New energy battery high-temperature explosion-proof test device and use method thereof

Abstract

The invention discloses a new energy battery high-temperature explosion-proof test device and a use method thereof, and belongs to the technical field of battery production. A controller is arranged on the outer side of the test box; a plurality of exhaust holes are formed in the upper surface of the test box; a gas buffering and discharging mechanism is arranged at the top of the test box; a pressure monitoring module and a heating module are arranged on the inner wall of the test box; the open end is blocked by a sealing door; and the gas buffering and discharging mechanism is arranged on the outer sides of the plurality of vent holes. The method comprises: placing and positioning a battery; closing the sealing door; the controller starts a heating module to heat the new energy battery; the pressure monitoring module is used for monitoring the interior of the test box; when the battery is spontaneously ignited or exploded, the air pressure in the test box is increased, the air pressure pushes the sealing plug to slide upwards from the exhaust hole, the sealing plate is higher than the exhaust groove, and gas in the test box is exhausted from the exhaust groove. The gas buffering and discharging mechanism ensures that air pressure in the test box is slowly discharged, casualties possibly caused by instant release of high-pressure gas are avoided, and the safety of the test process is improved.

Description

Technical Field

[0001] The invention relates to a new energy battery high temperature explosion-proof test device and a use method thereof, belonging to the technical field of battery production. Background Art

[0002] Before batteries are put on the market, they must undergo rigorous high-temperature explosion-proof testing to reduce the risk of accidents caused by spontaneous combustion or explosion of batteries in actual applications. The existing high-temperature explosion-proof testing equipment for new energy batteries has the following defects:

[0003] 1. When new energy batteries spontaneously combust or explode during testing, the air pressure inside the test chamber will rise sharply. Since the current test device lacks an effective air pressure buffer mechanism, these high-pressure gases are directly discharged into the external environment, which may not only pose a safety threat to the test personnel, but also damage the surrounding environment, posing a serious safety hazard.

[0004] 2. In explosion-proof tests, batteries are usually placed directly in the test chamber for testing. If a small-scale explosion occurs in the battery, due to the lack of necessary fixing and protection measures, battery fragments may fly everywhere, which may not only damage the test equipment, but also interfere with the collection and analysis of test data, thereby affecting the accuracy and reliability of the final test results.

[0005] 3. During the test, the opening and closing operation of the sealed door of the existing new energy battery high temperature explosion-proof test device is not flexible and convenient. In addition, the sealed door lacks a buffer design when closing, and long-term frequent use can easily lead to problems such as wear of the sealing strip and deformation of the door body, thereby reducing the service life of the sealed door and the sealing performance of the test chamber. Summary of the invention

[0006] In order to solve the problems existing in the background technology, the present invention provides a new energy battery high temperature explosion-proof test device and a use method thereof.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high-temperature explosion-proof test device for new energy batteries, comprising a test box, a sealed door, a controller, a gas buffer discharge mechanism, a pressure monitoring module and a heating module; the side of the test box is an open end, and the open end is blocked by a sealed door; a controller is provided on the outside of the test box, a plurality of exhaust holes are provided on the upper surface of the test box, a gas buffer discharge mechanism is provided on the top of the test box, and the gas buffer discharge mechanism is arranged on the outside of the plurality of ventilation holes; a pressure monitoring module and a heating module are provided on the inner wall of the test box.

[0008] The gas buffer discharge mechanism includes a buffer box, a hinge seat 1, a rotating plate, a hinge seat 2, a sealing plate, a buffer spring 1, a slider, a slide rod and a sealing plug; the open end of the buffer box is set downward, and the buffer box is set on the top of the test box; the upper end of the buffer box is fixedly connected to the two ends of the horizontally set slide rod, and the outer sides of the two ends of the slide rod are both equipped with sliders and buffer springs 1, each of the sliders is slidably connected to the slide rod, and one end of each buffer spring 1 is respectively against the corresponding slider, and the other end of the buffer spring 1 is against the corresponding inner wall of the buffer box; each The lower ends of the sliders are respectively fixedly connected to the corresponding hinge seat 1, each of the hinge seat 1 is respectively rotatably connected to the upper end of the corresponding rotating plate, the lower end of each rotating plate is respectively rotatably connected to the corresponding hinge seat 2, and the lower end of each hinge seat 2 is fixedly connected to the upper surface of the sealing plate, and the outer wall of the sealing plate is slidably fitted with the inner wall of the buffer box; a plurality of sealing plugs are provided on the lower surface of the sealing plate, and the plurality of sealing plugs are plug-inly arranged with the plurality of exhaust holes in a one-to-one correspondence; a plurality of exhaust grooves are provided on the side wall of the buffer box, and the plurality of exhaust grooves are located between the strokes of the sealing plate.

[0009] The inner bottom surface of the test box is provided with a battery positioning clamping mechanism.

[0010] The battery positioning and clamping mechanism comprises a motor 1, a positioning platform, a screw 1, a nut block 1, a clamping assembly, a nut block 2, a screw 2 and a worm gear assembly; the positioning platform is arranged on the inner bottom surface of the test box, and a cross groove is arranged on the upper surface of the positioning platform, the transverse groove of the cross groove is rotatably connected with the two ends of the horizontally arranged screw 2, and the outer side of the middle part of the screw 2 is coaxially fixedly sleeved with a worm wheel of the worm gear assembly; the longitudinal groove of the cross groove is rotatably connected with the two ends of the horizontally arranged screw 1, and the outer side of the middle part of the screw 1 is coaxially fixedly sleeved with a worm of the worm gear assembly; the screw 1 is driven to rotate by the motor 1, and the screw 1 and the screw 2 are both bidirectional threaded rods; the outer sides of the two ends of the screw 1 are respectively threadedly connected with the corresponding nut block 1, and the outer sides of the two ends of the screw 2 are respectively threadedly connected with the corresponding nut block 2, the two nut blocks 1 and the two nut blocks 2 are both slidably connected with the cross groove, and the upper end of each nut block 1 and the upper end of each nut block 2 are respectively connected with the corresponding clamping assembly.

[0011] Each of the clamping components includes an installation box, two buffer springs, one limit block, a clamping block and one limit groove; the installation box is fixed to the upper end of the corresponding nut block one / nut block two; the opening end of the installation box faces inward, and a plurality of horizontally arranged buffer springs two are fixed in the installation box, the outer end of each of the two buffer springs is fixedly connected to one end of the clamping block, and the other end of the clamping block is slidably arranged in the opening of the installation box, the two ends of the clamping block are respectively fixedly connected to the corresponding limit block one, and each of the limit blocks one is respectively slidably connected to the corresponding limit groove one arranged on the inner wall of the installation box.

[0012] The sealed door is connected to the test box through a sealed door switch mechanism.

[0013] The sealed door switch mechanism comprises an ear plate, a lifting rod, a second motor, a fixed ear, a mounting frame, an outer cylinder and a threaded rod; a mounting frame is fixed at the open end of the test box, and a sealing groove is provided in the middle of the mounting frame; the lower ends of the left and right side walls of the mounting frame are respectively fixedly connected with the corresponding fixing ears, and the upper ends of each of the fixing ears are respectively fixedly connected with the lower ends of the corresponding vertically arranged second motors and the lower ends of the corresponding vertically arranged outer cylinders, each of the second motors are respectively arranged inside the corresponding outer cylinders, and the output shafts of each second motors are respectively coaxially fixedly connected with the lower ends of the corresponding vertically arranged threaded rods, and the outer sides of each of the threaded rods are threadedly screwed with lifting rods, and the lower ends of each of the lifting rods are respectively slidably arranged on the inner sides of the corresponding outer cylinders, and the upper ends of the two lifting rods are fixedly connected with the corresponding ends of the ear plates, and the lower ends of the middle parts of the ear plates are fixedly connected with the upper ends of the vertically arranged sealing doors, and the lower ends of the sealing doors are slidably inserted into the sealing grooves of the mounting frame.

[0014] The inner wall of each outer cylinder is provided with two limit blocks along the vertical direction, and the outer wall of each lifting rod is provided with two limit grooves along the vertical direction. Each of the two limit blocks is respectively inserted into the corresponding two limit grooves in a matching manner.

[0015] A buffer assembly is provided on the bottom surface of the sealing groove, and the buffer assembly includes a buffer plate, a buffer spring three, a limit block three and a limit groove three; a buffer groove is provided on the bottom surface of the sealing groove, and a plurality of vertically arranged buffer springs three are fixed in the buffer groove, and the upper end of each of the buffer springs three is fixedly connected to the buffer plate, and the buffer plate is slidably arranged in the buffer groove, and the two ends of the buffer plate are respectively fixedly connected to the corresponding limit blocks three, and each of the limit blocks three is respectively slidably connected to the corresponding limit groove three arranged on the inner side wall of the buffer groove.

[0016] A method for using a new energy battery high temperature explosion-proof test device of the present invention comprises the following steps:

[0017] S1: Battery placement and positioning;

[0018] S101: The battery is placed above the middle of the cross groove of the positioning table;

[0019] S102: The motor starts and drives the screw to rotate;

[0020] S103: The screw rotates to drive the worm, the worm wheel, and the two nut blocks to move toward each other;

[0021] S104: The worm gear rotates to drive the second screw to rotate and drive the two nut blocks to move toward each other;

[0022] S105: clamping and positioning the battery by using four clamping assemblies on two nut blocks 1 and two nut blocks 2;

[0023] S2: Close the sealing door;

[0024] S201: two motors 2 are turned on synchronously, and the corresponding threaded rods are driven to rotate at the same time;

[0025] S202: The two threaded rods rotate synchronously to drive the corresponding lifting rods to descend synchronously;

[0026] S203: The two lifting rods are synchronously lowered to drive the ear plate to lower;

[0027] S204: The ear plate descends to drive the sealing door to descend in the sealing groove, thereby sealing the test chamber;

[0028] S3: The controller turns on the heating module to heat the new energy battery;

[0029] S4: The pressure monitoring module monitors the inside of the test chamber;

[0030] S5: When the battery spontaneously ignites or explodes, the air pressure in the test chamber increases, and the air pressure pushes the sealing plug to slide upward from the exhaust hole. The sealing plate is higher than the exhaust groove, and the gas inside the test chamber is discharged from the exhaust groove.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The gas buffer discharge mechanism of the present invention can ensure that the gas pressure inside the test box is slowly discharged when the new energy battery explodes or spontaneously combusts, avoiding casualties that may be caused by the instantaneous release of high-pressure gas, and improving the safety of the test process.

[0033] 2. The present invention realizes precise fixation of new energy batteries before testing through the battery positioning and clamping mechanism, thereby preventing the new energy batteries from splashing during the test, ensuring the smooth progress of the test, and reducing the safety risks that may arise during the test.

[0034] 3. The present invention is provided with a sealed door switch mechanism, which not only facilitates the opening and closing of the sealed door to cope with emergency situations such as explosion or spontaneous combustion that may occur during the test of new energy batteries, but also reduces the damage that the sealed door may suffer when dealing with such emergency situations through the built-in buffer component, thereby extending the service life of the test chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 yes Figure 1 A cross-sectional view of

[0037] Figure 3 is a structural schematic diagram of a gas buffer discharge mechanism;

[0038] Figure 4 It is a structural schematic diagram of a battery positioning and clamping mechanism;

[0039] Figure 5 It is a schematic diagram of the connection relationship between screw 1, screw 2 and the worm gear assembly;

[0040] Figure 6 is a schematic diagram of the structure of the clamping assembly;

[0041] Figure 7 It is a structural schematic diagram of the sealing door switch mechanism;

[0042] Figure 8 It is a structural diagram of the buffer component. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] A new energy battery high-temperature explosion-proof test device comprises a test box 1, a sealed door 21, a controller 3, a gas buffer discharge mechanism 5, a pressure monitoring module 6 and a heating module 7; the side of the test box 1 is an open end, and the open end is blocked by the sealed door 21; the controller 3 is fixedly provided on the outside of the test box 1, and a plurality of exhaust holes are provided on the upper surface of the test box 1 through the thickness direction thereof, and a gas buffer discharge mechanism 5 is fixedly provided on the top of the test box 1, and the gas buffer discharge mechanism 5 is arranged on the outside of the plurality of ventilation holes; the pressure monitoring module 6 and the heating module 7 are fixedly provided on the inner wall of the test box 1.

[0045] The heating module 7 and the pressure monitoring module 6 in the present invention are existing disclosed technologies, and the selected models are DB-XAB and AT8108 respectively.

[0046] The gas buffer discharge mechanism 5 includes a buffer box 51, a hinge seat 53, a rotating plate 54, a hinge seat 55, a sealing plate 56, a buffer spring 57, a slider 58, a slide bar 59 and a sealing plug 510; the open end of the buffer box 51 is set downward, and the buffer box 51 is fixedly arranged on the top of the test box 1; the upper end of the buffer box 51 is fixedly connected to the two ends of at least two horizontally arranged slide bars 59, and the outer sides of the two ends of the slide bars 59 are both equipped with sliders 58 and buffer springs 57, each of the sliders 58 is slidably connected to the slide bar 59, one end of each buffer spring 57 is respectively abutted against the corresponding slider 58, and the other end of the buffer spring 57 is respectively abutted against the corresponding inner wall of the buffer box 51; the lower end of each slider 58 is respectively fixedly connected to the corresponding hinge seat 53, and each hinge seat 53 is respectively fixed to the corresponding The upper end of the rotating plate 54 is rotatably connected, and the lower end of each of the rotating plates 54 is rotatably connected to the corresponding hinge seat 2 55, and the lower end of each of the hinge seat 2 55 is fixedly connected to the upper surface of the sealing plate 56, and the outer wall of the sealing plate 56 is slidably fitted with the inner wall of the buffer box 51; the lower surface of the sealing plate 56 is provided with a plurality of sealing plugs 510 arranged in an array, and the plurality of sealing plugs 510 are plugged and arranged in a one-to-one correspondence with the plurality of exhaust holes; the side wall of the buffer box 51 is provided with a plurality of exhaust grooves 52 through its wall thickness, and the plurality of exhaust grooves 52 are located between the strokes of the sealing plate 56, that is: when the lower surface of the sealing plate 56 is in close contact with the upper surface of the test box 1, the plurality of exhaust grooves 52 are all located above the sealing plate 56; when the sealing plate 56 is completely lifted up, the plurality of exhaust grooves 52 are all located below the sealing plate 56, to ensure that the gas in the test box 1 is effectively discharged.

[0047] A battery positioning and clamping mechanism 4 is fixedly provided on the inner bottom surface of the test box 1 .

[0048] The battery positioning and clamping mechanism 4 includes a motor 41, a positioning platform 42, a screw 43, a nut block 44, a clamping assembly 45, a nut block 46, a screw 48 and a worm gear assembly; the positioning platform 42 is fixedly arranged on the inner bottom surface of the test box 1, and a cross groove is arranged on the upper surface of the positioning platform 42, and the transverse groove of the cross groove is rotatably connected with the two ends of the horizontally arranged screw 48 through a bearing, and the outer side of the middle part of the screw 48 is coaxially fixed with a worm wheel 49 of the worm gear assembly; the longitudinal groove of the cross groove is rotatably connected with the two ends of the horizontally arranged screw 43 through a bearing, and the outer side of the middle part of the screw 43 is coaxially fixed A worm 47 is provided with a worm gear assembly; a screw 43 is driven to rotate by a motor 41, and the motor 41 is fixed on a positioning platform 42 through a mounting seat. This is a prior art and will not be described in detail. The screw 43 and the screw 48 are both bidirectional threaded rods; the outer sides of both ends of the screw 43 are respectively threadedly connected to the corresponding nut block 44, and the outer sides of both ends of the screw 48 are respectively threadedly connected to the corresponding nut block 46. The two nut blocks 44 and the two nut blocks 46 are both slidably connected to the cross grooves, and the upper end of each nut block 44 and the upper end of each nut block 46 are respectively fixedly connected to the corresponding clamping assembly 45.

[0049] Each of the clamping components 45 includes an installation box 451, a buffer spring 452, a limit block 453, a clamping block 454 and a limit groove 455; the installation box 451 is fixed to the upper end of the corresponding nut block 44 / nut block 46; the opening end of the installation box 451 faces inward, and a plurality of horizontally arranged buffer springs 452 are fixed in the installation box 451, and the outer end of each of the buffer springs 452 is fixedly connected to one end of the clamping block 454, and the other end of the clamping block 454 is slidably arranged in the opening of the installation box 451, and the left and right ends of the clamping block 454 are respectively fixedly connected to the corresponding limit block 453, and each of the limit blocks 453 is respectively slidably connected to the corresponding limit groove 455 arranged on the inner wall of the installation box 451.

[0050] The sealing door 21 is connected to the test box 1 via the sealing door switch mechanism 2 .

[0051] The sealed door switch mechanism 2 includes an ear plate 22, a lifting rod 23, a motor 26, a fixing ear 27, a mounting frame 210, an outer cylinder 211 and a threaded rod 212; the opening end of the test box 1 is fixed with a mounting frame 210, and the middle part of the mounting frame 210 is provided with a sealing groove 29 penetrating its upper surface along the vertical direction; the lower ends of the left and right side walls of the mounting frame 210 are respectively fixedly connected to the corresponding fixing ears 27, and the upper end of each fixing ear 27 is respectively fixedly connected to the lower end of the corresponding vertically arranged motor 26 and the lower end of the corresponding vertically arranged outer cylinder 211, and each motor The motors 26 are respectively arranged inside the corresponding outer cylinders 211, and the output shafts of each motor 26 are respectively coaxially fixedly connected with the lower ends of the corresponding vertically arranged threaded rods 212. The outer sides of each of the threaded rods 212 are threadedly screwed with lifting rods 23, and the lower ends of each of the lifting rods 23 are respectively slidably arranged on the inner sides of the corresponding outer cylinders 211. The upper ends of the two lifting rods 23 are fixedly connected with the corresponding ends of the ear plates 22, and the lower ends of the middle parts of the ear plates 22 are fixedly connected with the upper ends of the vertically arranged sealing doors 21, and the lower ends of the sealing doors 21 are slidably inserted into the sealing grooves 29 of the mounting frame 210.

[0052] The inner wall of each outer cylinder 211 is provided with a limit block 25 in the vertical direction, and the outer wall of each lifting rod 23 is provided with a limit groove 24 in the vertical direction. Each limit block 25 is respectively and matchingly inserted into the corresponding limit groove 24, thereby improving the stability of the lifting rod 23 during the lifting process.

[0053] A buffer assembly 28 is provided on the bottom surface of the sealing groove 29, and the buffer assembly 28 includes a buffer plate 281, a buffer spring three 282, a limit block three 283 and a limit groove three 284; a buffer groove is provided on the bottom surface of the sealing groove 29, and a plurality of vertically arranged buffer springs three 282 are fixed in the buffer groove, and the upper end of each of the buffer springs three 282 is fixedly connected to the buffer plate 281, and the buffer plate 281 is slidably arranged in the buffer groove, and the left and right ends of the buffer plate 281 are respectively fixedly connected to the corresponding limit blocks three 283, and each of the limit blocks three 283 is respectively slidably connected to the corresponding limit groove three 284 arranged on the inner side wall of the buffer groove.

[0054] A method for using a new energy battery high temperature explosion-proof test device of the present invention comprises the following steps:

[0055] S1: Battery placement and positioning;

[0056] S101: The battery is placed above the middle of the cross groove of the positioning platform 42;

[0057] S102: The motor 41 is started to drive the screw 43 to rotate;

[0058] S103: The screw rod 43 rotates to drive the worm 47 to rotate, the worm wheel 49 to rotate, and the two nut blocks 44 to move toward each other;

[0059] S104: The worm wheel 49 rotates to drive the second screw rod 48 to rotate and drive the two second nut blocks 46 to move toward each other;

[0060] S105: The battery is clamped and positioned by four clamping assemblies 45 on two nut blocks 1 44 and two nut blocks 2 46;

[0061] When clamping, the clamping block 454 contacts the battery, and the buffer spring 2 452 is compressed, driving the limit block 1 453 to slide in the limit groove 1 455, thereby avoiding the problem that after the battery is clamped, the new energy batteries fixed at both ends explode without buffering, resulting in damage to the clamping assembly 45.

[0062] S2: Close the sealing door 21;

[0063] S201: The two motors 26 are turned on synchronously, and the corresponding threaded rods 212 are driven to rotate at the same time;

[0064] S202: The two threaded rods 212 rotate synchronously to drive the corresponding lifting rods 23 to descend synchronously;

[0065] S203: The two lifting rods 23 are synchronously lowered to drive the ear plate 22 to lower;

[0066] S204: the ear plate 22 descends to drive the sealing door 21 to descend in the sealing groove 29 until the lower end of the sealing door 21 contacts the buffer assembly 28, thereby sealing the test box 1;

[0067] When the sealing door 21 descends and contacts the buffer plate 281, the sealing door 21 will drive the buffer plate 281 to descend, and the descent of the buffer plate 281 will drive the buffer spring three 282 to be compressed to achieve buffering for the sealing door 21. At the same time, the descent of the buffer plate 281 will drive the limit block three 283 to slide inside the limit groove three 284, thereby improving the stability of the buffer plate 281 during its descent.

[0068] S3: The controller 3 turns on the heating module 7 to heat the new energy battery;

[0069] S4: The pressure monitoring module 6 monitors the interior of the test chamber 1;

[0070] S5: When the battery ignites or explodes, the air pressure in the test box 1 increases, and the air pressure pushes the sealing plug 510 to slide upward from the exhaust hole. The rising of the sealing plug 510 drives the sealing plate 56 to rise, and the rising of the sealing plate 56 drives the hinge seat 2 55 to rise. The rising of the hinge seat 2 55 drives the angle of the rotating plate 54 to increase, and the increase in the angle of the rotating plate 54 drives the spacing between the hinge seats 1 53 to increase. The hinge seats 1 53 move away from each other and drive the slider 58 to slide on the surface of the slide rod 59 and move away from each other. At the same time, the slider 58 drives the buffer spring 1 57 to be compressed, and the sealing plate 56 is higher than the exhaust groove 52, so that the exhaust hole and the exhaust groove 52 are connected, so that the gas inside the test box 1 can be discharged from the exhaust groove 52. At the same time, the controller 3 counts the temperature at this time.

[0071] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0072] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new energy battery high temperature explosion-proof test device, characterized in that: The invention comprises a test box (1), a sealing door (21), a controller (3), a gas buffer discharge mechanism (5), a pressure monitoring module (6) and a heating module (7); the side of the test box (1) is an open end, and the open end is blocked by the sealing door (21); the controller (3) is arranged on the outside of the test box (1), the upper surface of the test box (1) is provided with a plurality of exhaust holes, the top of the test box (1) is provided with a gas buffer discharge mechanism (5), and the gas buffer discharge mechanism (5) is arranged on the outside of the plurality of exhaust holes; the inner wall of the test box (1) is provided with a pressure monitoring module (6) and a heating module (7).

2. A new energy battery high temperature explosion-proof test device according to claim 1, characterized in that: The gas buffer discharge mechanism (5) comprises a buffer box (51), a hinge seat 1 (53), a rotating plate (54), a hinge seat 2 (55), a sealing plate (56), a buffer spring 1 (57), a slider (58), a slide bar (59) and a sealing plug (510); the opening end of the buffer box (51) is arranged downward, and the buffer box (51) is arranged on the top of the test box (1); the upper end inside the buffer box (51) is fixedly connected to the two ends of the horizontally arranged slide bar (59), and the outer sides of the two ends of the slide bar (59) are both equipped with sliders (58) and buffer springs 1 (57), each of the sliders (58) is slidably connected to the slide bar (59), one end of each buffer spring 1 (57) is respectively abutted against the corresponding slider (58), and the other end of the buffer spring 1 (57) is abutted against the buffer box ( 51); the lower end of each slider (58) is fixedly connected to the corresponding hinge seat one (53), each hinge seat one (53) is rotatably connected to the upper end of the corresponding rotating plate (54), the lower end of each rotating plate (54) is rotatably connected to the corresponding hinge seat two (55), the lower end of each hinge seat two (55) is fixedly connected to the upper surface of the sealing plate (56), and the outer wall of the sealing plate (56) is slidably fitted with the inner wall of the buffer box (51); a plurality of sealing plugs (510) are provided on the lower surface of the sealing plate (56), and the plurality of sealing plugs (510) are plugged and arranged one by one with the plurality of exhaust holes; a plurality of exhaust grooves (52) are provided on the side wall of the buffer box (51), and the plurality of exhaust grooves (52) are located between the strokes of the sealing plate (56).

3. A new energy battery high temperature explosion-proof test device according to claim 1, characterized in that: The inner bottom surface of the test box (1) is provided with a battery positioning clamping mechanism (4).

4. A new energy battery high temperature explosion-proof test device according to claim 3, characterized in that: The battery positioning and clamping mechanism (4) comprises a motor (41), a positioning platform (42), a screw (43), a nut block (44), a clamping assembly (45), a nut block (46), a screw (48) and a worm gear assembly; the positioning platform (42) is arranged on the inner bottom surface of the test box (1); the upper surface of the positioning platform (42) is provided with a cross groove; the transverse groove of the cross groove is rotatably connected to the two ends of the horizontally arranged screw (48); the outer side of the middle part of the screw (48) is coaxially fixed with a worm wheel (49) of the worm gear assembly; the longitudinal groove of the cross groove is rotatably connected to the two ends of the horizontally arranged screw (43); the screw (48) is provided ... The outer side of the middle part of the rod one (43) is coaxially fixed with a worm (47) of the worm gear assembly; the screw rod one (43) is driven to rotate by the motor one (41), and the screw rod one (43) and the screw rod two (48) are both bidirectional threaded rods; the outer sides of the two ends of the screw rod one (43) are respectively threadedly connected with the corresponding nut block one (44), and the outer sides of the two ends of the screw rod two (48) are respectively threadedly connected with the corresponding nut block two (46), the two nut blocks one (44) and the two nut blocks two (46) are both slidably connected with the cross groove, and the upper end of each nut block one (44) and the upper end of each nut block two (46) are respectively connected with the corresponding clamping assembly (45).

5. A new energy battery high temperature explosion-proof test device according to claim 4, characterized in that: Each of the clamping assemblies (45) comprises a mounting box (451), a buffer spring (452), a limit block (453), a clamping block (454) and a limit groove (455); the mounting box (451) is fixed on the upper end of the corresponding nut block (44) / nut block (46); the opening end of the mounting box (451) faces inward, and a plurality of horizontally arranged buffer springs (452) are fixed in the mounting box (451); the outer end of each of the buffer springs (452) is fixedly connected to one end of the clamping block (454), and the other end of the clamping block (454) is slidably arranged in the opening of the mounting box (451); the two ends of the clamping block (454) are respectively fixedly connected to the corresponding limit block (453), and each of the limit blocks (453) is respectively slidably connected to the corresponding limit groove (455) arranged on the inner wall of the mounting box (451).

6. A new energy battery high temperature explosion-proof test device according to claim 1, characterized in that: The sealed door (21) is connected to the test box (1) via a sealed door switch mechanism (2).

7. A new energy battery high temperature explosion-proof test device according to claim 6, characterized in that: The sealed door switch mechanism (2) comprises an ear plate (22), a lifting rod (23), a second motor (26), a fixing ear (27), a mounting frame (210), an outer cylinder (211) and a threaded rod (212); the mounting frame (210) is fixed to the open end of the test box (1), and a sealing groove (29) is provided in the middle of the mounting frame (210); the lower ends of the left and right side walls of the mounting frame (210) are respectively fixedly connected to the corresponding fixing ears (27), the upper end of each fixing ear (27) is respectively fixedly connected to the lower end of the corresponding vertically arranged second motor (26) and the lower end of the corresponding vertically arranged outer cylinder (211), and each second motor (2 6) are respectively arranged inside the corresponding outer cylinder (211), the output shaft of each motor two (26) is respectively coaxially fixedly connected with the lower end of the corresponding vertically arranged threaded rod (212), the outer side of each threaded rod (212) is threadedly screwed with a lifting rod (23), the lower end of each lifting rod (23) is respectively slidably arranged on the inner side of the corresponding outer cylinder (211), the upper ends of the two lifting rods (23) are fixedly connected to the corresponding ends of the ear plate (22), the lower end of the middle part of the ear plate (22) is fixedly connected to the upper end of the vertically arranged sealing door (21), and the lower end of the sealing door (21) is slidably inserted into the sealing groove (29) of the installation frame (210).

8. A new energy battery high temperature explosion-proof test device according to claim 7, characterized in that: The inner wall of each outer cylinder (211) is provided with a second limiting block (25) along the vertical direction, and the outer wall of each lifting rod (23) is provided with a second limiting groove (24) along the vertical direction, and each second limiting block (25) is respectively inserted into the corresponding second limiting groove (24) in a matching manner.

9. A new energy battery high temperature explosion-proof test device according to claim 7 or 8, characterized in that: The bottom surface of the sealing groove (29) is provided with a buffer assembly (28), and the buffer assembly (28) includes a buffer plate (281), a buffer spring three (282), a limit block three (283) and a limit groove three (284); the bottom surface of the sealing groove (29) is provided with a buffer groove, and a plurality of vertically arranged buffer springs three (282) are fixed in the buffer groove, and the upper end of each buffer spring three (282) is fixedly connected to the buffer plate (281), and the buffer plate (281) is slidably arranged in the buffer groove, and the two ends of the buffer plate (281) are respectively fixedly connected to the corresponding limit block three (283), and each limit block three (283) is respectively slidably connected to the corresponding limit groove three (284) arranged on the inner side wall of the buffer groove.

10. A method for using the new energy battery high temperature explosion-proof test device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1: Battery placement and positioning; S101: The battery is placed above the middle of the cross groove of the positioning platform (42); S102: Motor 1 (41) starts to drive screw 1 (43) to rotate; S103: The screw rod 1 (43) rotates to drive the worm rod (47) to rotate, drives the worm wheel (49) to rotate, and drives the two nut blocks 1 (44) to move toward each other; S104: The worm wheel (49) rotates to drive the second screw rod (48) to rotate and drive the two second nut blocks (46) to move toward each other; S105: The battery is clamped and positioned by using four clamping assemblies (45) on two nut blocks 1 (44) and two nut blocks 2 (46); S2: Close the sealing door (21); S201: The two second motors (26) are turned on synchronously, and simultaneously drive the corresponding threaded rods (212) to rotate; S202: The two threaded rods (212) rotate synchronously to drive the corresponding lifting rods (23) to descend synchronously; S203: The two lifting rods (23) are synchronously lowered to drive the ear plate (22) to lower; S204: the ear plate (22) descends to drive the sealing door (21) to descend in the sealing groove (29), thereby sealing the test box (1); S3: the controller (3) turns on the heating module (7) to heat the new energy battery; S4: The pressure monitoring module (6) monitors the interior of the test chamber (1); S5: When the battery spontaneously ignites or explodes, the air pressure in the test box (1) increases, and the air pressure pushes the sealing plug (510) to slide upward from the exhaust hole. The sealing plate (56) is higher than the exhaust groove (52), and the gas inside the test box (1) is discharged from the exhaust groove (52).

Images