CN218180733U - Experimental device for in-situ assessment of thermal runaway gas blasting characteristics of lithium ion battery - Google Patents
Experimental device for in-situ assessment of thermal runaway gas blasting characteristics of lithium ion battery Download PDFInfo
- Publication number
- CN218180733U CN218180733U CN202221687642.XU CN202221687642U CN218180733U CN 218180733 U CN218180733 U CN 218180733U CN 202221687642 U CN202221687642 U CN 202221687642U CN 218180733 U CN218180733 U CN 218180733U
- Authority
- CN
- China
- Prior art keywords
- gas
- thermal runaway
- monitoring cabin
- lithium ion
- ion battery
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an experimental device for normal position aassessment lithium ion battery thermal runaway gas explodes characteristic, include: the system comprises an air inlet pipeline, a monitoring cabin, an exhaust pipeline, an automatic sample injector, a gas chromatography-mass spectrometer and a data recorder; heating belts are wrapped on the outer peripheral sides of the air inlet pipeline and the monitoring cabin; the gas inlet pipeline is provided with two branches, one branch is connected with the gas chromatography-mass spectrometer through an automatic sample injector, and the other branch is provided with a first control valve and connected with the gas inlet end of the monitoring cabin; the exhaust pipeline is connected with the exhaust end of the monitoring cabin, and a second control valve is installed on the exhaust pipeline; the surface of the monitoring cabin is provided with a transparent window, and the inside of the monitoring cabin is provided with a temperature sensor, a pressure sensor and an electromagnetic igniter; the data recorder is respectively electrically connected with the temperature sensor and the pressure sensor. The utility model discloses can carry out the normal position to lithium cell thermal runaway gas and gather and carry out the blasting nature analysis, can carry out the analysis to thermal runaway gas composition simultaneously.
Description
Technical Field
The utility model relates to a battery safety experiment technical field, more specifically the saying so relates to an experimental apparatus that normal position aassessment lithium ion battery thermal runaway gas exploded the characteristic.
Background
At present, a mixed gas explosion limit testing instrument is mostly used for analyzing the explosion characteristics of the thermal runaway gas of the lithium battery, however, the lithium battery can release electrolyte vapor and high-boiling-point hydrocarbon when the thermal runaway gas is generated, and when the existing mixed gas explosion limit testing instrument is used for collecting the gas, the high-boiling-point gas can be liquefied, so that the final experimental result has deviation from the actual result. Meanwhile, the existing mixed gas explosion limit testing instrument can only measure the explosion characteristics of thermal runaway gas, cannot synchronously analyze gas components, and has single function.
Therefore, how to provide an experimental device for performing in-situ collection on the thermal runaway gas of the lithium battery and performing blasting analysis and simultaneously analyzing the components of the thermal runaway gas is a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an experimental apparatus of normal position aassessment lithium ion battery thermal runaway gas blasting characteristic can carry out the normal position to lithium cell thermal runaway gas and gather and carry out blasting nature analysis, can carry out the analysis to thermal runaway gas composition simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an experimental device for in-situ evaluation of combustion and explosion characteristics of thermal runaway gas of a lithium ion battery comprises: the system comprises an air inlet pipeline, a monitoring cabin, an exhaust pipeline, an automatic sample injector, a gas chromatography-mass spectrometer and a data recorder; heating belts are wrapped on the outer peripheries of the air inlet pipeline and the monitoring cabin;
the gas inlet pipeline is provided with two branches, one branch is connected with the gas chromatograph-mass spectrometer through the automatic sample injector, and the other branch is provided with a first control valve and is connected with the gas inlet end of the monitoring cabin;
the exhaust pipeline is connected with the exhaust end of the monitoring cabin, and a second control valve is installed on the exhaust pipeline;
the surface of the monitoring cabin is provided with a transparent window, and a temperature sensor, a pressure sensor and an electromagnetic igniter are arranged in the monitoring cabin; the data recorder is electrically connected with the temperature sensor and the pressure sensor respectively.
Further, in the above experimental apparatus for in-situ evaluating the thermal runaway gas explosion characteristics of the lithium ion battery, the experimental apparatus further includes: an air compressor; the air compressor is connected with the exhaust pipeline and used for replacing original gas in the monitoring cabin with air or inert gas before collecting battery thermal runaway gas.
Further, in the experimental apparatus for in-situ evaluation of the thermal runaway gas explosion characteristics of the lithium ion battery, the data recorder is used for recording the temperature data change acquired by the temperature sensor and the pressure data change acquired by the pressure sensor in real time.
Furthermore, in the experimental apparatus for in-situ evaluation of the explosion characteristics of the thermal runaway gas of the lithium ion battery, a plurality of temperature sensors are arranged and distributed at different positions of the bottom wall of the monitoring cabin.
Furthermore, in the experimental device for in-situ evaluation of the explosion characteristics of the thermal runaway gas of the lithium ion battery, the temperature sensor adopts a K-type thermocouple.
Furthermore, in the experimental device for in-situ evaluation of the explosion characteristics of the thermal runaway gas of the lithium ion battery, the transparent window is made of high-temperature and high-pressure resistant glass.
Can know via foretell technical scheme, compare with prior art, the utility model discloses an experimental apparatus of normal position aassessment lithium ion battery thermal runaway gas characteristic of blasting can heat air inlet pipe way and monitoring cabin through the heating band, avoids thermal runaway gas collection in-process high boiling point gas to take place the liquefaction, avoids gas loss, guarantees the accuracy of experimental result. Through the cooperation use of air inlet pipeline, exhaust pipe and control valve, change the experiment operating mode according to different experiment demands, can make before the experiment, let in air or inert gas and monitor the cabin and carry out the gas washing, through pressure sensor monitoring cabin internal pressure simultaneously, realize the thermal runaway gas that burns under the multiple experiment operating mode of different low pressure environment or inert gas environment and explode the characteristic experiment. Through dividing into two branches with the air inlet pipeline, can realize simultaneously carrying out two kinds of experiments of gas composition analysis and blasting characteristic analysis to battery thermal runaway gas at the experimentation, provide technical support for lithium cell thermal danger evaluation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is the utility model provides an experimental apparatus schematic structure diagram of normal position aassessment lithium ion battery thermal runaway gas characteristic of exploding.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment of the utility model discloses an experimental apparatus for normal position aassessment lithium ion battery thermal runaway gas characteristic of exploding includes: the system comprises an air inlet pipeline 1, a monitoring cabin 2, an exhaust pipeline 3, an automatic sample injector 4, a gas chromatography-mass spectrometer 5 and a data recorder; heating belts are wrapped on the outer peripheral sides of the air inlet pipeline 1 and the monitoring cabin 2;
the gas inlet pipeline 1 is provided with two branches, one branch is connected with a gas chromatography-mass spectrometer 5 through an automatic sample injector 4, and the other branch is provided with a first control valve 6 and connected with the gas inlet end of the monitoring cabin 2;
the exhaust pipeline 3 is connected with the exhaust end of the monitoring cabin 2, and a second control valve 7 is installed on the exhaust pipeline 3;
the surface of the monitoring cabin 2 is provided with a transparent window 8, and the inside of the monitoring cabin is provided with a temperature sensor 9, a pressure sensor 10 and an electromagnetic igniter 11; the data recorder is respectively electrically connected with the temperature sensor 8 and the pressure sensor 10.
In the embodiment of the invention, the temperature sensor 9 is used for monitoring the temperature change inside the monitoring cabin 2 in the thermal runaway gas explosion process, the pressure sensor 10 is used for monitoring the pressure change inside the monitoring cabin 2 in the thermal runaway gas explosion process, the transparent window 8 is used for observing the thermal runaway gas explosion phenomenon of the lithium battery in the monitoring cabin 2, the automatic sample injector 4 is used for quantitatively sending the thermal runaway gas into the gas chromatography-mass spectrometer 5, the thermal runaway gas components and the content thereof are analyzed by the gas chromatography-mass spectrometer 5, and the gas explosion phenomenon can be visually observed through the transparent window 8.
In one embodiment, further comprising: an air compressor; the air compressor is connected with the exhaust pipeline 3 and is used for replacing the original gas in the monitoring cabin 2 with air or inert gas before collecting the thermal runaway gas of the battery.
In other embodiments, the data recorder is used for recording the temperature data change collected by the temperature sensor and the pressure data change collected by the pressure sensor in real time; the method specifically comprises the following steps: before the experiment begins, monitoring the pressure data change collected by the pressure sensor 10 in the gas washing process of the monitoring cabin 2, and observing whether the pressure condition under the current experiment requirement is met; in the process of burning and exploding the thermal runaway gas, the temperature data change acquired by the temperature sensor 9 and the pressure data change acquired by the pressure sensor 10 are recorded and stored in real time. The data recorder can not only observe the temperature and pressure change condition of the monitoring cabin 2 before the experiment and in the thermal runaway gas explosion process in real time, but also store the experiment data, so that the experimenter can conveniently take and research the experiment data at any time.
In one embodiment, the temperature sensor 9 is provided in plurality and distributed at different locations on the bottom wall of the monitoring chamber. In this embodiment, the temperature sensor 9 is a K-type thermocouple. The temperature data of different positions of the monitoring cabin are collected, so that the temperature in different distance ranges from the explosion point can be monitored.
In one embodiment, the transparent window 8 is made of high temperature and high pressure resistant glass. Wherein, the monitoring cabin has high temperature and high pressure resistant and strong air tightness. The high-temperature and high-pressure resistant glass can not only ensure that experimenters can clearly observe experimental phenomena, but also avoid the damage to the transparent window caused by high-temperature and high-pressure experimental environment.
The specific experimental process of the embodiment of the invention is as follows:
s1, heating the air inlet pipeline 1 and the monitoring cabin 2 through a heating belt. In particular, the temperature can be heated and maintained at 120 ℃.
And S2, adjusting the internal condition of the monitoring cabin 2 to an expected working condition.
In particular, the pressure and the gas composition inside the monitoring chamber 2 can be adjusted to the desired requirements by means of the inlet line 1 and the outlet line 3.
And S3, introducing the thermal runaway gas into the gas inlet pipeline 1.
Namely, the first control valve 6 of the air inlet pipeline is opened, and the lithium battery thermal runaway gas is introduced.
And S4, quantitatively introducing the sample to be detected into a gas chromatograph-mass spectrometer 5 through an automatic sample injector 4.
Namely, the lithium battery thermal runaway gas is injected by using an automatic injector 9, and gas component analysis is performed by using a gas chromatography-mass spectrometer 5 according to a specific temperature rise program.
And S5, introducing thermal runaway gas into the monitoring cabin 2.
Namely, the first control valve 6 of the monitoring chamber 2 is opened, and the lithium battery thermal runaway gas is introduced according to the preset gas quantity.
And S6, starting a data recorder to collect temperature and pressure data.
Namely, the data recorder is started, and the temperature and the pressure inside the monitoring chamber 2 are continuously collected through the temperature sensor 9 and the pressure sensor 10.
And S7, carrying out an ignition experiment on the thermal runaway gas by using an electromagnetic igniter 11.
Namely, the lithium battery thermal runaway gas is ignited by using the electromagnetic igniter 11, the temperature and pressure change in the monitoring cabin 2 is analyzed, and whether the thermal runaway gas has the explosion phenomenon or not is judged by combining the phenomenon of the transparent window 8.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides an experimental apparatus of normal position aassessment lithium ion battery thermal runaway gas blasting characteristic which characterized in that includes: the system comprises an air inlet pipeline, a monitoring cabin, an exhaust pipeline, an automatic sample injector, a gas chromatography-mass spectrometer and a data recorder; heating belts are wrapped on the outer peripheries of the air inlet pipeline and the monitoring cabin;
the gas inlet pipeline is provided with two branches, one branch is connected with the gas chromatograph-mass spectrometer through the automatic sample injector, and the other branch is provided with a first control valve and connected with the gas inlet end of the monitoring cabin;
the exhaust pipeline is connected with the exhaust end of the monitoring cabin, and a second control valve is installed on the exhaust pipeline;
the surface of the monitoring cabin is provided with a transparent window, and a temperature sensor, a pressure sensor and an electromagnetic igniter are arranged in the monitoring cabin; the data recorder is electrically connected with the temperature sensor and the pressure sensor respectively.
2. The experimental device for in-situ evaluation of the thermal runaway gas blasting characteristics of the lithium ion battery according to claim 1, further comprising: an air compressor; the air compressor is connected with the exhaust pipeline and used for replacing original gas in the monitoring cabin with air or inert gas before collecting battery thermal runaway gas.
3. The experimental device for in-situ assessment of the implosion characteristics of the lithium ion battery thermal runaway gas according to claim 1, wherein the data recorder is used for recording the change of temperature data acquired by the temperature sensor and the change of pressure data acquired by the pressure sensor in real time.
4. The experimental device for in-situ evaluation of the thermal runaway gas blasting characteristics of the lithium ion battery according to claim 1, wherein the temperature sensors are provided in plurality and distributed at different positions on the bottom wall of the monitoring cabin.
5. The experimental device for in-situ evaluation of the thermal runaway gas blasting characteristics of the lithium ion battery according to claim 1, wherein the temperature sensor is a K-type thermocouple.
6. The experimental device for in-situ assessment of the thermal runaway gas blasting characteristics of the lithium ion battery according to claim 1, wherein the transparent window is made of high temperature and high pressure resistant glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221687642.XU CN218180733U (en) | 2022-07-01 | 2022-07-01 | Experimental device for in-situ assessment of thermal runaway gas blasting characteristics of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221687642.XU CN218180733U (en) | 2022-07-01 | 2022-07-01 | Experimental device for in-situ assessment of thermal runaway gas blasting characteristics of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218180733U true CN218180733U (en) | 2022-12-30 |
Family
ID=84611884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221687642.XU Active CN218180733U (en) | 2022-07-01 | 2022-07-01 | Experimental device for in-situ assessment of thermal runaway gas blasting characteristics of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218180733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117970145A (en) * | 2024-04-02 | 2024-05-03 | 青岛理工大学 | Lithium battery thermal runaway simulation test device and test method |
-
2022
- 2022-07-01 CN CN202221687642.XU patent/CN218180733U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117970145A (en) * | 2024-04-02 | 2024-05-03 | 青岛理工大学 | Lithium battery thermal runaway simulation test device and test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101382533B (en) | Device for testing powder combustion characteristics in vacuum condition | |
| CN106093283B (en) | A kind of test method and device of Fast Evaluation lithium battery fire fire fighting with fire extinguisher performance | |
| CN218180733U (en) | Experimental device for in-situ assessment of thermal runaway gas blasting characteristics of lithium ion battery | |
| CN109946634B (en) | Lithium ion battery thermal runaway environment simulation equipment and method | |
| CN106646257A (en) | Testing platform and testing method for detecting thermal runaway diffusion of lithium ion battery | |
| CN211528633U (en) | Integrated testing device for thermal runaway characteristic of energy storage battery | |
| CN104931531A (en) | Method for testing pressure during heating process of explosive and propellant columns | |
| CN107727691A (en) | A kind of lithium ion battery combustion explosion danger experimental rig | |
| CN113791358A (en) | Multi-parameter lithium ion battery safety evaluation device and method | |
| CN102042994A (en) | Temperature test device for ignition point of explosive | |
| KR102198882B1 (en) | An apparatus for sampling gas generated within a secondary cell, a system thereof, and a method thereof | |
| CN114859232A (en) | Method and device for quantitatively evaluating thermal runaway dangerousness of lithium batteries in different charge states | |
| CN115184405A (en) | Explosion characteristic detection device for lithium ion battery thermal runaway heterogeneous eruption material | |
| CN214539358U (en) | High-temperature high-pressure explosion limit tester | |
| CN109655576A (en) | A kind of device of the roasting combustion responsiveness of rapid evaluation solid propellant | |
| CN114609186B (en) | Device and method for evaluating thermal runaway gas production explosion characteristics of lithium ion battery | |
| CN207248805U (en) | The grading plant of dust combustion danger | |
| CN113410561A (en) | Design method and device of battery pack, battery pack and vehicle | |
| CN113376109A (en) | Device and method for on-line detection of burnout degree of pulverized coal boiler based on spectral analysis | |
| CN108918355B (en) | Method for evaluating explosion sensitivity parameters of low-density polyethylene powder | |
| CN110124238A (en) | Using the method for test device test lithium ion battery case fire prevention and control device performance | |
| CN217442606U (en) | Thermal abuse thermal runaway ignition experiment platform for lithium batteries with different charge states | |
| CN107643318A (en) | Combustion explosion of combustible gas characteristic test method under hot conditions | |
| CN116298975A (en) | Early smoke characteristic test platform for thermal runaway of battery and measurement method thereof | |
| CN214310261U (en) | Experimental device for be used for coal seam roof to rupture and give off electricity and explode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |