# US 8,785,036 B2 · Electrochemical device and method for assembling an electrochemical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,785,036 B2 - Document ID: US8785036B2 - Status: Granted - Kind: B2 - Application number: 13/665,346 - Filed: 2012-10-31 - Published: 2014-05-01 - Granted: 2014-07-22 - Earliest claimed: 2012-10-31 - Assignees: Medtronic, Inc. - Applicants: Medtronic, Inc. - Inventors: Christian S. Nielsen - Web page: https://patentgrep.com/patent/US8785036B2 ## CPC - H01M 50/109: of button or coin shape - H01M 50/167: by crimping - H01M 50/171: using adhesives or sealing agents - H01M 50/184: characterised by their shape or structure - H01M 50/191: Inorganic material - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y10T 29/4911: including sealing - 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 - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Electrochemical device and method for assembling an electrochemical device. The electrochemical device has an electrochemical module and an enclosure configured to enclose the electrochemical module. The enclosure has a first housing portion forming a first rim and being an insulative material and a second housing portion forming a second rim and being the insulative material, the first housing portion and the second housing portion at least partially forming, when the first rim substantially abuts the second rim, a volume configured to enclose the electrochemical device. The enclosure further has a crimp ring engaging the first rim and the second rim, the crimp ring securing the first housing portion with respect to the second housing portion and a grommet positioned between and contacting the first rim and the second rim. The enclosure is substantially sealed. ## Claims ### Claim 1 An electrochemical device, comprising: an electrochemical module; and an enclosure configured to enclose said electrochemical module, comprising: a first housing portion forming a first rim; a second housing portion forming a second rim, said first housing portion and said second housing portion at least partially forming, when said first rim substantially abuts said second rim, a volume configured to enclose said electrochemical device; at least one of said first housing portion and said second housing portion being comprised of an insulative material; a crimp ring engaging said first rim and said second rim, said crimp ring being configured to secure said first housing portion with respect to said second housing portion; and a grommet positioned between and contacting said first rim and said second rim; wherein said enclosure is substantially sealed. ### Claim 2 (depends on 1) The electrochemical device of claim 1, further comprising a first feedthrough in said first housing portion and a second feedthrough in second housing portion configured to contact and provide electrical connection to said electrochemical cell at first and second locations, respectively. ### Claim 3 (depends on 2) The electrochemical device of claim 2 wherein said first feedthrough and said second feedthough are co-molded with said first housing portion and said second housing portion, respectively. ### Claim 4 (depends on 1) The electrochemical device of claim 1 wherein said first housing portion and said second housing portion are irregularly shaped. ### Claim 5 (depends on 4) The electrochemical device of claim 4 wherein said first housing portion and said second housing portion each have a major surface having an edge, wherein said edge comprises at least one linear portion. ### Claim 6 (depends on 5) The electrochemical device of claim 5 wherein said edge further comprises at least one non-linear portion. ### Claim 7 (depends on 1) The electrochemical device of claim 1 wherein said insulative material is a polymer. ### Claim 8 (depends on 1) The electrochemical device of claim 1 wherein said insulative material has a breakdown voltage of at least approximately 18.9 kiloVolts per millimeter. ### Claim 9 (depends on 1) The electrochemical device of claim 1 wherein said crimp ring is metallic. ### Claim 10 (depends on 9) The electrochemical device of claim 9 wherein said crimp ring is metal. ### Claim 11 (depends on 1) The electrochemical device of claim 1 wherein said crimp ring comprises a plurality of discontinuous segments. ### Claim 12 (depends on 1) The electrochemical device of claim 1: wherein said crimp ring comprises opposing longitudinal edges; wherein said first rim of said first housing portion and said second rim of said second housing portion each form a lip having a contact surface, said contact surface being configured to contact, at least in part, said grommet portion; and wherein each of said lip of said first rim of said first housing portion and said lip of said second rim of said second housing portion is configured to admit a respective one of said longitudinal edges of said crimp ring. ### Claim 13 (depends on 1) The electrochemical device of claim 1 wherein said crimp ring engages around a periphery of said first rim of said first housing portion and said second rim of said second housing portion. ### Claim 14 (depends on 1) The electrochemical device of claim 1 wherein at least one of said grommet and said first rim and said second rim have texture configured to secure, at least in part, said grommet to said first rim and said second rim. ### Claim 15 (depends on 1) The electrochemical device of claim 1 wherein said enclosure is substantially sealed with a leak rate of not greater than approximately 1×10−8 standard cubic centimeters of helium per second. ### Claim 16 A method of assembling an electrochemical device, comprising the steps of: placing an electrochemical module into a first housing portion having a first rim and a first feedthrough so that a first electrical terminal of said electrochemical module is in electrical contact with said first feedthrough; placing a second rim of a second housing portion in juxtaposition with said first rim of said housing portion, said second housing having a second feedthrough forming a volume enclosing said electrochemical module so that a second electrical terminal of said electrochemical module is in electrical contact with said second feedthrough, at least one of said first housing portion and said second housing portion being formed of an insulative material; positioning a grommet between and in contact with said first rim of said first housing portion and said second rim of said second housing portion; positioning a crimp ring proximate said first rim of said first housing portion and said second rim of said second housing portion; and crimping said crimp ring to engage with said first rim of said first housing portion and said second rim of said second housing portion and to secure, at least in part, said first housing portion with respect to said second housing portion and substantially seal said volume enclosing said electrochemical module. ### Claim 17 (depends on 16) The method of claim 16 wherein said first feedthrough and said second feedthough are co-molded with said first housing portion and said second housing portion, respectively. ### Claim 18 (depends on 16) The method of claim 16 wherein said first housing portion and said second housing portion are irregularly shaped. ### Claim 19 (depends on 18) The electrochemical device of claim 18 wherein said first housing portion and said second housing portion each have a major surface having an edge, wherein said edge comprises at least one linear portion. ### Claim 20 (depends on 19) The method of claim 19 wherein said edge further comprises at least one non-linear portion. ### Claim 21 (depends on 16) The method of claim 16 wherein said insulative material is a polymer. ### Claim 22 (depends on 16) The method of claim 16 wherein said crimp ring is metal. ### Claim 23 (depends on 16) The method of claim 16 wherein said crimp ring comprises a plurality of discontinuous segments. ### Claim 24 (depends on 16) The method of claim 16: wherein said crimp ring comprises substantially opposing longitudinal edges; wherein said first rim of said first housing portion and said second rim of said second housing portion each form a lip having a contact surface, said contact surface being configured to contact, at least in part, said grommet portion; and wherein said crimping step admits a respective one of said longitudinal edges of said crimp ring into each of said lip of said first rim of said first housing portion and said lip of said second rim of said second housing portion. ### Claim 25 (depends on 16) The method of claim 16 wherein crimping step engages said crimp ring around a periphery of said first rim of said first housing portion and said second rim of said second housing portion. ### Claim 26 (depends on 16) The method of claim 16 wherein at least one of said grommet and said first rim and said second rim have texture configured to secure, at least in part, said grommet to said first rim and said second rim. ### Claim 27 (depends on 16) The method of claim 16 wherein crimping step substantially seals said enclosure with a leak rate of not greater than approximately 1×10−8 standard cubic centimeters of helium per second. ### Claim 28 (depends on 16) The method of claim 16 wherein said insulative material has a breakdown voltage of at least approximately 18.9 kiloVolts per millimeter.