CN212277297U - Lithium ion battery pack heat abuse experimental device with enclosure - Google Patents
Lithium ion battery pack heat abuse experimental device with enclosure Download PDFInfo
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- CN212277297U CN212277297U CN202021654464.1U CN202021654464U CN212277297U CN 212277297 U CN212277297 U CN 212277297U CN 202021654464 U CN202021654464 U CN 202021654464U CN 212277297 U CN212277297 U CN 212277297U
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a lithium ion battery organizes heat abuse experimental apparatus who is kept off by enclosing, includes the explosion-proof storehouse body, encloses fender shell, lithium ion battery group, electrical heating rod, electrical heating board and electronic scale, and explosion-proof storehouse is internal to be equipped with temperature sensor, heat conduction sensor, flue gas sensor and bolometer, and explosion-proof storehouse is external to be equipped with infrared camera appearance. The experimental method comprises the following steps: when carrying out lithium ion battery pack thermal runaway and combustion experiments caused by an internal heat source under enclosure, assembling the lithium ion battery pack, placing an electric heating rod, starting the electric heating rod until the lithium ion battery pack is thermally runaway or combusted, recording experiment data, and repeating the experiments after adjusting experiment parameters; when carrying out the lithium ion battery group thermal runaway and the burning experiment that lead to by external heat source that are enclosed and keep off, assemble lithium ion battery group and do not place the electrical heating stick, start the electrical heating board, take place thermal runaway or burning until lithium ion battery group, record experimental data, repeat the experiment after the adjustment experiment parameter.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery safety test, especially, relate to a lithium ion battery group heat abuse experimental apparatus who is enclosed the fender.
Background
Lithium ion batteries have the advantages of long cycle life, high specific energy, small memory effect, etc., and have been widely used in various electronic devices. However, since the voltage and capacity of the lithium ion battery cells are limited, in practical applications, a plurality of lithium ion battery cells need to be assembled in series or in parallel to form a lithium ion battery pack, and finally, the lithium ion battery pack is packaged in a housing or other enclosure to be used as a power supply.
When the lithium ion battery pack is actually used as a power supply device, the situation of thermal abuse often occurs, and the thermal abuse can cause thermal runaway or combustion, even explosion in severe cases, of the lithium ion battery, and meanwhile, toxic and harmful gases can be generated, so that the environment and human bodies are harmed.
In order to test which thermal abuse conditions can cause thermal runaway or combustion of the lithium ion battery, various thermal abuse experimental settings are provided, but the existing thermal abuse experimental settings directly act on the lithium ion battery body, but the lithium ion battery pack in practical application is provided with a shell and the like, so that the experiment in which the thermal abuse conditions are directly applied on the lithium ion battery body is not in accordance with the real thermal abuse condition, which can cause distortion of experimental data.
SUMMERY OF THE UTILITY MODEL
The problem to prior art exists, the utility model provides a lithium ion battery group's heat abuse experimental apparatus who is enclosed and keeps off can simulate multiple heat abuse condition, restores out the various heat abuse condition in the real life as far as, has set up in the experimental apparatus and has enclosed the fender structure for simulating lithium ion battery's the actual application condition simultaneously, makes the experimental data truer and more reliable.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a lithium ion battery pack heat abuse experimental device under enclosure comprises an explosion-proof cabin body, an enclosure shell, a lithium ion battery pack, an electric heating rod, an electric heating plate and an electronic scale; an observation window is arranged on the explosion-proof bin body, and a ventilation system for keeping the air in the bin to circulate is also arranged in the explosion-proof bin body; the electronic scale is positioned in the anti-explosion bin body and is arranged on a bottom plate of the anti-explosion bin body; the electric heating plate is of an L-shaped structure, the electric heating plate fixing frame is arranged on the electronic scale, and the enclosure shell is placed on the electric heating plate; the lithium ion battery pack is packaged in the enclosure shell, a lithium ion battery vacant area is arranged in the lithium ion battery pack, and the electric heating rod is located in the lithium ion battery vacant area.
The enclosure shell comprises a battery storage box and a sealing cover, and the battery storage box and the sealing cover are combined to form a complete enclosure shell; the lithium ion battery pack is positioned inside the battery storage box.
Temperature sensors are arranged outside the enclosure shell, in the gap inside the enclosure shell and in the lithium ion battery gap of the lithium ion battery pack, and the temperature sensors adopt K-type armored thermocouples.
And a heat conduction sensor is arranged between the lithium ion battery contact surfaces of the lithium ion battery pack.
An infrared camera is erected outside an observation window of the explosion-proof bin body, and a flue gas sensor and a radiant heat flow meter are arranged inside the explosion-proof bin body.
A computer, a data collector and a controller are arranged outside the explosion-proof bin body, the data output ends of the temperature sensor, the heat conduction sensor, the smoke sensor, the radiant heat flowmeter and the electronic scale are all electrically connected with the data collector, and the data collector is electrically connected with the computer; the control ends of the electric heating rod and the electric heating plate are electrically connected with a controller, and the controller is electrically connected with a computer.
A thermal abuse experimental method of a lithium ion battery pack with a barrier adopts the thermal abuse experimental device of the lithium ion battery pack with the barrier, and comprises the following steps:
firstly, carrying out thermal runaway and combustion experiment of lithium ion battery pack caused by enclosed internal heat source
The method comprises the following steps: determining the type, the type and the number of the lithium ion batteries, assembling the selected lithium ion batteries into a lithium ion battery pack according to a set connection mode and an arrangement mode, reserving a vacant area of the lithium ion batteries for placing an electric heating rod, and packaging the assembled lithium ion battery pack into an enclosure shell;
step two: starting the electric heating rod to provide a heat source for thermal runaway or combustion of the lithium ion battery pack;
step three: measuring the temperature data in the lithium ion battery pack through a temperature sensor in the lithium ion battery gap, and closing the electric heating rod until the temperature in the lithium ion battery pack reaches the temperature change range set by the experiment;
step four: recording temperature data measured by all temperature sensors, and determining the temperature distribution condition in the experimental device when the lithium ion battery pack is out of thermal control or burns; measuring the heat conductivity coefficient between the lithium ion batteries by using a heat conductivity sensor; identifying gas components generated in the experimental device when the lithium ion battery pack is out of control due to heat or burns by using a flue gas sensor; measuring thermal radiation of flame and enclosure shell when lithium ion battery pack is out of control or burning by using a radiant heat flow meter; recording the ambient temperature of the lithium ion battery pack when thermal runaway or combustion occurs and the surface temperature of the enclosure shell by using an infrared camera; measuring mass loss of the lithium ion battery pack when thermal runaway or combustion occurs by using an electronic scale;
step five: after the thermal runaway or combustion process of the lithium ion battery pack is finished and the ambient temperature of the explosion-proof bin body is recovered to the normal temperature state, the residues are cleaned, the lithium ion batteries are reselected to be assembled into the lithium ion battery pack on the premise of not changing the type, the number, the connection mode and the arrangement mode of the lithium ion batteries, but the placement position of the electric heating rod needs to be adjusted, and then the steps from two to four are repeated;
step six: after the thermal runaway or combustion process of the lithium ion battery pack is finished and the ambient temperature of the explosion-proof bin body is recovered to the normal temperature state, the residues are cleaned, the lithium ion batteries are re-selected to be assembled into the lithium ion battery pack on the premise of not changing the type, the number, the connection mode and the arrangement mode of the lithium ion batteries, the enclosure shells with different thicknesses and thermal inertia coefficients are replaced to package the lithium ion battery pack, and then the second step, the third step and the fifth step are repeated;
step seven: after the thermal runaway or combustion process of the lithium ion battery pack is finished and the ambient temperature of the explosion-proof bin body is recovered to the normal temperature state, the residues are cleaned, the type, the variety, the number, the connection mode or the arrangement mode of the lithium ion batteries are adjusted, the lithium ion batteries are reselected to be assembled into the lithium ion battery pack, and then the second step to the sixth step are repeated;
secondly, developing the thermal runaway and combustion experiment of the lithium ion battery pack caused by the external heat source and subjected to enclosure
The method comprises the following steps: determining the type, the type and the number of the lithium ion batteries, assembling the selected lithium ion batteries into a lithium ion battery pack according to a set connection mode and an arrangement mode, installing an electric heating rod without reserving a vacant area of the lithium ion batteries, and then packaging the assembled lithium ion battery pack into an enclosure shell;
step two: starting the electric heating plate to provide a heat source for thermal runaway or combustion of the lithium ion battery pack;
step three: measuring the temperature data in the lithium ion battery pack through a temperature sensor in the lithium ion battery gap, and closing the electric heating plate until the temperature in the lithium ion battery pack reaches the temperature change range set by the experiment;
step four: recording temperature data measured by all temperature sensors, and determining the temperature distribution condition in the experimental device when the lithium ion battery pack is out of thermal control or burns; measuring the heat conductivity coefficient between the lithium ion batteries by using a heat conductivity sensor; identifying gas components generated in the experimental device when the lithium ion battery pack is out of control due to heat or burns by using a flue gas sensor; measuring thermal radiation of flame and enclosure shell when lithium ion battery pack is out of control or burning by using a radiant heat flow meter; recording the ambient temperature of the lithium ion battery pack when thermal runaway or combustion occurs and the surface temperature of the enclosure shell by using an infrared camera; measuring mass loss of the lithium ion battery pack when thermal runaway or combustion occurs by using an electronic scale;
step five: after the thermal runaway or combustion process of the lithium ion battery pack is finished and the ambient temperature of the explosion-proof bin body is recovered to the normal temperature state, the residues are cleaned, the lithium ion batteries are reselected to be assembled into the lithium ion battery pack on the premise of not changing the type, the quantity, the connection mode and the arrangement mode of the lithium ion batteries, but the heating position of the electric heating plate needs to be adjusted, and then the steps from two to four are repeated;
step six: after the thermal runaway or combustion process of the lithium ion battery pack is finished and the ambient temperature of the explosion-proof bin body is recovered to the normal temperature state, the residues are cleaned, the lithium ion batteries are re-selected to be assembled into the lithium ion battery pack on the premise of not changing the type, the number, the connection mode and the arrangement mode of the lithium ion batteries, the enclosure shells with different thicknesses and thermal inertia coefficients are replaced to package the lithium ion battery pack, and then the second step, the third step and the fifth step are repeated;
step seven: and after the thermal runaway or the combustion process of the lithium ion battery pack is finished and the ambient temperature of the explosion-proof bin body is recovered to the normal temperature state, cleaning residues, adjusting the type, the quantity, the connection mode or the arrangement mode of the lithium ion batteries, reselecting the lithium ion batteries to assemble the lithium ion battery pack, and then repeating the second step to the sixth step.
The utility model has the advantages that:
the utility model discloses a receive lithium ion battery group heat abuse experimental apparatus who encloses fender can simulate multiple heat abuse condition, restores out the various heat abuse condition in the real life as far as, for simulating lithium ion battery's the actual application condition, has set up among the experimental apparatus and has enclosed the fender structure simultaneously, makes the experimental data truer and more reliable.
Drawings
Fig. 1 is a schematic structural diagram of a thermal abuse experimental apparatus for a lithium ion battery pack under enclosure according to the present invention;
FIG. 2 is a schematic structural view of the enclosure housing with the lithium ion battery pack placed therein according to the present invention;
in the figure, 1-explosion-proof storehouse body, 2-enclose and keep off the shell, 3-lithium ion battery group, 4-electrical heating rod, 5-electric heating board, 6-electronic scale, 7-observation window, 8-battery storage box, 9-closing cap, 10-heat conductivity sensor, 11-infrared camera appearance, 12-flue gas sensor, 13-bolometer, 14-temperature sensor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, an enclosed lithium ion battery pack abuse test device comprises an explosion-proof bin body 1, an enclosure shell 2, a lithium ion battery pack 3, an electric heating rod 4, an electric heating plate 5 and an electronic scale 6; an observation window 7 is arranged on the explosion-proof bin body 1, and a ventilation system for keeping the air in the bin to circulate is also arranged in the explosion-proof bin body 1; the electronic scale 6 is positioned inside the explosion-proof bin body 1 and is arranged on a bottom plate of the explosion-proof bin body 1; the electric heating plate 5 is of an L-shaped structure, the electric heating plate 5 is fixedly arranged on the electronic scale 6, and the enclosure shell 2 is placed on the electric heating plate 5; the lithium ion battery pack 3 is packaged in the enclosure shell 2, a lithium ion battery vacant area is arranged in the lithium ion battery pack 3, and the electric heating rod 4 is positioned in the lithium ion battery vacant area.
The enclosure shell 2 comprises a battery storage box 8 and a cover 9, and the battery storage box 8 and the cover 9 are combined to form the complete enclosure shell 2; the lithium ion battery pack 3 is located inside a battery storage box 8.
And a heat conduction sensor 10 is arranged between the lithium ion battery contact surfaces of the lithium ion battery pack 3.
An infrared camera 11 is erected outside the observation window 7 of the explosion-proof bin body 1, and a flue gas sensor 12 and a radiant heat flow meter 13 are arranged inside the explosion-proof bin body 1.
A computer, a data acquisition unit and a controller are arranged outside the explosion-proof bin body 1, the data output ends of the temperature sensor 14, the heat conduction sensor 10, the flue gas sensor 12, the radiant heat flow meter 13 and the electronic scale 6 are electrically connected with the data acquisition unit, and the data acquisition unit is electrically connected with the computer; the control ends of the electric heating rod 4 and the electric heating plate 5 are electrically connected with a controller, and the controller is electrically connected with a computer.
A thermal abuse experimental method of a lithium ion battery pack with a barrier adopts the thermal abuse experimental device of the lithium ion battery pack with the barrier, and comprises the following steps:
firstly, carrying out thermal runaway and combustion experiment of lithium ion battery pack caused by enclosed internal heat source
The method comprises the following steps: determining the type, the type and the number of the lithium ion batteries, assembling the selected lithium ion batteries into a lithium ion battery pack 3 according to a set connection mode and an arrangement mode, reserving a vacant area of the lithium ion batteries for placing an electric heating rod 4, and packaging the assembled lithium ion battery pack 3 into an enclosure shell 2;
step two: starting the electric heating rod 4 to provide a heat source for thermal runaway or combustion of the lithium ion battery pack 3;
step three: measuring the temperature data inside the lithium ion battery pack 3 through a temperature sensor 14 in the lithium ion battery gap, and turning off the electric heating rod 4 until the temperature inside the lithium ion battery pack 3 reaches the temperature change range set by the experiment;
step four: recording temperature data measured by all the temperature sensors 14, and determining the temperature distribution condition in the experimental device when the lithium ion battery pack 3 is in thermal runaway or burning; measuring the heat conductivity coefficient between the lithium ion batteries by using the heat conductivity sensor 10; utilize flue gas sensor 12 to discern CO that produces in the experimental apparatus when lithium ion battery group 3 takes place thermal runaway or burning2、CO、H2And gas components such as HF; measuring the thermal radiation of flame and enclosure shell 2 when lithium ion battery pack 3 is out of control or is in combustion by using a radiant heat flow meter 13; recording the ambient temperature of the lithium ion battery pack 3 when thermal runaway or combustion occurs and the surface temperature of the enclosure shell 2 by using an infrared camera 11; measuring the mass loss of the lithium ion battery pack 3 when thermal runaway or combustion occurs by using the electronic scale 6;
step five: after the thermal runaway or combustion process of the lithium ion battery pack 3 is finished and the ambient temperature of the explosion-proof bin body 1 is recovered to the normal temperature state, the residues are cleaned, on the premise that the type, the number, the connection mode and the arrangement mode of the lithium ion batteries are not changed, the lithium ion batteries are reselected to be assembled into the lithium ion battery pack 3, but the placement position of the electric heating rod 4 needs to be adjusted, and then the second step to the fourth step are repeated;
step six: after the thermal runaway or combustion process of the lithium ion battery pack 3 is finished and the ambient temperature of the explosion-proof bin body 1 is recovered to the normal temperature state, the residues are cleaned, on the premise of not changing the type, the number, the connection mode and the arrangement mode of the lithium ion batteries, the lithium ion batteries are re-selected to be assembled into the lithium ion battery pack 3, the enclosure shell 2 with different thicknesses and thermal inertia coefficients is replaced to package the lithium ion battery pack 3, and then the second step to the fifth step are repeated;
step seven: after the thermal runaway or combustion process of the lithium ion battery pack 3 is finished and the ambient temperature of the explosion-proof bin body 1 is recovered to the normal temperature state, the residues are cleaned, the type, the variety, the number, the connection mode or the arrangement mode of the lithium ion batteries are adjusted, the lithium ion batteries are reselected to be assembled into the lithium ion battery pack 3, and then the second step to the sixth step are repeated;
secondly, developing the thermal runaway and combustion experiment of the lithium ion battery pack caused by the external heat source and subjected to enclosure
The method comprises the following steps: determining the type, the type and the number of the lithium ion batteries, assembling the selected lithium ion batteries into a lithium ion battery pack 3 according to a set connection mode and an arrangement mode, mounting an electric heating rod 4 without reserving a vacant area of the lithium ion batteries, and then packaging the assembled lithium ion battery pack 3 into an enclosure shell 2;
step two: starting the electric heating plate 5 to provide a heat source for thermal runaway or combustion of the lithium ion battery pack 3;
step three: measuring the temperature data inside the lithium ion battery pack 3 through a temperature sensor 14 in the lithium ion battery gap, and closing the electric heating plate 5 until the temperature inside the lithium ion battery pack 3 reaches the temperature change range set by the experiment;
step four: recording temperature data measured by all the temperature sensors 14, and determining the temperature distribution condition in the experimental device when the lithium ion battery pack 3 is in thermal runaway or burning; measuring the heat conductivity coefficient between the lithium ion batteries by using the heat conductivity sensor 10; utilize flue gas sensor 12 to discern CO that produces in the experimental apparatus when lithium ion battery group 3 takes place thermal runaway or burning2、CO、H2And gas components such as HF; measuring the thermal radiation of flame and enclosure shell 2 when lithium ion battery pack 3 is out of control or is in combustion by using a radiant heat flow meter 13; recording the ambient temperature of the lithium ion battery pack 3 when thermal runaway or combustion occurs and the surface temperature of the enclosure shell 2 by using an infrared camera 11; measuring the mass loss of the lithium ion battery pack 3 when thermal runaway or combustion occurs by using the electronic scale 6;
step five: after the thermal runaway or combustion process of the lithium ion battery pack 3 is finished and the ambient temperature of the explosion-proof bin body 1 is recovered to the normal temperature state, the residues are cleaned, on the premise that the type, the number, the connection mode and the arrangement mode of the lithium ion batteries are not changed, the lithium ion batteries are reselected to be assembled into the lithium ion battery pack 3, but the heating position of the electric heating plate 5 needs to be adjusted, and then the second step to the fourth step are repeated;
step six: after the thermal runaway or combustion process of the lithium ion battery pack 3 is finished and the ambient temperature of the explosion-proof bin body 1 is recovered to the normal temperature state, the residues are cleaned, on the premise of not changing the type, the number, the connection mode and the arrangement mode of the lithium ion batteries, the lithium ion batteries are re-selected to be assembled into the lithium ion battery pack 3, the enclosure shell 2 with different thicknesses and thermal inertia coefficients is replaced to package the lithium ion battery pack 3, and then the second step to the fifth step are repeated;
step seven: after the thermal runaway or combustion process of the lithium ion battery pack 3 is finished and the ambient temperature of the explosion-proof bin body 1 is recovered to the normal temperature state, the residues are cleaned, the type, the variety, the number, the connection mode or the arrangement mode of the lithium ion batteries are adjusted, the lithium ion batteries are reselected to be assembled into the lithium ion battery pack 3, and then the second step to the sixth step are repeated.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a lithium ion battery group heat abuse experimental apparatus who is enclosed and keeps off which characterized in that: comprises an explosion-proof bin body, a surrounding baffle shell, a lithium ion battery pack, an electric heating rod, an electric heating plate and an electronic scale; an observation window is arranged on the explosion-proof bin body, and a ventilation system for keeping the air in the bin to circulate is also arranged in the explosion-proof bin body; the electronic scale is positioned in the anti-explosion bin body and is arranged on a bottom plate of the anti-explosion bin body; the electric heating plate is of an L-shaped structure, the electric heating plate fixing frame is arranged on the electronic scale, and the enclosure shell is placed on the electric heating plate; the lithium ion battery pack is packaged in the enclosure shell, a lithium ion battery vacant area is arranged in the lithium ion battery pack, and the electric heating rod is located in the lithium ion battery vacant area.
2. The enclosed lithium ion battery pack abuse heat experimental device according to claim 1, wherein: the enclosure shell comprises a battery storage box and a sealing cover, and the battery storage box and the sealing cover are combined to form a complete enclosure shell; the lithium ion battery pack is positioned inside the battery storage box.
3. The enclosed lithium ion battery pack abuse heat experimental device according to claim 1, wherein: temperature sensors are arranged outside the enclosure shell, in the gap inside the enclosure shell and in the lithium ion battery gap of the lithium ion battery pack, and the temperature sensors adopt K-type armored thermocouples.
4. The enclosed lithium ion battery pack abuse heat experimental device according to claim 3, wherein: and a heat conduction sensor is arranged between the lithium ion battery contact surfaces of the lithium ion battery pack.
5. The enclosed lithium ion battery pack abuse heat experimental device according to claim 4, wherein: an infrared camera is erected outside an observation window of the explosion-proof bin body, and a flue gas sensor and a radiant heat flow meter are arranged inside the explosion-proof bin body.
6. The enclosed lithium ion battery pack abuse heat experimental device according to claim 5, wherein: a computer, a data collector and a controller are arranged outside the explosion-proof bin body, the data output ends of the temperature sensor, the heat conduction sensor, the smoke sensor, the radiant heat flowmeter and the electronic scale are all electrically connected with the data collector, and the data collector is electrically connected with the computer; the control ends of the electric heating rod and the electric heating plate are electrically connected with a controller, and the controller is electrically connected with a computer.
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| CN202021654464.1U CN212277297U (en) | 2020-08-11 | 2020-08-11 | Lithium ion battery pack heat abuse experimental device with enclosure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864283A (en) * | 2020-08-11 | 2020-10-30 | 东北大学 | Enclosed lithium ion battery pack heat abuse experimental device and method |
| CN114441049A (en) * | 2022-02-10 | 2022-05-06 | 山东钢铁股份有限公司 | Real-time temperature monitoring device for synchronous motor |
-
2020
- 2020-08-11 CN CN202021654464.1U patent/CN212277297U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864283A (en) * | 2020-08-11 | 2020-10-30 | 东北大学 | Enclosed lithium ion battery pack heat abuse experimental device and method |
| CN114441049A (en) * | 2022-02-10 | 2022-05-06 | 山东钢铁股份有限公司 | Real-time temperature monitoring device for synchronous motor |
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