# US 10,373,788 B2 · Battery disconnect device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,373,788 B2 - Document ID: US10373788B2 - Status: Granted - Kind: B2 - Application number: 15/639,710 - Filed: 2017-06-30 - Published: 2018-01-04 - Granted: 2019-08-06 - Earliest claimed: 2016-06-30 - Assignees: Joyson Safety Systems Acquisition LLC - Applicants: Joyson Safety Systems Acquisition LLC - Inventors: Jeremy Henck - Web page: https://patentgrep.com/patent/US10373788B2 ## CPC - H01H 39/006: {Opening by severing a conductor} - H01H 9/16: Indicators for switching condition, e.g. "on" or "off" - H01M 6/5044: {Cells or batteries structurally combined with cell condition indicating means} - H01M 50/505: comprising a single busbar - H01M 50/574: Devices or arrangements for the interruption of current - H01H 2039/008: {using the switch for a battery cutoff} - H01H 2219/028: Printed information - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Various implementations include a battery disconnect device that includes a breaker, a housing, and a bus bar. The breaker has a pivot portion and an actuation portion, and the actuation portion has an actuation face. The pivot portion has an axis of rotation about which the breaker is pivotable. The housing defines a chamber, and the chamber is in fluid communication with a gas generator via an inlet defined by an inlet wall of the housing. The breaker is disposed within the chamber in a first position in which the actuation face is adjacent the inlet and inlet wall and combustion gas from the gas generator pushes on the actuation face to cause the breaker to pivot about the axis of rotation of the pivot portion to a second position, which causes the breaker to break the bus bar. ## Claims ### Claim 1 A battery disconnect device comprising: a breaker having a pivot portion and an actuation portion, the actuation portion having an actuation face, the pivot portion having an axis of rotation about which the breaker is pivotable; a housing defining a chamber, the chamber being in fluid communication with a gas generator via an inlet defined by an inlet wall of the housing; and a bus bar extending through the housing and the chamber, wherein the breaker is disposed within the chamber in a first position in which the actuation face is adjacent the inlet and inlet wall and combustion gas from the gas generator pushes on the actuation face to cause the breaker to pivot about the axis of rotation of the pivot portion to a second position, wherein in the second position, the actuation face is spaced apart from the inlet and inlet wall, and the pivoting movement of the pivot portion causes the breaker to break the bus bar, and wherein the bus bar extends through a groove defined in the pivot portion of the breaker, and the pivoting movement of the pivot portion causes the pivot portion to break the bus bar at a first recessed portion and a second recessed portion. ### Claim 2 (depends on 1) The battery disconnect device of claim 1, wherein the groove has first and second walls that are spaced apart from each other, and an edge of the first wall and a cylindrical wall of the pivot portion define a first axial groove, and an edge of the second wall and the cylindrical wall define a second axial groove, wherein the first axial groove and the second axial groove are circumferentially spaced apart from each other. ### Claim 3 (depends on 1) The battery disconnect device of claim 1, wherein the groove has a floor, and one edge of the bus bar is disposed adjacent the groove floor. ### Claim 4 (depends on 1) The battery disconnect device of claim 1, wherein the pivot portion has a first axial face and a second axial face, and the housing defines a first recess on a first wall and a second recess on a second wall, the first wall and the second wall being spaced apart from each other, and wherein at least a portion of the first axial face is engaged in the first recess and at least a portion of the second axial face is engaged in the second recess. ### Claim 5 (depends on 4) The battery disconnect device of claim 4, wherein at least one of the first recess or the second recess is an opening in the respective first or second wall of the housing, and the respective first or second axial face is visible through the opening from outside the housing. ### Claim 6 (depends on 5) The battery disconnect device of claim 5, wherein the visible first or second axial face comprises an indicator thereon, the indicator indicating whether the breaker is in the first position or the second position. ### Claim 7 (depends on 1) The battery disconnect device of claim 1, wherein the housing comprises a wall that defines an opening, and at least a portion of the bus bar and/or breaker is visible through the opening. ### Claim 8 (depends on 1) The battery disconnect device of claim 1, wherein the pivot portion is cylindrically shaped, and the actuation portion extends from a portion of a cylindrical wall of the cylindrically shaped pivot portion. ### Claim 9 (depends on 8) The battery disconnect device of claim 8, wherein the actuation portion is wedge shaped and tapers in a radially outward direction from the cylindrical wall. ### Claim 10 (depends on 1) The battery disconnect device of claim 1, wherein the bus bar comprises a first lead and a second lead, the first and second leads extend outwardly relative to an external surface of the housing. ### Claim 11 (depends on 1) The battery disconnect device of claim 1, wherein: the actuation face lies in a first plane and a second face lies in a second plane, the inlet wall of the chamber lies in a third plane, the housing further comprises a stop wall that lies in a fourth plane and an arcuate shaped wall disposed between the stop wall and the inlet wall, the third and fourth planes intersecting opposite the arcuate shaped wall of the housing, the breaker comprises an arcuate shaped face extending between the actuation face and the second face, the arcuate shaped face being opposite and spaced apart from the pivot portion, the arcuate shaped wall of the chamber faces the arcuate shaped face of the breaker, and the pivot portion of the breaker is disposed adjacent the intersection of the third and fourth planes. ### Claim 12 (depends on 11) The battery disconnect device of claim 11, wherein the arcuate shaped face of the breaker comprises at least one tooth that extends away from the arcuate shaped face, the tooth engaging the arcuate shaped wall after the breaker rotates from the first position to the second position to prevent rotation from the second position to the first position. ### Claim 13 (depends on 12) The battery disconnect device of claim 12, wherein the at least one tooth comprises a first plurality of teeth and the arcuate shaped wall defines a second plurality of teeth that extend away from the arcuate shaped wall and engage the first plurality of teeth after the breaker rotates from the first position to the second position to prevent rotation from the second position to the first position. ### Claim 14 (depends on 11) The battery disconnect device of claim 11, wherein an angle of intersection of the first and second planes is less than 90°.