Multi-source information fusion thermal runaway composite detection device

Abstract

The utility model relates to the technical field of electrochemical energy storage system protection, in particular to a multi-source information fusion thermal runaway composite detection device which comprises a shell, a cover body is arranged on the upper cover of the shell, a detection cavity is arranged in the shell, and a sound detection assembly is further arranged in the shell outside the detection cavity. One side of the shell is communicated with an air inlet pipe, and the air inlet pipe is communicated with the detection cavity; the sound detection assembly comprises a positioning installation cylinder, a bendable pipe is fixedly installed on the positioning installation cylinder, and a microphone is fixed to the other end of the bendable pipe. The microphone is electrically connected with a signal processing module, and the signal processing module is connected with a controller. According to the utility model, the sound detection assembly, the particle detection assembly, the temperature sensor and the gas sensor are arranged in the device, so that the problem that the safety monitoring and early warning device in the energy storage power station in the prior art cannot detect the chemical reaction of the lithium ion battery in place is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrochemical energy storage system protection technical field especially relates to a multi -source information fusion's thermal runaway composite detection device. BACKGROUND

[0002] With the development of renewable energy and the popularity of electric vehicles, electrochemical energy storage technology plays an increasingly important role in modern energy management systems. However, electrochemical energy storage systems, especially lithium-ion batteries, have a risk of thermal runaway, which not only may lead to battery performance degradation, but also may cause safety accidents, seriously affecting personal safety and property safety.

[0003] Traditional monitoring methods mainly rely on temperature sensors and voltage monitoring. Although these methods can provide monitoring information to some extent, they often lack the ability to provide timely warning of potential dangers. In recent years, with the advancement of sensor technology, various signal monitoring methods have been proposed, therefore, it is particularly important to develop an effective thermal runaway monitoring device that can more comprehensively reflect the safety status of energy storage power stations.

[0004] Chinese patent CN216852010U discloses a distributed monitoring device and an energy storage power station safety monitoring and early warning system, relating to the field of lithium-ion battery energy storage power station safety online monitoring. The distributed monitoring device includes a device housing, an optical detection assembly, a gas detection assembly, and a active air suction assembly inside the device housing. The optical detection assembly is an optical sensor for detecting the concentration of nano particles in the air. The gas detection assembly is a gas sensor for detecting the content of characteristic gas in the environment air of the energy storage prefabricated cabin. The active air suction assembly is a air pump for sucking air outside the device housing into the optical detection assembly and the gas detection assembly. The air pump is located at the center of the device housing. The lower surface of the device housing is provided with an explosion-proof grille, and the upper surface of the device housing is provided with a communication interface. The utility model can effectively realize the safety monitoring and early warning of lithium-ion battery energy storage power station.

[0005] The above-mentioned patent uses optical detection assembly, gas detection assembly and active air suction assembly to detect the gas and light of the energy storage power station. However, when chemical reactions occur inside the lithium-ion battery, some characteristics may not be detected by gas and light detection. In order to better monitor the safety of the energy storage power station, further improvement is needed. SUMMARY

[0006] In view of the deficiencies of the prior art, the utility model discloses a kind of multi-source information fusion's thermal runaway composite detection device, by being provided with sound detection component, particle detection component, temperature sensor and gas sensor in device, the problem that safety monitoring early warning device in energy storage power station in prior art cannot be detected is solved, further by adding sound detection, practical guarantee is provided for the safety monitoring of energy storage power station.

[0007] In order to achieve the above object, the utility model provides the following technical scheme:

[0008] A kind of multi-source information fusion's thermal runaway composite detection device, including shell, lid is equipped on the shell, detection cavity is equipped in the shell, sound detection component is also equipped in the shell outside detection cavity;The shell side is communicated with air inlet pipe, the air inlet pipe is communicated with detection cavity, air pump is installed on the air inlet pipe;

[0009] The sound detection component includes positioning installation cylinder, at least one bendable pipe is fixedly installed on the positioning installation cylinder, one end of the bendable pipe is fixed with the positioning installation cylinder, the other end of the bendable pipe is fixed with microphone;The microphone is electrically connected with signal processing module, the signal processing module is connected with controller, the controller is also connected with power module.

[0010] Preferably, particle detection component and gas sensor are equipped in the detection cavity, the particle detection component and gas sensor are electrically connected with controller, the controller is also electrically connected with infrared temperature sensor, and the infrared temperature sensor is installed on the side wall of shell.

[0011] Preferably, the particle detection component includes light source emitter installed on one side wall of detection cavity and particle sensor installed on the other side wall of detection cavity, the light source emitter is oppositely arranged with the particle sensor, the air outlet of the air inlet pipe is located between the light source emitter and the particle sensor, the detection cavity is also provided with air outlet, and the particle sensor and the light source emitter are electrically connected with detection circuit board, and the detection circuit board is electrically connected with the controller.

[0012] Preferably, the gas sensor is located above the particle sensor, and a sealing cover is further formed in the detection cavity.

[0013] Preferably, a plurality of reflecting plates are further arranged in the detection cavity, and the reflecting plates are fixed on the inner walls on both sides of the particle sensor to reflect the light emitted by the light source emitter.

[0014] Preferably, a through slot is formed on the side wall of the shell, and a convex strip is arranged on the two sides of the through slot; a sliding cover is arranged on the through slot, and a concave strip is arranged on the two sides of the sliding cover and slidably matched with the convex strip; a circular groove is arranged on the inner side of the top and bottom of the convex strip, and a circular protrusion matched with the circular groove is arranged on the inner side of the bottom of the concave strip, and the opening and closing of the sliding cover are limited through the cooperation of the circular groove and the circular protrusion.

[0015] Preferably, a communication interface module is arranged in the shell and electrically connected with the controller; a communication interface slot corresponding to the communication interface module is formed on the side wall of the shell, and the communication interface module is inserted into the communication interface slot.

[0016] Preferably, a filter screen is arranged on the air inlet of the air inlet pipe.

[0017] Preferably, a display screen module is fixed on the bottom surface of the cover body, a display screen buckle interface is formed on the cover body, the top of the display screen module is buckled in the display screen buckle interface, and the display screen module is electrically connected with the controller.

[0018] Preferably, a control button is further arranged on the cover body and electrically connected with the controller, and the controller is further electrically connected with a buzzer.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] (1) The sound detection assembly is arranged, in use, the sliding cover is slid, the through slot is opened, the microphone is extended out of the shell through the bendable pipe, the microphone can be positioned at different directions, and can be positioned at the safety valve of the battery core, the microphone is extended out of the shell, the sound detection effect of the microphone is enhanced, the characteristic sound signals emitted by the battery in the early stage of thermal runaway are monitored in real time through the high-sensitivity microphone, the sound signals are processed by the signal processing unit, and finally transmitted to the controller, the detection is helpful for monitoring the sound signals emitted by the gas release and pressure change caused by the chemical reaction in the battery, effective linkage measures are taken, the spread of the battery thermal runaway in the energy storage power station is timely prevented, and the occurrence of fire is prevented; when not in use, the bendable pipe and the microphone can be stored in the shell, the circular groove on the inner side of the bottom of the convex strip is matched with the circular protrusion on the inner side of the bottom of the concave strip through the sliding cover, the closing of the through slot is limited, and the storage work is completed.

[0021] (2) The particle detection assembly of the utility model irradiates the light emitted by the light source emitter in the gas entering the detection cavity, the particles produced by the factors such as electrical equipment insulation aging, fault, side reaction and chemical reaction in the charging and discharging process are dispersed in the gas, the light beam is scattered by these particles, the particle sensor receives the scattered light signal and measures the concentration and size of the particulate matter in the air through the optical or electronic mode, and the data is transmitted to the controller, and the detection helps to monitor the solid characteristic product of material overheating decomposition, and realizes the accurate monitoring function.

[0022] (3) The device of the utility model provides practical guarantee for the safety monitoring of the energy storage power station through the real-time monitoring of temperature, gas, particles and sound, and prevents the occurrence of thermal runaway. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is the overall structure schematic diagram of the thermal runaway composite detection device of the utility model of multi-source information fusion;

[0024] Fig. 2 It is the cross-sectional structure schematic diagram of the thermal runaway composite detection device of the utility model of multi-source information fusion;

[0025] Fig. 3 It is the explosion structure schematic diagram of the thermal runaway composite detection device of the utility model of multi-source information fusion;

[0026] Fig. 4 It is the structure cross-sectional schematic diagram of the sliding cover of the thermal runaway composite detection device of the utility model of multi-source information fusion.

[0027] In the drawing: wherein: 100, shell;200, detection cavity;300, sound detection assembly;400, cover;500, air inlet pipe;600, controller;700, power module;800, air pump;900, infrared temperature sensor;110, through slot;120, convex strip;130, sliding cover;140, concave strip;150, circular groove;160, round convex;170, communication interface slot;210, particle detection assembly;220, gas sensor;230, gas outlet;211, light source emitter;212, particle sensor;213, detection circuit board;214, sealing cover;215, reflector;310, positioning installation cylinder;320, bendable pipe;330, microphone;340, signal processing module;410, display screen buckle interface;420, control button;430, display screen module;610, communication interface module. DETAILED DESCRIPTION

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Example

[0030] like Figs. 1-4 As shown, a multi-source information fusion thermal runaway composite detection device includes a housing 100, a cover 400 on the housing 100, a detection cavity 200 inside the housing 100, and a sound detection component 300 located outside the detection cavity 200 inside the housing 100; an air inlet pipe 500 is connected to one side of the housing 100, the air inlet pipe 500 is connected to the detection cavity 200, and an air pump 800 is installed on the air inlet pipe 500;

[0031] The sound detection component 300 includes a positioning mounting cylinder 310, on which at least one bendable tube 320 is fixedly mounted. One end of the bendable tube 320 is fixed to the positioning mounting cylinder 310, and the other end of the bendable tube 320 is fixed to a microphone 330. The microphone 330 is electrically connected to a signal processing module 340, which is connected to a controller 600. The controller 600 is also connected to a power supply module 700.

[0032] The air pump 800 helps the air intake pipe 500 draw gas from the energy storage power station into the detection chamber 200 for detection. The sound detection component 300 is used to detect the gas generated by the chemical reaction inside the battery in the energy storage power station and the sound signals generated when the pressure is released. Specifically, the microphone 330 collects these sounds, and the signal processing module 340 filters, amplifies, and decodes them to extract key feature information, improve the recognition rate of specific sounds, ensure that the sound of the safety valve opening can be accurately distinguished, and calculate the location of the sound source through the signal processing module 340. Finally, the signal is transmitted to the controller 600. When thermal runaway is about to occur, the controller 600 issues an early warning to remind the staff to take action. It should be noted that the signal processing module 340 is a digital signal processor.

[0033] In this embodiment, the detection cavity 200 is provided with a particle detection component 210 and a gas sensor 220. Both the particle detection component 210 and the gas sensor 220 are electrically connected to the controller 600. The controller 600 is also electrically connected to an infrared temperature sensor 900, which is mounted on the side wall of the housing 100.

[0034] The particle detection assembly 210 monitors the particle concentration and size in the gas, the gas sensor 220 detects CO, VOC, H2 and other substances in the gas, the infrared temperature sensor 900 monitors the temperature in the energy storage power station, the controller 600 is a PLC controller, and the controller 600 is used to receive the data detected by the particle detection assembly 210, the gas sensor 220 and the infrared temperature sensor 900, and determine whether there is thermal runaway through various data, and take corresponding control measures when there is thermal runaway.

[0035] In the embodiment, the particle detection assembly 210 includes a light source emitter 211 mounted on one side wall of the detection cavity 200, and a particle sensor 212 mounted on the other side wall of the detection cavity 200, the light source emitter 211 is arranged opposite to the particle sensor 212, the gas outlet of the gas inlet pipe 500 is located between the light source emitter 211 and the particle sensor 212, the detection cavity 200 is also provided with a gas outlet 230, the particle sensor 212 and the light source emitter 211 are electrically connected with a detection circuit board 213, and the detection circuit board 213 is electrically connected with the controller 600.

[0036] The particle detection assembly 210 irradiates the light emitted by the light source emitter 211 in the gas entering the detection cavity 200, and the particles generated by the factors such as insulation aging, failure of the battery and equipment in the battery compartment, and side reactions and chemical reactions in the charging and discharging process are dispersed in the gas, the light beam is scattered by the particles, the particle sensor 212 receives the scattered light signal, converts it into an electrical signal data through the detection circuit board 213, and transmits the data to the controller 600, which helps to monitor the solid characteristic products of material overheating decomposition, and realizes the precise monitoring function. Specifically, the light emitted by the light source emitter 211 is laser or ultraviolet light.

[0037] In the embodiment, the gas sensor 220 is located above the particle sensor 212, and the detection cavity 200 is also provided with a sealing cover 214.

[0038] The gas sensor 220 is arranged above the particle sensor 212, which facilitates the gas sensor 220 to better detect the gas entering the detection cavity 200, and the gas entering the detection cavity 200 will not be dispersed immediately, which helps the gas sensor 220 and the particle sensor 212 to better detect.

[0039] In the embodiment, the detection cavity 200 is also provided with a plurality of reflecting plates 215, and the reflecting plates 215 are fixed on the inner walls on both sides of the particle sensor 212 to reflect the light emitted by the light source emitter 211.

[0040] The light-reflecting plate 215 reflects the scattered light back to the particle sensor 212, which can enhance the intensity of the light signal, improve the sensitivity and accuracy of particle detection, and help collect more scattered light to more accurately measure the particle concentration in the air.

[0041] In the embodiment, a through slot 110 is formed on the side wall of the shell 100, and a convex strip 120 is arranged on both sides of the through slot 110; a sliding cover 130 is arranged on the through slot 110, and a concave strip 140 is arranged on both sides of the sliding cover 130, the concave strip 140 and the convex strip 120 are slidably matched with each other; a circular groove 150 is arranged on the inner top and bottom of the convex strip 120, and a circular protrusion 160 matched with the circular groove 150 is arranged on the inner bottom of the concave strip 140, and the opening and closing of the sliding cover 130 are limited by the matching of the circular groove 150 and the circular protrusion 160.

[0042] In order to better detect the sound characteristics of the microphone 330, the microphone 330 is extended out of the shell 100 through the bendable tube 320, and the microphone 330 can be positioned at different positions, or can be positioned at the safety valve of the battery cell, and the characteristic sound signal emitted in the early stage of battery thermal runaway can be monitored in real time and online through the high-sensitivity microphone 330.

[0043] Specifically, in use, the sliding cover 130 is slid to open the through slot 110, and the circular groove 150 on the inner top of the convex strip 120 and the circular protrusion 160 on the inner bottom of the concave strip 140 are matched to limit the opening of the through slot 110, so that the microphone 330 and the bendable tube 320 can be smoothly extended out of the shell 100 to better collect sound signals; when the device is not in use, the bendable tube 320 and the microphone 330 can be stored in the shell 100, the sliding cover 130 is slid to match the circular groove 150 on the inner bottom of the convex strip 120 and the circular protrusion 160 on the inner bottom of the concave strip 140 to limit the closing of the through slot 110, and the storage work is completed.

[0044] In the embodiment, a communication interface module 610 is installed in the shell 100, and the communication interface module 610 is electrically connected with the controller 600; a communication interface slot 170 corresponding to the communication interface module 610 is formed on the side wall of the shell 100, and the communication interface module 610 is inserted into the communication interface slot 170.

[0045] The communication interface module 610 can be connected with external equipment, and real-time monitoring and data sharing can be realized through the external equipment, so as to further enhance the safety management capability of the battery pack.

[0046] In the embodiment, a filter screen is arranged on the air inlet of the air inlet pipe 500.

[0047] The filter screen is used for filtering the gas entering the detection cavity 200 to filter out impurities in the gas.

[0048] In the embodiment, the display screen module 430 is fixed on the bottom surface of the cover 400, the display screen buckle interface 410 is arranged on the cover 400, the top of the display screen module 430 is buckled in the display screen buckle interface 410, and the display screen module 430 is electrically connected with the controller 600.

[0049] In the embodiment, the control button 420 is further arranged on the cover 400, the control button 420 is electrically connected with the controller 600, and the controller 600 is further electrically connected with a buzzer.

[0050] The display screen module 430 displays various data detected in the interior, and can be adjusted and viewed through the control button 420; when data is abnormal, the buzzer is sounded to remind the staff to handle in time, so that the thermal runaway is prevented.

[0051] The working principle of the thermal runaway composite detection device of the multi-source information fusion is as follows:

[0052] In use, the sliding cover 130 is slid to open the through slot 110, and the circular groove 150 on the inner top of the convex strip 120 is matched with the circular convex 160 on the inner bottom of the concave strip 140 to limit the opening of the through slot 110, so that the microphone 330 is smoothly extended out of the shell 100 through the bendable pipe 320, and the microphone 330 is positioned at different directions or at the safety valve of the battery cell.

[0053] The opening device is used for sucking the gas into the detection cavity 200 through the air pump 800 on the air inlet pipe 500, the particle sensor 212 detects the particles in the gas under the light emitted by the light source emitter 211, measures the concentration and size of the particulate matters in the air, and the gas sensor 220 detects the entering gas to detect CO, VOC, H2 and other substances in the gas; the infrared temperature sensor 900 monitors the temperature in the energy storage power station, and each sensor transmits the detected data to the controller 600.

[0054] The microphone 330 collects the sound signals generated by the gas and pressure release generated by the chemical reaction in the battery in the energy storage power station, and processes the signals through the signal processing module 340 to improve the recognition rate of specific sound, ensure that the sound of the safety valve opening can be accurately distinguished, and the position of the sound source is located through the signal processing module 340, and finally transmitted to the controller 600.

[0055] The controller 600 judges whether there is data abnormality according to the data of the detected gas, temperature, particles and sound, and controls the buzzer to buzz to remind the staff to handle in time once the abnormality occurs.

[0056] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent substitution or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A multi-source information fusion thermal runaway composite detection device comprising a shell (100), characterized in that: The shell (100) is provided with a cover (400), the shell (100) is provided with a detection cavity (200), and the shell (100) is further provided with a sound detection assembly (300) outside the detection cavity (200); one side of the shell (100) is communicated with an air inlet pipe (500), the air inlet pipe (500) is communicated with the detection cavity (200), and the air inlet pipe (500) is provided with an air pump (800); The sound detection assembly (300) comprises a positioning installation cylinder (310), at least one bendable pipe (320) is fixedly installed on the positioning installation cylinder (310), one end of the bendable pipe (320) is fixed with the positioning installation cylinder (310), and the other end of the bendable pipe (320) is fixedly provided with a microphone (330); the microphone (330) is electrically connected with a signal processing module (340), the signal processing module (340) is connected with a controller (600), and the controller (600) is further connected with a power module (700). 2.The thermal runaway composite detection device of multi-source information fusion according to claim 1, characterized in that: The detection cavity (200) is provided with a particle detection assembly (210) and a gas sensor (220), the particle detection assembly (210) and the gas sensor (220) are electrically connected with the controller (600), and the controller (600) is further electrically connected with an infrared temperature sensor (900), and the infrared temperature sensor (900) is installed on the side wall of the shell (100). 3.The thermal runaway composite detection device of multi-source information fusion according to claim 2, characterized in that: The particle detection assembly (210) comprises a light source emitter (211) installed on one side wall of the detection cavity (200) and a particle sensor (212) installed on the other side wall of the detection cavity (200), the light source emitter (211) and the particle sensor (212) are oppositely arranged, the air outlet of the air inlet pipe (500) is located between the light source emitter (211) and the particle sensor (212), the detection cavity (200) is further provided with an air outlet (230), and the particle sensor (212) and the light source emitter (211) are electrically connected with a detection circuit board (213), and the detection circuit board (213) is electrically connected with the controller (600). 4.The thermal runaway composite detection device of multi-source information fusion according to claim 2, characterized in that: The gas sensor (220) is located above the particle sensor (212), and the detection cavity (200) is further provided with a sealing cover (214).

5. The multi-source information fusion thermal runaway composite detection device according to claim 2, characterized in that: The detection cavity (200) is further provided with a plurality of reflecting plates (215), and the reflecting plates (215) are fixed on the inner walls on the two sides of the particle sensor (212) to reflect the light emitted by the light source emitter (211). 6.The thermal runaway composite detection device of multi-source information fusion according to claim 1, characterized in that: The shell (100) side wall is provided with a through slot (110), and the both sides of the through slot (110) are provided with convex strips (120); the through slot (110) is provided with a sliding cover (130), and the both sides of the sliding cover (130) are provided with recessed strips (140), which are slidably matched with the convex strips (120); the inner side of the convex strip (120) is provided with a circular groove (150) at the top and the bottom, and the inner side of the recessed strip (140) is provided with a circular convex (160) matched with the circular groove (150), and the opening and closing of the sliding cover (130) is limited by the cooperation of the circular groove (150) and the circular convex (160). 7.The thermal runaway composite detection device of multi-source information fusion according to claim 1, characterized in that: The shell (100) is provided with a communication interface module (610), and the communication interface module (610) is electrically connected with the controller (600); the shell (100) side wall is provided with a communication interface slot (170) corresponding to the communication interface module (610), and the communication interface module (610) is inserted into the communication interface slot (170). 8.The thermal runaway composite detection device of multi-source information fusion according to claim 1, characterized in that: The air inlet of the air inlet pipe (500) is provided with a filter screen. 9.The thermal runaway composite detection device of multi-source information fusion according to claim 1, characterized in that: The bottom surface of the cover body (400) is fixed with a display screen module (430), and the cover body (400) is provided with a display screen buckle interface (410), and the top of the display screen module (430) is buckled in the display screen buckle interface (410), and the display screen module (430) is electrically connected with the controller (600). 10.The thermal runaway composite detection device of multi-source information fusion according to claim 1, characterized in that: The cover body (400) is also provided with a control button (420), and the control button (420) is electrically connected with the controller (600), and the controller (600) is also electrically connected with a buzzer.

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