A safety test device for new energy vehicle power battery pack

Abstract

The present invention relates to the field of battery pack testing technology, and discloses a safety testing device for a power battery pack of a new energy vehicle, comprising a chassis, a shell fixedly mounted on the outside of the chassis, a feed port provided on the outside of the shell, and an opening provided on the outside of the shell. In order to further improve the convenience and fluency of the detection process, the safety testing device for the power battery pack of a new energy vehicle is provided with a conveying assembly, which cooperates with multiple groups of conveying rollers to ensure that the battery pack can continue to move forward stably. At the same time, in the square groove of the centering long block, a small spring connects the square block and the guide ball, so that the battery pack can be accurately centered and guided from both sides during transportation to avoid offset collision. The long spring rod in the long groove supports the push roller, which is arranged below the feed port, and can assist the battery pack to smoothly enter the shell, thereby guiding the battery pack for detection in an orderly manner.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack testing, and in particular to a safety testing device for a power battery pack of a new energy vehicle. Background Art

[0002] The safety test device for new energy vehicle power battery packs is a device designed specifically for evaluating the safety and reliability of electric vehicle power battery systems under various extreme conditions. Its function is to detect the performance of the battery pack and potential safety hazards by simulating various possible operating environments, such as high temperature, low temperature, vibration, overcharging, over-discharging, etc.

[0003] The safety testing device is mainly composed of a battery pack mounting frame, an environmental simulation system, an electrical control system and a data acquisition and analysis system. Its working process includes installing the battery pack to be tested on the test frame, adjusting the test environment through the environmental simulation system, and the electrical control system performing charge and discharge tests on the battery pack. At the same time, the data acquisition and analysis system records and analyzes the test data in real time. This device uses high-precision sensors and advanced control algorithms, which can accurately simulate various test conditions to ensure the accuracy of the test results.

[0004] However, in the actual use of the above equipment, most of the devices are prone to dents and residual dust and impurities on the battery pack surface before testing, which affects the test results. In view of this, we propose a safety testing device for new energy vehicle power battery packs. Summary of the invention

[0005] The purpose of the present invention is to provide a safety testing device for a new energy vehicle power battery pack to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A safety test device for a new energy vehicle power battery pack comprises a chassis, a shell is fixedly mounted on the outside of the chassis, a feed port is provided on the outside of the shell, an opening is provided on the outside of the shell, a current detection device is fixedly mounted on the outside of the shell, and a conveying assembly is arranged on the outside of the chassis, and the conveying assembly comprises: A transmission module is provided on the outer side of the chassis, an asynchronous motor is fixedly installed on the outer side of the transmission module, a conveying roller is rotatably installed on the inner side of the chassis, and a centering long block is fixedly installed on the outer side of the chassis; A square groove is provided inside the centering long block, one end of a small spring is fixedly installed inside the square groove, a square block is fixedly installed on the other end of the small spring, and a guide ball is rotatably installed on the end of the square block away from the small spring; A long groove is provided on the inner side of the base frame, one end of a long spring rod is fixedly installed on the inner side of the long groove, a support block is fixedly installed on the other end of the long spring rod, and a push roller is rotatably installed on the inner side of the support block.

[0007] Preferably, the conveying rollers, centering long blocks, square grooves, small springs, blocks, guide balls, long grooves, long spring rods and support blocks are provided in multiple groups, and multiple groups of the conveying rollers are arrayed linearly at equal intervals on the outside of the base frame, and multiple groups of the small springs are arrayed linearly at equal intervals on the inside of the square grooves, and multiple groups of the square grooves, small springs, blocks and guide balls are arrayed linearly at equal intervals on the outside of the centering long blocks, and multiple groups of the centering long blocks, square grooves, small springs, blocks, guide balls, long grooves, long spring rods and support blocks are mirrored on the outside of the base frame with the vertical midline of the front-to-back direction of the base frame as the mirror axis.

[0008] Preferably, a plurality of groups of the conveying rollers are connected to the transmission module, the current detection device is arranged outside the opening, and the long groove, long spring rod, support block and push roller are arranged below the feed port.

[0009] Preferably, a detection component is provided on the inner side of the base frame, and the detection component includes a long rod, the long rod is fixedly installed on the inner side of the base frame, a circular block is fixedly installed on the outer side of the long rod, a pressure detection module is fixedly installed on the outer side of the circular block, one end of a pressure spring rod is fixedly installed on the outer side of the pressure detection module, a circular frame is fixedly installed on the other end of the pressure spring rod, and a circular wheel is rotatably installed on the outer side of the circular frame.

[0010] Preferably, the long rod, circular block, pressure detection module, pressure spring rod, circular frame and circular wheel are arranged in multiple groups, and the multiple groups of circular blocks, pressure detection modules, pressure spring rods, circular frames and circular wheels are linearly arrayed at equal intervals on the outside of the long rod, and the multiple groups of long rods, circular blocks, pressure detection modules, pressure spring rods, circular frames and circular wheels are mirrored on the inside of the outer shell with the horizontal midline in the left and right directions of the outer shell as the mirror axis.

[0011] Preferably, an extrusion assembly is provided on the inner side of the shell, and the extrusion assembly includes an inverted spring rod, one end of the inverted spring rod is fixedly installed on the inner side of the shell, a long plate is fixedly installed on the other end of the inverted spring rod, a bracket is fixedly installed on the outer side of the long plate, and a pressure roller is rotatably installed on the outer side of the bracket.

[0012] Preferably, the inverted spring rods, long boards, brackets and pressure rollers are provided in multiple groups, and multiple groups of the brackets are mirrored on the outside of the long boards with the vertical center line of the long boards in the front-to-back direction as the mirror axis, and multiple groups of the inverted spring rods, long boards, brackets and pressure rollers are mirrored on the inside of the shell with the vertical center line of the shell in the front-to-back direction as the mirror axis.

[0013] Preferably, a cleaning assembly is provided on the outside of the base frame, and the cleaning assembly includes a dust suction module, the dust suction module is fixedly installed on the outside of the outer shell, one end of a connecting pipe is fixedly installed on the air inlet of the dust suction module, and a dust suction cylinder is fixedly installed on the other end of the connecting pipe, one end of a threaded spring rod is fixedly installed on the inside of the outer shell, and a brush plate is fixedly installed on the other end of the threaded spring rod.

[0014] Preferably, the threaded spring rods are provided in a plurality of groups, and the plurality of groups of threaded spring rods are mirror-imaged on the outside of the shell with the vertical midline in the front-to-back direction of the shell as the mirror axis.

[0015] Preferably, the dust collection cylinder is arranged above the outer side of the feed inlet of the outer shell, and the brush plate is arranged above the inner side of the feed inlet of the outer shell.

[0016] Compared with the prior art, the present invention provides a safety test device for a new energy vehicle power battery pack, which has the following beneficial effects: 1. In order to make the device further improve the convenience and smoothness of the detection process, a conveying component is provided, which cooperates with multiple groups of conveying rollers to ensure that the battery pack can move forward continuously and stably. At the same time, in the square groove of the centering long block, a small spring connects the square block and the guide ball, so that the battery pack can be accurately centered and guided from both sides during transportation to avoid offset and collision. The long spring rod in the long groove supports the push roller and is set below the feed port, which can assist the battery pack to enter the shell smoothly, thereby guiding the battery pack for detection in an orderly manner.

[0017] 2. In order to enable the device to further screen out battery packs with surface defects, a detection component is provided. The component cooperates with the long rod of the base frame and works together through the circular ring block and the pressure detection module, so that the pressure spring rod connects the circular ring frame and the pressure detection module. The circular ring wheel can roll on the surface of the battery pack. When the battery pack passes by, if there are uneven defects on the surface, the circular ring wheel will be displaced to varying degrees. The pressure detection module can keenly capture the pressure changes to judge the surface condition of the battery pack, thereby realizing comprehensive monitoring of the battery pack.

[0018] 3. In order to further reduce the potential risk of damage during transportation, an extrusion assembly is provided. The assembly cooperates with multiple sets of inverted spring rods in the shell to connect the long board. The pressure rollers installed by the bracket on the long board form a balanced pressure distribution. When the battery pack is about to leave the shell after the inspection, the pressure rollers moderately press the battery pack under the elastic force of the inverted spring rods to avoid the battery pack from slipping or shifting due to unexpected factors such as vibration and tilt.

[0019] 4. In order to prevent the device from being interfered with the detection results by impurities, a cleaning component is provided. The component cooperates with the dust collection module on the outer shell and is connected to the dust collection cylinder through a connecting pipe. The dust collection cylinder is placed above the outer side of the feed port to remove large particles of pollutants such as dust and debris in the surrounding area before the battery pack enters. The brush plate supported by multiple groups of threaded spring rods in the outer shell can fit tightly to the surface of the battery pack with the help of spring elastic force to brush off fine dust and impurities. The two work together to perform double cleaning of the battery pack to ensure that the surface of the battery pack is clean during detection and improve the detection precision and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic top view of the structure of the present invention as a whole; Figure 2 It is a schematic side cross-sectional view of part of the structure of the present invention; Figure 3 It is a schematic diagram of a top view of the back of a part of the structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area; Figure 5 It is a schematic cross-sectional view of the back of part of the structure of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area; Figure 7 It is a bottom-up cross-sectional schematic diagram of a partial structure of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of the middle C area; Fig. 9 It is a schematic cross-sectional view of part of the structure of the present invention.

[0021] In the figure: 1. base frame; 2. shell; 3. feed port; 4. opening; 5. current detection device; 6. conveying assembly; 61. transmission module; 62. asynchronous motor; 63. conveying roller; 64. centering long block; 65. square groove; 66. small spring; 67. block; 68. guide ball; 69. long groove; 610. long spring rod; 611. support block; 612. push roller; 7. detection assembly; 71. long rod; 72. circular ring block; 73. pressure detection module; 74. pressure spring rod; 75. circular ring frame; 76. circular ring wheel; 8. extrusion assembly; 81. inverted spring rod; 82. long board; 83. bracket; 84. pressure roller; 9. cleaning assembly; 91. dust suction module; 92. connecting pipe; 93. dust suction cylinder; 94. threaded spring rod; 95. brush plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-9 The present invention provides a technical solution: a safety testing device for a new energy vehicle power battery pack, comprising a base frame 1, a shell 2 is fixedly installed on the outside of the base frame 1, a feed port 3 is opened on the outside of the shell 2, an opening 4 is opened on the outside of the shell 2, and a current detection device 5 is fixedly installed on the outside of the shell 2.

[0024] In one embodiment of the present invention, a conveying assembly 6 is arranged on the outside of the chassis 1, and the conveying assembly 6 includes a transmission module 61. The transmission module 61 is arranged on the outside of the chassis 1, and an asynchronous motor 62 is fixedly installed on the outside of the transmission module 61. A conveying roller 63 is rotatably installed on the inside of the chassis 1. A centering long block 64 is fixedly installed on the outside of the chassis 1, and a square groove 65 is opened inside the centering long block 64. One end of a small spring 66 is fixedly installed inside the square groove 65, and a square block 67 is fixedly installed on the other end of the small spring 66. A guide ball 68 is rotatably installed on the end of the square block 67 away from the small spring 66. A long groove 69 is opened inside the chassis 1, and a long spring 66 is fixedly installed inside the long groove 69. At one end of the spring rod 610, a support block 611 is fixedly installed at the other end of the long spring rod 610, and a push roller 612 is rotatably installed inside the support block 611. A plurality of groups of conveying rollers 63, a centering long block 64, a square groove 65, a small spring 66, a block 67, a guide ball 68, a long groove 69, a long spring rod 610 and a support block 611 are provided, and a plurality of groups of conveying rollers 63 are linearly arrayed at equal intervals on the outside of the base frame 1, and a plurality of groups of small springs 66 are linearly arrayed at equal intervals on the inside of the square groove 65, and a plurality of groups of square grooves 65, a small spring 66, a block 67 and a guide ball 68 are linearly arrayed at equal intervals on the outside of the centering long block 64, and a plurality of groups of centering long blocks 64, square grooves 65, small springs 66, blocks 67 and guide balls 68 are linearly arrayed at equal intervals. The spring 66, the block 67, the guide ball 68, the long slot 69, the long spring rod 610 and the support block 611 are mirrored with the vertical center line of the front-to-back direction of the chassis 1 as the mirror axis, and the mirror image is set on the outside of the chassis 1. Multiple groups of conveying rollers 63 are connected to the transmission module 61, and the current detection device 5 is set on the outside of the opening 4. The long slot 69, the long spring rod 610, the support block 611 and the push roller 612 are set below the feed port 3. When the test work is started, the asynchronous motor 62 starts to run after receiving the power-on command, and the power output is transmitted to the transmission module 61. The transmission module 61 evenly distributes the power to the multiple groups of conveying rollers 63, prompting the conveying rollers 63 to rotate synchronously, which is the battery. The conveying of the battery pack builds a stable conveyor belt, allowing the battery pack to move forward smoothly on the roller surface. At the same time, in the square groove 65 of the centering long block 64, the small spring 66 connects the block 67 and the guide ball 68, so that the battery pack can be accurately centered and guided from both sides when conveying, avoiding offset and collision. At the same time, the long spring rod 610 on the inside of the long groove 69 pushes the support block 611 and the push roller 612. When the battery pack is conveyed to the vicinity of the feed port 3, the push roller 612, under the elastic support of the long spring rod 610, gently presses against the bottom of the battery pack, assisting the battery pack to overcome possible resistance and smoothly enter the inside of the shell 2, and orderly start the subsequent detection process, thereby guiding the battery pack for detection in an orderly manner.

[0025] In one embodiment of the present invention, a detection component 7 is arranged on the inner side of the base frame 1, and the detection component 7 includes a long rod 71, the long rod 71 is fixedly installed on the inner side of the base frame 1, a circular ring block 72 is fixedly installed on the outer side of the long rod 71, a pressure detection module 73 is fixedly installed on the outer side of the circular ring block 72, one end of a pressure spring rod 74 is fixedly installed on the outer side of the pressure detection module 73, a circular ring frame 75 is fixedly installed on the other end of the pressure spring rod 74, and a circular ring wheel 76 is rotatably installed on the outer side of the circular ring frame 75, and a plurality of groups of long rods 71, circular ring blocks 72, pressure detection modules 73, pressure spring rods 74, circular ring frames 75 and circular ring wheels 76 are arranged, and the plurality of groups of circular ring blocks 72, pressure detection modules 73, pressure spring rods 74, circular ring frames 75 and circular ring wheels 76 are linearly arrayed at equal intervals on the outer side of the long rod 71, and the plurality of groups of long rods 71, ... The block 73, the pressure spring rod 74, the circular frame 75 and the circular wheel 76 use the horizontal midline of the left and right directions of the shell 2 as the mirror axis, and the mirror image is set on the inner side of the shell 2. When the battery pack is transported in the device and passes the position of the detection component 7, the circular wheel 76 rolls forward in close contact with the surface of the battery pack. If there are uneven defects on the surface of the battery pack, the circular wheel 76 will produce different degrees of displacement changes during the rolling process. This displacement change is transmitted to the pressure spring rod 74 through the circular frame 75. The change in the telescopic state of the pressure spring rod 74 will be keenly captured by the pressure detection module 73. The pressure change signal can be captured by the pressure detection module 73. By comparing the pressure change value with the preset standard, the surface condition of the battery pack can be accurately judged, and all-round and complete surface monitoring of the battery pack can be achieved, and battery packs with surface defects can be screened out, thereby achieving comprehensive monitoring of the battery pack.

[0026] In one embodiment of the present invention, an extrusion assembly 8 is provided inside the shell 2, and the extrusion assembly 8 includes an inverted spring rod 81, one end of the inverted spring rod 81 is fixedly installed inside the shell 2, and a long plate 82 is fixedly installed on the other end of the inverted spring rod 81, and a bracket 83 is fixedly installed on the outside of the long plate 82, and a pressure roller 84 is rotatably installed on the outside of the bracket 83. There are multiple groups of inverted spring rods 81, long plates 82, brackets 83 and pressure rollers 84, and multiple groups of brackets 83 are set with the vertical midline of the long plate 82 in the front and rear directions as the mirror axis, and the mirror image is set on the outside of the long plate 82, and multiple groups of inverted spring rods 81, long plates 82 The bracket 83 and the pressure roller 84 use the vertical center line of the front-to-back direction of the shell 2 as the mirror axis, and the mirror is set on the inner side of the shell 2. At the same time, when the battery pack completes a series of detection processes and is about to leave the shell 2, the pressure roller 84 pushes the long plate 82, the bracket 83 and the pressure roller 84 under the elastic force of the inverted spring rod 81, and appropriately presses the battery pack from above. This appropriate pressure can effectively offset the adverse effects caused by unexpected factors such as vibration and tilt during transportation, tightly bind the battery pack, prevent it from slipping and shifting, and ensure that the battery pack completes the test process completely and safely and is smoothly transferred to the next link.

[0027] In one embodiment of the present invention, a cleaning component 9 is provided on the outside of the base frame 1, and the cleaning component 9 includes a dust collection module 91, and the dust collection module 91 is fixedly installed on the outside of the shell 2, and one end of a connecting pipe 92 is fixedly installed on the air inlet of the dust collection module 91, and a dust collection cylinder 93 is fixedly installed on the other end of the connecting pipe 92, and one end of a threaded spring rod 94 is fixedly installed on the inside of the shell 2, and a brush plate 95 is fixedly installed on the other end of the threaded spring rod 94. There are multiple groups of threaded spring rods 94, and the multiple groups of threaded spring rods 94 are mirrored with the vertical center line of the front and rear direction of the shell 2 as the mirror axis, and the mirror image is set on the outside of the shell 2, the dust collection cylinder 93 is set above the outside of the feed port 3 of the shell 2, and the brush plate 95 is set at the feed port 3 of the shell 2 At the same time, before the test, the dust collection module 91 is started to work. Under the action of suction, large particles of pollutants such as dust and debris in the surrounding environment are strongly sucked away by the dust collection tube 93, so as to purify the path environment where the battery pack enters in advance and reduce the possibility of impurities being mixed into the test process. At the same time, the brush plate 95 is tightly fitted on the surface of the battery pack with the help of the elastic force of the threaded spring rod 94. When the battery pack enters the inside of the feed port 3, the brush plate 95 moves with the battery pack to brush off the fine dust and impurities on its surface, and cooperates with the dust collection work of the dust collection module 91 to form a double cleaning mechanism, which ensures that the surface of the battery pack is clean when it enters the test link, greatly improving the subsequent detection precision and accuracy.

[0028] Working principle: When the test work is started, the asynchronous motor 62 starts to run after receiving the power-on command, and its output power is transmitted to the transmission module 61. The transmission module 61 evenly distributes the power to multiple groups of conveying rollers 63, prompting the conveying rollers 63 to rotate synchronously, building a stable conveyor belt for the transportation of battery packs, allowing the battery packs to move smoothly on the roller surface. At the same time, in the square groove 65 of the centering long block 64, the small spring 66 connects the block 67 and the guide ball 68, so that the battery pack can be accurately centered and guided from both sides during transportation to avoid offset collision. At the same time, the long spring rod 610 inside the long groove 69 pushes the support block 611 and the push roller 612. When the battery pack is transported to the vicinity of the feed port 3, the push roller 612 is pushed. With the elastic support of the long spring rod 610, the roller 612 gently presses against the bottom of the battery pack, assisting the battery pack to overcome possible resistance and smoothly enter the interior of the housing 2, orderly starting the subsequent detection process, thereby orderly guiding the battery pack for detection. When the battery pack is transported in the device and passes the position of the detection component 7, the annular wheel 76 rolls forward in close contact with the surface of the battery pack. If there are uneven defects on the surface of the battery pack, the annular wheel 76 will produce different degrees of displacement changes during the rolling process. This displacement change is transmitted to the pressure spring rod 74 through the annular frame 75. The change in the telescopic state of the pressure spring rod 74 will be keenly captured by the pressure detection module 73. The pressure change signal is based on By comparing the pressure change value with the preset standard, the surface condition of the battery pack can be accurately judged, and all-round and complete surface monitoring of the battery pack can be achieved, and battery packs with surface defects can be screened out, thereby achieving comprehensive monitoring of the battery pack. At the same time, when the battery pack completes a series of inspection processes and is about to leave the shell 2, the pressure roller 84 pushes the long plate 82, the bracket 83 and the pressure roller 84 under the elastic force of the inverted spring rod 81, and appropriately presses the battery pack from above. This moderate pressure can effectively offset the adverse effects caused by unexpected factors such as vibration and tilt during transportation, tightly restrain the battery pack, prevent it from slipping and shifting, and ensure that the battery pack completes and safely completes the test process and is smoothly transferred. It is transported to the next link, and the dust collection module 91 is started before the test. Under the action of suction, large particles of pollutants such as dust and debris in the surrounding environment are strongly sucked away by the dust collection tube 93, so as to purify the path environment where the battery pack enters in advance and reduce the possibility of impurities being mixed into the test process. At the same time, the brush plate 95 is tightly fitted on the surface of the battery pack with the help of the elastic force of the threaded spring rod 94. When the battery pack enters the inner side of the feed port 3, the brush plate 95 moves with the battery pack to brush off the fine dust and impurities on its surface, and cooperates with the dust collection work of the dust collection module 91 to form a double cleaning mechanism, which ensures that the surface of the battery pack is clean when it enters the detection link, greatly improving the precision and accuracy of subsequent detection.

[0029] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A safety test device for a new energy vehicle power battery pack, comprising a base frame (1), a housing (2) fixedly mounted on the outside of the base frame (1), a feed port (3) being provided on the outside of the housing (2), an opening (4) being provided on the outside of the housing (2), and a current detection device (5) being fixedly mounted on the outside of the housing (2), characterized in that: A conveying assembly (6) is arranged on the outside of the base frame (1), and the conveying assembly (6) comprises: A transmission module (61), wherein the transmission module (61) is arranged on the outside of the base frame (1), an asynchronous motor (62) is fixedly mounted on the outside of the transmission module (61), a conveying roller (63) is rotatably mounted on the inside of the base frame (1), and a centering long block (64) is fixedly mounted on the outside of the base frame (1); A square groove (65), wherein a square groove (65) is provided inside the centering long block (64), one end of a small spring (66) is fixedly mounted inside the square groove (65), a square block (67) is fixedly mounted on the other end of the small spring (66), and a guide ball (68) is rotatably mounted on one end of the square block (67) away from the small spring (66); A long groove (69) is provided on the inner side of the base frame (1), one end of a long spring rod (610) is fixedly mounted on the inner side of the long groove (69), a support block (611) is fixedly mounted on the other end of the long spring rod (610), and a push roller (612) is rotatably mounted on the inner side of the support block (611).

2. The safety test device for a new energy vehicle power battery pack according to claim 1, characterized in that: The conveying roller (63), the centering long block (64), the square groove (65), the small spring (66), the square block (67), the guide ball (68), the long groove (69), the long spring rod (610) and the support block (611) are provided in multiple groups.

3. The safety testing device for a new energy vehicle power battery pack according to claim 1, characterized in that: A plurality of groups of conveying rollers (63) are connected to the transmission module (61), the current detection device (5) is arranged outside the opening (4), and the long groove (69), the long spring rod (610), the support block (611) and the push roller (612) are arranged below the feed port (3).

4. The safety testing device for a new energy vehicle power battery pack according to claim 1, characterized in that: A detection assembly (7) is arranged on the inner side of the base frame (1), and the detection assembly (7) comprises a long rod (71). The long rod (71) is fixedly mounted on the inner side of the base frame (1), a circular ring block (72) is fixedly mounted on the outer side of the long rod (71), a pressure detection module (73) is fixedly mounted on the outer side of the circular ring block (72), one end of a pressure spring rod (74) is fixedly mounted on the outer side of the pressure detection module (73), a circular ring frame (75) is fixedly mounted on the other end of the pressure spring rod (74), and a circular ring wheel (76) is rotatably mounted on the outer side of the circular ring frame (75).

5. The safety testing device for a power battery pack of a new energy vehicle according to claim 4 is characterized in that: The long rod (71), the circular ring block (72), the pressure detection module (73), the pressure spring rod (74), the circular ring frame (75) and the circular ring wheel (76) are provided in multiple groups.

6. The safety testing device for a new energy vehicle power battery pack according to claim 1, characterized in that: An extrusion assembly (8) is arranged inside the shell (2), and the extrusion assembly (8) comprises an inverted spring rod (81), one end of the inverted spring rod (81) is fixedly mounted inside the shell (2), a long plate (82) is fixedly mounted on the other end of the inverted spring rod (81), a bracket (83) is fixedly mounted on the outside of the long plate (82), and a pressure roller (84) is rotatably mounted on the outside of the bracket (83).

7. The safety testing device for a power battery pack of a new energy vehicle according to claim 6, characterized in that: The inverted spring rod (81), the long plate (82), the bracket (83) and the pressure roller (84) are provided in multiple groups.

8. The safety testing device for a new energy vehicle power battery pack according to claim 1, characterized in that: A cleaning assembly (9) is arranged on the outside of the base frame (1), the cleaning assembly (9) comprising a dust collection module (91), the dust collection module (91) is fixedly mounted on the outside of the housing (2), one end of a connecting pipe (92) is fixedly mounted on the air inlet of the dust collection module (91), a dust collection cylinder (93) is fixedly mounted on the other end of the connecting pipe (92), one end of a threaded spring rod (94) is fixedly mounted on the inside of the housing (2), a brush plate (95) is fixedly mounted on the other end of the threaded spring rod (94).

9. The safety testing device for a new energy vehicle power battery pack according to claim 8, characterized in that: The threaded spring rods (94) are provided in multiple groups.

10. The safety testing device for a new energy vehicle power battery pack according to claim 8, characterized in that: The dust collecting cylinder (93) is arranged above the outer side of the material inlet (3) of the outer shell (2), and the brush plate (95) is arranged above the inner side of the material inlet (3) of the outer shell (2).

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