# US 2018/0026256 A1 · Battery and method for manufacturing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0026256 A1 - Document ID: US20180026256A1 - Status: Published application - Kind: A1 - Application number: 15/550,668 - Filed: 2016-02-09 - Published: 2018-01-25 - Earliest claimed: 2015-02-17 - Assignees: NEC Corporation - Applicants: NEC Corporation - Inventors: Kazuhiko INOUE; Kenichi SHIMURA - Web page: https://patentgrep.com/patent/US20180026256A1 ## CPC - H01M 50/581: in response to temperature - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/058: Construction or manufacture - H01M 50/178: for pouch or flexible bag cells - H01M 50/211: adapted for pouch cells - H01M 50/548: on opposite sides of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - H01M 50/562: characterised by the material - H01M 50/578: in response to pressure - H01M 10/052: Li-accumulators - H01M 2200/10: Temperature sensitive devices - H01M 2200/20: Pressure-sensitive devices - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - 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 - 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 Provided is a battery capable of surely interrupting current at the time of temperature rise so that excessive heat generation does not occur at the occurrence of an abnormality. The battery 1 includes a battery element 10 including a positive electrode and a negative electrode, an inner package 13 which forms a first chamber 13a for enclosing the battery element 10, an outer package 14 which encloses the inner package 13 such that the outer package 14 forms a second chamber 14a which surrounds the first chamber 13a, and a pair of terminals 11, 12 electrically connected to the positive electrode and the negative electrode and led out to the outside of the outer package 14. One terminal 11 of the pair of terminals 11, 12 has a first terminal 11a and a second terminal 11b arranged so as to be electrically connected in the second chamber 13a. A gas generating material 14 which generates gas at a predetermined temperature or higher or a predetermined voltage or higher is enclosed in the first chamber 13a or the second chamber 14a. ## Claims ### Claim 1 A battery comprising: a battery element including a positive electrode and a negative electrode; an inner package forming a first chamber for enclosing the battery element; and an outer package covering at least a part of the inner package so as to form a second chamber surrounding at least a part of the first chamber; a pair of terminals electrically connected to the positive electrode and the negative electrode and led out to the outside of the outer package, wherein at least one terminal of the pair of terminals has a first terminal and a second terminal arranged so as to be electrically connected in the second chamber, and a gas generating material is enclosed in the first chamber or the second chamber, wherein the gas generating material generates gas at a predetermined temperature or higher or a predetermined voltage or higher. ### Claim 2 (depends on 1) The battery according to claim 1, wherein the battery element includes an electrolyte containing the gas generating material. ### Claim 3 (depends on 1) The battery according to claim 1, wherein an electrolyte containing the gas generating material is enclosed in the second chamber. ### Claim 4 (depends on 1) The battery according to claim 1, wherein the outer package is configured to expand in a terminal direction, which is a direction in which the second terminal is led out. ### Claim 5 (depends on 4) The battery according to claim 4, wherein the outer package is bent in a thickness direction of the first chamber. ### Claim 6 (depends on 2) The battery according to claim 2, wherein the outer package is configured such that the second chamber inflates in a thickness direction of the battery element. ### Claim 7 (depends on 6) The battery according to claim 6, wherein the first terminal is joined to one inner surface of the opposing outer package and the second terminal is joined to the other inner surface in the second chamber. ### Claim 8 (depends on 1) The battery according to claim 1, wherein the first terminal and the second terminal are temporarily fixed in contact with each other. ### Claim 9 (canceled) ### Claim 10 (canceled) ### Claim 11 (canceled) ### Claim 12 (depends on 8) The battery according to claim 8, wherein the first terminal and the second terminal are temporarily fixed by coating a portion where the first terminal and the second terminal are in contact with each other from the outside with a thermoplastic resin. ### Claim 13 (canceled) ### Claim 14 (depends on 1) The battery according to claim 1, wherein the gas generating material comprises a volatile material. ### Claim 15 (depends on 14) The battery according to claim 14, wherein the volatile material is a solvent. ### Claim 16 (depends on 15) The battery according to claim 15, wherein a volatilization temperature of the solvent is 50° C. or more and less than 200° C. ### Claim 17 (depends on 15) The battery according to claim 15, wherein the solvent is a nonaqueous solvent. ### Claim 18 (depends on 17) The battery according to claim 17, wherein the nonaqueous solvent contains an electrolyte component. ### Claim 19 (depends on 1) A battery pack comprising: at least one battery according to claim 1; and a holding member which holds the battery by sandwiching the battery from both sides in the thickness direction. ### Claim 20 (canceled) ### Claim 21 (canceled) ### Claim 22 A method for manufacturing a battery, comprising steps of: enclosing a battery element including a positive electrode and a negative electrode in a first chamber formed by an inner package, after connecting a pair of first terminals to the positive electrode and the negative electrode, with the pair of first terminals led out from the inner package; and enclosing the inner package in a second chamber formed outside of the inner package by an outer package, wherein the step includes arranging a second terminal such that at least one first terminal of the pair of first terminal is electrically connected in the second chamber and covering at least a part of the inner package with the outer package; wherein the step of enclosing the battery element in the first chamber or the step of enclosing the inner package in the second chamber includes enclosing a gas generating material, which generate gas at a predetermined temperature or higher or a predetermined voltage or higher, together. ### Claim 23 (depends on 22) The method for manufacturing the battery according to claim 22, wherein the step of covering at least a part of the inner package with the outer package includes joining the first terminal to one surface of the opposing outer package and joining the second terminal to the other surface thereof, in the second chamber. ### Claim 24 (depends on 22) The method for manufacturing the battery according to claim 22, wherein the step of covering at least a part of the inner package with the outer package includes temporarily fixing the second terminal in a state of being electrically connected to the first terminal. ### Claim 25 (canceled) ### Claim 26 (canceled) ### Claim 27 (canceled)