed: 2021-07-23 - Published: 2022-10-13 - Granted: 2024-10-08 - Earliest claimed: 2021-04-09 - Assignees: Brunswick Corporation - Applicants: Brunswick Corporation - Inventors: Steven J. Gonring - Web page: https://patentgrep.com/patent/US12113225B2 ## CPC - H01M 50/141: for protecting against humidity - B63H 21/17: by electric motor - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/42: Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells (H01M10/60 takes precedence) - H01M 10/486: {for measuring temperature} - H01M 10/52: Removing gases inside the secondary cell, e.g. by absorption (vent plugs or other mechanical arrangements for facilitating escape of gases H01M50/30) - H01M 50/202: Casings or frames around the primary casing of a single cell or a single battery - H01M 50/242: adapted for protecting batteries against vibrations, collision impact or swelling - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/308: Detachable arrangements, e.g. detachable vent plugs or plug systems - H01M 50/333: Spring-loaded vent valves - H01M 50/3425: {in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member} - H01M 50/375: Vent means sensitive to or responsive to temperature - H01M 50/394: {Gas-pervious parts or elements} - H01M 4/133: Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx - H01M 4/583: Carbonaceous material, e.g. graphite-intercalation compounds or CFx - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B63H: MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A marine battery system configured to provide energy to a marine vessel load is provided. The marine battery system includes a main enclosure body and an auxiliary enclosure body that is detachably coupled to the main enclosure body to define a sealed battery volume. The auxiliary enclosure body is configured to perform a pressure accommodation action responsive to an increase in a temperature within the sealed battery volume. The marine battery system further includes a battery disposed within the sealed battery volume. ## Claims ### Claim 1 A marine battery system configured to provide energy to a marine vessel load, comprising: a main enclosure body; an auxiliary enclosure body coupled to the main enclosure body to define a sealed battery volume, the auxiliary enclosure body configured to perform a pressure accommodation action responsive to an increase in a temperature within the sealed battery volume; a battery disposed within the sealed battery volume; a temperature sensor configured to detect temperature within the sealed battery volume and a pressure sensor configured to detect pressure within the sealed battery volume; a controller configured to: receive temperature information from the temperature sensor and pressure information from the pressure sensor; and detect an enclosure breach, wherein the enclosure breach comprises an opening in the sealed battery volume, based only on a comparison of a current pressure and a current temperature within the sealed battery volume either to an expected pressure for the sealed battery volume at the current temperature or an expected temperature for the sealed battery volume at the current pressure, accounting for the pressure accommodation action. ### Claim 2 (depends on 1) The marine battery system of claim 1, wherein the pressure accommodation action comprises expansion of a bladder to expand the sealed battery volume. ### Claim 3 (depends on 2) The marine battery system of claim 2, wherein the bladder is disposed within the main enclosure body and the auxiliary enclosure body and wherein the bladder and the main enclosure body are configured to fully encapsulate the battery. ### Claim 4 (depends on 1) The marine battery system of claim 1, wherein the pressure accommodation action comprises sliding of a piston. ### Claim 5 (depends on 4) The marine battery system of claim 4, wherein the piston is coupled to a spring configured to be compressed by the sliding of the piston to expand the sealed battery volume. ### Claim 6 (depends on 1) The marine battery system of claim 1, wherein: the main enclosure body defines a first battery volume; the auxiliary enclosure body defines a second battery volume; and the sum of the first battery volume and the second battery volume comprises a maximum sealed battery volume. ### Claim 7 (depends on 1) The marine battery system of claim 1, wherein the controller is further configured to perform an enclosure breach mitigation action in response to detection of the enclosure breach. ### Claim 8 (depends on 1) The marine battery system of claim 1, wherein the auxiliary enclosure body is detachably coupled to the main enclosure body. ### Claim 9 (depends on 1) The marine battery system of claim 1, further comprising a desiccant disposed within the sealed battery volume. ### Claim 10 (depends on 1) The marine battery system of claim 1, further comprising a vent opening formed in a sidewall of the auxiliary enclosure body, wherein the vent opening is configured to facilitate expansion and contraction of the sealed battery volume. ### Claim 11 (depends on 10) The marine battery system of claim 10, wherein the vent opening comprises a membrane configured to permit a flow of air through the vent opening and prevent a flow of fluid through the vent opening. ### Claim 12 (depends on 1) The marine battery system of claim 1, further comprising a pressure relief valve configured to open when a pressure within the sealed battery volume exceeds a pressure safety threshold. ### Claim 13 A marine battery system configured to provide energy to a marine vessel load, comprising: a battery; a main enclosure body; an auxiliary enclosure body that is detachably coupled to the main enclosure body; and wherein the battery is fully encapsulated within a sealed battery volume within the main enclosure body and the auxiliary enclosure body; wherein an increase in a temperature within the sealed battery volume causes the sealed battery volume to expand within the auxiliary enclosure body to compensate for an increase in a pressure within the sealed battery volume; a temperature sensor configured to detect temperature within the sealed battery volume and a pressure sensor configured to detect pressure within the sealed battery volume; a controller configured to: receive temperature information from the temperature sensor and pressure information from the pressure sensor; and detect an enclosure breach, wherein the enclosure breach comprises an opening in the sealed battery volume, based only on a comparison of a current pressure and a current temperature within the sealed battery volume either to an expected pressure for sealed battery volume at the current temperature or an expected temperature for the sealed battery volume at the current pressure, accounting for the pressure accommodation action. ### Claim 14 (depends on 13) The marine battery system of claim 13, further comprising: a piston movable within the auxiliary enclosure body; wherein the increase in a temperature within the sealed battery volume causes the piston to slide within the auxiliary enclosure body to expand the sealed battery volume. ### Claim 15 (depends on 13) The marine battery system of claim 13, further comprising: a bladder disposed within the main enclosure body and the auxiliary enclosure body; wherein the increase in a temperature within the sealed battery volume causes the bladder to expand within the auxiliary enclosure body to expand the sealed battery volume. ### Claim 16 (depends on 12) The marine battery system of claim 12, wherein the controller is further configured to detect the enclosure breach upon determining that an increase in the temperature information has not resulted in a corresponding increase in the pressure information.