CN210038088U - EOL test equipment - Google Patents

Abstract

The utility model discloses an EOL test device, which has the technical proposal that the EOL test device comprises a needle bed mechanism, wherein the needle bed mechanism comprises a probe group; the battery module comprises two automatic opposite insertion mechanisms which are respectively positioned at the left side and the right side, wherein each of the two automatic opposite insertion mechanisms comprises a driving cylinder and an opposite insertion assembly, each opposite insertion assembly comprises a plug, and the driving cylinders are used for driving the opposite insertion assemblies to move close to or far away from the battery module; including automatic lifting mechanism, needle bed mechanism and two automatic to inserting the mechanism and all installing automatic lifting mechanism is last, automatic lifting mechanism is used for driving needle bed mechanism with automatic to inserting the mechanism decline make the plug is close to the battery module motion, or drives needle bed mechanism with automatic to inserting the mechanism and rise and make the battery module motion is kept away from to the plug, and whole EOL test equipment can test by the automatic operation, and can be in the same place with battery module production water line assembly, reduces artifically, has improved efficiency.

Description

EOL test equipment

Technical Field

The utility model relates to a battery module test equipment technical field, more specifically say, it relates to an automatic EOL test equipment.

Background

In the testing process after the power battery module in the new energy industry is assembled, the temperature and the voltage in the battery module need to be tested, and the power battery module is connected with an external testing plug in an opposite-inserting mode through an inner inserting seat of the battery module. In the market, for the EOL (End of line test/production line off-line test application) comprehensive test of the battery module, the traditional test method mainly depends on manual detection, but due to the huge data volume and the complex and complicated means of a test tool, the traditional test method can not meet the requirement of high efficiency of product test in the current production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an EOL test equipment reaches automatic test, reduces the manual work, the purpose of raising the efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions: EOL test apparatus, characterized by:

the needle bed mechanism comprises a probe group;

the battery module comprises two automatic opposite insertion mechanisms which are respectively positioned at the left side and the right side, wherein each of the two automatic opposite insertion mechanisms comprises a driving cylinder and an opposite insertion assembly, each opposite insertion assembly comprises a plug, and the driving cylinders are used for driving the opposite insertion assemblies to move close to or far away from the battery module;

the automatic plug-in mechanism comprises an automatic lifting mechanism, the needle bed mechanism and the two automatic plug-in mechanisms are installed on the automatic lifting mechanism, and the automatic lifting mechanism is used for driving the needle bed mechanism and the automatic plug-in mechanisms to descend to enable the plugs to be close to the battery modules to move or driving the needle bed mechanism and the automatic plug-in mechanisms to ascend to enable the plugs to be far away from the battery modules to move.

As a further optimization, the automatic lifting mechanism comprises a driving motor, a screw rod pair, an upper top plate and a lifting plate, the screw rod pair comprises a rotating screw rod and a moving nut, the driving motor drives the rotating screw rod to rotate, the moving nut is installed on the upper top plate, the upper top plate is located above the lifting plate, a lifting guide column is arranged between the upper top plate and the lifting plate, and the needle bed mechanism and the two automatic opposite insertion mechanisms are installed on the lifting plate.

As a further optimization, the lifting guide device comprises a rack, wherein a positioning plate is arranged on the rack and positioned between the upper top plate and the lifting plate, the driving motor is arranged on the positioning plate, the lifting guide posts penetrate through the positioning plate, and the number of the lifting guide posts is at least two.

As a further optimization, the automatic lifting mechanism comprises a photoelectric limit switch, and the photoelectric limit switch is electrically connected with the driving motor.

As a further optimization, the needle bed mechanism comprises a stroke limiting column, a position sensing block and a photoelectric switch, the stroke limiting column and the probe set are simultaneously contacted with the battery module, the position sensing block is arranged at the top of the stroke limiting column, the photoelectric switch is arranged on the lifting plate at a position corresponding to the position sensing block, and the photoelectric switch is electrically connected with the driving motor;

when the stroke of the needle bed mechanism pressing down towards the battery module exceeds the required stroke, the lower end of the stroke limiting column abuts against the battery module to enable the stroke limiting column to ascend, the position sensing block ascends, and after the photoelectric switch senses that the position sensing block ascends, the driving motor closes or drives the needle bed mechanism to move upwards away from the battery module.

As a further optimization, the bottom of the lifting plate is provided with two clamping grooves, the needle bed mechanism comprises a mounting frame, the probe group is mounted on the mounting frame, and the front side end and the rear side end of the mounting frame are respectively inserted into the two clamping grooves.

As further optimization, including shell thimble mechanism, shell thimble mechanism includes drive assembly and test assembly, drive assembly drives the test assembly is close to or keeps away from the battery module motion, the test assembly is including the shell probe that is used for measuring the battery module shell.

As a further optimization, the housing probes have at least two.

As a further optimization, the automatic opposite-inserting mechanism further comprises a cylinder fixing plate and a screw, the driving cylinder is installed on the cylinder fixing plate, the lifting plate is provided with a cushion block, the cushion block is provided with a plurality of installation holes, the cylinder fixing plate is provided with installation holes, and the screw is inserted into the installation hole in the cylinder fixing plate and the installation hole in the cushion block so as to realize that the cylinder fixing plate is installed on the cushion block.

As a further optimization, the automatic opposite-inserting mechanism comprises an automatic deviation rectifying assembly, the plug assembly is mounted on the automatic deviation rectifying assembly, and the automatic deviation rectifying assembly comprises:

the mounting piece is used for being connected with the driving cylinder;

a bearing seat connected with the mounting piece;

the connection between the mounting and the carrier is a relatively movable connection, the relative movement having a non-longitudinal component;

the bearing seat is provided with a forward correcting block, the correcting block is provided with a front surface and a guide inclined surface, and in the process that the bearing seat is driven by the driving cylinder to move forward, if the guide inclined surface is firstly contacted with the battery module, the bearing seat is guided by the guide inclined surface to be attached to the battery module to perform the relative movement until the front surface is contacted with the battery module.

To sum up, the utility model discloses following beneficial effect has: this EOL test equipment realizes needle bed mechanism and automatic to inserting the automatic lift of mechanism through automatic elevating system, realizes through automatic structural design to inserting the mechanism that automatic socket with the battery module carries out to inserting, but whole EOL test equipment automated operation tests, and can be in the same place with battery module production water line assembly, reduces artifically, has improved efficiency.

Drawings

Fig. 1 is a schematic diagram of the EOL testing apparatus and the battery module in the embodiment;

FIG. 2 is an enlarged schematic structural diagram of a housing ejector mechanism of the EOL test equipment in the embodiment;

FIG. 3 is an enlarged schematic diagram of the EOL testing apparatus in the embodiment with a part of the rack removed;

FIG. 4 is an enlarged schematic diagram of the lifting plate, the needle bed mechanism and the automatic inserting mechanism of the EOL testing device in the embodiment after being partially disassembled;

FIG. 5 is an exploded and enlarged schematic view of a needle bed mechanism of the EOL testing apparatus in the embodiment;

FIG. 6 is an enlarged schematic view of an angle of view of an automatic deviation rectification component of the EOL testing apparatus in an embodiment after being partially disassembled;

FIG. 7 is an enlarged schematic view of another perspective of the automatic deviation rectification component of the EOL testing device in the embodiment after being partially disassembled;

FIG. 8 is an enlarged schematic structural view of a part of components of the EOL test apparatus in the embodiment;

FIG. 9 is an enlarged view of another portion of the components of the EOL testing apparatus in an embodiment;

fig. 10 is an exploded view of fig. 8.

In the figure: 100. a battery module; 1. a frame; 11. positioning a plate; 111. a support bar; 2. an automatic lifting mechanism; 21. a drive motor; 22. a lead screw pair; 221. rotating the lead screw; 222. moving the nut; 23. an upper top plate; 24. a lifting plate; 241. a card slot; 242. cushion blocks; 25. a lifting guide post; 26. a photoelectric limit switch; 261. a photoelectric sensor; 262. a photoelectric sensing sheet; 3. a needle bed mechanism; 31. a mounting frame; 311. a fastening hole; 312. mounting grooves; 32. a probe mounting plate; 33. a probe set; 34. a travel limit block; 340. a buffer spring; 35. a bit sensing block; 36. a photoelectric switch; 4. an automatic opposite-inserting mechanism; 41. a driving cylinder; 42. an automatic deviation rectifying component; 421. the opposite insertion component; 4211. a plug; 4212. the plug propels the cylinder; 4213. Connecting blocks; 4214. a connecting seat; 4215. a plug mounting plate; 4216. a slider; 42161, limit holes; 42612. a through hole; 422. a transverse correction block; 4221. a bayonet; 42211. a lead-in inlet; 42212. the two faces are opposite; 423. a vertical correction block; 4231. a guide ramp; 4232. the two faces are opposite; 4233. a vertical adjusting screw; 424. a bearing seat; 4241. a linkage plate; 425. a transverse deviation rectifying component; 4251. a transverse fixing plate; 4252. a transverse guide block; 4253. a transverse guide rail; 4254. a transverse limiting block; 426. a vertical deviation rectifying assembly; 4261. a vertical fixing plate; 42611, a vertical limit port; 42612. mounting holes; 4262. a vertical guide block; 4263. a vertical guide rail; 4264. a vertical limiting block; 427. a mounting member; 43. a cylinder fixing plate; 44. a limiting guide block; 45. a movable plate; 46. limiting a guide rail; 5. a shell thimble mechanism; 51. a drive assembly; 511. a power source; 512. a lead screw pair; 52. testing the component; 521. a housing probe; 61. Positioning pins; 62. a spacing pin; 63. adjusting screws; 64. a return spring; 71. advancing the guide rail; 72. and pushing the guide block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 shows a structure of an EOL testing apparatus, which includes a frame 1, and an automatic lifting mechanism 2, a needle bed mechanism 3, and two automatic insertion mechanisms 4 installed on the frame 1, where the needle bed mechanism 3 and the two automatic insertion mechanisms 4 are both installed on the automatic lifting mechanism 2, and the two automatic insertion mechanisms 4 are respectively located on the left and right sides and are used for being inserted into sockets on the left and right sides of a battery module 100. When the EOL testing equipment is used, the EOL testing equipment is installed together with a battery module production line, the battery module 100 to be tested is transported to a fixed position below a rack 1 through a transmission mechanism, an automatic lifting mechanism 2 drives a needle bed mechanism 3 and two automatic opposite insertion mechanisms 4 to move close to the battery module 100 to be tested, the needle bed mechanism 3 is in contact with the battery module 100, and the two automatic opposite insertion mechanisms 4 are respectively opposite inserted into sockets at the front end and the rear end of the battery module 100 to be tested to perform related detection.

Referring to fig. 1 and 2, the EOL testing apparatus further includes a housing thimble mechanism 5, where the housing thimble mechanism 5 is used to test a housing of the battery module to be tested. The shell thimble mechanism 5 comprises a driving component 51 and a testing component 52, wherein the driving component 51 comprises a power source 511 and a screw pair 512, the power source 511 is a motor, the testing component 52 is mounted on the screw pair 512, and the testing component 52 comprises a shell probe 521 for testing the shell of the battery module. The power source 511 drives the testing component 52 to move close to the battery module through the screw pair 512, so that the shell probe 521 contacts the shell of the battery module, and after the detection is finished, the power source 511 drives the testing component 52 to move away from the battery module through the screw pair 512. Preferably, the number of the case probes 521 is four, and the plurality of case probes 521 can effectively determine whether or not the case of the battery module is in contact with the battery.

Referring to fig. 1 and 3, the automatic lifting mechanism 2 includes a driving motor 21, a screw pair 22, an upper top plate 23 and a lifting plate 24, a positioning plate 11 is disposed on the frame 1, and the driving motor 21 is mounted on the positioning plate 11. The driving motor 21 drives the rotating screw 221 of the screw pair 22 to rotate through a belt, the moving nut 222 of the screw pair 22 is installed on the upper top plate 23, the lifting guide rods 25 are arranged between four corners of the upper top plate 23 and four corners of the lifting plate 24, and the four lifting guide rods 25 penetrate through the positioning plate 11. The needle bed mechanism 3 and the two automatic opposite inserting mechanisms 4 are both arranged on the lifting plate 24. After the driving motor 21 is started, the driving motor 21 drives the rotating screw 221 to rotate, so that the movable nut 222 moves upwards or downwards, the movable nut 222 drives the upper top plate to move upwards or downwards, the upper top plate 23 drives the lifting plate 24 to ascend or descend, and the lifting plate 24 drives the needle bed mechanisms 3 and the two automatic opposite inserting mechanisms 4 on the lifting plate 24 to ascend or descend. The four lifting guide rods 25 are matched with the positioning plate 11 for limiting, so that the lifting stability can be effectively ensured. The automatic lifting mechanism 2 further includes a photoelectric limit switch 26, and the photoelectric limit switch 26 is electrically connected to the drive motor 21. The photoelectric limit switch 26 includes a plurality of photoelectric sensors 261 and a photoelectric sensing piece 262, the positioning plate 11 is provided with a supporting rod 111, the supporting rod 111 passes through the upper top plate 23, the plurality of photoelectric sensors 261 are installed on the supporting rod 111, and the photoelectric sensing piece 262 is installed on the upper top plate 23. When the upper top plate 23 is lifted, the upper top plate 23 moves relative to the support rod 111, and the position is sensed by the cooperation of the photoelectric sensing piece 262 and the photoelectric sensor 261, so that the upper top plate 23 is prevented from being lifted or excessively lowered.

Referring to fig. 4 and 5, the needle bed mechanism 3 includes a mounting frame 31, a probe mounting plate 32, and two sets of probe sets 33, the two sets of probe sets 33 are mounted on the probe mounting plate 32, the probe mounting plate 32 is mounted on the mounting frame 31, and the mounting frame 31 is mounted on the lifting plate 24. Two clamping grooves 241 are arranged at the lower end of the lifting plate 24 at intervals, the mounting frame 31 is clamped between the two clamping grooves 241, and screws are tightened to achieve mounting and fastening. When the mounting frame is required to be disassembled, the screw is unscrewed, and the mounting frame 31 is pulled out. The mounting frame 31 is provided with a waist-shaped fastening hole 311, a screw is inserted into the fastening hole 311 and screwed on the lifting plate 24, and the position of the mounting frame 31 and the needle bed mechanism 3 can be finely adjusted left and right when the mounting frame and the needle bed mechanism are integrally mounted due to the waist-shaped fastening hole 311. Two mounting grooves 312 are arranged at the lower end of the mounting frame 31 at intervals, the probe mounting plate 32 is inserted between the two mounting grooves 312, and the mounting is realized by screwing down screws. The needle bed mechanism 3 comprises a stroke limit column 34, an induction block 35 and a photoelectric switch 36, wherein the photoelectric switch 36 is electrically connected with the driving motor 21 of the automatic lifting mechanism 2. The stroke limiting column 34 is installed on the probe installation plate 32, the lower end of the stroke limiting column 34 passes through the probe installation plate 32, and the lower end surface of the stroke limiting column 34 and the probe group 33 simultaneously contact the battery module 100. The part of the stroke limiting column 34 below the probe mounting plate 32 is sleeved with a buffer spring 340, one end of the buffer spring 340 is fixed at the lower end of the stroke limiting column 34, and the other end of the buffer spring 340 is fixed at the lower end face of the probe mounting plate 32. The position sensing block 35 is installed at the upper end of the travel limiting column 34, and the photoelectric switch 36 is installed on the lifting plate 24 at a position corresponding to the position sensing block 35. When parameters set by the program of the EOL testing equipment are wrong, the stroke of the needle bed mechanism 3 pressing down towards the battery module exceeds the required stroke, the lower end of the stroke limiting column 34 abuts against the battery module to enable the stroke limiting column 34 to ascend, the position sensing block 35 ascends, and after the photoelectric switch 36 senses that the position sensing block 35 ascends, the driving motor 21 is turned off or the needle bed mechanism 3 is driven to move upwards away from the battery module, so that the function of protecting the battery module is achieved. As further optimization, the stroke limiting column 34, the position sensing block 35 and the photoelectric switch 36 are divided into two groups, so that the false alarm rate can be effectively reduced, and a better protection effect can be achieved.

As shown in fig. 4, each of the two automatic opposite-inserting mechanisms 4 includes a driving cylinder 41 and an automatic deviation rectifying assembly 42, the driving cylinder 41 is mounted on the lifting plate 24, and the driving cylinder 41 is used for driving the automatic deviation rectifying assembly 42 to move close to or away from the battery module 100. Two cushion blocks 242 are arranged on the lifting plate 24 at intervals, the driving air cylinder 41 is fixedly arranged on the air cylinder fixing plate 43, and the air cylinder fixing plate 43 is arranged on the two cushion blocks 242 through screws. A plurality of mounting holes are formed in each of the two cushion blocks 242, and the mounting at different positions can be achieved by corresponding to different mounting holes in the cushion block 242 when the cylinder fixing plate 43 is mounted, so that the automatic inserting mechanism 4 can be adjusted according to the length of the battery module 100 to be tested. The lifting plate 24 is provided with a limiting guide block 44, the automatic opposite-inserting mechanism 4 comprises a movable plate 45, the bottom of the movable plate 45 is provided with a limiting guide rail 46, the limiting guide rail 46 is mounted with the limiting guide block 44, the telescopic rod of the driving cylinder 41 is connected with the movable plate 45, and the automatic deviation rectifying assembly 42 is mounted on the movable plate 45. When the driving cylinder 41 pushes the automatic deviation rectifying assembly 42 to move, the movable plate 44 drives the automatic deviation rectifying assembly 42 to move, and the limiting guide rail 46 moves relative to the limiting guide block 44.

Referring to fig. 6 and 7, the automatic deviation rectifying assembly 42 includes a plug assembly 421, a horizontal deviation rectifying block 422, a vertical deviation rectifying block 423, a bearing seat 424, a horizontal deviation rectifying assembly 425, a vertical deviation rectifying assembly 426 and a mounting member 427, the automatic deviation rectifying assembly 42 is mounted on the movable plate 44 through the mounting member 427, the plug assembly 421 includes a plug 4211, and the plug 4211 is used for longitudinally inserting the socket of the battery module 100 to be tested. The lateral deviation assembly 425 and the vertical deviation assembly 426 are mounted between the mounting member 427 and the carrier 424 such that the connection between the mounting member 427 and the carrier 424 is a relatively movable connection having a non-longitudinal component, which in this embodiment includes a lateral component and a vertical component, the lateral deviation assembly 425 is used to effect relative movement of the lateral component, and the vertical deviation assembly 426 is used to effect relative movement of the vertical component. The lateral correcting block 422 and the vertical correcting block 423 are correcting blocks having an opposite surface and a guide slope, and in the process that the carrier 424 is driven by the driving cylinder 41 to move forward close to the battery module 100, if the guide slope of the correcting block contacts the battery module 100 first, the carrier 424 performs the above-mentioned relative movement along with the battery module 100 under the guide of the guide slope until the opposite surface of the correcting block contacts the battery module 100. To achieve relative movement of the mounting member 427 and the carrier 424, in other embodiments, relative movement in multiple directions may be achieved by a universal joint, a ball connector, or the like.

As shown in fig. 1, 6 and 7, the transverse correcting block 422 is provided with a trumpet-shaped bayonet 4221, the bayonet 4221 comprises a guide inlet 42211 and a right opposite surface 42212, the guide inlet 42211 is gradually reduced from outside to inside and is in an arc transition, and the guide inlet 42211 is a guide inclined surface of the transverse correcting block 422. Since the battery module 100 is fixed, if the guide entrance 42211 of the lateral correction block 422 contacts the battery module 100 first during the forward movement of the carriage 424, the carriage 424 moves laterally along the battery module 100 under the guide of the guide entrance 42211 of the lateral correction block 422 until the opposite surface 42212 of the lateral correction block 422 contacts the battery module 100. A guide post 4220 is arranged between the transverse correcting block 422 and the bearing seat 424, a buffer spring (not shown) is arranged between the guide post 4220 and the bearing seat 424, and when the stroke of the bearing seat 424 and the transverse correcting block 422 moving towards the battery module 100 is too long, the buffer spring buffers retraction. The transverse deviation rectifying assembly 425 comprises a transverse fixing plate 4252, a transverse guide block 4252 and a transverse guide rail 4253, wherein the transverse guide block 4252 is installed on the front end face of the transverse fixing plate 4251, the transverse guide block 4252 is installed on the transverse guide rail 4253, and the transverse guide block 4252 and the transverse guide rail 4253 are vertically limited. The bearing seat 424 is provided with a linkage plate 4241, the transverse guide rail 4253 is installed on the rear end face of the linkage plate 4241, the bearing seat 424 is installed on the front end face of the linkage plate 4241, and the transverse fixing plate 4251 is located on the rear side of the linkage plate 4241. As the carriage 424 moves laterally, the lateral guide 4253 moves laterally relative to the lateral guide 4252, causing the carriage 424 to move laterally relative to the mounting member 427. Preferably, the transverse limit blocks 4254 are arranged at the left end and the right end of the front end surface of the transverse fixing plate 4251, and the transverse limit blocks 4254 are used for limiting and preventing the transverse guide blocks 4252 from sliding out of the transverse guide rails 4253.

As shown in fig. 1, 6 and 7, the vertical correcting block 423 is provided with a guiding inclined plane 4231 and an opposite plane 4232, and when the bearing seat 424 is driven to move forward, if the guiding inclined plane 4231 of the vertical correcting block 423 contacts the battery module 100 first, the bearing seat 424 moves vertically along the battery module 100 under the guidance of the guiding inclined plane 4231 of the vertical correcting block 423 until the opposite plane 4232 of the vertical correcting block 423 contacts the battery module 100. A guide column 4230 is arranged between the vertical correcting block 423 and the bearing seat 424, and a buffer spring is arranged between the guide column 4230 and the bearing seat 423. In the process that the vertical correcting block 423 contacts the battery module 100, the vertical correcting block 423 is stressed to move transversely towards the bearing seat 423, and the buffer spring plays a role in buffering and resetting driving. Vertical adjusting screws 4233 are arranged above the vertical correcting blocks 423, and the vertical adjusting screws 4233 are used for adjusting the vertical installation positions of the vertical correcting blocks 423. The vertical deviation rectifying assembly 426 comprises a vertical fixing plate 4261, a vertical guide block 4262 and a vertical guide rail 4263, the vertical guide rail 4263 is installed on the rear end face of the transverse fixing plate 4251, and the vertical guide block 4262 is installed on the front end face of the vertical fixing plate 4261. The vertical guide block 4262 is mounted on the vertical guide rail 4263, and the vertical guide block 4262 and the vertical guide rail 4263 are limited in the transverse direction. When the carriage 424 moves vertically, the vertical guide rail 4263 moves vertically relative to the vertical guide block 4262, so that the carriage 424 moves vertically relative to the mounting member 427.

As shown in fig. 1, 6 and 7, for optimization, the vertical deviation rectifying assembly 426 includes a vertical limiting block 4264, the vertical limiting block 4264 is installed on the rear end surface of the transverse fixing plate 4251, the vertical fixing plate 4261 is provided with a vertical limiting opening 42611, the vertical limiting block 4264 is inserted into the vertical limiting opening 42611, and the vertical height of the vertical limiting opening 42611 is greater than the vertical height of the portion of the vertical limiting block 4264 inserted into the vertical limiting opening 42611. Due to the self gravity, the vertical limiting block 4264 is normally abutted against the lower end of the vertical limiting opening 42611, when vertical automatic deviation correction is performed, the vertical limiting block 4264 moves upwards, and the vertical limiting block 4264 is matched with the vertical limiting opening 42611 to limit vertical adjustment amount.

As shown in fig. 1, 6 and 7, a mounting member 427 is installed at the rear end of the vertical fixing plate 4261, and the mounting member 427 is used for mounting the automatic deviation rectifying and inserting mechanism on the movable plate 44. The mounting piece 427 is provided with a vertical waist-shaped mounting hole 4271, the vertical fixing plate 4261 is provided with a mounting hole 42612, screws are sequentially inserted into the mounting hole 4271 and the mounting hole 42612, mounting and fixing between the mounting piece 427 and the vertical fixing plate 4261 are achieved, the waist-shaped mounting hole 4271 is arranged, so that the vertical fixing plate 4261 can be higher or lower as required when being mounted on the mounting piece 427, the vertical position of the plug 4211 is roughly set, the vertical height of the waist-shaped mounting hole 4271 is larger than the vertical height of the vertical limiting opening 42611, the waist-shaped mounting hole 4271 is used for roughly setting the vertical position of the plug 4211, and the vertical deviation rectifying component 426 is used for finely adjusting the vertical position of the plug 4211. The amount by which the vertical position of the plug 4211 can be adjusted through the mounting hole 4271 is greater than the amount by which the vertical position of the plug 4211 can be adjusted through the vertical deviation correction assembly 426.

Referring to fig. 8, 9 and 10, the floating plug assembly 421 includes a plug propulsion cylinder 4212, a connection block 4213, a connection seat 4214, a plug mounting plate 4215 and a floating block 4216, wherein a telescopic rod of the plug propulsion cylinder 4212 is mounted with the connection block 4213, the connection block 4213 is mounted and fixed on the connection seat 4214, and the plug mounting plate 4215 is mounted and fixed on the connection seat 4214. The plug 4211 is provided on the slider 4216, and the slider 4216 is mounted on the plug mounting plate 4215 via a positioning pin 61 and a stopper pin 62, the positioning pin 61 being located on the rear side of the stopper pin 62. The floating block 4216 is provided with a limiting hole 42161, the limiting pin 62 penetrates through the limiting hole 42161, a certain gap exists between the limiting hole 42161 and the limiting pin 62, the floating block 4216 can swing by taking the positioning pin 61 as an axis, the limiting pin 62 limits the swing amplitude of the floating block 4216, and when a socket on the battery module 100 to be tested has deviation within an error allowable range due to welding, the plug 4211 and the floating block 4216 can swing relative to the plug mounting plate 4215 to achieve automatic correction and adjustment, so that the plug 4211 and the socket can be better inserted in a matching mode. The slider 4216 can freely swing in two directions for 0-3 degrees and can be finely adjusted within a small angle range. The gap between the limit pin 62 and the limit hole 42161 affects the swing amplitude of the slider 4216, and in this embodiment, a gap of 0.55mm exists between the limit pin 62 and the limit hole 42161.

As shown in fig. 8, 9 and 10, for optimization, the slider 4216 is provided with a through hole 42162, the through hole 42162 is perpendicularly intersected with the limiting hole 42161, the adjusting screws 63 are inserted into the left end and the right end of the through hole 42162, and the return springs 64 are arranged between the two adjusting screws 63 and the slider 4216. When the floating block 4216 swings relative to the plug mounting plate 4215, one of the two return springs 64 is stretched and the other return spring 64 is compressed, and the elastic force generated by the two return springs 64 can drive the floating block 4215 to automatically swing and reset. The two return springs 64 are symmetrically arranged, so that after the floating block 4216 swings and returns to the center, the stress balance of two sides of the floating block 4216 can be adjusted, the adjusting screw 63 presses the return springs 64 into the through hole 42162 or moves outwards to release the return springs 64, and the stress balance of two sides of the floating block 4216 is adjusted.

As shown in fig. 8, 9 and 10, after the plug is pushed into the cylinder 4212, the telescopic rod thereof extends, and the telescopic rod drives the connecting seat 4214 and the plug mounting plate 4215 to move through the connecting block 4213, so that the plug 4211 on the floating block 4216 is inserted into the socket of the battery module 100. The bearing seat 424 is provided with a pushing guide rail 71, the connecting seat 4214 is provided with a pushing guide block 72, the pushing guide block 72 is clamped in the pushing guide rail 71, and when the plug pushing cylinder 4212 drives the connecting seat 4214 to move, the pushing guide block 72 linearly moves forwards or backwards along the pushing guide rail 71. The cooperation of the push guide block 72 and the push guide rail 71 better ensures the linear motion of the connecting seat 4214 and further the linear motion of the plug 4211.

The working principle of the EOL testing equipment is as follows: the battery module to be tested is transported to a fixed position below the rack 1 and is positioned and fixed, the driving motor 21 drives the lifting plate 24 to move downwards close to the battery module through the screw pair 22, the probe group 33 of the needle bed mechanism 3 is in contact with the battery module, the driving cylinder 41 drives the automatic deviation rectifying assembly 42 to move close to the battery module, and after the position is adjusted through the matching of the transverse correcting block 422 and the vertical correcting block 423, the plug 4212 is inserted into the socket of the battery module 100 for relevant detection.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications to the above embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the present invention.

Claims (10)

1. EOL test equipment, characterized by:

   the needle bed mechanism comprises a probe group;

   the battery module comprises two automatic opposite insertion mechanisms which are respectively positioned at the left side and the right side, wherein each of the two automatic opposite insertion mechanisms comprises a driving cylinder and an opposite insertion assembly, each opposite insertion assembly comprises a plug, and the driving cylinders are used for driving the opposite insertion assemblies to move close to or far away from the battery module;

   the automatic plug-in mechanism comprises an automatic lifting mechanism, the needle bed mechanism and the two automatic plug-in mechanisms are installed on the automatic lifting mechanism, and the automatic lifting mechanism is used for driving the needle bed mechanism and the automatic plug-in mechanisms to descend to enable the plugs to be close to the battery modules to move or driving the needle bed mechanism and the automatic plug-in mechanisms to ascend to enable the plugs to be far away from the battery modules to move.
2. 2. An EOL test apparatus as claimed in claim 1, wherein: the automatic lifting mechanism comprises a driving motor, a screw rod pair, an upper top plate and a lifting plate, the screw rod pair comprises a rotating screw rod and a moving nut, the driving motor drives the rotating screw rod to rotate, the moving nut is installed on the upper top plate, the upper top plate is located above the lifting plate, a lifting guide column is arranged between the upper top plate and the lifting plate, and the needle bed mechanism and the two automatic opposite insertion mechanisms are installed on the lifting plate.
3. 3. An EOL test apparatus as claimed in claim 2, wherein: the lifting guide post device comprises a frame, a positioning plate is arranged on the frame and positioned between an upper top plate and a lifting plate, a driving motor is installed on the positioning plate, the lifting guide post penetrates through the positioning plate, and the number of the lifting guide posts is at least two.
4. 4. An EOL test apparatus as claimed in claim 2, wherein: the automatic lifting mechanism comprises a photoelectric limit switch, and the photoelectric limit switch is electrically connected with the driving motor.
5. 5. An EOL test apparatus as claimed in claim 2, wherein: the needle bed mechanism comprises a stroke limiting column, a position sensing block and a photoelectric switch, the stroke limiting column and the probe set are simultaneously contacted with a battery module, the position sensing block is arranged at the top of the stroke limiting column, the photoelectric switch is arranged on the lifting plate at a position corresponding to the position sensing block, and the photoelectric switch is electrically connected with the driving motor;

   when the stroke of the needle bed mechanism pressing down towards the battery module exceeds the required stroke, the lower end of the stroke limiting column abuts against the battery module to enable the stroke limiting column to ascend, the position sensing block ascends, and after the photoelectric switch senses that the position sensing block ascends, the driving motor closes or drives the needle bed mechanism to move upwards away from the battery module.
6. 6. An EOL test apparatus as claimed in claim 2, wherein: the needle bed mechanism comprises a mounting frame, a probe set is mounted on the mounting frame, and the front side end and the rear side end of the mounting frame are respectively inserted into the two clamping grooves.
7. 7. An EOL test apparatus as claimed in claim 1, wherein: including shell thimble mechanism, shell thimble mechanism includes drive assembly and test assembly, drive assembly drives the test assembly is close to or keeps away from the motion of battery module, test assembly is including the shell probe that is used for measuring the battery module shell.
8. 8. An EOL test apparatus as claimed in claim 7, wherein: the shell probe has at least two.
9. 9. An EOL test apparatus as claimed in claim 2, wherein: the automatic opposite-inserting mechanism further comprises a cylinder fixing plate and a screw, the driving cylinder is installed on the cylinder fixing plate, the lifting plate is provided with a cushion block, a plurality of mounting holes are formed in the cushion block, mounting holes are formed in the cylinder fixing plate, and the screw is inserted into the mounting holes in the cylinder fixing plate and the mounting holes in the cushion block to enable the cylinder fixing plate to be installed on the cushion block.
10. 10. An EOL test apparatus as claimed in claim 1, wherein: the automatic plug mechanism includes the automatic subassembly of rectifying a deviation, the plug unit mount is in on the automatic subassembly of rectifying a deviation, the automatic subassembly of rectifying a deviation includes:

    the mounting piece is used for being connected with the driving cylinder;

    a bearing seat connected with the mounting piece;

    the connection between the mounting and the carrier is a relatively movable connection, the relative movement having a non-longitudinal component;

    the bearing seat is provided with a forward correcting block, the correcting block is provided with a front surface and a guide inclined surface, and in the process that the bearing seat is driven by the driving cylinder to move forward, if the guide inclined surface is firstly contacted with the battery module, the bearing seat is guided by the guide inclined surface to be attached to the battery module to perform the relative movement until the front surface is contacted with the battery module.

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