# US 2013/0156072 A1 · Electrical storage device temperature measuring method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0156072 A1 - Document ID: US20130156072A1 - Status: Published application - Kind: A1 - Application number: 13/766,688 - Filed: 2013-02-13 - Published: 2013-06-20 - Earliest claimed: 2011-08-01 - Assignees: Alps Green Devices Co., Ltd. - Inventors: Hiroyuki HEBIGUCHI - Web page: https://patentgrep.com/patent/US20130156072A1 ## CPC - G01R 31/382: Arrangements for monitoring battery or accumulator variables, e.g. SoC - G01K 7/42: Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature - G01K 13/00: Thermometers specially adapted for specific purposes - 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 10/486: {for measuring temperature} - H01G 11/18: against thermal overloads, e.g. heating, cooling or ventilating - H01G 11/84: Processes for the manufacture of hybrid or EDL capacitors, or components thereof - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An internal impedance of an electrical storage device is measured by using a signal of a frequency which ions in the electrical storage device are difficult to follow (e.g., a frequency equal to or higher than 10 kHz), and an internal temperature of the electrical storage device is calculated from a measured value of the internal impedance. ## Claims ### Claim 1 An electrical storage device temperature measuring method comprising: measuring an internal impedance of an electrical storage device by using a signal of a frequency which ions in the electrical storage device are difficult to follow; and calculating an internal temperature of the electrical storage device from a measured value of the internal impedance. ### Claim 2 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein the electrical storage device includes a positive electrode collector, an electrolyte, a separator, and a negative electrode collector, and the frequency is a frequency in which at least one of the positive electrode collector, the electrolyte, the separator, and the negative electrode collector is measured as an electron-conductive resistance. ### Claim 3 An electrical storage device temperature measuring method comprising: measuring an internal impedance of an electrical storage device by using a signal of a frequency equal to or higher than 10 kHz; and calculating an internal temperature of the electrical storage device from a measured value of the internal impedance. ### Claim 4 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein a transient response induced by a pulse provided to the electrical storage device is converted to a frequency component by using a Fourier transform to calculate the internal impedance of the frequency as the measured value. ### Claim 5 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein the electrical storage device is a secondary battery. ### Claim 6 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein by a low-pass filter provided between the electrical storage device and a charging circuit connected to the electrical storage device, noise of the frequency of the signal is eliminated, the noise being generated in the charging circuit. ### Claim 7 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein by a low-pass filter provided between the electrical storage device and a load connected to the electrical storage device, noise of the frequency of the signal is eliminated, the noise being generated in the load. ### Claim 8 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein the internal impedance of the electrical storage device is measured by using the signal of the frequency, the signal being generated by a switch power supply of a power converter connected to the electrical storage device. ### Claim 9 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein the internal impedance of the electrical storage device is measured by using the signal of the frequency in which an impedance of the electrical storage device is lower than an impedance of a charging circuit connected to the electrical storage device, the impedance of the charging circuit being observed from the electrical storage device side. ### Claim 10 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein the internal impedance of the electrical storage device is measured by using the signal of the frequency in which an impedance of the electrical storage device is lower than an impedance of a load connected to the electrical storage device, the impedance of the load being observed from the electrical storage device side. ### Claim 11 (depends on 1) The electrical storage device temperature measuring method according to claim 1, wherein by a phase compensation circuit connected to the electrical storage device, a phase of a current and a phase of a voltage by the signal of the frequency are caused to coincide with each other. ### Claim 12 (depends on 11) The electrical storage device temperature measuring method according to claim 11, wherein the electrical storage device and the phase compensation circuit constitute a resonance circuit. ### Claim 13 (depends on 11) The electrical storage device temperature measuring method according to claim 11, wherein the phase compensation circuit includes a capacitor. ### Claim 14 An electrical storage device temperature measuring method comprising: measuring an internal impedance of an electrical storage device by using a signal of a frequency in which an inductance component of the internal impedance of the electrical storage device is more dominant than a capacitance component thereof; and calculating an internal temperature of the electrical storage device from a measured value of the internal impedance. ### Claim 15 An electrical storage device temperature measuring method comprising: measuring an internal impedance of an electrical storage device by using a signal of a frequency in which a resistance component of the internal impedance of the electrical storage device is increased with increase in a temperature; and calculating an internal temperature of the electrical storage device from a measured value of the internal impedance.