# US 10,120,031 B2 · Probe for testing charging/discharging of secondary battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,120,031 B2 - Document ID: US10120031B2 - Status: Granted - Kind: B2 - Application number: 15/597,600 - Filed: 2017-05-17 - Published: 2017-08-31 - Granted: 2018-11-06 - Earliest claimed: 2015-01-14 - Assignees: Megatouch, LLC - Applicants: Megatouch Co., Ltd. - Inventors: Woo Yong Choi; Byung Il Lee; Hyeon Sik Kim - Web page: https://patentgrep.com/patent/US10120031B2 ## CPC - G01R 31/3644: {Constructional arrangements} - H01M 10/4285: {Testing apparatus} - H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) - H01M 50/569: Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) - G01R 1/06722: {Spring-loaded} - Y02E 60/10: Energy storage using batteries - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - 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 A charge and discharge test probe for a secondary battery includes: an inner plunger moved up and down by elastic force of a spring; a head having a central through hole through which the inner plunger passes to protrude from an upper end of the head; and a first conductive elastic member mounted to the head. ## Claims ### Claim 1 A charge and discharge test probe for a secondary battery, the probe comprising: an inner plunger moved up and down by elastic force; a head provided with a plurality of probe tips formed on an upper end thereof and a central through hole through which the inner plunger passes to protrude from the upper end of the head; and a first conductive elastic member mounted to the head, wherein the plurality of probe tips have contact points to comes into contact with an electrode terminal of the secondary battery, and wherein the first conductive elastic member is elastically deformed by compressive force when the first conductive elastic member comes into contact with the electrode terminal of the secondary battery and is recovered when the compressive force is removed. ### Claim 2 (depends on 1) The charge and discharge test probe according to claim 1, wherein the first conductive elastic member protrudes farther than the plurality of probe tips formed on the upper end of the head. ### Claim 3 (depends on 1) The charge and discharge test probe according to claim 1, wherein the head is provided with a recess and the first conductive elastic member is installed in the recess. ### Claim 4 (depends on 3) The charge and discharge test probe according to claim 3, wherein the recess is open at an upper end and has a trapezoidal cross section that is relatively narrow at the open upper end and relatively broad at a closed lower end. ### Claim 5 (depends on 3) The charge and discharge test probe according to claim 3, wherein the first conductive elastic member is a canted coil spring. ### Claim 6 (depends on 3) The charge and discharge test probe according to claim 3, wherein the first conductive elastic member is a leaf spring with a probe tip, the recess comprises one or more recesses arranged in radial directions with respect to the central through hole formed in the head, and a pin accommodation recess is formed in a portion of the recess such that a pin to fix the leaf spring is inserted into the pin accommodation recess. ### Claim 7 (depends on 6) The charge and discharge test probe according to claim 6, wherein the recesses are arranged respectively at an upper side, lower side, left side, and right side of the central through hole. ### Claim 8 (depends on 6) The charge and discharge test probe according to claim 6, wherein the leaf spring comprises: a fixed plate that is horizontally in surface contact with a bottom surface of the recess; a pin hole formed in a portion of the fixed plate; and a probing plate extending obliquely upward from an end of the fixed plate and having an upper end provided with the probe tip. ### Claim 9 (depends on 8) The charge and discharge test probe according to claim 8, wherein the leaf spring is installed in the recess such that the probing plate is disposed to be near the central through hole. ### Claim 10 (depends on 3) The charge and discharge test probe according to claim 3, wherein the first conductive elastic member has a helical shape. ### Claim 11 (depends on 10) The charge and discharge test probe according to claim 10, wherein the recess is formed such that a lower portion thereof serves as a fixing space having a diameter larger than that of an upper portion of the recess, and a bottom of the fixing space is provided with a communication hole through which the inner plunger passes to protrude from the upper end of the head. ### Claim 12 (depends on 11) The charge and discharge test probe according to claim 11, wherein the first conductive elastic member comprises: a helical body in which each turn of wire has a predetermined thickness; a cylindrical hollow formed in a center portion of the body; a probe tip provided at an upper end of the body; and a fixed portion extending from a lower end of the body and having a diameter larger than that of the body. ### Claim 13 (depends on 10) The charge and discharge test probe according to claim 10, wherein the fixed portion is fitted in the fixing space of the recess. ### Claim 14 (depends on 10) The charge and discharge test probe according to claim 10, wherein the first conductive elastic member is a coil spring. ### Claim 15 (depends on 10) The charge and discharge test probe according to claim 10, wherein the first conductive elastic member comprises: a helical body in which each turn of wire has a predetermined thickness; and a probe tip assembly provided with a probe tip and installed at an upper end of the body. ### Claim 16 (depends on 15) The charge and discharge test probe according to claim 15, wherein the recess is formed such that a portion of the recess to accommodate the body has a diameter smaller than that of a portion of the recess to accommodate the probe tip assembly. ### Claim 17 (depends on 1) The charge and discharge test probe according to claim 1, further comprising a second conductive member mounted to the head. ### Claim 18 (depends on 17) The charge and discharge test probe according to claim 17, wherein the first conductive elastic member and the second conductive elastic member have a helical shape, and each of the first conductive elastic member and the second conductive elastic member comprises: a helical body in which each turn of wire has a predetermined thickness, is inclined at a predetermined angle, and is arranged at regular pitches; a cylindrical hollow formed in a center portion of the body; a probe tip formed at an upper end of the body; and a fixed portion disposed at a lower end of the body and having a diameter larger than that of the body. ### Claim 19 (depends on 18) The charge and discharge test probe according to claim 18, wherein the head is provided with a recess, the first conductive elastic member and the second conductive elastic member are installed in the recess, a lower portion of the recess serves as a fixing space having a diameter larger than that of an upper portion of the recess, and a bottom of the fixing space is provided with a communication hole through which the inner plunger passes to protrude from the upper end of the head.