WO2021040246A1 - Système et procédé de surveillance de pile - Google Patents

Système et procédé de surveillance de pile Download PDF

Info

Publication number
WO2021040246A1
WO2021040246A1 PCT/KR2020/009850 KR2020009850W WO2021040246A1 WO 2021040246 A1 WO2021040246 A1 WO 2021040246A1 KR 2020009850 W KR2020009850 W KR 2020009850W WO 2021040246 A1 WO2021040246 A1 WO 2021040246A1
Authority
WO
WIPO (PCT)
Prior art keywords
wavelength band
micrometers
radiation
battery
gas
Prior art date
Application number
PCT/KR2020/009850
Other languages
English (en)
Korean (ko)
Inventor
이병수
Original Assignee
주식회사 템퍼스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 템퍼스 filed Critical 주식회사 템퍼스
Publication of WO2021040246A1 publication Critical patent/WO2021040246A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
    • G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0014—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/025—Interfacing a pyrometer to an external device or network; User interface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G01J5/0801—Means for wavelength selection or discrimination
    • G01J5/0802—Optical filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery monitoring system and method, and more particularly, to a battery monitoring system and method capable of preventing an accident by detecting a precursor symptom of a battery explosion.
  • One of the conventional methods for detecting a battery explosion accident in advance is a method of taking measures such as shutting off power or stopping charging and discharging by detecting excessive heat generated from the battery in advance.
  • the change in battery temperature that occurs before the battery explodes is that the change in battery temperature rises rapidly for a very short period of time, and after such a rapid increase in the battery temperature, the explosion may not be prevented even if the power is cut off or charging and discharging are stopped.
  • the present invention has been proposed to solve these conventional problems, and while maintaining the function of the battery, it is possible to detect gas generation inside the battery, and passive signal detection that does not require a separate light source that may promote fire. signal detection) method to speed up the response speed, reduce power consumption, and reduce the deviation of the generated signal according to the temperature change of the battery by monitoring the ratio between the reference radiation and the absorption line of a specific gas according to the temperature change.
  • the detection accuracy can be improved, and if the ratio of the reference radiation and the absorption line of a specific gas is out of the normal value, it is judged that there is a high risk of explosion due to the generation of CO 2 , O 2 , C 2 H 4 gas, and the battery explosion can be prevented.
  • these problems are exemplary, and the scope of the present invention is not limited thereby.
  • a battery monitoring system for solving the above problem includes: a first detector capable of detecting radiation in a first wavelength band generated from a battery; A second detector capable of detecting radiation in the second wavelength band absorbed by the first gas that may be generated as a rolling phenomenon when the battery explodes; And a control unit configured to generate a notification signal when the ratio is out of a normal value according to a ratio of the electric signal generated by the first detection unit and the electric signal generated by the second detection unit.
  • a window or a filter window may be installed at least in part of the battery so that radiation of the first wavelength band and radiation of the second wavelength band may be emitted.
  • the first detection unit includes: a first radiation detection element spaced apart from the battery in a non-contact manner; And a first filter capable of passing both the radiation of the first wavelength band and the radiation of the second wavelength band so that both the radiation of the first wavelength band and the radiation of the second wavelength band reach the first radiation sensing element. It may include.
  • the second sensing unit includes: a second radiation sensing element spaced apart from the battery in a non-contact manner; And a second filter capable of blocking radiation of the first wavelength band and passing radiation of the second wavelength band so that only the radiation of the second wavelength band can reach the second radiation sensing element.
  • the first wavelength band when the first gas includes a C 2 H 4 gas component, the first wavelength band includes 5.5 micrometers to 9 micrometers and 12 micrometers to 14 micrometers, and the second The wavelength band may include 9 micrometers to 12 micrometers.
  • the first wavelength band when the first gas includes a CO 2 gas component, the first wavelength band includes 1 micrometer to 3 micrometers and 6 micrometers to 14 micrometers, and the second wavelength band is It may include 3 micrometers to 6 micrometers.
  • the battery monitoring system further includes a third detector capable of detecting radiation in a third wavelength band absorbed by a second gas that may be generated as a precursor when a battery explodes
  • the control unit further includes the control unit. May generate a notification signal when the ratio is out of a normal value according to a ratio of an electric signal generated by the first detection unit and an electric signal generated by the third detection unit.
  • the first wavelength band is 1 micrometer to 3 micrometers, 6 Including micrometers to 9 micrometers and 12 micrometers to 14 micrometers, the second wavelength band may include 9 micrometers to 12 micrometers, and the third wavelength band may include 3 micrometers to 6 micrometers.
  • the battery monitoring method for solving the above problem, the step of detecting radiation in the first wavelength band generated from the battery; Detecting radiation in the second wavelength band absorbed by the first gas that may be generated as a precursor when the battery explodes; And generating a notification signal when the ratio is out of a normal value according to a ratio of an electric signal generated by the first detection unit and an electric signal generated by the second detection unit.
  • the present invention it is possible to detect gas generation inside the battery while maintaining the function of the battery, and a passive signal detection that does not require a separate light source that may promote a fire. detection) method to speed up the response speed, reduce power consumption, and reduce the deviation of the generated signal according to the temperature change of the battery by monitoring the mutual ratio of the reference radiation according to the temperature change and the absorption line of a specific gas.
  • the accuracy of the battery can be improved, and if the ratio of the reference radiation and the absorption line of a specific gas is out of the normal value, it is judged that there is a high risk of explosion due to the generation of CO 2 , O 2 , C 2 H 4 gas, and the battery explosion can be prevented. It has the effect of taking a follow-up action.
  • the scope of the present invention is not limited by these effects.
  • FIG. 1 is a conceptual diagram illustrating the principle of the present invention.
  • FIG. 2 is a conceptual diagram illustrating a battery monitoring system according to some embodiments of the present invention.
  • FIG. 3 is a graph of radiation according to temperature showing an example of a first wavelength band and a second wavelength band of the battery monitoring system of FIG. 2.
  • FIG. 4 is a graph showing an example of an electrical signal processed by a control unit of the battery monitoring system of FIG. 2.
  • FIG. 5 is a conceptual diagram illustrating a battery monitoring system according to some other embodiments of the present invention.
  • FIG. 6 is a graph of radiation according to temperature showing an example of a first wavelength band, a second wavelength band, and a third wavelength band of the battery monitoring system of FIG. 5.
  • FIG. 1 is a conceptual diagram illustrating the principle of the present invention.
  • the present invention uses the characteristics of radiation by wavelength band generated from a hot blackbody, and as shown in FIG. 1(a), it occurs in a general high-temperature blackbody. Radiation rays for each wavelength band form a spectrum of a specific pattern for each wavelength band.
  • FIG. 2 is a conceptual diagram illustrating a battery monitoring system 100 according to some embodiments of the present invention
  • FIG. 3 is a first wavelength band A1 and a second wavelength band A2 of the battery monitoring system 100 of FIG. 2. It is a radiation graph according to temperature showing an example.
  • the battery monitoring system 100 includes a first detection unit 10, a second detection unit 20, and a control unit 40. It may include.
  • the first detection unit 10 is capable of detecting the radiation L1 of the first wavelength band A1 generated from the battery 1, and is more specifically
  • the first detection unit 10 includes a first radiation sensing element 11 spaced apart from the battery 1 in a non-contact manner, and a radiation L1 and a second radiation of the first wavelength band A1.
  • the radiation L1 of the first wavelength band A1 and the radiation L2 of the second wavelength band A2 so that all of the radiation L2 of the wavelength band A2 can reach the first radiation sensing element 11 It may include a first filter 12 capable of passing all of the.
  • the second detection unit 10 includes radiation of the second wavelength band A2 absorbed by the first gas that may be generated as a precursor when the battery explodes.
  • the second detection unit 20 includes a second radiation sensing element 21 and the second radiation sensing element 21 spaced apart from the battery 1 in a non-contact manner.
  • the radiation L1 of the first wavelength band A1 is blocked so that only the radiation L2 of the wavelength band A2 can reach the second radiation sensing element 21, and the radiation of the second wavelength band A2 ( L2) may include a second filter 22 that can pass.
  • a window W or a filter window may be installed at least in part so that the radiation L1 of the first wavelength band A1 and the radiation L2 of the second wavelength band A2 can be emitted.
  • the window W or the filter window may be installed in a battery case or the like so that the internal material of the battery 1 does not leak to the outside, and may be a transparent window or various bands capable of passing at least a specific band of radiation.
  • a pass filter, a low pass filter, a high pass filter, etc. can all be applied.
  • such a window or filter window is not necessarily required, and various types of projection ray materials may be applied, such as making the entire case of a window or filter window material, or making the entire case so that radiant light can be emitted.
  • a device capable of detecting radiation such as the first radiation sensing element 11 or the second radiation sensing element 21, is a passive signal detection method that does not require a separate light source.
  • Various types of optical sensors, thermal wavelength cameras, image sensors, etc. that can detect an image can be applied.
  • the first radiation sensing element 11 and the second radiation sensing element 21 are shown separately for convenience, but may be integrated into a single element.
  • the first wavelength band A1 is 5.5 micrometers to 9 micrometers and 12 micrometers to 14 micrometers.
  • the second wavelength band A2 may include 9 micrometers to 12 micrometers.
  • the first filter 12 shown in FIG. 2 is 5.5 micrometers to pass both the radiation L1 of the first wavelength band A1 and the radiation L2 of the second wavelength band A2.
  • a band pass filter, a low pass filter, a high pass filter, etc. capable of passing a relatively wide wavelength band of 14 micrometers may be applied.
  • the second filter 22 shown in FIG. 2 blocks the radiation L1 of the first wavelength band A1 and allows the radiation L2 of the second wavelength band A2 to pass.
  • a band pass filter, a low pass filter, a high pass filter, etc. capable of passing a relatively narrow wavelength band of micrometers to 12 micrometers may be applied.
  • Such a filter may be an optical filter including a coating layer or a dye layer having an absorption rate or transmittance by wavelength substantially matching or similar to the absorption rate or transmittance by wavelength.
  • such a filter may be formed by inserting at least one or more films capable of absorbing or transmitting light of a specific wavelength band.
  • the film may be a silicon, Germanium, GaAs wafer optically coated to select a wavelength in a required wavelength band, or a film made of PE, PS, or PP containing a selected dye.
  • FIG. 4 is a graph showing an example of an electrical signal processed by the controller 40 of the battery monitoring system 100 of FIG. 2.
  • the control unit 40 includes the electric signal generated from the first sensing unit 10 and the electrical signal generated from the second sensing unit 20.
  • a notification signal can be generated, and for example, it can be applied both when an electrical signal detected in the 10.4 micrometer wavelength band is absorbed like a first dotted line or scattered like a second dotted line.
  • FIGS. 1 to 4 illustrate a case where the first gas includes a C 2 H 4 gas component, and although not shown, if the first gas includes a CO 2 gas component, the first gas One wavelength band may include 1 micrometer to 3 micrometers and 6 micrometers to 14 micrometers, and the second wavelength band may include 3 micrometers to 6 micrometers.
  • FIG. 5 is a conceptual diagram illustrating a battery monitoring system 200 according to some other embodiments of the present invention
  • FIG. 6 is a first wavelength band A1 and a second wavelength band A2 of the battery monitoring system 200 of FIG. 5.
  • a radiation graph according to temperature showing an example of the third wavelength band A3.
  • the battery monitoring system 200 includes a first sensing unit 10, a second sensing unit 20, and a third sensing unit. It may include (30) and a control unit (40).
  • first sensing unit 10 and the second sensing unit 20 may be the same as or similar to those of FIGS. 1 to 4 described above, and a detailed description thereof will be omitted.
  • the third sensing unit 30 is a radiation L3 of the third wavelength band A3 absorbed by a second gas that may be generated as a precursor when the battery explodes. ), and more specifically, for example, the third sensing unit 30 includes a third radiation sensing element 31 spaced apart from the battery 1 in a non-contact manner, and the third wavelength band ( The radiation L1 of the first wavelength band A1 and the radiation L2 of the second wavelength band A2 are blocked so that only the radiation L3 of A3) reaches the third radiation sensing element 31.
  • a third filter 32 capable of passing the radiation L3 of the third wavelength band A3 may be included.
  • the first wavelength band A1 is 1 micrometer to 3 microns.
  • the second wavelength band A2 comprises 9 micrometers to 12 micrometers
  • the third wavelength band A3 is 3 micrometers. It may comprise a meter to 6 micrometers.
  • the third filter 32 blocks the radiation L1 of the first wavelength band A1 and the radiation L2 of the second wavelength band A2, and the second A band pass filter, a low pass filter, a high pass filter, etc. capable of passing through a relatively narrow wavelength band of 3 micrometers to 6 micrometers to allow the radiation L3 of the wavelength band A3 to pass may be applied.
  • control unit 40 according to the ratio of the electrical signal generated from the first sensing unit 10 and the electrical signal generated from the third sensing unit 30, when the ratio is out of the normal value, the notification signal Can occur.
  • the precursor gases that may be generated from the battery 1 can be detected for each type, thereby improving detection accuracy and preventing explosions of various types of batteries in advance.
  • the present invention includes a battery monitoring system as well as a battery monitoring method.
  • the battery monitoring method includes The steps of detecting the radiation L1 of the first wavelength band A1, the step of sensing the radiation L2 of the second wavelength band A2 absorbed by the first gas that may be generated as a precursor when the battery explodes, and the According to a ratio of an electric signal generated by the first detection unit 10 and an electric signal generated by the second detection unit 20, generating a notification signal when the ratio exceeds a normal value.
  • the present invention while maintaining the function of the battery, it detects the occurrence of specific gas generated inside the battery as a precursor of battery explosion, determines the risk of explosion of the battery, and prevents the explosion.
  • Follow-up measures that can be taken can be easily carried out.

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Emergency Management (AREA)
  • Human Computer Interaction (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne un système et un procédé de surveillance de pile qui permet de prévenir des accidents par la détection d'avertissements d'une explosion de pile, le système comportant : une première unité de détection pouvant détecter des rayonnements d'une première bande de longueur d'onde, générée par une pile ; une seconde unité de détection pouvant détecter des rayonnements d'une seconde bande de longueur d'onde, absorbée par un premier gaz qui peut être généré en tant qu'avertissement de l'explosion de la pile ; une unité de commande capable de générer un signal d'alarme lorsque le rapport d'un signal électrique généré par la première unité de détection à un signal électrique généré par la seconde unité de détection s'écarte d'une valeur normale.
PCT/KR2020/009850 2019-08-27 2020-07-29 Système et procédé de surveillance de pile WO2021040246A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0105023 2019-08-27
KR1020190105023A KR102272094B1 (ko) 2019-08-27 2019-08-27 배터리 모니터링 시스템 및 방법

Publications (1)

Publication Number Publication Date
WO2021040246A1 true WO2021040246A1 (fr) 2021-03-04

Family

ID=74684258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/009850 WO2021040246A1 (fr) 2019-08-27 2020-07-29 Système et procédé de surveillance de pile

Country Status (2)

Country Link
KR (1) KR102272094B1 (fr)
WO (1) WO2021040246A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621818B2 (ja) * 1984-08-16 1994-03-23 サンタ・バ−バラ・リサ−チ・センタ− マイクロプロセツサ制御の火災探知システム
JP2000123887A (ja) * 1998-10-19 2000-04-28 Nikkiso Co Ltd リチウムイオン二次電池における異常警告装置
JP2005345146A (ja) * 2004-05-31 2005-12-15 Tdk Corp 炭酸ガス濃度測定装置、炭酸ガス濃度測定方法、ならびに燃焼機器
JP2011089944A (ja) * 2009-10-26 2011-05-06 Shimadzu Corp 燃料電池反応計測装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073111B1 (fr) * 1981-08-20 1985-07-17 Kidde-Graviner Limited Détection et suppression d'incendie et d'explosion
KR20130123398A (ko) * 2010-12-03 2013-11-12 다우 아그로사이언시즈 엘엘씨 에나민의 제조 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621818B2 (ja) * 1984-08-16 1994-03-23 サンタ・バ−バラ・リサ−チ・センタ− マイクロプロセツサ制御の火災探知システム
JP2000123887A (ja) * 1998-10-19 2000-04-28 Nikkiso Co Ltd リチウムイオン二次電池における異常警告装置
JP2005345146A (ja) * 2004-05-31 2005-12-15 Tdk Corp 炭酸ガス濃度測定装置、炭酸ガス濃度測定方法、ならびに燃焼機器
JP2011089944A (ja) * 2009-10-26 2011-05-06 Shimadzu Corp 燃料電池反応計測装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KIM JONG-HEON, LEE CHAN-JOO: "Three - Harmful Gas Detection Sensor Module using Non-Dispersive Infrared (NDIR) Technology", JOURNAL OF KOREA INFORMATION AND COMMUNICATIONS SOCIETY, THE, KOREA INSTITUTE OF COMMUNICATION SCIENCES, KOREA, vol. 42, no. 8, 31 August 2017 (2017-08-31), Korea, pages 1591 - 1598, XP055785819, ISSN: 1226-4717, DOI: 10.7840/kics.2017.42.8.1591 *

Also Published As

Publication number Publication date
KR20210025255A (ko) 2021-03-09
KR102272094B1 (ko) 2021-07-02

Similar Documents

Publication Publication Date Title
US20150132616A1 (en) Method and device for triggering at least one safety function in the event of a state of an electrochemical store that is critical with regard to safety, and electrochemical energy storage system
WO2021075759A1 (fr) Appareil de détection d'incendie d'une batterie de véhicule et procédé de détection
WO2021015436A1 (fr) Dispositif de détection d'incendie de batterie de véhicule et procédé de détection
US3609364A (en) Hydrogen fire detection system with logic circuit to analyze the spectrum of temporal variations of the optical spectrum
CN107469257A (zh) 一种车用电池箱预警灭火系统及方法
WO2014077536A1 (fr) Appareil et procédé de prévention d'incendie de batterie au lithium
GB2485638A (en) Device and method of determining safety in a battery pack
WO2021040246A1 (fr) Système et procédé de surveillance de pile
KR20200096889A (ko) 일반 화재와 리튬이온 배터리의 화재를 감지하는 적외선 불꽃 감지기
KR20200143929A (ko) 배터리 셀의 내부 이상을 진단하는 방법 및 이를 적용한 배터리 팩
KR20220156306A (ko) 배터리 관리 시스템 및 방법
CN206214602U (zh) 一种车用电池箱探测灭火装置
EP0119264B1 (fr) Detecteur de feu a discrimination avec capacite de derogation thermique
WO2020226303A1 (fr) Élément de batterie pour détection de danger
WO2021071217A1 (fr) Bloc-batterie comprenant un dispositif de détection de génération de gaz utilisant la diffusion de mie, et procédé de détection de gaz l'utilisant
CN215182335U (zh) 一种明火检测系统
CN218824615U (zh) 一种锂电池热失控预警复合传感器
CN208028184U (zh) 一种动力电池热失控扩散预警系统
WO2014157973A1 (fr) Systeme d'alarme a distance pour un recipient d'article dangereux utilisant une unite de communication sans fil pour un reseau de communication mobile
CN218824616U (zh) 一种锂电池状态监测传感器
CN105913606A (zh) 一种利用红外线的火花检测方法与系统
KR20200019532A (ko) 일반 화재와 리튬이온 배터리의 화재를 감지하는 적외선 불꽃 감지기
CN207426062U (zh) 一种电池组火灾探测装置
KR101895987B1 (ko) 방폭형 카메라 장치
WO2024117517A1 (fr) Composition de microcapsule d'extinction d'incendie à un stade précoce

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20858199

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20858199

Country of ref document: EP

Kind code of ref document: A1