CN115097323A - Lithium ion battery thermal runaway testing arrangement - Google Patents
Lithium ion battery thermal runaway testing arrangement Download PDFInfo
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- CN115097323A CN115097323A CN202210616840.5A CN202210616840A CN115097323A CN 115097323 A CN115097323 A CN 115097323A CN 202210616840 A CN202210616840 A CN 202210616840A CN 115097323 A CN115097323 A CN 115097323A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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Abstract
The invention relates to the technical field of lithium ion battery production, and discloses a lithium ion battery thermal runaway testing device which comprises a testing box, wherein an opening is formed in the middle shaft of the top of the testing box, a box door is arranged at the opening of the testing box, the right side of the box door is hinged to the outer surface of the testing box through a hinge piece, one end, far away from the hinge piece, of the box door is movably connected with the outer surface of the testing box through a buckle, and a connecting cylinder is communicated with the middle shaft of the bottom of the testing box. This lithium ion battery thermal runaway testing arrangement, when lithium ion battery inside produced the great amount of heat, the thermal sensitive pipe can be under thermal effect, takes place the inflation repeatedly, and then can make the stifled strip of preventing take place to remove under the effect of arc carriage release lever, and then the flue gas that lithium ion battery produced can enter into the inside of test bag, and it can take place the inflation under the effect of flue gas extrusion, and then can come the thermal runaway degree of confirming lithium ion battery according to the inflation degree of test bag.
Description
Technical Field
The invention relates to the technical field of lithium ion battery production, in particular to a thermal runaway testing device for a lithium ion battery.
Background
The lithium ion battery is widely applied to electric automobiles as an energy storage battery with higher energy density at present, and the electric automobiles develop rapidly in recent years, but the development of the electric automobiles is restricted due to frequent battery safety problems. Due to the properties of the lithium ion battery, heat accumulation is easily caused in the processes of charging, discharging and using, a large amount of heat is generated under abnormal use environmental conditions such as mechanical abuse, thermal abuse and electric abuse, thermal runaway occurs, a large amount of combustible smoke is generated, the smoke can cause spontaneous combustion and explosion of the battery, and the life and property safety of people is seriously threatened.
In order to better study the gas eruption behavior in the thermal runaway and thermal spread process of the battery module of the electric automobile, a testing device is required to detect the dynamic parameters in the thermal runaway gas eruption process of the battery module under the thermal runaway environment in a simulated battery pack, and the smoke generated by the lithium ion battery is toxic and harmful gas, and if the smoke is not processed, the smoke is directly discharged into the air, so that the life safety of workers can be harmed.
Disclosure of Invention
The invention aims to provide a thermal runaway testing device for a lithium ion battery, which is used for solving the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a lithium ion battery thermal runaway testing arrangement, includes the test box, the top axis department opening setting of test box, the test box opening part is provided with the chamber door, it is articulated with the surface of test box that the articulated elements is passed through on the right side of chamber door, the surface swing joint of buckle and test box is passed through to the one end that the articulated elements was kept away from to the chamber door, the bottom axis department intercommunication of test box is provided with the connecting cylinder, the one end intercommunication that the surface of test box bottom was kept away from to the connecting cylinder is provided with the liquid storage plate, the setting is drawn empty to the inside of liquid storage plate, the top at both ends communicates respectively about the liquid storage plate is provided with the inlet tube, it is provided with the test bag to communicate respectively on the lateral wall at both ends about the test box, set up through the gas pipe intercommunication between test bag and the connecting cylinder.
Preferably, the inside of test box is provided with the heat-conducting plate, the bottom side surface fixedly connected with heat-sensitive pipe of heat-conducting plate, the one end that the heat-conducting plate surface was kept away from to the heat-sensitive pipe and the bottom side inner wall fixed connection of test box, the left and right sides surface of heat-sensitive pipe is fixedly connected with arc carriage release lever respectively, the one end fixedly connected with that the heat-sensitive pipe was kept away from to the arc carriage release lever prevents stifled strip, the surface of preventing stifled strip sets up with the surface contact of heat-conducting plate, the surface of preventing stifled strip sets up with the inner wall contact of test box, prevent stifled strip initial position and face the intercommunication department of test bag and test box.
Preferably, prevent that the one end fixedly connected with arc catch bar that the arc carriage release lever was kept away from to the putty, it has the arc swinging arms to articulate on the inner wall of chamber door, the arc swinging arms faces the one end setting that the arc catch bar was kept away from to prevent the putty, two through elasticity strip fixed connection between the arc swinging arms, the one end fixedly connected with auxiliary straight-bar of chamber door is kept away from to the arc swinging arms, the broken tooth of bottom side surface fixedly connected with a plurality of auxiliary straight-bar.
Preferably, an extrusion cavity is formed in the side wall of the test box, extrusion rods are slidably arranged at the left end and the right end of the extrusion cavity respectively, the outer surfaces of the two extrusion rods are fixedly connected with special-shaped pull rods respectively, and one ends, far away from the extrusion rods, of the two special-shaped pull rods are fixedly connected with the outer surfaces of the two anti-blocking strips respectively.
Preferably, both ends surface device department slides respectively about the test box and is provided with T type pole, the surface fixed connection that the horizontal pole on the T type pole passes through spring and test box, vertical pole on the T type pole slides and runs through the inside in extrusion chamber, horizontal pole surface axis department on the T type pole articulates there is the arc dwang, the surface axis department fixedly connected with reset spring of arc dwang, reset spring keeps away from the one end of arc dwang and the surface fixed connection of test box, the one end fixedly connected with extrusion straight-bar of T type pole is kept away from to the arc dwang, the surface contact setting of surface and test bag of extrusion straight-bar.
Preferably, a rotating rod is arranged at the middle shaft in the connecting cylinder, the rotating rod penetrates through the bottom wall of the test box and extends to the inside of the extrusion cavity, and the extending part of the rotating rod is rotatably connected with the inner wall of the test box through a bearing.
Preferably, an arc-shaped airflow plate is fixedly connected to the outer surface of one end of the rotating rod, which is located inside the extrusion cavity, wherein the outer surface of the arc-shaped airflow plate is in contact with the inner wall of the extrusion cavity.
Preferably, the outer surface of one end of the rotating rod, which is located on the connecting cylinder, is fixedly connected with a plurality of centrifugal springs, and one ends of the centrifugal springs, which are far away from the rotating rod, are respectively and fixedly connected with the impact stirring rod.
Preferably, the outer surface of the impact stirring rod is arranged in contact with the inner wall of the connecting cylinder.
Compared with the prior art, the invention has the beneficial effects that:
(1) this lithium ion battery thermal runaway testing arrangement, when lithium ion battery is inside when producing a large amount of heat, the thermal sensitive pipe can be under thermal effect, takes place the inflation repeatedly, and then can make the stifled strip of preventing take place to remove under the effect of arc carriage release lever, and then the flue gas that lithium ion battery produced can enter into the inside of test bag, and it can take place the inflation under the effect of flue gas extrusion force, and then can confirm lithium ion battery's thermal runaway degree according to the inflation degree of test bag.
(2) This lithium ion battery thermal runaway testing arrangement, at the in-process that prevents that stifled strip removes, can make the extrusion stem remove along the inner wall in extrusion chamber under the effect of dysmorphism pull rod, and then can extrude the promotion to the flue gas, under this effect, can make the quick inside that enters into the test bag of flue gas, and then strengthened the device to lithium ion battery's test effect.
(3) This lithium ion battery thermal runaway testing arrangement, at the in-process that prevents that the stifled strip removes, can make arc push rod strike the arc swinging arms, and then can make the arc swinging arms take place to remove under the effect of striking force, can make broken tooth carry out broken handle to the surface of battery inflation under the effect of supplementary straight-bar with this, prevent that its inflation degree is too big and the emergence is exploded, and simultaneously, can make lithium ion battery take place the side to move under the effect of its swinging forces, and then under this effect, can strengthen the crushing effect of the device to lithium ion battery surface.
(4) This lithium ion battery thermal runaway testing arrangement at the in-process that the stripper bar removed, can extrude the flue gas, and the flue gas can be to the extrusion force of a lateral side of arc air current board under the effect of extrusion force, can make arc air current board drive the bull stick and take place to rotate under the effect of extrusion force, and then at the centrifugal force that rotates the in-process and produce, can make the centrifugal spring drive the striking puddler and stir the inside of reaction liquid, and then strengthen the reaction effect of reaction liquid and flue gas.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall construction of the present invention;
FIG. 3 is an enlarged view of A of FIG. 2 according to the present invention;
FIG. 4 is a schematic diagram of the overall structure of the heat-conducting plate of the present invention;
FIG. 5 is a schematic view of the overall structure of the test bladder of the present invention;
FIG. 6 is a schematic view of the overall structure of the T-bar of the present invention;
FIG. 7 is an enlarged view of B of FIG. 6 according to the present invention.
In the figure: 1. a test box; 11. a box door; 12. a communicating cylinder; 13. a liquid storage plate; 14. a liquid inlet pipe; 2. testing the capsule; 21. a gas pipe; 3. a heat conducting plate; 31. a heat-sensitive tube; 32. an arc-shaped moving rod; 33. an anti-blocking strip; 4. an arc-shaped push rod; 41. an arc-shaped oscillating lever; 42. an elastic strip; 43. an auxiliary straight rod; 44. crushing teeth; 5. an extrusion chamber; 51. an extrusion stem; 52. a special-shaped pull rod; 6. a T-shaped rod; 61. an arc-shaped rotating rod; 62. a reset spring; 63. extruding a straight rod; 7. a rotating rod; 8. an arc-shaped airflow plate; 9. a centrifugal spring; 91. striking the stirring rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a lithium ion battery thermal runaway testing arrangement, including test box 1, the purpose that sets up like this is in order to facilitate testing lithium ion battery, the top axis department opening setting of test box 1, the purpose that sets up like this is in order to facilitate placing lithium ion battery, test box 1 opening part is provided with chamber door 11, the purpose that sets up like this is in order to facilitate making whole device be in encapsulated situation, the right side of chamber door 11 is articulated through articulated elements and test box 1's surface, the purpose that sets up like this is in order to facilitate opening of chamber door 11, the one end that chamber door 11 keeps away from the articulated elements passes through buckle and test box 1's surface swing joint, the purpose that sets up like this is in order to facilitate opening of chamber door 11, bottom axis department intercommunication of test box 1 is provided with connecting cylinder 12, the purpose that sets up like this is in order to facilitate the conduction to its flue gas, connecting cylinder 12 is provided with liquid storage plate 13 in the one end intercommunication of keeping away from test box 1 bottom surface, the purpose that sets up like this is for facilitating handling the flue gas, the inside of liquid storage plate 13 is hollowed out and is set up, the purpose that sets up like this is for facilitating the storage reaction liquid, the top at both ends communicates respectively about liquid storage plate 13 and is provided with inlet line 14, the purpose that sets up like this is for facilitating the entering of reaction liquid, it is provided with test bag 2 to communicate respectively on the lateral wall at both ends about test box 1, the purpose that sets up like this is for facilitating the measuring how much of flue gas, set up through gas pipe 21 intercommunication between test bag 2 and the connecting cylinder 12, the purpose that sets up like this is for facilitating the conduction flue gas.
Preferably, in this embodiment, in order to facilitate utilization of heat generated during a test process thereof, the heat conducting plate 3 is disposed inside the test box 1, and is disposed to facilitate heat conduction, the heat sensitive tube 31 is fixedly connected to an outer surface of a bottom side of the heat conducting plate 3, and is disposed to facilitate utilization of heat, one end of the heat sensitive tube 31, which is away from the outer surface of the heat conducting plate 3, is fixedly connected to an inner wall of the bottom side of the test box 1, and is disposed to facilitate fixation of the heat sensitive tube 31, the outer surfaces of left and right sides of the heat sensitive tube 31 are respectively and fixedly connected with the arc moving rods 32, and is disposed to facilitate utilization of deformation of the heat sensitive tube 31, one end of the arc moving rod 32, which is away from the heat sensitive tube 31, is fixedly connected with the anti-blocking strip 33, and is disposed to facilitate anti-blocking, and the outer surface of the anti-blocking strip 33 is in contact with the outer surface of the heat conducting plate 3, the purpose of setting so is for the convenience of the removal of anti-blocking strip 33, and the surface of anti-blocking strip 33 and the inner wall contact setting of test box 1, and the purpose of setting so is for the convenience of the removal of anti-blocking strip 33, and anti-blocking strip 33 initial position is just facing to the intercommunication department of test bag 2 and test box 1, and the purpose of setting so is for the convenience of carrying out anti-blocking treatment to the flue gas.
Preferably, in this embodiment, in order to facilitate the transmission of the pulling force, an end of the anti-blocking strip 33, which is far away from the arc moving rod 32, is fixedly connected with the arc pushing rod 4, and the purpose of the setting is to facilitate pushing the arc swinging rod 41, and the inner wall of the box door 11 is hinged with the arc swinging rod 41, and the purpose of the setting is to facilitate the rotation of the arc swinging rod 41, and the arc swinging rod 41 is arranged opposite to the end of the arc pushing rod 4, which is far away from the anti-blocking strip 33. The purpose that sets up like this is for the convenience to promote arc swinging arms 41, through elastic strip 42 fixed connection between two arc swinging arms 41, the purpose that sets up like this is for the convenience of the quick reset of arc swinging arms 41, arc swinging arms 41 keeps away from the supplementary straight-bar 43 of one end fixedly connected with of chamber door 11, the purpose that sets up like this is for the convenience to set up broken tooth 44, the broken tooth 44 of bottom side surface fixedly connected with of supplementary straight-bar 43 a plurality of, the purpose that sets up like this is for the convenience to cut broken the processing to the inflation portion of lithium ion battery surface.
Preferably, in this embodiment, in order to extrude the flue gas, an extrusion cavity 5 is arranged inside a side wall of the testing box 1, the purpose of the arrangement is to facilitate the entry of the flue gas, extrusion rods 51 are respectively slidably arranged at left and right ends of the extrusion cavity 5, the purpose of the arrangement is to facilitate the movement of the extrusion rods 51, special-shaped pull rods 52 are respectively and fixedly connected to outer surfaces of the two extrusion rods 51, the purpose of the arrangement is to facilitate the movement of the extrusion rods 51, wherein one ends, far away from the extrusion rods 51, of the two special-shaped pull rods 52 are respectively and fixedly connected to outer surfaces of the two anti-blocking strips 33, and the purpose of the arrangement is to facilitate the fixation of the special-shaped pull rods 52.
Preferably, in this embodiment, in order to facilitate the utilization of the extrusion force generated when the extrusion rod 51 moves, the T-shaped rods 6 are respectively slidably disposed on the outer surfaces of the left and right ends of the test box 1, and are arranged to facilitate the movement of the T-shaped rods 6, the cross rod on the T-shaped rod 6 is fixedly connected to the outer surface of the test box 1 through a spring, and is arranged to facilitate the quick return of the T-shaped rods 6, the vertical rod on the T-shaped rod 6 slidably penetrates through the extrusion cavity 5, and is arranged to facilitate the utilization of the extrusion force of the extrusion rod 51, the arc-shaped rotation rod 61 is hinged to the outer surface center axis of the cross rod on the T-shaped rod 6, and is arranged to facilitate the rotation of the arc-shaped rotation rod 61, the outer surface center axis of the arc-shaped rotation rod 61 is fixedly connected with the return spring 62, and is arranged to facilitate the quick return of the arc-shaped rotation rod 61, reset spring 62 and keep away from the one end of arc dwang 61 and the outer fixed surface of test box 1 and be connected, the purpose that sets up like this is for the convenience of fixing reset spring 62, and the one end fixedly connected with extrusion straight-bar 63 of T type pole 6 is kept away from to arc dwang 61, and the purpose that sets up like this is for the convenience of extrudeing test bag 2, and the surface contact of extrusion straight-bar 63 and test bag 2 sets up, and the purpose that sets up like this is for the convenience of extruding test bag 2.
Preferably, in this embodiment, in order to facilitate the utilization of the extrusion force of the flue gas, a rotating rod 7 is disposed at the inner central axis of the connecting cylinder 12, and is disposed so as to facilitate the rotation of the rotating rod 7, the rotating rod 7 penetrates through the bottom wall of the testing box 1 and extends to the inside of the extrusion chamber 5, and is disposed so as to facilitate the stirring of the reaction liquid, the extending portion of the rotating rod 7 is rotatably connected with the inner wall of the testing box 1 through a bearing, and is disposed so as to facilitate the rotation of the rotating rod 7.
Preferably, in the embodiment, in order to facilitate utilization of the air flow, an arc-shaped air flow plate 8 is fixedly connected to an outer surface of one end of the rotating rod 7, which is located inside the extrusion chamber 5, and is arranged to facilitate utilization of a pushing force of the air flow, wherein an outer surface of the arc-shaped air flow plate 8 is arranged in contact with an inner wall of the extrusion chamber 5 and is arranged to facilitate rotation of the arc-shaped air flow plate 8.
Preferably, in this embodiment, in order to facilitate utilization of centrifugal force generated when the rotating rod 7 rotates, a plurality of centrifugal springs 9 are fixedly connected to an outer surface of one end of the rotating rod 7, which is located at the connecting cylinder 12, and are arranged to facilitate utilization of centrifugal force, and one ends of the plurality of centrifugal springs 9, which are far away from the rotating rod 7, are respectively and fixedly connected to the striking stirring rods 91, and are arranged to facilitate arrangement of the striking stirring rods 91.
Preferably, in the present embodiment, in order to facilitate the rotation of the striking pin 91, the outer surface of the striking pin 91 is disposed in contact with the inner wall of the connecting cylinder 12, and this is provided for facilitating the rotation of the striking pin 91.
The working principle is as follows:
the staff can place the lithium ion battery inside the test box 1 by opening the box door 11, and then achieve the purpose of testing the battery, and simultaneously add the reaction liquid inside the liquid storage plate 13 through the liquid inlet pipe 14, and achieve the purpose of processing the flue gas, the processed flue gas can be discharged out of the device through the liquid inlet pipe 14, when the lithium ion battery generates a large amount of heat inside, the heat sensitive pipe 31 can expand repeatedly under the effect of heat, and then the anti-blocking strip 33 can move under the action of the arc-shaped moving rod 32, and further the flue gas generated by the lithium ion battery can enter the inside of the test bag 2, and can expand under the action of the extrusion force of the flue gas, and then the thermal runaway degree of the lithium ion battery can be determined according to the expansion degree of the test bag 2, and secondly, in the process of the movement of the anti-blocking strip 33, the extrusion rod 51 can move along the inner wall of the extrusion cavity 5 under the action of the special-shaped pull rod 52, and then can push the flue gas, under this effect, can make the quick inside that enters into test bag 2 of flue gas, and then strengthened the device to lithium ion battery's test effect.
Meanwhile, in the moving process of the anti-blocking strip 33, the arc-shaped push rod 4 can impact the arc-shaped oscillating rod 41, and then the arc-shaped oscillating rod 41 can move under the action of the impact force, so that the crushing teeth 44 can crush the expanded outer surface of the battery under the action of the auxiliary straight rod 43 to prevent the battery from being exploded due to too large expansion degree, meanwhile, the lithium ion battery can move laterally under the action of the oscillating force, and further under the effect, the crushing effect of the device on the surface of the lithium ion battery can be enhanced, secondly, in the moving process of the extrusion rod 51, the flue gas can be extruded, under the action of the extrusion force, the flue gas can extrude the arc-shaped airflow plate 8 in a lateral direction, under the action of the extrusion force, the arc-shaped airflow plate 8 can drive the rotating rod 7 to rotate, and further generate centrifugal force in the rotating process, the centrifugal spring 9 can drive the impact stirring rod 91 to stir the inside of the reaction liquid, so that the reaction effect of the reaction liquid and the flue gas is enhanced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a lithium ion battery thermal runaway testing arrangement, includes test box (1), its characterized in that: the testing box is characterized in that an opening is formed in the middle shaft of the top of the testing box (1), a box door (11) is arranged at the opening of the testing box (1), the right side of the box door (11) is hinged to the outer surface of the testing box (1) through a hinge piece, and one end, far away from the hinge piece, of the box door (11) is movably connected with the outer surface of the testing box (1) through a buckle;
a connecting cylinder (12) is communicated with a bottom center shaft of the test box (1), one end, away from the outer surface of the bottom of the test box (1), of the connecting cylinder (12) is communicated with a liquid storage plate (13), the liquid storage plate (13) is hollowed out, and liquid inlet pipes (14) are respectively communicated with the tops of the left end and the right end of the liquid storage plate (13);
the testing box is characterized in that the side walls at the left end and the right end of the testing box (1) are respectively provided with a testing bag (2) in a communicated mode, and the testing bags (2) and the connecting cylinders (12) are communicated through gas pipes (21).
2. The thermal runaway testing device for the lithium ion battery according to claim 1, characterized in that: a heat-conducting plate (3) is arranged in the test box (1), a heat-sensitive tube (31) is fixedly connected to the outer surface of the bottom side of the heat-conducting plate (3), and one end, far away from the outer surface of the heat-conducting plate (3), of the heat-sensitive tube (31) is fixedly connected with the inner wall of the bottom side of the test box (1);
the outer surfaces of the left side and the right side of the heat-sensitive tube (31) are respectively fixedly connected with an arc-shaped moving rod (32), one end, far away from the heat-sensitive tube (31), of the arc-shaped moving rod (32) is fixedly connected with an anti-blocking strip (33), the outer surface of the anti-blocking strip (33) is arranged in contact with the outer surface of the heat-conducting plate (3), and the outer surface of the anti-blocking strip (33) is arranged in contact with the inner wall of the test box (1);
the initial position of the anti-blocking strip (33) is right opposite to the communication part of the test bag (2) and the test box (1).
3. The lithium ion battery thermal runaway testing device of claim 2, wherein: an arc-shaped push rod (4) is fixedly connected to one end, far away from the arc-shaped moving rod (32), of the anti-blocking strip (33), an arc-shaped swinging rod (41) is hinged to the inner wall of the box door (11), and the arc-shaped swinging rod (41) is arranged opposite to one end, far away from the anti-blocking strip (33), of the arc-shaped push rod (4);
the two arc-shaped swinging rods (41) are fixedly connected through an elastic strip (42), one end, far away from the box door (11), of each arc-shaped swinging rod (41) is fixedly connected with an auxiliary straight rod (43), and the outer surface of the bottom side of each auxiliary straight rod (43) is fixedly connected with a plurality of crushing teeth (44).
4. The lithium ion battery thermal runaway testing device of claim 3, wherein: an extrusion cavity (5) is formed in the side wall of the test box (1), extrusion rods (51) are arranged at the left end and the right end of the extrusion cavity (5) in a sliding mode respectively, and special-shaped pull rods (52) are fixedly connected to the outer surfaces of the two extrusion rods (51) respectively;
one ends of the two special-shaped pull rods (52) far away from the extrusion rod (51) are respectively fixedly connected with the outer surfaces of the two anti-blocking strips (33).
5. The lithium ion battery thermal runaway testing device of claim 4, wherein: the outer surface devices at the left end and the right end of the test box (1) are respectively provided with a T-shaped rod (6) in a sliding manner, a cross rod on the T-shaped rod (6) is fixedly connected with the outer surface of the test box (1) through a spring, and a vertical rod on the T-shaped rod (6) penetrates through the inside of the extrusion cavity (5) in a sliding manner;
an arc-shaped rotating rod (61) is hinged to the middle shaft of the outer surface of a cross rod on the T-shaped rod (6), a reset spring (62) is fixedly connected to the middle shaft of the outer surface of the arc-shaped rotating rod (61), and one end, far away from the arc-shaped rotating rod (61), of the reset spring (62) is fixedly connected with the outer surface of the test box (1);
one end fixedly connected with extrusion straight-bar (63) of T type pole (6) is kept away from in arc dwang (61), the surface of extrusion straight-bar (63) sets up with the surface contact of test bag (2).
6. The lithium ion battery thermal runaway testing device of claim 5, wherein: a rotating rod (7) is arranged at the middle shaft in the connecting cylinder (12), the rotating rod (7) penetrates through the bottom wall of the testing box (1) and extends to the inside of the extrusion cavity (5), and the extending part of the rotating rod (7) is rotatably connected with the inner wall of the testing box (1) through a bearing.
7. The lithium ion battery thermal runaway testing device of claim 6, wherein: the outer surface of one end of the rotating rod (7) positioned in the extrusion cavity (5) is fixedly connected with an arc airflow plate (8);
wherein, the outer surface of the arc-shaped airflow plate (8) is arranged in contact with the inner wall of the extrusion cavity (5).
8. The lithium ion battery thermal runaway testing device of claim 7, wherein: the outer surface of one end, located at the connecting cylinder (12), of the rotating rod (7) is fixedly connected with a plurality of centrifugal springs (9), and one ends, far away from the rotating rod (7), of the centrifugal springs (9) are respectively and fixedly connected with impact stirring rods (91).
9. The lithium ion battery thermal runaway testing device of claim 8, wherein: the outer surface of the impact stirring rod (91) is in contact with the inner wall of the connecting cylinder (12).
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| CN202210616840.5A CN115097323A (en) | 2022-06-01 | 2022-06-01 | Lithium ion battery thermal runaway testing arrangement |
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| CN202210616840.5A CN115097323A (en) | 2022-06-01 | 2022-06-01 | Lithium ion battery thermal runaway testing arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116296877A (en) * | 2023-05-19 | 2023-06-23 | 苏州精控能源科技有限公司 | Method and device for detecting quality of energy storage battery pack box body |
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| CN116296877B (en) * | 2023-05-19 | 2023-07-25 | 苏州精控能源科技有限公司 | Method and device for detecting quality of energy storage battery pack box body |
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