An interface durability detection device for a replaceable power battery of a new energy vehicle

Abstract

This invention relates to the field of battery testing technology, specifically to a device for testing the interface durability of power batteries for swappable new energy vehicles. The device includes a frame; a fixed plate is movably mounted on the frame; a swing plate is movably mounted at the bottom of the fixed plate; a testing interface is located at the bottom of the swing plate; a first transverse positioning ball and a second transverse positioning ball are arranged in the middle of the swing plate along the transverse direction; and a first longitudinal positioning ball and a second longitudinal positioning ball are arranged in the middle of the swing plate along the longitudinal direction. This invention utilizes the multi-point spherical support of the first transverse positioning ball, the second transverse positioning ball, the first longitudinal positioning ball, and the second longitudinal positioning ball to drive the swing plate to deflect, thereby enabling insertion and removal tests between the testing interface and the power battery interface at different angles, accurately reflecting the actual service life of the power battery.

Description

Technical Field

[0001] This invention relates to the field of battery testing technology, specifically to a device for testing the interface durability of swappable new energy vehicle power batteries. Background Technology

[0002] With the rapid development of the new energy vehicle industry, battery swapping has been widely adopted due to its advantages such as high charging efficiency and low operation and maintenance costs. As the core component of battery swapping vehicles, the power battery's swapping interface serves a dual function of mechanical connection and electrical energy transmission. The lifespan and operational reliability of this interface directly determine the operational safety of the entire vehicle and the battery swapping station. According to industry standards and product inspection standards, the battery swapping interface must undergo a specified number of insertion and removal durability tests to assess its comprehensive performance after long-term repeated connection and disconnection.

[0003] Currently available battery swapping interface insertion and removal durability testing devices operate in a relatively simple mode, only simulating the battery interface's insertion and removal motion in a purely vertical direction. Throughout the test, the relative motion between the battery and the docking end remains perpendicular. However, in actual battery swapping scenarios, the operating conditions differ significantly from the ideal test state: firstly, the mechanical positioning mechanisms and conveying equipment within the swapping station have assembly gaps and operational errors; secondly, the vehicles to be swapped are affected by factors such as parking posture, suspension deformation, and site flatness, causing varying degrees of tilt. Under the combined effect of these multiple factors, the direction of movement of the power battery during actual battery swapping insertion and removal cannot remain absolutely vertical. The relative motion trajectory between the battery interface and the docking end will form a random angle relative to the vertical axis, and the angle and direction of deviation are not fixed.

[0004] Existing testing equipment cannot reproduce the actual insertion and removal conditions with the aforementioned angle. The test simulation scenario is out of sync with the actual application scenario. During the test, the force, friction, and docking posture of the interface do not match the actual on-site conditions. As a result, the durability test data obtained is difficult to objectively reflect the actual performance of the product. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing an interface durability testing device for swappable new energy vehicle power batteries.

[0006] The objective of this invention is achieved through the following technical solution: a device for testing the interface durability of a swappable new energy vehicle power battery, comprising a frame; a fixed plate is movably mounted on the frame; a swing plate is movably mounted on the bottom of the fixed plate; and a testing interface is provided at the bottom of the swing plate. The swing plate has a first transverse positioning ball and a second transverse positioning ball arranged in the transverse direction in the middle part; the swing plate also has a first longitudinal positioning ball and a second longitudinal positioning ball arranged in the longitudinal direction in the middle part. The middle part of the fixing plate is provided with a first transverse positioning groove and a second transverse positioning groove arranged in the transverse direction; the middle part of the fixing plate is provided with a first longitudinal positioning groove and a second longitudinal positioning groove arranged in the longitudinal direction; the first transverse positioning groove, the second transverse positioning groove, the first longitudinal positioning groove and the second longitudinal positioning groove are respectively provided with a first transverse piston, a second transverse piston, a first longitudinal piston and a second longitudinal piston in a sealed lifting and sliding manner. The first lateral positioning ball is movably located at the bottom of the first lateral piston; the second lateral positioning ball is movably located at the bottom of the second lateral piston; the first longitudinal positioning ball is movably located at the bottom of the first longitudinal piston; and the second longitudinal positioning ball is movably located at the bottom of the second longitudinal piston.

[0007] The present invention is further configured such that a first transverse return spring is provided between the bottom of the first transverse piston and the first transverse positioning groove; and a first transverse air chamber is formed between the top of the first transverse piston and the first transverse positioning groove. A second transverse return spring is provided between the second transverse piston and the bottom of the second transverse positioning groove; a second transverse air chamber is formed between the second transverse piston and the top of the second transverse positioning groove. A first longitudinal return spring is provided between the first longitudinal piston and the bottom of the first longitudinal positioning groove; a first longitudinal air chamber is formed between the first longitudinal piston and the top of the first longitudinal positioning groove. A second longitudinal return spring is provided between the second longitudinal piston and the bottom of the second longitudinal positioning groove; a second longitudinal air chamber is formed between the second longitudinal piston and the top of the second longitudinal positioning groove.

[0008] The present invention is further configured such that a first transverse inflation groove and a second transverse inflation groove are arranged on the top of the fixing plate in the transverse direction; the first transverse inflation groove and the second transverse inflation groove are respectively provided with a first transverse pressing column and a second transverse pressing column in a sealed and movable manner. The first and second transverse pressing posts are respectively provided with a first transverse inflation channel and a second transverse inflation channel; the bottom of the first transverse inflation groove is connected to the top of the first transverse air chamber; the top of the first transverse inflation groove is connected to the bottom of the first transverse inflation channel; the top of the first transverse inflation channel is connected to the outside; the bottom of the second transverse inflation groove is connected to the top of the second transverse air chamber; the top of the second transverse inflation groove is connected to the bottom of the second transverse inflation channel; the top of the second transverse inflation channel is connected to the outside. A first transverse one-way valve is provided between the bottom of the first transverse inflation groove and the top of the first transverse air chamber, and between the bottom of the second transverse inflation groove and the top of the second transverse air chamber; a second transverse one-way valve is provided between the top of the first transverse inflation groove and the bottom of the first transverse inflation channel, and between the top of the second transverse inflation groove and the bottom of the second transverse inflation channel; a first transverse inflation spring is provided between the bottom of the first transverse pressing post and the bottom of the first transverse inflation groove; a second transverse inflation spring is provided between the bottom of the second transverse pressing post and the bottom of the second transverse inflation groove.

[0009] The present invention is further configured such that a first longitudinal inflation groove and a second longitudinal inflation groove are arranged on the top of the fixed plate along the longitudinal direction; the first longitudinal inflation groove and the second longitudinal inflation groove are respectively provided with a first longitudinal pressing column and a second longitudinal pressing column in a sealed and movable manner. The first longitudinal pressing column and the second longitudinal pressing column are respectively provided with a first longitudinal inflation channel and a second longitudinal inflation channel; the bottom of the first longitudinal inflation groove is connected to the top of the first longitudinal air chamber; the top of the first longitudinal inflation groove is connected to the bottom of the first longitudinal inflation channel; the top of the first longitudinal inflation channel is connected to the outside; the bottom of the second longitudinal inflation groove is connected to the top of the second longitudinal air chamber; the top of the second longitudinal inflation groove is connected to the bottom of the second longitudinal inflation channel; the top of the second longitudinal inflation channel is connected to the outside. A first longitudinal check valve is provided between the bottom of the first longitudinal inflation groove and the top of the first longitudinal air chamber, and between the bottom of the second longitudinal inflation groove and the top of the second longitudinal air chamber; a second longitudinal check valve is provided between the top of the first longitudinal inflation groove and the bottom of the first longitudinal inflation channel, and between the top of the second longitudinal inflation groove and the bottom of the second longitudinal inflation channel; a first longitudinal inflation spring is provided between the bottom of the first longitudinal pressing column and the bottom of the first longitudinal inflation groove; and a second longitudinal inflation spring is provided between the bottom of the second longitudinal pressing column and the bottom of the second longitudinal inflation groove.

[0010] The present invention is further configured such that a drive plate is provided at the top of the frame; the fixed plate is movably and vertically disposed at the bottom of the drive plate; a rotating disk is rotatably disposed at the bottom of the drive plate; the circumferential surface of the rotating disk is provided with a pressing strip for pressing the first transverse pressing post, the second transverse pressing post, the first longitudinal pressing post and the second longitudinal pressing post; and the drive plate is provided with a drive assembly for driving the rotating disk to rotate.

[0011] The invention is further configured such that the drive plate is provided with a cylinder; the output end of the cylinder is connected to the middle part of the fixed plate; the drive assembly includes a servo motor provided on the drive plate and a gear connected to the output end of the servo motor; the gear meshes with the outer periphery of the rotating disk.

[0012] The present invention is further configured such that the fixing plate is provided with a first transverse exhaust channel and a second transverse exhaust channel; the fixing plate is movably provided with a first transverse connecting rod and a second transverse connecting rod; the top of the first transverse connecting rod and the top of the second transverse connecting rod are respectively provided with a first transverse ventilation channel and a second transverse ventilation channel; The bottom of the first transverse exhaust channel is connected to the top of the first transverse air chamber; the top of the first transverse exhaust channel is used to connect to the bottom of the first transverse ventilation channel; the top of the first transverse ventilation channel is connected to the outside; the bottom of the second transverse exhaust channel is connected to the top of the second transverse air chamber; the top of the second transverse exhaust channel is used to connect to the bottom of the second transverse ventilation channel; the top of the second transverse ventilation channel is connected to the outside. The bottom of the first transverse connecting rod and the bottom of the second transverse connecting rod are both provided with transverse strip grooves extending along the height direction; the bottom of the first transverse piston and the bottom of the second transverse piston are both provided with transverse pins; the transverse pins are movably disposed in the transverse strip grooves.

[0013] The invention is further configured such that the top of the fixed plate is provided with a transverse rocker arm extending in the transverse direction; the middle part of the transverse rocker arm is rotatably connected to the fixed plate; a first transverse slider and a second transverse slider are slidably provided at both ends of the transverse rocker arm in the transverse direction; a transverse retaining spring is provided between the first transverse slider and the second transverse slider; the first transverse slider and the second transverse slider are respectively hinged to the top of the first transverse connecting rod and the top of the second transverse connecting rod.

[0014] The present invention is further configured such that the fixing plate is provided with a first longitudinal exhaust channel and a second longitudinal exhaust channel; the fixing plate is movably provided with a first longitudinal connecting rod and a second longitudinal connecting rod; the top of the first longitudinal connecting rod and the top of the second longitudinal connecting rod are respectively provided with a first longitudinal ventilation channel and a second longitudinal ventilation channel; The bottom of the first longitudinal exhaust channel is connected to the top of the first longitudinal air chamber; the top of the first longitudinal exhaust channel is used to connect to the bottom of the first longitudinal ventilation channel; the top of the first longitudinal ventilation channel is connected to the outside; the bottom of the second longitudinal exhaust channel is connected to the top of the second longitudinal air chamber; the top of the second longitudinal exhaust channel is used to connect to the bottom of the second longitudinal ventilation channel; the top of the second longitudinal ventilation channel is connected to the outside. The bottom of the first longitudinal connecting rod and the bottom of the second longitudinal connecting rod are both provided with longitudinal strip grooves extending along the height direction; the bottom of the first longitudinal piston and the bottom of the second longitudinal piston are both provided with longitudinal pins; the longitudinal pins are movably disposed in the longitudinal strip grooves.

[0015] The present invention is further configured such that the top of the fixed plate is provided with a longitudinal rocker arm extending in the longitudinal direction; the middle part of the longitudinal rocker arm is rotatably connected to the fixed plate; a first longitudinal slider and a second longitudinal slider are slidably provided at both ends of the longitudinal rocker arm in the longitudinal direction; a longitudinal retaining spring is provided between the first longitudinal slider and the second longitudinal slider; the first longitudinal slider and the second longitudinal slider are respectively hinged to the top of the first longitudinal connecting rod and the top of the second longitudinal connecting rod.

[0016] The beneficial effects of the present invention are as follows: The present invention uses the spherical multi-point support of the first lateral positioning ball, the second lateral positioning ball, the first longitudinal positioning ball, and the second longitudinal positioning ball to drive the swing plate to deflect, thereby enabling insertion and removal tests between the detection interface and the power battery interface at different angles, which can accurately reflect the actual service life of the power battery. Attached Figure Description

[0017] The invention will be further illustrated with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention after the frame is hidden; Figure 3 This is a structural schematic diagram of the present invention from another perspective after the hidden rack is installed; Figure 4 This is a schematic diagram of the structure of the fixed plate and the swing plate of the present invention. Figure 5 yes Figure 4 A magnified view of part A in the middle; Figure 6 This is a cross-sectional view of the cooperation between the fixed plate and the swing plate of the present invention; Figure 7 yes Figure 6 A magnified view of part B in the middle; Figure 8 This is a cross-sectional view of the cooperation between the fixed plate and the swing plate of the present invention from another perspective; The components include: 1. Frame; 11. Power battery; 21. Fixing plate; 22. Drive plate; 23. Rotating disc; 24. Pressing bar; 25. Cylinder; 26. Servo motor; 27. Gear; 3. Swing plate; 31. First transverse positioning ball; 32. Second transverse positioning ball; 33. First longitudinal positioning ball; 34. Second longitudinal positioning ball; 35. Detection interface; 41. First transverse positioning groove; 42. Second transverse positioning groove; 43. First longitudinal positioning groove; 44. Second longitudinal positioning groove; 45. First transverse air chamber; 46. Second transverse air chamber; 47. First longitudinal air chamber. ; 48. Second longitudinal air chamber; 51. First transverse piston; 52. Second transverse piston; 53. First longitudinal piston; 54. Second longitudinal piston; 55. First transverse return spring; 56. Second transverse return spring; 57. First longitudinal return spring; 58. Second longitudinal return spring; 591. Transverse pin; 592. Longitudinal pin; 61. First transverse inflation groove; 62. Second transverse inflation groove; 63. First longitudinal inflation groove; 64. Second longitudinal inflation groove; 65. First transverse inflation channel; 66. Second transverse inflation channel; 67. First longitudinal inflation channel; 68. 691. Second longitudinal inflation channel; 692. First transverse check valve; 71. First transverse pressing post; 72. Second transverse pressing post; 73. First longitudinal pressing post; 74. Second longitudinal pressing post; 75. First transverse inflation spring; 76. Second transverse inflation spring; 77. First longitudinal inflation spring; 78. Second longitudinal inflation spring; 791. Second transverse check valve; 792. Second longitudinal check valve; 81. First transverse exhaust channel; 82. Second transverse exhaust channel; 83. First longitudinal exhaust channel; 84. Second longitudinal exhaust channel ; 91. First transverse connecting rod; 92. Second transverse connecting rod; 93. First longitudinal connecting rod; 94. Second longitudinal connecting rod; 95. First transverse ventilation channel; 96. Second transverse ventilation channel; 97. First longitudinal ventilation channel; 98. Second longitudinal ventilation channel; 991. Transverse strip groove; 992. Longitudinal strip groove; 101. Transverse rocker arm; 102. First transverse slider; 103. Second transverse slider; 104. Transverse holding spring; 105. Longitudinal rocker arm; 106. First longitudinal slider; 107. Second longitudinal slider; 108. Longitudinal holding spring. Detailed Implementation

[0019] The present invention will be further described in conjunction with the following embodiments.

[0020] Depend on Figures 1 to 8 As can be seen, the interface durability testing device for a swappable new energy vehicle power battery 11 described in this embodiment includes a frame 1; the frame 1 is movably equipped with a fixed plate 21; the bottom of the fixed plate 21 is movably equipped with a swing plate 3; the bottom of the swing plate 3 is equipped with a testing interface 35. The swing plate 3 has a first transverse positioning ball 31 and a second transverse positioning ball 32 arranged in the transverse direction in the middle part; the swing plate 3 has a first longitudinal positioning ball 33 and a second longitudinal positioning ball 34 arranged in the longitudinal direction in the middle part. The middle part of the fixing plate 21 is provided with a first transverse positioning groove 41 and a second transverse positioning groove 42 arranged in the transverse direction; the middle part of the fixing plate 21 is provided with a first longitudinal positioning groove 43 and a second longitudinal positioning groove 44 arranged in the longitudinal direction; the first transverse positioning groove 41, the second transverse positioning groove 42, the first longitudinal positioning groove 43 and the second longitudinal positioning groove 44 are respectively provided with a first transverse piston 51, a second transverse piston 52, a first longitudinal piston 53 and a second longitudinal piston 54 for sealing, lifting and sliding. The first transverse positioning ball 31 is movably disposed at the bottom of the first transverse piston 51; the second transverse positioning ball 32 is movably disposed at the bottom of the second transverse piston 52; the first longitudinal positioning ball 33 is movably disposed at the bottom of the first longitudinal piston 53; and the second longitudinal positioning ball 34 is movably disposed at the bottom of the second longitudinal piston 54.

[0021] Specifically, the interface durability testing device for the swappable new energy vehicle power battery 11 described in this embodiment fixes the power battery 11 to the testing station below the frame 1 during testing. The frame 1 drives the fixed plate 21 and the swing plate 3 to rise and fall vertically as a whole, so that the testing interface 35 at the bottom of the swing plate 3 and the interface of the power battery 11 can complete the insertion and removal action. When there is a lateral or longitudinal misalignment between the testing interface 35 and the interface of the power battery 11, the first lateral positioning ball 31, the second lateral positioning ball 32, the first longitudinal positioning ball 33 and the second longitudinal positioning ball 34 can roll freely at the bottom of the corresponding piston, causing the swing plate 3 to tilt and deflect in any direction relative to the fixed plate 21, thus reproducing the interface with angular docking state caused by vehicle tilting, assembly gap of the battery swapping station conveying equipment, insufficient flatness of the site, etc. during the actual battery swapping process.

[0022] This embodiment uses the spherical multi-point support of the first transverse positioning ball 31, the second transverse positioning ball 32, the first longitudinal positioning ball 33, and the second longitudinal positioning ball 34 to ensure that the force is evenly distributed during the tilting process of the swing plate 3, and avoids deformation of the detection interface 35 or deviation of detection data caused by stress concentration at a single point.

[0023] The interface durability testing device for a swappable new energy vehicle power battery 11 described in this embodiment includes a first transverse return spring 55 between the bottom of the first transverse piston 51 and the first transverse positioning groove 41; and a first transverse air chamber 45 is formed between the top of the first transverse piston 51 and the first transverse positioning groove 41. A second transverse return spring 56 is provided between the bottom of the second transverse piston 52 and the second transverse positioning groove 42; a second transverse air chamber 46 is formed between the top of the second transverse piston 52 and the second transverse positioning groove 42. A first longitudinal return spring 57 is provided between the bottom of the first longitudinal piston 53 and the first longitudinal positioning groove 43; a first longitudinal air chamber 47 is formed between the top of the first longitudinal piston 53 and the first longitudinal positioning groove 43. A second longitudinal return spring 58 is provided between the bottom of the second longitudinal piston 54 and the second longitudinal positioning groove 44; a second longitudinal air chamber 48 is formed between the top of the second longitudinal piston 54 and the second longitudinal positioning groove 44.

[0024] Specifically, in the initial state, the first transverse return spring 55, the second transverse return spring 56, the first longitudinal return spring 57, and the second longitudinal return spring 58 are of the same specification and have the same pre-compression amount. They respectively push the first transverse piston 51, the second transverse piston 52, the first longitudinal piston 53, and the second longitudinal piston 54 to the same reference height, keeping the swing plate 3 in a horizontal state. When compressed gas is filled into the first transverse air chamber 45, the second transverse air chamber 46, the first longitudinal air chamber 47, or the second longitudinal air chamber 48, the air pressure in the corresponding air chamber increases, overcoming the elastic force of the corresponding return spring, pushing the corresponding piston to slide downward along the corresponding positioning groove, thereby causing the corresponding positioning ball to extend downward. When the gas in the corresponding air chamber is discharged, the air pressure drops to atmospheric pressure, the corresponding return spring releases its elastic potential energy, pushes the corresponding piston to slide upward along the corresponding positioning groove to reset, and causes the corresponding positioning ball to return to the initial height. This embodiment controls the dynamic balance between the air pressure in the corresponding air chamber and the elastic force of the corresponding reset spring, thereby linearly controlling the extension height of each positioning ball and continuously adjusting the tilt angle of the swing plate 3 in the lateral and longitudinal directions.

[0025] The interface durability testing device for a swappable new energy vehicle power battery 11 described in this embodiment has a first transverse inflation groove 61 and a second transverse inflation groove 62 arranged in the transverse direction on the top of the fixing plate 21; the first transverse inflation groove 61 and the second transverse inflation groove 62 are respectively sealed and movable with a first transverse pressing column 71 and a second transverse pressing column 72. The first transverse pressing post 71 and the second transverse pressing post 72 are respectively provided with a first transverse inflation channel 65 and a second transverse inflation channel 66; the bottom of the first transverse inflation groove 61 is connected to the top of the first transverse air chamber 45; the top of the first transverse inflation groove 61 is connected to the bottom of the first transverse inflation channel 65; the top of the first transverse inflation channel 65 is connected to the outside; the bottom of the second transverse inflation groove 62 is connected to the top of the second transverse air chamber 46; the top of the second transverse inflation groove 62 is connected to the bottom of the second transverse inflation channel 66; the top of the second transverse inflation channel 66 is connected to the outside; A first transverse one-way valve 691 is provided between the bottom of the first transverse inflation groove 61 and the top of the first transverse air chamber 45, and between the bottom of the second transverse inflation groove 62 and the top of the second transverse air chamber 46; a second transverse one-way valve 791 is provided between the top of the first transverse inflation groove 61 and the bottom of the first transverse inflation channel 65, and between the top of the second transverse inflation groove 62 and the bottom of the second transverse inflation channel 66; a first transverse inflation spring 75 is provided between the bottom of the first transverse pressing post 71 and the bottom of the first transverse inflation groove 61; and a second transverse inflation spring 76 is provided between the bottom of the second transverse pressing post 72 and the bottom of the second transverse inflation groove 62.

[0026] Specifically, when it is necessary to adjust the extension height of the first lateral positioning ball 31, the first lateral pressing column 71 is pressed down, the first lateral air spring 75 is compressed, the volume of the sealed space in the first lateral air groove 61 decreases and the gas pressure increases. At this time, the second lateral one-way valve 791 is closed by pressure, and the first lateral one-way valve 691 is opened by pressure. The gas in the first lateral air groove 61 is filled into the first lateral air chamber 45 through the first lateral one-way valve 691, pushing the first lateral piston 51 to move downward, causing the first lateral positioning ball 31 to extend; the first lateral pressing column 71 is then released. Afterwards, the first transverse air spring 75 releases its elastic force, pushing the first transverse pressing column 71 upward to reset. The volume of the sealed space in the first transverse air inlet 61 increases, creating a negative pressure. The first transverse one-way valve 691 closes under the negative pressure, while the second transverse one-way valve 791 opens under the negative pressure. Outside air enters the first transverse air inlet 61 through the first transverse air inlet channel 65 and the second transverse one-way valve 791, completing one air inlet cycle. Repeatedly pressing the first transverse pressing column 71 can gradually increase the air pressure in the first transverse air chamber 45, causing the first transverse positioning ball 31 to gradually extend to the target height. In addition, the working process of the second transverse pressing column 72, the second transverse air inlet 62, the second transverse air inlet channel 66, the first transverse one-way valve 691, the second transverse one-way valve 791, and the second transverse air spring 76 is completely consistent with the corresponding components of the first transverse air inlet, and the extension height of the second transverse positioning ball 32 can be adjusted independently.

[0027] The interface durability testing device for a swappable new energy vehicle power battery 11 described in this embodiment has a first longitudinal inflation groove 63 and a second longitudinal inflation groove 64 arranged on the top of the fixed plate 21 along the longitudinal direction; the first longitudinal inflation groove 63 and the second longitudinal inflation groove 64 are respectively sealed and movable with a first longitudinal pressing column 73 and a second longitudinal pressing column 74. The first longitudinal pressing post 73 and the second longitudinal pressing post 74 are respectively provided with a first longitudinal inflation channel 67 and a second longitudinal inflation channel 68; the bottom of the first longitudinal inflation groove 63 is connected to the top of the first longitudinal air chamber 47; the top of the first longitudinal inflation groove 63 is connected to the bottom of the first longitudinal inflation channel 67; the top of the first longitudinal inflation channel 67 is connected to the outside; the bottom of the second longitudinal inflation groove 64 is connected to the top of the second longitudinal air chamber 48; the top of the second longitudinal inflation groove 64 is connected to the bottom of the second longitudinal inflation channel 68; the top of the second longitudinal inflation channel 68 is connected to the outside. A first longitudinal one-way valve 692 is provided between the bottom of the first longitudinal inflation groove 63 and the top of the first longitudinal air chamber 47, and between the bottom of the second longitudinal inflation groove 64 and the top of the second longitudinal air chamber 48; a second longitudinal one-way valve 792 is provided between the top of the first longitudinal inflation groove 63 and the bottom of the first longitudinal inflation channel 67, and between the top of the second longitudinal inflation groove 64 and the bottom of the second longitudinal inflation channel 68; a first longitudinal inflation spring 77 is provided between the bottom of the first longitudinal pressing column 73 and the bottom of the first longitudinal inflation groove 63; and a second longitudinal inflation spring 78 is provided between the bottom of the second longitudinal pressing column 74 and the bottom of the second longitudinal inflation groove 64.

[0028] Specifically, when it is necessary to adjust the extension height of the first longitudinal positioning ball 33, press down on the first longitudinal pressing column 73. The first longitudinal air spring 77 is compressed, the volume of the sealed space in the first longitudinal air groove 63 decreases, and the gas pressure increases. At this time, the second longitudinal one-way valve 792 is closed by pressure, and the first longitudinal one-way valve 692 is opened by pressure. The gas in the first longitudinal air groove 63 is filled into the first longitudinal air chamber 47 through the first longitudinal one-way valve 692, pushing the first longitudinal piston 53 to move downward, causing the first longitudinal positioning ball 33 to extend. Release the first longitudinal pressing column 73. Afterwards, the first longitudinal air spring 77 releases its elastic force, pushing the first longitudinal pressing column 73 to return to its original position. The volume of the sealed space in the first longitudinal air groove 63 increases, creating a negative pressure. The first longitudinal one-way valve 692 closes under the negative pressure, while the second longitudinal one-way valve 792 opens under the negative pressure. Outside air enters the first longitudinal air groove 63 through the first longitudinal air channel 67 and the second longitudinal one-way valve 792, completing one air cycle. Repeatedly pressing the first longitudinal pressing column 73 can gradually increase the air pressure in the first longitudinal air chamber 47, causing the first longitudinal positioning ball 33 to gradually extend to the target height. In addition, the working process of the second longitudinal pressing column 74, the second longitudinal air groove 64, the second longitudinal air channel 68, the first longitudinal one-way valve 692, the second longitudinal one-way valve 792, and the second longitudinal air spring 78 is completely consistent with the corresponding components of the first longitudinal section, and the extension height of the second longitudinal positioning ball 34 can be adjusted independently.

[0029] This embodiment describes an interface durability testing device for a swappable new energy vehicle power battery 11. The top of the frame 1 is provided with a drive plate 22; the fixed plate 21 is movably mounted on the bottom of the drive plate 22; the bottom of the drive plate 22 is rotatably provided with a rotating disk 23; the circumferential surface of the rotating disk 23 is provided with pressing strips 24 for pressing the first transverse pressing post 71, the second transverse pressing post 72, the first longitudinal pressing post 73, and the second longitudinal pressing post 74; the drive plate 22 is provided with a drive assembly for driving the rotating disk 23 to rotate.

[0030] Specifically, during the testing process, the drive assembly drives the rotating disk 23 to rotate at a constant speed or intermittently around its central axis. The pressing strip 24 on the circumference of the rotating disk 23 rotates synchronously with the rotating disk 23, pressing the first transverse pressing post 71, the second transverse pressing post 72, the first longitudinal pressing post 73, and the second longitudinal pressing post 74 in sequence, thereby achieving fully automatic adjustment of the extension height of the four positioning balls. When it is necessary to simulate a tilting condition in a specific direction, the drive assembly controls the rotating disk 23 to rotate to the corresponding angle, so that the pressing strip 24 continuously presses the pressing post in the corresponding direction, gradually increasing the air pressure in the corresponding air chamber, causing the corresponding positioning ball to extend, and making the swing plate 3 tilt stably in that direction. When it is necessary to switch the tilting direction or adjust the tilting angle, the drive assembly controls the rotating disk 23 to rotate to the next target angle, so that the pressing strip 24 presses the pressing post in another direction, adjusting the height of the corresponding positioning ball.

[0031] This embodiment describes a device for testing the interface durability of a swappable new energy vehicle power battery 11. The drive plate 22 is equipped with a cylinder 25. The output end of the cylinder 25 is connected to the middle of a fixed plate 21. The drive assembly includes a servo motor 26 mounted on the drive plate 22 and a gear 27 connected to the output end of the servo motor 26. The gear 27 meshes with the outer periphery of a rotating disk 23. Specifically, the extension and retraction of the output end of the cylinder 25 can drive the fixed plate 21 to smoothly rise and fall along the vertical guide rail of the frame 1, thereby driving the swing plate 3 and the detection interface 35 to complete the insertion and removal actions with the power battery 11 interface. The servo motor 26 drives the gear 27 to rotate, and the gear 27 meshes with the gear ring on the outer periphery of the rotating disk 23, causing the rotating disk 23 to rotate synchronously. The rotation angle, speed, and direction of the servo motor 26 can be programmed and controlled by the control system, thereby controlling the rotation position of the pressing strip 24 and achieving adjustment of different tilt angles.

[0032] The interface durability testing device for a swappable new energy vehicle power battery 11 described in this embodiment includes a fixing plate 21 with a first transverse exhaust channel 81 and a second transverse exhaust channel 82; the fixing plate 21 is movably equipped with a first transverse connecting rod 91 and a second transverse connecting rod 92; the top of the first transverse connecting rod 91 and the top of the second transverse connecting rod 92 are respectively provided with a first transverse ventilation channel 95 and a second transverse ventilation channel 96. The bottom of the first transverse exhaust channel 81 is connected to the top of the first transverse air chamber 45; the top of the first transverse exhaust channel 81 is used to connect to the bottom of the first transverse ventilation channel 95; the top of the first transverse ventilation channel 95 is connected to the outside; the bottom of the second transverse exhaust channel 82 is connected to the top of the second transverse air chamber 46; the top of the second transverse exhaust channel 82 is used to connect to the bottom of the second transverse ventilation channel 96; the top of the second transverse ventilation channel 96 is connected to the outside; The bottom of the first transverse connecting rod 91 and the bottom of the second transverse connecting rod 92 are both provided with transverse strip grooves 991 extending along the height direction; the bottom of the first transverse piston 51 and the bottom of the second transverse piston 52 are both provided with transverse pins 591; the transverse pins 591 are movably disposed in the transverse strip grooves 991.

[0033] Specifically, when the first transverse piston 51 moves downward, the transverse pin 591 at the bottom of the first transverse piston 51 slides freely downward along the transverse groove 991 at the bottom of the first transverse connecting rod 91. At this time, the first transverse connecting rod 91 remains stationary, the top of the first transverse exhaust channel 81 is disconnected from the bottom of the first transverse ventilation channel 95, the first transverse air chamber 45 remains sealed, and the air pressure continues to rise. When the first transverse piston 51 continues to move downward to its maximum design stroke, the transverse pin 591 slides to the bottom end face of the transverse groove 991, and the transverse pin 591 rigidly contacts the inner wall of the transverse groove 991. The first transverse piston 51 then... Continuing downward movement will cause the first transverse connecting rod 91 to move downward synchronously, aligning the top of the first transverse exhaust channel 81 with the bottom of the first transverse ventilation channel 95, allowing the high-pressure gas in the first transverse air chamber 45 to be quickly discharged to the outside through the first transverse exhaust channel 81 and the first transverse ventilation channel 95. The air pressure in the first transverse air chamber 45 will rapidly decrease to atmospheric pressure, and the first transverse return spring 55 will push the first transverse piston 51 to return to its original position. The working process of the second transverse piston 52, the second transverse exhaust channel 82, the second transverse connecting rod 92, the second transverse ventilation channel 96, and the transverse pin 591 is completely consistent with the corresponding components of the first transverse chamber. In this embodiment, the automatic trigger-type exhaust and reset of the first transverse air chamber 45 and the second transverse air chamber 46 is achieved through the linkage of the transverse slot 991 and the transverse pin 591, without the need for additional electromagnetic exhaust valves or manual exhaust devices. Moreover, the exhaust triggering condition is strictly linked to the maximum extension height of the corresponding piston, ensuring that the maximum extension of each positioning ball is consistent and avoiding structural damage or detection errors caused by over-extension.

[0034] This embodiment describes an interface durability testing device for a swappable new energy vehicle power battery 11. The top of the fixed plate 21 is provided with a transverse swing rod 101 extending in the transverse direction. The middle part of the transverse swing rod 101 is rotatably connected to the fixed plate 21. A first transverse slider 102 and a second transverse slider 103 are slidably provided at both ends of the transverse swing rod 101 in the transverse direction. A transverse retaining spring 104 is provided between the first transverse slider 102 and the second transverse slider 103. The first transverse slider 102 and the second transverse slider 103 are respectively hinged to the top of the first transverse connecting rod 91 and the top of the second transverse connecting rod 92.

[0035] Specifically, when the first transverse connecting rod 91 moves downward, it drives the first transverse slider 102 to slide outward along the transverse rocker arm 101. The transverse rocker arm 101 rotates around its central pivot point, driving the second transverse slider 103 to slide inward along the transverse rocker arm 101, thereby driving the second transverse connecting rod 92 to move upward, forcibly disconnecting the top of the second transverse exhaust channel 82 from the bottom of the second transverse ventilation channel 96, keeping the second transverse air chamber 46 sealed. After the first transverse air chamber 45 finishes exhausting, the first transverse piston 51 returns to its original position upward, the transverse pin 591 slides freely upward along the transverse strip groove 991, and the first transverse connecting rod 91 remains stationary under the action of the transverse holding spring 104, thus opening the first transverse exhaust channel 81. The first transverse ventilation channel 95 remains connected until the second transverse piston 52 moves downward, causing the second transverse connecting rod 92 to move downward. At this point, the transverse rocker arm 101 rotates in the opposite direction, causing the first transverse connecting rod 91 to move upward, thus disconnecting the first transverse exhaust channel 81 from the first transverse ventilation channel 95. In this embodiment, the lever action of the transverse rocker arm 101 and the cooperation of the transverse holding spring 104 achieve mechanical interlocking of the exhaust states of the first transverse air chamber 45 and the second transverse air chamber 46. That is, only one transverse air chamber is in the exhaust state at the same time, while the other is in the sealed state. This avoids the transverse attitude loss of the swing plate 3 caused by the simultaneous exhaust of the two transverse air chambers, and ensures the stability and reliability of the transverse tilt angle adjustment.

[0036] This embodiment describes an interface durability testing device for a swappable new energy vehicle power battery 11. The fixed plate 21 is provided with a first longitudinal exhaust channel 83 and a second longitudinal exhaust channel 84. The fixed plate 21 is movably provided with a first longitudinal connecting rod 93 and a second longitudinal connecting rod 94. The top of the first longitudinal connecting rod 93 and the top of the second longitudinal connecting rod 94 are respectively provided with a first longitudinal ventilation channel 97 and a second longitudinal ventilation channel 98. The bottom of the first longitudinal exhaust channel 83 is connected to the top of the first longitudinal air chamber 47; the top of the first longitudinal exhaust channel 83 is used to connect to the bottom of the first longitudinal ventilation channel 97; the top of the first longitudinal ventilation channel 97 is connected to the outside; the bottom of the second longitudinal exhaust channel 84 is connected to the top of the second longitudinal air chamber 48; the top of the second longitudinal exhaust channel 84 is used to connect to the bottom of the second longitudinal ventilation channel 98; the top of the second longitudinal ventilation channel 98 is connected to the outside. The bottom of the first longitudinal connecting rod 93 and the bottom of the second longitudinal connecting rod 94 are both provided with longitudinal strip grooves 992 extending along the height direction; the bottom of the first longitudinal piston 53 and the bottom of the second longitudinal piston 54 are both provided with longitudinal pins 592; the longitudinal pins 592 are movably disposed in the longitudinal strip grooves 992.

[0037] Specifically, when the first longitudinal piston 53 moves downward, the longitudinal pin 592 at the bottom of the first longitudinal piston 53 slides freely downward along the longitudinal groove 992 at the bottom of the first longitudinal connecting rod 93. At this time, the first longitudinal connecting rod 93 remains stationary, the top of the first longitudinal exhaust channel 83 is disconnected from the bottom of the first longitudinal ventilation channel 97, the first longitudinal air chamber 47 remains sealed, and the air pressure continues to rise. When the first longitudinal piston 53 continues to move downward to its maximum design stroke, the longitudinal pin 592 slides to the bottom end face of the longitudinal groove 992, and the longitudinal pin 592 rigidly contacts the inner wall of the longitudinal groove 992. The first longitudinal piston 53 then... Continuing downward movement will cause the first longitudinal connecting rod 93 to move downward synchronously, aligning the top of the first longitudinal exhaust channel 83 with the bottom of the first longitudinal ventilation channel 97. The high-pressure gas in the first longitudinal air chamber 47 is quickly discharged to the outside through the first longitudinal exhaust channel 83 and the first longitudinal ventilation channel 97, and the air pressure in the first longitudinal air chamber 47 rapidly decreases to atmospheric pressure. The first longitudinal return spring 57 pushes the first longitudinal piston 53 to return to its original position. The working process of the second longitudinal piston 54, the second longitudinal exhaust channel 84, the second longitudinal connecting rod 94, the second longitudinal ventilation channel 98, and the longitudinal pin 592 is completely consistent with the corresponding components of the first longitudinal section. In this embodiment, the automatic trigger-type exhaust and reset of the first longitudinal air chamber 47 and the second longitudinal air chamber 48 is achieved through the linkage of the longitudinal slot 992 and the longitudinal pin 592. There is no need to set up an additional electromagnetic exhaust valve or manual exhaust device. Moreover, the exhaust triggering condition is strictly linked to the maximum extension height of the corresponding piston, ensuring that the maximum extension of each positioning ball is consistent and avoiding structural damage or detection errors caused by over-extension.

[0038] This embodiment describes an interface durability testing device for a swappable new energy vehicle power battery 11. The top of the fixed plate 21 is provided with a longitudinal swing rod 105 extending in the longitudinal direction. The middle part of the longitudinal swing rod 105 is rotatably connected to the fixed plate 21. A first longitudinal slider 106 and a second longitudinal slider 107 are slidably provided at both ends of the longitudinal swing rod 105 in the longitudinal direction. A longitudinal retaining spring 108 is provided between the first longitudinal slider 106 and the second longitudinal slider 107. The first longitudinal slider 106 and the second longitudinal slider 107 are respectively hinged to the top of the first longitudinal connecting rod 93 and the top of the second longitudinal connecting rod 94.

[0039] Specifically, when the first longitudinal connecting rod 93 moves downward, it causes the first longitudinal slider 106 to slide outward along the longitudinal rocker arm 105. The longitudinal rocker arm 105 rotates around its central pivot point, causing the second longitudinal slider 107 to slide inward along the longitudinal rocker arm 105. This, in turn, causes the second longitudinal connecting rod 94 to move upward, forcibly disconnecting the top of the second longitudinal exhaust channel 84 from the bottom of the second longitudinal ventilation channel 98, keeping the second longitudinal air chamber 48 sealed. After the first longitudinal air chamber 47 has finished exhausting, the first longitudinal piston 53 returns to its original position upward, the longitudinal pin 592 slides freely upward along the longitudinal slot 992, and the first longitudinal connecting rod 93 remains stationary under the action of the longitudinal holding spring 108. The first longitudinal exhaust channel 83... The first longitudinal ventilation channel 97 remains connected until the second longitudinal piston 54 moves downward, causing the second longitudinal connecting rod 94 to move downward. At this point, the longitudinal rocker arm 105 rotates in the opposite direction, causing the first longitudinal connecting rod 93 to move upward, thus disconnecting the first longitudinal exhaust channel 83 from the first longitudinal ventilation channel 97. In this embodiment, the lever action of the longitudinal rocker arm 105 and the cooperation of the longitudinal holding spring 108 achieve mechanical interlocking of the exhaust states of the first longitudinal air chamber 47 and the second longitudinal air chamber 48. That is, only one longitudinal air chamber is in the exhaust state at the same time, while the other is in the sealed state. This avoids the loss of longitudinal attitude control of the swing plate 3 caused by the simultaneous exhaust of the two longitudinal air chambers, and ensures the stability and reliability of the longitudinal tilt angle adjustment.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A device for testing the interface durability of a swappable new energy vehicle power battery, characterized in that: Includes a frame (1); the frame (1) is movably equipped with a fixed plate (21); the bottom of the fixed plate (21) is movably equipped with a swing plate (3); the bottom of the swing plate (3) is equipped with a detection interface (35); The swing plate (3) has a first transverse positioning ball (31) and a second transverse positioning ball (32) arranged in the transverse direction in the middle part; the swing plate (3) has a first longitudinal positioning ball (33) and a second longitudinal positioning ball (34) arranged in the longitudinal direction in the middle part; The middle part of the fixing plate (21) is provided with a first transverse positioning groove (41) and a second transverse positioning groove (42) arranged in the transverse direction; the middle part of the fixing plate (21) is provided with a first longitudinal positioning groove (43) and a second longitudinal positioning groove (44) arranged in the longitudinal direction; the first transverse positioning groove (41), the second transverse positioning groove (42), the first longitudinal positioning groove (43) and the second longitudinal positioning groove (44) are respectively provided with a first transverse piston (51), a second transverse piston (52), a first longitudinal piston (53) and a second longitudinal piston (54) for sealing, lifting and sliding; The first transverse positioning ball (31) is movably disposed at the bottom of the first transverse piston (51); the second transverse positioning ball (32) is movably disposed at the bottom of the second transverse piston (52); the first longitudinal positioning ball (33) is movably disposed at the bottom of the first longitudinal piston (53); and the second longitudinal positioning ball (34) is movably disposed at the bottom of the second longitudinal piston (54).

2. The interface durability testing device for swappable new energy vehicle power batteries according to claim 1, characterized in that: A first transverse return spring (55) is provided between the bottom of the first transverse piston (51) and the first transverse positioning groove (41); a first transverse air chamber (45) is formed between the top of the first transverse piston (51) and the first transverse positioning groove (41). A second transverse return spring (56) is provided between the bottom of the second transverse piston (52) and the second transverse positioning groove (42); a second transverse air chamber (46) is formed between the top of the second transverse piston (52) and the second transverse positioning groove (42); A first longitudinal return spring (57) is provided between the bottom of the first longitudinal piston (53) and the first longitudinal positioning groove (43); a first longitudinal air chamber (47) is formed between the top of the first longitudinal piston (53) and the first longitudinal positioning groove (43); A second longitudinal return spring (58) is provided between the bottom of the second longitudinal piston (54) and the second longitudinal positioning groove (44); a second longitudinal air chamber (48) is formed between the top of the second longitudinal piston (54) and the second longitudinal positioning groove (44).

3. The interface durability testing device for a swappable new energy vehicle power battery according to claim 2, characterized in that: The top of the fixed plate (21) is provided with a first transverse inflation groove (61) and a second transverse inflation groove (62) arranged in the transverse direction; the first transverse inflation groove (61) and the second transverse inflation groove (62) are respectively provided with a first transverse pressing column (71) and a second transverse pressing column (72) for sealing and lifting movement; The first transverse pressing post (71) and the second transverse pressing post (72) are respectively provided with a first transverse inflation channel (65) and a second transverse inflation channel (66); the bottom of the first transverse inflation groove (61) is connected to the top of the first transverse air chamber (45); the top of the first transverse inflation groove (61) is connected to the bottom of the first transverse inflation channel (65); the top of the first transverse inflation channel (65) is connected to the outside; the bottom of the second transverse inflation groove (62) is connected to the top of the second transverse air chamber (46); the top of the second transverse inflation groove (62) is connected to the bottom of the second transverse inflation channel (66); the top of the second transverse inflation channel (66) is connected to the outside; A first transverse one-way valve (691) is provided between the bottom of the first transverse inflation groove (61) and the top of the first transverse air chamber (45), and between the bottom of the second transverse inflation groove (62) and the top of the second transverse air chamber (46); a second transverse one-way valve (791) is provided between the top of the first transverse inflation groove (61) and the bottom of the first transverse inflation channel (65), and between the top of the second transverse inflation groove (62) and the bottom of the second transverse inflation channel (66); a first transverse inflation spring (75) is provided between the bottom of the first transverse pressing column (71) and the bottom of the first transverse inflation groove (61); a second transverse inflation spring (76) is provided between the bottom of the second transverse pressing column (72) and the bottom of the second transverse inflation groove (62).

4. The interface durability detection device for replaceable power new energy vehicle battery according to claim 3, characterized in that: The top of the fixed plate (21) is provided with a first longitudinal inflation groove (63) and a second longitudinal inflation groove (64) arranged in the longitudinal direction; the first longitudinal inflation groove (63) and the second longitudinal inflation groove (64) are respectively provided with a first longitudinal pressing column (73) and a second longitudinal pressing column (74) for sealing and lifting movement; The first longitudinal pressing column (73) and the second longitudinal pressing column (74) are respectively provided with a first longitudinal inflation channel (67) and a second longitudinal inflation channel (68); the bottom of the first longitudinal inflation groove (63) is connected to the top of the first longitudinal air chamber (47); the top of the first longitudinal inflation groove (63) is connected to the bottom of the first longitudinal inflation channel (67); the top of the first longitudinal inflation channel (67) is connected to the outside; the bottom of the second longitudinal inflation groove (64) is connected to the top of the second longitudinal air chamber (48); the top of the second longitudinal inflation groove (64) is connected to the bottom of the second longitudinal inflation channel (68); the top of the second longitudinal inflation channel (68) is connected to the outside; A first longitudinal check valve (692) is provided between the bottom of the first longitudinal inflation groove (63) and the top of the first longitudinal air chamber (47), and between the bottom of the second longitudinal inflation groove (64) and the top of the second longitudinal air chamber (48); a second longitudinal check valve (792) is provided between the top of the first longitudinal inflation groove (63) and the bottom of the first longitudinal inflation channel (67), and between the top of the second longitudinal inflation groove (64) and the bottom of the second longitudinal inflation channel (68); a first longitudinal inflation spring (77) is provided between the bottom of the first longitudinal pressing column (73) and the bottom of the first longitudinal inflation groove (63); a second longitudinal inflation spring (78) is provided between the bottom of the second longitudinal pressing column (74) and the bottom of the second longitudinal inflation groove (64).

5. The interface durability detection device for replaceable power new energy vehicle battery according to claim 4, characterized in that: The top of the frame (1) is provided with a drive plate (22); the fixed plate (21) is movably and vertically located at the bottom of the drive plate (22); the bottom of the drive plate (22) is provided with a rotating disc (23); the circumferential surface of the rotating disc (23) is provided with a pressing strip (24) for pressing the first transverse pressing column (71), the second transverse pressing column (72), the first longitudinal pressing column (73) and the second longitudinal pressing column (74); the drive plate (22) is provided with a drive assembly for driving the rotating disc (23) to rotate. 6.The interface durability detection device of a replaceable electric new energy vehicle power battery according to claim 5, characterized in that: The drive plate (22) is equipped with a cylinder (25); the output end of the cylinder (25) is connected to the middle part of the fixed plate (21); the drive assembly includes a servo motor (26) provided on the drive plate (22) and a gear (27) connected to the output end of the servo motor (26); the gear (27) meshes with the outer periphery of the rotating disk (23).

7. The interface durability testing device for a swappable new energy vehicle power battery according to claim 5, characterized in that: The fixed plate (21) is provided with a first transverse exhaust channel (81) and a second transverse exhaust channel (82); the fixed plate (21) is movably provided with a first transverse connecting rod (91) and a second transverse connecting rod (92); the top of the first transverse connecting rod (91) and the top of the second transverse connecting rod (92) are respectively provided with a first transverse ventilation channel (95) and a second transverse ventilation channel (96); The bottom of the first transverse exhaust channel (81) is connected to the top of the first transverse air chamber (45); the top of the first transverse exhaust channel (81) is used to connect with the bottom of the first transverse ventilation channel (95); the top of the first transverse ventilation channel (95) is connected to the outside; the bottom of the second transverse exhaust channel (82) is connected to the top of the second transverse air chamber (46); the top of the second transverse exhaust channel (82) is used to connect with the bottom of the second transverse ventilation channel (96); the top of the second transverse ventilation channel (96) is connected to the outside; The bottom of the first transverse connecting rod (91) and the bottom of the second transverse connecting rod (92) are provided with transverse strip grooves (991) extending along the height direction; the bottom of the first transverse piston (51) and the bottom of the second transverse piston (52) are provided with transverse pins (591); the transverse pins (591) are movably disposed in the transverse strip grooves (991).

8. The interface durability testing device for a swappable new energy vehicle power battery according to claim 7, characterized in that: The top of the fixed plate (21) is provided with a horizontal swing rod (101) extending in the horizontal direction; the middle part of the horizontal swing rod (101) is rotatably connected to the fixed plate (21); the two ends of the horizontal swing rod (101) in the horizontal direction are respectively provided with a first horizontal slider (102) and a second horizontal slider (103); a horizontal retaining spring (104) is provided between the first horizontal slider (102) and the second horizontal slider (103); the first horizontal slider (102) and the second horizontal slider (103) are respectively hinged to the top of the first horizontal connecting rod (91) and the top of the second horizontal connecting rod (92).

9. The interface durability detection device for replaceable power new energy vehicle battery according to claim 5, characterized in that: The fixed plate (21) is provided with a first longitudinal exhaust channel (83) and a second longitudinal exhaust channel (84); the fixed plate (21) is movably provided with a first longitudinal connecting rod (93) and a second longitudinal connecting rod (94); the top of the first longitudinal connecting rod (93) and the top of the second longitudinal connecting rod (94) are respectively provided with a first longitudinal ventilation channel (97) and a second longitudinal ventilation channel (98); The bottom of the first longitudinal exhaust channel (83) is connected to the top of the first longitudinal air chamber (47); the top of the first longitudinal exhaust channel (83) is used to connect with the bottom of the first longitudinal ventilation channel (97); the top of the first longitudinal ventilation channel (97) is connected to the outside; the bottom of the second longitudinal exhaust channel (84) is connected to the top of the second longitudinal air chamber (48); the top of the second longitudinal exhaust channel (84) is used to connect with the bottom of the second longitudinal ventilation channel (98); the top of the second longitudinal ventilation channel (98) is connected to the outside; The bottom of the first longitudinal connecting rod (93) and the bottom of the second longitudinal connecting rod (94) are provided with longitudinal strip grooves (992) extending along the height direction; the bottom of the first longitudinal piston (53) and the bottom of the second longitudinal piston (54) are provided with longitudinal pins (592); the longitudinal pins (592) are movably disposed in the longitudinal strip grooves (992). 10.The interface durability detection device of a replaceable power new energy vehicle battery according to claim 9, characterized in that: The top of the fixed plate (21) is provided with a longitudinal swing rod (105) extending in the longitudinal direction; the middle part of the longitudinal swing rod (105) is rotatably connected to the fixed plate (21); the two ends of the longitudinal swing rod (105) are respectively provided with a first longitudinal slider (106) and a second longitudinal slider (107); a longitudinal retaining spring (108) is provided between the first longitudinal slider (106) and the second longitudinal slider (107); the first longitudinal slider (106) and the second longitudinal slider (107) are respectively hinged to the top of the first longitudinal connecting rod (93) and the top of the second longitudinal connecting rod (94).

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