# US 2014/0191763 A1 · Detection device for lithium-ion battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191763 A1 - Document ID: US20140191763A1 - Status: Published application - Kind: A1 - Application number: 14/147,465 - Filed: 2014-01-03 - Published: 2014-07-10 - Earliest claimed: 2013-01-10 - Assignees: Ningde Amperex Technology Limited - Applicants: Ningde Amperex Technology Limited - Inventors: Junzhong Hu; Chengyou Xing; Pinghua Deng; Yanhua Lu; Xiaolei Liu - Web page: https://patentgrep.com/patent/US20140191763A1 ## CPC - H01M 10/4285: {Testing apparatus} - Y02E 60/10: Energy storage using batteries - 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 The present disclosure provides a detection device for lithium-ion battery, which comprises an insulative housing having a receiving chamber; an insulative separator positioned between the positive electrode sheet and the negative electrode sheet when the positive electrode sheet and the negative electrode sheet are received in the receiving chamber; a positive electrode sheet conductive fastener passing through the insulative housing and fixedly connected to a positive electrode current collector at a positive electrode current collector non-film-coating region; a negative electrode sheet conductive fastener passing through the insulative housing and fixedly connected to a negative electrode current collector at a negative electrode current collector non-film-coating region; an insulative cover engaged with the insulative housing and the insulative separator; a positive electrode region detection hole communicated to the positive electrode sheet gas region; and a negative electrode region detection hole communicated to the negative electrode sheet gas region. ## Claims ### Claim 1 A detection device for lithium-ion battery, comprising: an insulative housing (1) having a receiving chamber (11) for receiving a positive electrode sheet (10), a negative electrode sheet (10′), and an electrolyte (L) of a lithium-ion battery, the receiving chamber (11) comprising a positive electrode sheet gas region (111) and a negative electrode sheet gas region (111′) formed above the electrolyte (L); an insulative separator (2) provided in the receiving chamber (11) of the insulative housing (1) in a sealing manner, and positioned between the positive electrode sheet (10) and the negative electrode sheet (10′) of the lithium-ion battery when the positive electrode sheet (10) and the negative electrode sheet (10′) of the lithium-ion battery are received in the receiving chamber (11), to separate the positive electrode sheet gas region (111) and the negative electrode sheet gas region (111′) of the receiving chamber (11); a positive electrode sheet conductive fastener (3) passing through the insulative housing (1) in a sealing manner and fixedly connected to a positive electrode current collector (101) of the positive electrode sheet (10) of the lithium-ion battery at a positive electrode current collector non-film-coating region (105), to fix the positive electrode sheet (10) in the receiving chamber (11) of the insulative housing (1); a negative electrode sheet conductive fastener (3′) passing through the insulative housing (1) in a sealing manner and fixedly connected to a negative electrode current collector (101′) of the negative electrode sheet (10′) of the lithium-ion battery at a negative electrode current collector non-film-coating region (105′), to fix the negative electrode sheet (10′) in the receiving chamber (11) of the insulative housing (1); an insulative cover (4) engaged with the insulative housing (1) and the insulative separator (2) in a sealing manner; and a positive electrode region detection hole (5) provided on the insulative housing (1) and/or the insulative cover (4) in a sealing manner and communicated to the positive electrode sheet gas region (111); and a negative electrode region detection hole (5′) provided on the insulative housing (1)and/or the insulative cover (4) in a sealing manner and communicated to the negative electrode sheet gas region (111′). ### Claim 2 (depends on 1) The detection device for lithium-ion battery according to claim 1, wherein the insulative separator (2) and the insulative housing (1) are integral, or the insulative separator (2) is a separate piece engaged with the insulative housing (1) and the insulative cover (3) in a sealing manner. ### Claim 3 (depends on 1) The detection device for lithium-ion battery according to claim 1, wherein the positive electrode region detection hole (5) comprises: a positive electrode region gas pressure detection hole (51) communicated to the positive electrode sheet gas region (111) for allowing a barometer to pass through in a sealing manner, so as to detect a gas pressure of the positive electrode sheet gas region (111); and a positive electrode region temperature detection hole (53) communicated to the positive electrode sheet gas region (111) for allowing a thermometer to pass through in a sealing manner, so as to detect a temperature of the positive electrode sheet gas region (111); the negative electrode region detection hole (5′) comprises: a negative electrode region gas pressure detection hole (51′) communicated to the negative electrode sheet gas region (111′) for allowing a barometer to pass through in a sealing manner, so as to detect a gas pressure of the negative electrode sheet gas region (111′); and a negative electrode region temperature detection hole (53′) communicated to the negative electrode sheet gas region (111′) for allowing a thermometer to pass through in a sealing manner, so as to detect a temperature of the negative electrode sheet gas region (111′). ### Claim 4 (depends on 3) The detection device for lithium-ion battery according to claim 3, wherein the positive electrode region detection hole (5) further comprises: a positive electrode region gas extraction hole (55) communicated to the positive electrode sheet gas region (111) for extracting a gas of the positive electrode sheet gas region (111); and the negative electrode region detection hole (5′) further comprises: a negative electrode region gas extraction hole (55′) communicated to the negative electrode sheet gas region (111′) for extracting a gas of the negative electrode sheet gas region (111′). ### Claim 5 (depends on 1) The detection device for lithium-ion battery according to claim 1, further comprising: a positive electrode sheet plastic strengthening fastener (6) fixedly connected to a side of the positive electrode sheet (10) of the lithium-ion battery facing the insulative separator (2) via the positive electrode sheet conductive fastener (3); and a negative electrode sheet plastic strengthening fastener (6′) fixedly connected to a side of the negative electrode sheet (10′) of lithium-ion battery facing the insulative separator (2) via the negative electrode sheet conductive fastener (3′). ### Claim 6 (depends on 5) The detection device for lithium-ion battery according to claim 5, wherein the positive electrode sheet plastic strengthening fastener (6) has a liquid hole (61) provided thereon and communicated to the electrolyte (L) added in the receiving chamber (11); and the negative electrode sheet plastic strengthening fastener(6′) has a liquid hole (61′) provided thereon and communicated to the electrolyte (L) added in the receiving chamber (11). ### Claim 7 (depends on 5) The detection device for lithium-ion battery according to claim 5, further comprising: a positive electrode sheet conductive plate (7) fixedly connected to the positive electrode current collector (101) of the positive electrode sheet (10) of the lithium-ion battery at the positive electrode current collector non-film-coating region (105) and facing the insulative housing (1) via the positive electrode sheet conductive fastener (3); and a negative electrode sheet conductive plate (7′) fixedly connected to the negative electrode current collector (101′) of the negative electrode sheet (10′) of the lithium-ion battery at the negative electrode current collector non-film-coating region (105′) and facing the insulative housing (1) via the negative electrode sheet conductive fastener (3′). ### Claim 8 (depends on 7) The detection device for lithium-ion battery according to claim 7, wherein the positive electrode sheet conductive plate (7) is covered by the positive electrode current collector (101) of the positive electrode sheet (10) of the lithium-ion battery at the positive electrode current collector non-film-coating region (105) and facing the insulative housing (1); and the negative electrode sheet conductive plate (7′) is covered by the negative electrode current collector (101′) of the negative electrode sheet (10′) of the lithium-ion battery at the negative electrode current collector non-film-coating region (105′) and facing the insulative housing (1). ### Claim 9 (depends on 1) The detection device for lithium-ion battery according to claim 1, further comprising: a positive electrode sheet fastener (8) passing through the insulative housing (1) in a sealing manner and fixedly connected to the positive electrode current collector (101) of the positive electrode sheet (10) of the lithium-ion battery at the positive electrode current collector non-film-coating region (105); and a negative electrode sheet fastener (8′) passing through the insulative housing (1) in a sealing manner and fixedly connected to the negative electrode current collector (101′) of the negative electrode sheet (10′) of the lithium-ion battery at the negative electrode current collector non-film-coating region (105′). ### Claim 10 (depends on 9) The detection device for lithium-ion battery according to claim 9, further comprising: a positive electrode sheet side insulative cover (9) recessed in the insulative housing (1) and covering the positive electrode sheet fastener (8) and a stopping portion (31) of the positive electrode sheet conductive fastener (3); and a negative electrode sheet side insulative cover (9′) recessed in the insulative housing (1) and covering the negative electrode sheet fastener (8′) and a stopping portion (31′) of the negative electrode sheet conductive fastener (3′). ### Claim 11 (depends on 10) The detection device for lithium-ion battery according to claim 10, wherein when the positive electrode sheet side insulative cover (9) is recessed in the insulative housing (1), an outer surface (91) of the positive electrode sheet side insulative cover (9) is flush with an positive electrode sheet side housing outer surface (13) of the insulative housing (1); and when the negative electrode sheet side insulative cover (9′) is recessed in the insulative housing (1), an outer surface (91′) of the negative electrode sheet side insulative cover (9′) is flush with a negative electrode sheet side housing outer surface (13′) of the insulative housing (1). ### Claim 12 (depends on 1) The detection device for lithium-ion battery according to claim 1, wherein the insulative housing (1), the insulative separator (2), and the insulative cover (3) are transparent plastics. ### Claim 13 (depends on 10) The detection device for lithium-ion battery according to claim 10, wherein the positive electrode sheet side insulative cover (9) and the negative electrode sheet side insulative cover (9′) are transparent plastics.