CN211528633U - Integrated testing device for thermal runaway characteristic of energy storage battery - Google Patents
Integrated testing device for thermal runaway characteristic of energy storage battery Download PDFInfo
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- CN211528633U CN211528633U CN201922194651.XU CN201922194651U CN211528633U CN 211528633 U CN211528633 U CN 211528633U CN 201922194651 U CN201922194651 U CN 201922194651U CN 211528633 U CN211528633 U CN 211528633U
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Abstract
The utility model discloses an integrated testing device for thermal runaway characteristics of energy storage batteries, which comprises a centralized control device, a test chamber, a heat insulation chamber and a gas detection unit, wherein the heat insulation chamber and the gas detection unit are positioned inside the test chamber; the heating unit comprises an environment heating device and a battery heating device, and the temperature detection unit comprises an environment temperature detection device and a battery temperature detection device; the body of the heat insulation cabin is provided with a gas channel. The utility model discloses an integration testing arrangement adopts adiabatic design, combines high-efficient convenient test method, realizes the high accuracy integration test and the analysis of energy storage battery thermal runaway characteristic, masters energy storage battery thermal runaway key characteristic, provides data support for energy storage power station thermal runaway risk early warning, promotes energy storage power station safe temperature operation level.
Description
Technical Field
The utility model relates to a testing arrangement in electrochemistry energy storage field especially relates to an energy storage battery thermal runaway characteristic's integration testing arrangement.
Background
Along with the increasingly prominent energy problem, the electrochemical energy storage power station is increasingly widely applied. The lithium ion battery has received wide attention due to its advantages of high working voltage, high energy density, high specific capacity, long cycle life and environmental friendliness, and the energy storage system matched with the lithium ion battery has become the mainstream choice for power grid energy storage.
Lithium ion batteries have considerable safety problems, mainly due to their intrinsic heat-generating properties. The thermal runaway of the energy storage battery has many factors, the heat generation of the battery is aggravated in the operation process due to the consistency difference of the battery, the aging and deterioration in the later period of the cycle, the increase of the internal resistance, the internal micro short circuit, the overcharge and the like, which are closely related to the intrinsic structure of the battery and the characteristics of battery materials (anode and cathode materials, a diaphragm, electrolyte and the like), and the heat generation change is also caused by the operation management mode (charge and discharge power, multiplying power and the like) of the battery. When heat generation is changed due to certain factors to cause the heat balance to be destroyed, and a process from quantitative change to qualitative change exists in the process that heat accumulation reaches thermal runaway, how to determine the critical condition of qualitative change and how to influence the key factors of the process are important.
Currently, most of lithium ion battery thermal runaway characteristic detection is to build an open thermal behavior analysis platform, and monitor and record temperature rise and images of a battery thermal runaway process by using a thermocouple, infrared camera shooting and video monitoring in a non-heat insulation environment; however, since the open platform exchanges heat with the external environment, a large difference exists between the monitored shell temperature and the actual temperature inside the battery cell, and the self heat generation amount of the battery cannot be accurately monitored. Meanwhile, the system and the external environment air are in convection, so that the loss of the characteristic gas part in the thermal runaway process is caused, and the characteristic gas cannot be accurately, qualitatively and quantitatively monitored. In addition, the adiabatic acceleration calorimeter in the current market can monitor the thermal parameter change of the battery thermal runaway process under an adiabatic condition, but because the monitoring instrument cannot tolerate high temperature in a cabin, the micro characteristic gas at the initial stage of thermal runaway cannot be sensed in real time under an adiabatic environment, and the thermal runaway characteristic analysis of the lithium ion battery and the design of the battery thermal runaway early warning system based on the development are seriously influenced.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: one of the purposes of the utility model is to provide an integration testing arrangement of energy storage battery thermal runaway characteristic, for realizing high accuracy integration test and the analysis of energy storage battery thermal runaway characteristic, master energy storage battery thermal runaway key characteristic, provide data support for energy storage power station thermal runaway risk early warning, promote energy storage power station safe temperature operation level.
The technical scheme is as follows: the utility model discloses an integrated testing arrangement of energy storage battery thermal runaway characteristic includes centralized control device, test chamber, the adiabatic cabin that is located the test chamber inside, gaseous detecting element is located adiabatic cabin outside, test chamber inside, is equipped with heating unit and temperature detecting element in the adiabatic cabin, and heating unit, temperature detecting element, gaseous detecting element all link to each other with centralized control device; the heating unit comprises an environment heating device and a battery heating device, and the temperature detection unit comprises an environment temperature detection device and a battery temperature detection device; the body of the heat insulation cabin is provided with a gas channel.
The centralized control device is used for setting a balance state to be achieved, the environment temperature detection device is used for detecting the environment temperature in the heat insulation cabin, and the battery temperature detection device is used for detecting the temperature of the battery to be detected; the environment temperature detection device and the battery temperature detection device can adopt thermocouples or other temperature detection devices commonly used in the prior art; when T isEnvironment(s)And TBattery with a battery cellThe difference value is within the set delta T, and the centralized control device controls the heating unit to stop heating; when T isEnvironment(s)And TBattery with a battery cellAnd after the difference value is larger than delta T, the centralized control device controls the heating unit to start heating.
The gas channel may be arranged at the top of the thermally insulated chamber to facilitate gas diffusion into the test chamber. The gas detection unit can accurately measure the trace characteristic gas components and the content of the battery to be measured in the very early stage in the thermal runaway process; and the gas detection unit is connected with the centralized control device.
Furthermore, an observation window is arranged on the cabin body of the heat insulation cabin, a video monitoring device is arranged on the outer side of the observation window and connected with the centralized control device, the video monitoring device records battery changes through the observation window and transmits the recorded battery change video to the centralized control device, and therefore a user can analyze the bulging, deformation and the like of the battery conveniently. The video monitoring device can adopt a visible light video monitor and an infrared video monitor, is arranged outside the observation window and inside the test chamber, can monitor the change of the battery in real time, and the observation window can adopt quartz glass.
Preferably, the gas detection unit comprises a plurality of gas detector series; each gas detector string group comprises a plurality of gas detectors and slide rails, the slide rails are transversely and longitudinally distributed along the inner wall of the test chamber, and the gas detectors are fixed on the slide rails. The gas detector can sensitively detect the gas production of the battery, when in use, the gas detector can slide on the slide rail according to the test requirement, and is fixed on the slide rail after the position is determined, so as to form a longitudinal and transverse gas detector series group and sense the specific gas production component and content in the thermal runaway process of the battery sample. The gas detectors are transversely and longitudinally arranged, so that the longitudinal propagation and transverse propagation speeds of characteristic gas can be measured, and the position installation of the detectors in the early warning system is guided.
Preferably, the test device further comprises a gas analysis device positioned outside the test chamber, and the gas analysis device is connected with the test chamber through a pipeline; the gas analysis device comprises a gas purifier, a gas collecting cylinder and a gas analyzer, a valve is arranged on a pipeline, and gas in the test chamber passes through the gas purifier and the gas collecting cylinder from the test chamber through the connected pipeline and then enters the gas analyzer. Gas analyzers can measure the composition and content of a gas, such as gas chromatographs; therefore, when the battery to be tested releases gas, the gas enters the connecting pipeline after entering the test chamber through the gas channel of the heat insulation chamber, and is finally detected and analyzed by the gas analyzer; therefore, the components and the content of the battery in the thermal runaway process can be obtained in real time, the secondary pollution of gas is avoided, and the detection efficiency and the detection precision are improved.
A great deal of white smoke is emitted in the thermal runaway process, and a great deal of electrolyte steam, smoke dust particles, CO and CO are contained in the white smoke2、CH4、H2And the like, the gas is mixed,and (4) extracting by a gas purification device, filtering out smoke dust particles, and introducing the residual gas into a chromatogram for gas-containing species analysis. Therefore, when the battery to be tested generates a large amount of smoke in the testing process, the gas purifier can be started to suck gas into the purifier, the purified gas without smoke particles enters the gas collecting cylinder through the connecting pipeline and then enters the gas analyzer through the connecting pipeline for real-time analysis and detection. The connecting pipeline can be provided with a valve, and the gas pipeline is controlled by opening and closing the valve.
Preferably, the video monitoring device is fixedly installed on a sliding rail, and the sliding rail is fixed on the inner wall of the test chamber. Similarly, the video monitoring device can slide on the sliding rail, and the position of the video monitoring device is adjusted according to actual needs when the video monitoring device is used and then is fixed on the sliding rail.
Preferably, the cabin body of the heat insulation cabin comprises an inner layer and an outer layer, wherein the inner layer is an explosion-proof steel plate layer, and the outer layer is a heat insulation layer. The heat insulation layer of the heat insulation cabin is a carbon aerogel high-temperature heat insulation composite material layer, the carbon aerogel high-temperature heat insulation composite material is adopted to be manufactured, the specific preparation method can refer to the patent application number CN201810162784.6, the composite material layer has extremely low heat conductivity and excellent heat insulation performance, the use temperature can reach 2200 ℃, and the use temperature is far higher than the highest temperature (about 800 ℃) in the cabin when a battery burns.
Preferably, the gas channel is arranged at the top of the heat-insulating cabin, so that gas is favorably emitted from the heat-insulating cabin to the interior of the test cabin;
preferably, the gas channel comprises a plurality of through holes, and the aperture of each through hole is 1-3 mm.
Preferably, the battery heating device comprises a heating plate, and the heating plate is U-shaped; the battery to be tested is inserted into the U-shaped heating plate for heating.
When the integrated testing device for the thermal runaway characteristic of the energy storage battery is used for testing, the battery to be tested is placed in the battery heating device in the heat insulation cabin, and the centralized control device controls the heating unit to heat and stop, so that the heat balance state is kept in the heat insulation cabin; the battery temperature detection device detects the temperature of the battery in real time and transmits the temperature to the centralized control device; along with the temperature rise of the battery, gas released by the battery enters the test chamber through a gas channel on the heat insulation chamber, and the gas detection unit detects the gas and transmits a detection result to the centralized control device. After the test is finished, the centralized control device controls the heating unit to stop heating, and the system can be closed after the cabin is naturally cooled.
The utility model discloses the principle: because the energy storage battery is easy to generate thermal runaway under the conditions of overcharge, overheating and short circuit, even a fire disaster is caused, and the safe and stable operation of the energy storage power station is seriously threatened. The thermal runaway characteristic of the energy storage battery comprises a temperature rise curve in the thermal runaway process, shell deformation, corresponding time points and temperature points when a pressure release valve is opened, gas/electrolyte mixture injection phenomena, battery detonation/combustion behaviors, gas components, gas concentration and the like. At present, the traditional thermal runaway characteristic test platform monitors the phenomena of battery temperature rise, injection and combustion in an open environment, and the temperature difference between a battery sample and the environment causes heat loss and measurement errors of thermal parameters. In addition, although the existing adiabatic calorimeter in the market can maintain an adiabatic environment, the cabin temperature is too high in the test process, a gas detector cannot be installed in the cabin, gas generation component analysis needs to collect gas on site and then store the gas, the gas is transferred to a laboratory for testing, real-time sensing of characteristic gas at the initial stage of thermal runaway cannot be realized, and the integrated accurate testing capability of battery temperature, thermal runaway phenomenon and characteristic gas components in the adiabatic environment cannot be realized.
The utility model discloses an adiabatic cabin provides adiabatic environment for the battery that awaits measuring, tests battery thermal runaway characteristic under adiabatic environment, can eliminate the heat loss that external and battery body temperature difference arouse under the open environment, guarantees the accuracy of in-process calorifics parameter measurement value. Heating unit, temperature detecting element in the adiabatic cabin link to each other with centralized control device, and centralized control device heats through control heating unit and temperature detecting element, the environment in the adiabatic cabin and battery, reach the thermal balance state, detect for the thermal runaway test characteristic of energy storage battery and provide the condition.
An observation window is arranged on the heat-insulating cabin, and a video monitoring device in the test cabin can record the change of the battery in real time through the observation window and transmit data to the centralized control device; the gas channel that sets up on the adiabatic cabin for the battery that awaits measuring diffuses to the test chamber from the adiabatic cabin at thermal runaway in-process, and the gas detector that the test chamber set up makes can be by real-time perception when gaseous release to the test chamber in, and avoids the adiabatic cabin internal temperature too high and damage gas detector and video monitoring device. The gas analyzer analyzes gas components and the like in real time, and transmits a detection result to the centralized control device, and the centralized control device can acquire the components and the content of the battery in the thermal runaway process in real time, so that the secondary pollution of the gas is avoided, and the detection efficiency and the detection precision are improved.
Has the advantages that: compared with the prior art, the method has the advantages that,
(1) the utility model discloses a testing arrangement is based on the design of adiabatic temperature rise technique and adiabatic cabin gas passage, collects temperature detector, gas analysis device, video monitor and infrared detector in an organic whole, has realized carrying out integrated test analysis to energy storage battery thermal runaway characteristic under the adiabatic environment;
(2) the utility model solves the problem that the gas and image monitoring instrument is easily damaged in a high temperature environment, and has the integrated monitoring function of the thermal runaway key characteristic information such as temperature rise, very early trace characteristic gas components and content, battery shell deformation, thermal runaway gas generation composition and content and the like in the thermal runaway process of lithium ion batteries with different models under the adiabatic condition, thereby realizing the accurate test of the early thermal runaway characteristic of the lithium ion batteries;
(3) the gas detector series set transversely and longitudinally obtains the characteristic transverse and longitudinal diffusion speed of the gas, and assists the design of the battery fire early warning system;
(4) the utility model discloses an adiabatic design of integration testing arrangement combines high-efficient convenient test method, realizes the high accuracy integration test and the analysis of energy storage battery thermal runaway characteristic, masters energy storage battery thermal runaway key characteristic, provides data support for energy storage power station thermal runaway risk early warning, promotes energy storage power station safe temperature operation level.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the testing system of the present invention;
FIG. 2 is a schematic view of the internal structure of the insulated cabin;
FIG. 3 is a schematic view of the gas passages of the thermally insulated cabin body;
fig. 4 is a flow chart of temperature control in the insulated compartment.
Detailed Description
As shown in fig. 1, the integrated testing apparatus for thermal runaway characteristics of an energy storage battery in this embodiment includes a centralized control device 9, a test chamber 23, an adiabatic chamber 4 located inside the test chamber 23, and a gas detection unit, where the gas detection unit is located outside the adiabatic chamber 4 and inside the test chamber 23, a heating unit and a temperature detection unit are arranged in the adiabatic chamber 4, and the heating unit, the temperature detection unit, and the gas detection unit are all connected to the centralized control device 9.
The heating unit comprises an environment heating device and a battery heating device, and the temperature detection unit comprises an environment temperature detection device and a battery temperature detection device; as shown in fig. 2, a sample stage 20 is arranged in the heat-insulating cabin 4, the environment heating device is a heating resistance wire 19 on the inner wall of the heat-insulating cabin 4, and the temperature of the environment is increased by heating the resistance wire 19; the battery heating device is a sample heating plate 21 positioned on the sample table 20, and the sample heating plate 21 provides an external heat source for the battery to be tested. The environment temperature detection device is a first thermocouple 22 positioned at the upper left of the sample stage 20, and can monitor the temperature of the environment in real time; the battery temperature detection device is the second thermocouple 11 positioned on the inner wall of the sample heating plate 21; the heating resistance wire on the inner wall of the heat-insulating cabin 4 is also provided with a third thermocouple 24 for monitoring the actual heating temperature of the resistance wire 19.
The sample heating plate 21 is U-shaped, the battery to be measured is inserted into the U-shaped sample heating plate 21, and the second thermocouple 11 therein can measure the temperature of the battery to be measured in real time. The U-shaped heating plate 21 is located at the lower part of the cell, and its height is correspondingly lower than that of the cell, and the thermal runaway swelling of the cell is mainly at the middle part, so that the observation through the observation window 8 is not affected. The heating resistance wire 19 covers the inner surface of the heat insulation cabin body, dynamically controls the heating power through the centralized control device 9, and balances the ambient temperature in the cabin and the surface temperature of the battery based on the temperature feedback of the thermocouple to realize the heat insulation of the test environment. The first thermocouple 22, the second thermocouple 11 and the third thermocouple 24 are respectively fixed at the sample platform, the vicinity of the battery to be tested and the heating resistance wires of the inner wall of the heat insulation cabin, and monitor and feed back the ambient environment field temperature, the surface temperature of the battery sample and the temperature of the heating plate of the inner wall in real time, so as to guide the temperature control regulating system of the centralized control device to control the temperature and improve the heat insulation of the cabin environment.
The size of the heat insulation cabin 4 is 800 multiplied by 600mm (height multiplied by width multiplied by depth), the cabin body of the heat insulation cabin 4 comprises an outer layer and an inner layer, the inner layer is an explosion-proof steel plate layer, and the outer layer is a heat insulation layer; the heat-insulating layer is a carbon aerogel high-temperature heat-insulating composite material layer and is made of a carbon aerogel high-temperature heat-insulating composite material, the specific preparation method can refer to the patent application number CN201810162784.6, the composite material layer has extremely low heat conductivity and excellent heat-insulating property, the use temperature can reach 2200 ℃, and is far higher than the highest temperature (about 800 ℃) in the cabin when a battery burns. The top plate 5 of the cabin body of the heat insulation cabin 4 is provided with a gas channel, the thickness of the top plate 5 is 30mm, the gas channel is composed of a plurality of compact through holes, as shown in figure 3, the aperture of each through hole is 1mm, the through holes are regularly arranged into 3-40 holes, and part of the through holes are shown in figure 3. The area of the top plate 5 is 600mm multiplied by 600 mm; the design of the gas channel of the top plate 5 reduces the heat loss of the internal heat while ensuring the gas in the cabin to pass through, and the small amount of heat lost can be continuously worked by the inner wall heating device to ensure that the ambient temperature of the cabin and the temperature of the sample keep relatively balanced, so that the relative heat insulation of the cabin is realized, the damage of a monitoring instrument caused by overhigh temperature outside the heat insulation cabin is avoided, and the problem that the real-time sensing of the heat insulation environment and the characteristic gas cannot be simultaneously realized in the traditional design is solved.
The sliding rails 1 which are transversely and longitudinally distributed along the inner wall of the test chamber 23 are fixedly arranged in the test chamber 23, the transversely arranged sliding rails 1 are positioned on the inner wall of the top, the positions of the sliding rails 1 correspond to the positions of the gas channels of the heat insulation chamber 4, the gas detector 3 is fixedly arranged on the sliding rails 1, and similarly, the gas detector 3 can be fixed after being adjusted according to actual needs during use. As shown in fig. 1, three gas detectors 3 are transversely installed, and two gas detectors 3 are also installed right below the middle gas detector 3. The gas detector is a CW1310-21B composite fire detector (originated from smoke bench) and integrates smoke, temperature and hydrogen (H)2) Carbon monoxide (CO) and electrolyte gas, the gas detector can move transversely and longitudinally as required, so that the influence of the installation position of the detector on the sensitivity of the gas early warning system can be conveniently researched, and an optimization strategy can be obtained. The gas detector 3 transmits the detection data to the centralized control device. The test chamber 23 is provided with a second chamber door for taking out and feeding in the battery to be tested.
An outlet is arranged at the upper right of the test chamber 23 and is connected with the gas transmission pipeline 12, an air inlet pipe 13 and an air outlet pipe 15 are connected below the gas transmission pipeline 12, the air inlet pipe 13 and the air outlet pipe 15 are connected with the gas purifier 14, the gas purifier 14 adopts an intelligent double-arm movable smoke dust purifier (adopting Lai environmental protection technology), gas generated in the thermal runaway process of the battery can be sucked out of the test chamber 23, smoke dust particles contained in the gas are filtered and purified, and the purity of an instrument entering the gas chromatograph 18 is ensured. The right end of the gas transmission pipeline 12 is connected with a gas collecting cylinder 16, the lower part of the gas collecting cylinder 16 is connected with a gas chromatography gas inlet pipe 17, and the gas chromatography gas inlet pipe 17 is connected with a gas chromatograph 18. And valves are arranged on the conveying pipeline 12, the air inlet pipe 13, the air outlet pipe 15 and the gas chromatography air inlet pipe 17. When the battery to be tested generates a large amount of smoke in the testing process, the gas purifier 14 can be started to suck the gas into the purifier, the purified gas without smoke particles enters the gas collecting cylinder 16 through the connecting pipeline, and then enters the gas analyzer through the connecting pipeline for real-time analysis and detection; the connecting pipeline can be provided with a valve, and the gas pipeline is controlled by opening and closing the valve. Namely, the gas in the test chamber passes through the upper right outlet, passes through the gas purifier 14 and the gas collecting cylinder 16 in turn by the test chamber 23, and enters the gas chromatograph 18 for detection and analysis.
In the embodiment, an explosion-proof box body with the size of 140 multiplied by 80cm (the height multiplied by the width multiplied by the depth) is used as a test chamber 23, data of a gas sensor 3 in the chamber is transmitted by an RS485 standard, infrared and visible light video information is transmitted by an RJ45 interface, and the data is transmitted to a centralized control device 9 in a centralized manner and is stored. The test chamber 23 is provided with a test bus covered with a high temperature adhesive tape inside, and the connected monitoring instrument can be selected through a switching line device. Through the control system, a user can configure required detection items and detection sequences as required, the control system can automatically control the accessed temperature control, sensor and test bus according to user settings, and automatic tests are carried out according to a preset detection flow.
The specific test method of the integrated test device for the thermal runaway characteristic of the energy storage battery in the embodiment comprises the following steps: opening the second hatch door and the first hatch door 10, sending the battery sample to be tested into the heat insulation cabin 4 through the test cabin 23, fixing the battery sample to be tested in a battery heating device in the heat insulation cabin 4, namely on a heating plate 21 of the sample platform, checking whether each device is normal or not, and then closing the first hatch door 10 and the second hatch door. The centralized control device 9 controls the heating unit to heat and stop, so that the heat insulation cabin 4 is kept in a heat balance state; wherein the thermal equilibrium state is set to a difference Δ T of 0.02 ℃ between the ambient temperature and the battery temperature. Specifically, the heating plate 21 and the heating resistance wire 19 in the heat-insulating chamber 4 start to heat, the temperature sensor (thermocouple) in the heat-insulating chamber 4 monitors the temperature of the sample, the environment and the heating resistance wire 19 in real time, and the temperature control in the chamber is as shown in fig. 4; when T isEnvironment(s)And TBattery with a battery cellThe difference value is within the set delta T, and the centralized control device 9 controls the heating unit to stop heating; when T isEnvironment(s)And TBattery with a battery cellWhen the difference is larger than delta T, the centralized control device 9 controls the heating unit to start heating. When the temperature difference between the environment inside the thermally insulated compartment 4 and the battery is less than 0.02 ℃, the system thermal equilibrium is considered to be completed, and the battery thermal runaway characteristic test in the thermally insulated mode is started. The centralized control device 9 passes through a battery surface temperature sensorFeedback, real-time adjustment of heating power, guarantee that the ambient temperature in the cabin is the same as the surface temperature of the battery, analysis of gas production and heat production behaviors in an adiabatic environment, and the adiabatic temperature control technology refers to patent CN 201710636028.8.
In the testing process, the battery temperature detection device detects the temperature of the battery in real time and transmits the temperature to the centralized control device 9; as the temperature of the battery rises, gas released from the battery can enter the test chamber 23 through the gas channel on the insulation chamber 4, and the gas detector 3 detects the gas and transmits the detection result to the centralized control device 9. Therefore, as the temperature of the battery rises, the shell of the battery swells and generates gas until the pressure release valve explodes to release the gas, the video monitor and the infrared monitor can synchronously monitor deformation and temperature rise change of the battery in the process, and the released gas enters the test chamber 23 through the compact holes in the top of the heat insulation chamber 4 and is sensed by the gas detectors 3 vertically and longitudinally distributed in the test chamber 23. When a large amount of flue gas is generated, the gas purifier 14 is started to suck the gas into the purifier, the purified gas with the smoke particles removed enters the gas collecting cylinder 16, and then a control valve on a pipeline is opened to inject the gas into the gas chromatograph 18, so that the gas component analysis is completed. After the test is finished, the door of the test chamber 23 and the door of the heat-insulating chamber 4 are opened, natural cooling is performed, and then the system is closed.
The realization of the heat insulation environment of the embodiment is mainly embodied in the real-time temperature control device inside the heat insulation cabin and the heat insulation material outside the cabin body; in the aspect of structure, the top of the heat insulation cabin 4 adopts a compact porous design, so that the heat insulation environment in the cabin is ensured, the produced gas in the cabin can be released into the test cabin 23, and the damage to the monitoring device caused by overhigh temperature in the test cabin 23 is avoided. The integrated testing device integrates a series of sensors and gas analysis equipment, and carries out overall process monitoring and data analysis on the thermal runaway behaviors of the energy storage batteries of different models. The energy storage battery generates a large amount of heat and gas after thermal runaway, along with the accumulation of heat and gas in the battery, break through battery relief valve critical pressure after, inside gas can be released to test chamber 23, some supervisory equipment in the chamber are to the deformation of battery thermal runaway in-process, the relief valve is opened, behavior monitoring such as characteristic gas release, and to gas type, content and propagation path analysis, confirm battery thermal runaway critical temperature point, the gaseous and early warning detector installation optimal position of very early stage characteristic, provide quick, accurate, convenient data test environment for energy storage battery thermal runaway behavior analysis, provide reliable data support for energy storage battery safety risk assessment and thermal runaway risk early warning.
Claims (9)
1. The utility model provides an energy storage battery thermal runaway characteristic's integration testing arrangement which characterized in that: the device comprises a centralized control device, a test chamber, a heat insulation chamber positioned in the test chamber and a gas detection unit, wherein the gas detection unit is positioned outside the heat insulation chamber and inside the test chamber; the heating unit comprises an environment heating device and a battery heating device, and the temperature detection unit comprises an environment temperature detection device and a battery temperature detection device; the body of the heat insulation cabin is provided with a gas channel.
2. The integrated testing device for the thermal runaway characteristic of the energy storage battery according to claim 1, characterized in that: an observation window is arranged on the body of the heat insulation cabin, a video monitoring device is arranged on the outer side of the observation window and connected with the centralized control device, and the video monitoring device records the change of the battery through the observation window.
3. The integrated testing device for the thermal runaway characteristic of the energy storage battery according to claim 1, characterized in that: the gas detection unit comprises a plurality of gas detector series groups; each gas detector string group comprises a plurality of gas detectors and slide rails, the slide rails are transversely and longitudinally distributed along the inner wall of the test chamber, and the gas detectors are fixed on the slide rails.
4. The integrated testing device for the thermal runaway characteristic of the energy storage battery according to claim 1, characterized in that: the testing device also comprises a gas analysis device positioned outside the test chamber, and the gas analysis device is connected with the test chamber through a pipeline; the gas analysis device comprises a gas purifier, a gas collecting cylinder and a gas analyzer, a valve is arranged on the pipeline, and gas in the test chamber passes through the gas purifier and the gas collecting cylinder in sequence from the test chamber and then enters the gas analyzer through the connected pipeline.
5. The integrated testing device for the thermal runaway characteristic of the energy storage battery according to claim 2, characterized in that: the video monitoring device is fixedly arranged on the sliding rail, and the sliding rail is fixed on the inner wall of the test chamber.
6. The integrated testing device for the thermal runaway characteristic of the energy storage battery according to claim 1, characterized in that: the cabin body of the heat insulation cabin comprises an inner layer and an outer layer, wherein the inner layer is an explosion-proof steel plate layer, and the outer layer is a heat insulation layer.
7. The integrated testing device for the thermal runaway characteristic of the energy storage battery according to claim 1, characterized in that: the gas channel is arranged on the top of the heat-insulating cabin.
8. The integrated testing device for the thermal runaway characteristic of the energy storage battery according to claim 1, characterized in that: the gas channel comprises a plurality of through holes, and the aperture of each through hole is 1-3 mm.
9. The integrated testing device for the thermal runaway characteristic of the energy storage battery according to claim 1, characterized in that: the battery heating device comprises a heating plate which is U-shaped.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112595982A (en) * | 2020-12-04 | 2021-04-02 | 东莞市巴能检测技术有限公司 | Battery adiabatic temperature rise detection device |
| CN114383708A (en) * | 2021-12-23 | 2022-04-22 | 东莞市巴能检测技术有限公司 | Thermal runaway data acquisition method and acquisition analysis system of lithium ion battery |
| CN115598206A (en) * | 2022-10-14 | 2023-01-13 | 吉林大学（Cn） | Lithium ion power battery thermal runaway gas production dynamics testing arrangement |
| CN117309066A (en) * | 2023-11-29 | 2023-12-29 | 珠海科创储能科技有限公司 | Energy storage cabinet monitoring system, method and device, storage medium and electronic equipment |
| CN117368772A (en) * | 2023-11-17 | 2024-01-09 | 东莞市力邦检测服务有限公司 | Integrated testing device for thermal runaway characteristics of energy storage battery |
| US11982660B2 (en) | 2021-06-17 | 2024-05-14 | GM Global Technology Operations LLC | Quality control system for analyzing the quality of a battery cell through analysis of a physical property of a gas formed during a cell formation process and a method of analyzing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112595982A (en) * | 2020-12-04 | 2021-04-02 | 东莞市巴能检测技术有限公司 | Battery adiabatic temperature rise detection device |
| US11982660B2 (en) | 2021-06-17 | 2024-05-14 | GM Global Technology Operations LLC | Quality control system for analyzing the quality of a battery cell through analysis of a physical property of a gas formed during a cell formation process and a method of analyzing the same |
| CN114383708A (en) * | 2021-12-23 | 2022-04-22 | 东莞市巴能检测技术有限公司 | Thermal runaway data acquisition method and acquisition analysis system of lithium ion battery |
| CN115598206A (en) * | 2022-10-14 | 2023-01-13 | 吉林大学（Cn） | Lithium ion power battery thermal runaway gas production dynamics testing arrangement |
| CN117368772A (en) * | 2023-11-17 | 2024-01-09 | 东莞市力邦检测服务有限公司 | Integrated testing device for thermal runaway characteristics of energy storage battery |
| CN117368772B (en) * | 2023-11-17 | 2024-05-10 | 东莞市力邦检测服务有限公司 | Integrated testing device for thermal runaway characteristics of energy storage battery |
| CN117309066A (en) * | 2023-11-29 | 2023-12-29 | 珠海科创储能科技有限公司 | Energy storage cabinet monitoring system, method and device, storage medium and electronic equipment |
| CN117309066B (en) * | 2023-11-29 | 2024-03-26 | 珠海科创储能科技有限公司 | Energy storage cabinet monitoring system, method and device, storage medium and electronic equipment |
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