# US 12,009,490 B2 · Method and apparatus for determining status of battery temperature sensor, medium, vehicle, and server > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,009,490 B2 - Document ID: US12009490B2 - Status: Granted - Kind: B2 - Application number: 17/507,364 - Filed: 2021-10-21 - Published: 2022-04-28 - Granted: 2024-06-11 - Earliest claimed: 2020-10-23 - Assignees: Nio Technology (Anhui) Co., Ltd - Applicants: Nio Technology (Anhui) Co., Ltd - Inventors: Peng Zhang; Huaidong Tang; Xudong Zhang - Web page: https://patentgrep.com/patent/US12009490B2 ## CPC - B60L 3/0038: {relating to sensors} - H01M 10/486: {for measuring temperature} - B60L 3/12: Recording operating variables {; Monitoring of operating variables} - G01K 1/022: for recording - G01K 1/024: for remote indication - G01K 3/10: in respect of time, e.g. reacting only to a quick change of temperature - G01K 15/007: {Testing} - B60L 2240/545: Temperature - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract This application relates to a method and an apparatus for determining a status of a battery temperature sensor, a medium, a vehicle, and a server. The method includes: receiving reading statistics of a temperature sensor that are collected at intervals of a predetermined time in a stable vehicle working condition, where the reading statistics include a highest temperature reading and a lowest temperature reading of the temperature sensor within each predetermined time; determining a highest temperature reading trend, a lowest temperature reading trend, and a largest temperature reading difference in the stable vehicle working condition based on the highest temperature reading and the lowest temperature reading; and determining a status of the temperature sensor based on the highest temperature reading trend, the lowest temperature reading trend, and the largest temperature reading difference. The method is capable of accurately determining whether a battery temperature sensor is anomalous. ## Claims ### Claim 1 A method for determining a status of a battery temperature sensor, comprising: receiving reading statistics of a temperature sensor that are collected at intervals of a predetermined time in a stable vehicle working condition, wherein the reading statistics comprise a highest temperature reading and a lowest temperature reading of the temperature sensor within each predetermined time; determining a highest temperature reading trend, a lowest temperature reading trend, and a largest temperature reading difference in the stable vehicle working condition based on the highest temperature reading and the lowest temperature reading; and determining a status of the temperature sensor based on the highest temperature reading trend, the lowest temperature reading trend, and the largest temperature reading difference. ### Claim 2 (depends on 1) The method according to claim 1, wherein the stable vehicle working condition is a vehicle driving condition or a vehicle charging condition. ### Claim 3 (depends on 2) The method according to claim 2, wherein the vehicle driving condition is any time period in a process from the start to the end of a vehicle trip, and the vehicle charging condition is any time period in a process from the start to the end of vehicle charging. ### Claim 4 (depends on 1) The method according to claim 1, wherein the status comprises: normal, anomalous, or pending. ### Claim 5 (depends on 4) The method according to claim 4, wherein the method comprises: determining an accumulated highest temperature reading difference and an accumulated lowest temperature reading difference in the stable vehicle working condition based on the highest temperature readings and the lowest temperature readings in adjacent predetermined times, wherein the accumulated highest temperature reading difference is a sum of absolute values of differences between the highest temperature readings in the adjacent predetermined times, and the accumulated lowest temperature reading difference is a sum of absolute values of differences between the lowest temperature readings in the adjacent predetermined times. ### Claim 6 (depends on 5) The method according to claim 5, wherein the method comprises: if the accumulated lowest temperature reading difference exceeds N times of the accumulated highest temperature reading difference, and the largest temperature reading difference is greater than a first preset temperature difference, determining that the temperature sensor is anomalous, wherein N is greater than 1.5. ### Claim 7 (depends on 5) The method according to claim 5, wherein the method comprises: if the accumulated lowest temperature reading difference exceeds N times of the accumulated highest temperature reading difference, or the largest temperature reading difference is greater than a first preset temperature difference, determining that the temperature sensor is pending, wherein Nis greater than 1.5. ### Claim 8 (depends on 6) The method according to claim 6, wherein N=2. ### Claim 9 (depends on 6) The method according to claim 6, wherein N is determined based on statistics on a battery temperature sensor whose status is known. ### Claim 10 (depends on 4) The method according to claim 4, wherein the method comprises: issuing an alarm if it is determined that the temperature sensor is in an anomalous state. ### Claim 11 An apparatus for determining a status of a battery temperature sensor, comprising: a communications module configured to receive reading statistics of a temperature sensor that are collected at intervals of a predetermined time in a stable vehicle working condition, wherein the reading statistics comprise a highest temperature reading and a lowest temperature reading of the temperature sensor within each predetermined time; a calculation module configured to determine a highest temperature reading trend, a lowest temperature reading trend, and a largest temperature reading difference in the stable vehicle working condition based on the highest temperature reading and the lowest temperature reading; and a determining module configured to determine a status of the temperature sensor based on the highest temperature reading trend, the lowest temperature reading trend, and the largest temperature reading difference. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the stable vehicle working condition is a vehicle driving condition or a vehicle charging condition. ### Claim 13 (depends on 12) The apparatus according to claim 12, wherein the vehicle driving condition is any time period in a process from the start to the end of a vehicle trip, and the vehicle charging condition is any time period in a process from the start to the end of vehicle charging. ### Claim 14 (depends on 11) The apparatus according to claim 11, wherein the status comprises: normal, anomalous, or pending. ### Claim 15 (depends on 14) The apparatus according to claim 14, wherein the calculation module is configured to determine an accumulated highest temperature reading difference and an accumulated lowest temperature reading difference in the stable vehicle working condition based on the highest temperature readings and the lowest temperature readings in adjacent predetermined times, wherein the accumulated highest temperature reading difference is a sum of absolute values of differences between the highest temperature readings in the adjacent predetermined times, and the accumulated lowest temperature reading difference is a sum of absolute values of differences between the lowest temperature readings in the adjacent predetermined times; and the determining module is configured to determine the status of the temperature sensor based on the accumulated highest temperature reading difference, the accumulated lowest temperature reading difference, and the largest temperature reading difference. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein if the determining module determines that the accumulated lowest temperature reading difference exceeds N times of the accumulated highest temperature reading difference, and the largest temperature reading difference is greater than a first preset temperature difference, the determining module determines that the temperature sensor is anomalous, wherein N is greater than 1.5. ### Claim 17 (depends on 15) The apparatus according to claim 15, wherein if the determining module determines that the accumulated lowest temperature reading difference exceeds N times of the accumulated highest temperature reading difference, or the largest temperature reading difference is greater than a first preset temperature difference, the determining module determines that the temperature sensor is pending, wherein N is greater than 1.5. ### Claim 18 (depends on 16) The apparatus according to claim 16, wherein the apparatus further comprises a statistics collection module configured to determine a value of N based on statistics on a battery temperature sensor whose status is known. ### Claim 19 (depends on 15) The apparatus according to claim 15, wherein the apparatus further comprises an alarm module configured to issue an alarm when the determining module determines that the temperature sensor is in an anomalous state. ### Claim 20 A vehicle, wherein the vehicle comprises an apparatus for determining a status of a battery temperature sensor, the apparatus comprising: a communications module configured to receive reading statistics of a temperature sensor that are collected at intervals of a predetermined time in a stable vehicle working condition, wherein the reading statistics comprise a highest temperature reading and a lowest temperature reading of the temperature sensor within each predetermined time; a calculation module configured to determine a highest temperature reading trend, a lowest temperature reading trend, and a largest temperature reading difference in the stable vehicle working condition based on the highest temperature reading and the lowest temperature reading; and a determining module configured to determine a status of the temperature sensor based on the highest temperature reading trend, the lowest temperature reading trend, and the largest temperature reading difference.