Dual-station battery size detection machine and dual parallel detection apparatus including same

Abstract

This invention relates to the field of visual inspection technology for pouch battery dimensions, and in particular to a dual-station battery dimension inspection machine and a dual-path parallel inspection device including the same. Regarding the dual-station battery dimension inspection machine, a first station carrier plate and a second station carrier plate are arranged side-by-side along the transfer direction on a platform; a transfer drive mechanism is connected to the platform, driving the platform to reciprocate, causing the two station carrier plates to alternately enter the inspection area; a first reference switching positioning component and a second reference switching positioning component are respectively arranged corresponding to the front ends of the two station carrier plates, and can independently reciprocate along the front-back and vertical directions of the station, forming a front-end positioning reference surface matching the corresponding battery specification when descending to the working position; the first station positioning component and the second station positioning component are respectively matched with the corresponding station carrier plate, completing the left-right centering and front-back precise positioning of the corresponding battery. Thus, it can adapt to pouch batteries of different lengths and specifications, simplifies the changeover process, and improves changeover efficiency and reference position consistency.

Description

Technical Field

[0001] This invention relates to the field of visual inspection technology for pouch battery dimensions, and in particular to a dual-station battery dimension inspection machine and a dual-path parallel inspection device including the same. Background Technology

[0002] With the rapid development of the new energy industry, the mass production scale of soft-pack batteries continues to expand. The accuracy of their appearance and dimensions directly affects the compatibility of subsequent module assembly and the safety performance of the whole machine operation. The mass production process has put forward higher requirements for the accuracy and efficiency of battery size detection.

[0003] Traditional contact-based inspection methods that rely on manual measurement tools have limitations such as low inspection efficiency, poor data consistency, and easy damage to the soft-pack battery casing. They are no longer suitable for the inspection needs of large-scale production. Non-contact automated inspection equipment based on machine vision is gradually becoming the mainstream choice in the industry.

[0004] The accuracy of visual dimension inspection results highly depends on the consistency of workpiece positioning. The stability and reliability of the positioning reference are the core prerequisites for ensuring the repeatability and traceability of inspection data. Existing automated inspection equipment generally adopts a design architecture of fixed frame reference combined with dynamic platform positioning: the front-end positioning reference is fixedly installed on the equipment frame corresponding to the inspection station, and the lateral clamping and end-pushing components are assembled on the moving platform together with the workpiece carrying station; after the platform carries the workpiece to the inspection station, the workpiece is first aligned by lateral clamping, and then the end-pushing components push the workpiece to abut against the front-end positioning reference surface. After positioning is completed, visual acquisition is initiated.

[0005] Existing equipment typically uses rigid stop structures for front-end positioning references, which are locked to the inspection station on the frame with fasteners. Each set of references can only correspond to one type of battery length. When the production line switches to different lengths of pouch batteries, the machine must be stopped to disassemble the locking structure of the reference stop. After replacing the reference component with the corresponding specification, the relative distance between the reference surface and the workpiece station must be repeatedly adjusted using measuring tools to complete the position calibration. The entire changeover adjustment process is cumbersome and time-consuming, directly affecting the overall operating efficiency of the production line. At the same time, the accuracy of changeover calibration depends on the operator's experience, and the consistency of the reference position after different batches of changeovers is difficult to guarantee, easily introducing human positioning errors. This makes it unsuitable for the inspection requirements of flexible mass production of multi-specification pouch batteries.

[0006] In summary, technical personnel are urgently needed to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a dual-station battery size inspection machine, which aims to solve the problems of cumbersome front-end positioning reference change operations, poor calibration consistency, and difficulty in adapting to the flexible mass production inspection needs of multi-specification soft-pack batteries in existing equipment.

[0008] This invention relates to a dual-station battery size inspection machine, including a vision inspection component, a stage, a transfer drive mechanism, and a positioning mechanism; The platform is arranged side by side along the transfer direction with a first station carrier plate and a second station carrier plate, which are used to carry the first soft-pack battery to be tested and the second soft-pack battery to be tested, respectively. The visual inspection component is fixedly installed, and the working space directly below it forms the inspection area, which performs optical imaging and size inspection on the first or second soft-pack battery to be inspected that enters the inspection area. The transfer drive mechanism is connected to the platform drive, driving the platform to reciprocate along the transfer direction, so that the first station platform and the second station platform alternately enter the detection area; The positioning mechanism includes a first reference switching positioning component, a second reference switching positioning component, a first station positioning component, and a second station positioning component; Both the first reference switching and positioning component and the second reference switching and positioning component are supported by the platform and are arranged in sequence on the front side of the first station carrier plate and the second station carrier plate, moving synchronously with the platform along the transfer direction. The first reference switching positioning component moves independently in the direction of approaching and moving away from the first work station carrier plate and in the vertical direction. When it descends to the work station, it forms a first front-end positioning reference surface that matches the specifications of the first soft-pack battery to be tested. The second reference switching positioning component moves independently in the direction of approaching and moving away from the second work station carrier plate and in the vertical direction. When it descends to the work station, it forms a second front-end positioning reference surface that matches the specifications of the second soft-pack battery to be tested. The first station positioning component is matched with the first station carrier plate and moves synchronously with the stage. It performs left-right centering positioning on the first soft-pack battery to be tested. When the first station carrier plate enters the testing area, it pushes the first soft-pack battery to be tested forward to its front end to abut against the first front end positioning reference surface, thus completing the precise positioning in the front-back direction. The second station positioning component is matched with the second station carrier plate and moves synchronously with the stage. It performs left-right centering positioning on the second soft-pack battery to be tested. When the second station carrier plate enters the testing area, it pushes the second soft-pack battery to be tested forward to its front end to abut against the second front-end positioning reference surface, thus completing the precise front-back positioning.

[0009] As a further improvement to the technical solution disclosed in this invention, the first station positioning component includes a first centering clamping unit and a first tail push unit; the first centering clamping unit is arranged on the left and right sides of the first station carrier plate, and simultaneously clamps the two end faces of the first soft pack battery to be tested in the left and right directions to complete the centering positioning of the first soft pack battery to be tested in the left and right directions on the first station carrier plate; the first tail push unit is arranged on the rear end side of the first station carrier plate, and pushes the first soft pack battery to be tested in the front and rear directions to make the front end face of the first soft pack battery to be tested abut against the first front end positioning reference surface; The second station positioning component includes a second centering clamping unit and a second tail pusher unit. The second centering clamping unit is arranged on the left and right sides of the second station carrier plate and simultaneously clamps the two end faces of the second soft-pack battery to be tested in the left and right directions to complete the centering positioning of the second soft-pack battery to be tested in the left and right directions on the second station carrier plate. The second tail pusher unit is arranged on the rear end side of the second station carrier plate and pushes the second soft-pack battery to be tested in the front and rear directions so that the front end face of the second soft-pack battery to be tested is against the second front end positioning reference surface.

[0010] As a further improvement to the technical solution disclosed in this invention, the first centering clamping unit includes a first clamping drive, a first synchronous transmission component, and two symmetrically arranged first clamping arms; the first clamping drive is fixed to the side of the first workstation carrier plate, and outputs synchronous reverse power through the first synchronous transmission component to drive the two first clamping arms to move synchronously towards or away from each other in the left and right directions; when the two first clamping arms move towards each other, they synchronously abut against the left and right sides of the first soft-pack battery to be tested, and complete the centering positioning with the geometric center of the workpiece as the reference. The second centering clamping unit includes a second clamping drive, a second synchronous transmission component, and two symmetrically arranged second clamping arms. The second clamping drive is fixed to the side of the second workstation carrier plate and outputs synchronous reverse power through the second synchronous transmission component to drive the two second clamping arms to move synchronously towards or away from each other in the left-right direction. When the two second clamping arms move towards each other, they synchronously abut against the left and right sides of the second soft-pack battery to be tested, and complete the centering positioning with the geometric center of the workpiece as the reference.

[0011] As a further improvement to the technical solution disclosed in this invention, one of the two first clamping arms includes a first arm body, a first pressure-applying member, and a first compression spring. The first arm body is driven to move by the first synchronous transmission component; the first pressure component is slidably assembled in the left and right direction at the clamping end of the first arm body; the first compression spring is disposed between the first arm body and the first pressure component, and applies an elastic force toward the first soft-pack battery to be tested to the first pressure component. One of the two second clamping arms includes a second arm body, a second pressure-applying element, and a second compression spring; The second arm body is driven to move by the second synchronous transmission component; the second pressure component is slidably assembled in the left and right direction at the clamping end of the second arm body; the second compression spring is disposed between the second arm body and the second pressure component, and applies an elastic force toward the second soft-pack battery to be tested to the second pressure component.

[0012] As a further improvement to the technical solution disclosed in this invention, the first tail push unit includes a first tail push drive and a first tail push assembly; the first tail push drive is fixed to the rear end of the first station carrier plate and the output direction is set along the front-back direction; the first tail push assembly is assembled at the output end of the first tail push drive and reciprocates with the first tail push drive along the front-back direction; the front end face of the first tail push assembly is in contact with the rear end face of the first soft-pack battery to be tested, and pushes the first soft-pack battery to be tested forward until the front end face is in contact with the first front end positioning reference surface; The second tail push unit includes a second tail push drive and a second tail push assembly; the second tail push drive is fixed to the rear end of the second station carrier plate and its output direction is set along the front-rear direction; the second tail push assembly is assembled at the output end of the second tail push drive and reciprocates with the second tail push drive in the front-rear direction; the front end face of the second tail push assembly is in contact with the rear end face of the second soft-pack battery to be tested, and pushes the second soft-pack battery to be tested forward until its front end face is in contact with the second front end positioning reference surface.

[0013] As a further improvement to the technical solution disclosed in this invention, the first tail thruster unit further includes a first pressure sensor; the second tail thruster unit further includes a second pressure sensor. The force detection surface of the first pressure sensor is arranged coaxially with the pushing direction to collect the axial thrust during the process of the first tail thrust assembly pushing the first soft-pack battery to be tested; when the thrust value detected by the first pressure sensor reaches the preset positioning threshold, the first tail thrust drive component stops moving forward and maintains the current thrust. The force detection surface of the second pressure sensor is arranged coaxially with the pushing direction to collect the axial thrust of the second tail thrust assembly during the process of pushing the second soft-pack battery to be tested; when the thrust value detected by the second pressure sensor reaches the preset positioning threshold, the second tail thrust drive stops moving forward and maintains the current thrust.

[0014] As a further improvement to the technical solution disclosed in this invention, the reciprocating motion of the first reference switching positioning component in the front-back direction is used to adjust the distance between the first front-end positioning reference surface and the first station carrier plate, adapting to the first soft-pack battery to be tested with different length specifications; the reciprocating motion of the second reference switching positioning component in the front-back direction is used to adjust the distance between the second front-end positioning reference surface and the second station carrier plate, adapting to the second soft-pack battery to be tested with different length specifications; the reciprocating motion of the first reference switching positioning component and the second reference switching positioning component in the vertical direction are both used to lift during the loading and unloading stage to avoid the workpiece picking and placing path, and to lower to the working position during the positioning stage to form a rigid positioning reference.

[0015] As a further improvement to the technical solution disclosed in this invention, it also includes a mounting base; the mounting base serves as a shared mounting foundation for the first reference switching positioning component and the second reference switching positioning component; The mounting base is slidably assembled onto the platform and reciprocates along the direction of approaching and moving away from the first station platform and the second station platform. The first reference switching and positioning component includes a first lifting drive, a first rotary indexing plate, and several first reference blocks; the first lifting drive is mounted on a mounting base, and its output end is set in the vertical direction; the first rotary indexing plate is driven by the first lifting drive to perform lifting motion; each first reference block is fixed circumferentially to the end face of the first rotary indexing plate, and the reference surface protrusion lengths are different; the first rotary indexing plate rotates in increments, switching the corresponding first reference block to the working position, and its vertical end face facing the first work station carrier plate constitutes the first front-end positioning reference surface; The second reference switching and positioning component includes a second lifting drive, a second rotary indexing plate, and several second reference blocks. The second lifting drive is mounted on the mounting base, and its output end is set in the vertical direction. The second rotary indexing plate is driven by the second lifting drive to perform lifting motion. Each second reference block is fixed circumferentially to the end face of the second rotary indexing plate, and the reference surface protrusion lengths are different. The second rotary indexing plate rotates in increments, switching the corresponding second reference block to the working position, and its vertical end face facing the second work station carrier plate constitutes the second front-end positioning reference surface.

[0016] As a further improvement to the technical solution disclosed in this invention, the transfer drive mechanism includes a servo drive component, a ball screw transmission pair, and at least two sets of parallel linear guide pairs; the linear guide pairs are laid along the transfer direction; the platform is slidably assembled on the linear guide pairs; the servo drive component is connected to the platform through the ball screw transmission pair to convert the rotational motion into linear motion and drive the platform to perform reciprocating linear motion.

[0017] As a further improvement to the technical solution disclosed in this invention, the first station carrier plate has a plurality of first vacuum adsorption holes arranged on its bearing end face; the second station carrier plate has a plurality of second vacuum adsorption holes arranged on its bearing end face; the first vacuum adsorption holes are connected to a first external vacuum generating device through a first integrated air passage inside the first station carrier plate, generating a negative pressure adsorption force after the first soft-pack battery to be tested is placed in place, fixing the position of the first soft-pack battery to be tested on the bearing end face of the first station carrier plate; the second vacuum adsorption holes are connected to a second external vacuum generating device through a second integrated air passage inside the second station carrier plate, generating a negative pressure adsorption force after the second soft-pack battery to be tested is placed in place, fixing the position of the second soft-pack battery to be tested on the bearing end face of the second station carrier plate.

[0018] A dual-path parallel testing device includes a frame, a central control unit, and the aforementioned dual-station battery size testing machinery; Two sets of dual-station battery size inspection machines are fixedly assembled side by side on the frame along the transfer direction, and the transfer directions of the two are parallel and in the same direction. The central control unit is electrically connected to the vision inspection component, the transfer drive mechanism, and the positioning mechanism, respectively, and controls two sets of dual-station battery size inspection machines to independently complete the battery transfer, positioning, and size inspection operations.

[0019] Regarding the topic of dual-station battery size inspection machinery, in practical applications, at least the following beneficial technical effects can be achieved, specifically: 1) The first reference switching and positioning component can adjust the relative distance between the first front-end positioning reference surface and the first station carrier plate according to the length specification of the first pouch battery to be tested carried by the first station carrier plate; the second reference switching and positioning component can adjust the relative distance between the second front-end positioning reference surface and the second station carrier plate according to the length specification of the second pouch battery to be tested carried by the second station carrier plate, thereby adapting to pouch battery products of different sizes. Furthermore, during product changeover, there is no need to disassemble the first and second reference switching and positioning components, nor is it necessary to manually calibrate the installation positions of the first and second front-end positioning reference surfaces using measuring tools. Reference specification switching can be completed directly, simplifying the changeover operation process and improving changeover efficiency and reference position consistency. 2) The relative positions of the first reference switching positioning component and the first station positioning component remain fixed, and the relative positions of the second reference switching positioning component and the second station positioning component remain fixed. The positions of the first front-end positioning reference surface relative to the first soft-pack battery to be tested and the positions of the second front-end positioning reference surface relative to the second soft-pack battery to be tested are not affected by the stage movement error, which is conducive to maintaining the positioning accuracy in the front-back direction for a long time and providing a stable positioning basis for dimensional inspection.

[0020] Regarding the dual-path parallel testing equipment, the central control unit independently manages the two sets of dual-station battery size testing machines. With the dual-path parallel and unidirectional arrangement, it enables the synchronous size testing of multiple groups of pouch batteries, improving the testing and processing capacity per unit time. The two sets of dual-station battery size testing machines operate without interfering with each other, meeting the differentiated testing parameter setting requirements of pouch batteries of different specifications. Furthermore, the unidirectional transfer layout facilitates the connection planning of loading and unloading processes. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional schematic diagram of the dual-channel parallel detection device disclosed in this invention.

[0023] Figure 2 This is a three-dimensional schematic diagram from one perspective of the dual-station battery size inspection machine disclosed in this invention.

[0024] Figure 3 This is also a three-dimensional schematic diagram of the dual-station battery size inspection machine disclosed in this invention (with the visual inspection component hidden).

[0025] Figure 4 This is a three-dimensional schematic diagram of the dual-station battery size inspection machine disclosed in this invention (with the visual inspection component, the first light-transmitting plate, and the second light-transmitting plate all hidden).

[0026] Figure 5 This is a three-dimensional schematic diagram from another perspective of the dual-station battery size inspection machine disclosed in this invention (with the visual inspection component hidden).

[0027] Figure 6 yes Figure 3 The front view.

[0028] Figure 7 yes Figure 3 Side view.

[0029] Figure 8 This is a schematic diagram showing the state of the platform and transfer drive mechanism after assembly in the dual-station battery size inspection machine disclosed in this invention.

[0030] Figure 9 This is a three-dimensional schematic diagram of the positioning mechanism in the dual-station battery size inspection machine disclosed in this invention.

[0031] Figure 10 This is a schematic diagram showing the state of the first reference switching and positioning component, the second reference switching and positioning component, the mounting base, and the linear drive module after assembly in the dual-station battery size inspection machine disclosed in this invention.

[0032] Figure 11 This is a schematic diagram showing the relative positional relationship between the first station positioning component and the second station positioning component in the dual-station battery size inspection machine disclosed in this invention, from one perspective.

[0033] Figure 12 This is a schematic diagram showing the relative positional relationship between the first station positioning component and the second station positioning component in the dual-station battery size inspection machine disclosed in this invention, from another perspective.

[0034] Figure 13 yes Figure 11 Top view.

[0035] 1-Vision inspection component; 2-Platform; 3-Transfer drive mechanism; 31-Servo drive component; 32-Ball screw transmission pair; 33-Linear guide pair; 4-Positioning mechanism; 41-First reference switching positioning component; 411-First lifting drive component; 412-First rotary indexing plate; 413-First reference stop; 42-Second reference switching positioning component; 421-Second lifting drive component; 422-Second rotary indexing plate; 423-Second reference stop; 43-First station positioning component; 431-First centering clamping unit; 4311-First clamping drive component; 4312-First synchronous transmission component; 4313-First clamping arm; 43131-First arm body; 43132-First pressure application component; 43133-First compression spring; 432-First tail push unit; 4321-First tail push drive 4322-First tail thrust assembly; 4323-First pressure sensor; 44-Second station positioning assembly; 441-Second centering clamping unit; 4411-Second clamping drive; 4412-Second synchronous transmission; 4413-Second clamping arm; 44131-Second arm body; 44132-Second pressure application component; 44133-Second compression spring; 442-Second tail thrust unit; 4421-Second tail thrust drive; 4422-Second tail thrust assembly; 4423-Second pressure sensor; 5-First station carrier plate; 51-First vacuum adsorption hole; 6-Second station carrier plate; 61-Second vacuum adsorption hole; 7-Mounting base; 8-Linear drive module; 9-First external vacuum generator; 10-Second external vacuum generator; 11-First light-transmitting plate; 12-Second light-transmitting plate. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to specific embodiments. Figure 1 A three-dimensional schematic diagram of the dual-path parallel testing equipment disclosed in this invention is shown. It can be seen that it mainly consists of a frame, a central control unit, and two sets of dual-station battery size testing machines. The two sets of dual-station battery size testing machines are fixedly mounted side-by-side on the frame along the transfer direction, with their transfer directions being parallel and in the same direction. The central control unit is electrically connected to the electrical control functional components of each set of dual-station battery size testing machines, independently controlling each set to complete the entire process of battery transfer, positioning, and size testing.

[0037] As described above, the dual-station battery size inspection machine plays a core role in receiving and inspecting soft-pack batteries, completing high-precision positioning and visual size inspection, and its performance directly determines the inspection accuracy and operating efficiency of the entire dual-path parallel inspection equipment. Figures 2-7 The diagram shows the structure of the dual-station battery size inspection machine disclosed in this invention. It mainly consists of a vision inspection component 1, a platform 2, a transfer drive mechanism 3, and a positioning mechanism 4. The platform 2 serves as a shared mounting base, and its stability and mounting accuracy directly affect the positioning accuracy of each component and the consistency of the inspection data. A first station platform 5 and a second station platform 6 are arranged side-by-side along the transfer direction on the platform 2. The first station platform 5 carries the first soft-pack battery to be inspected, and the second station platform 6 carries the second soft-pack battery to be inspected. The vision inspection component 1 is fixedly mounted, and the working space directly below the vision inspection component 1 forms the inspection area. Within the inspection area, a first light-transmitting plate 11 is installed along the acquisition path of the first station platform 5, and a second light-transmitting plate 12 is installed along the acquisition path of the second station platform 6, providing a uniform and transparent imaging environment for optical acquisition and improving the size inspection efficiency. The imaging clarity and data accuracy are measured; the transfer drive mechanism 3 is connected to the stage 2 and drives the stage 2 to reciprocate along the transfer direction, so that the first station carrier plate 5 and the second station carrier plate 6 alternately enter the detection area; the positioning mechanism 4 moves synchronously with the stage 2 and performs left-right centering calibration and front-back reference positioning on the first soft-pack battery to be tested on the first station carrier plate 5 and the second soft-pack battery to be tested on the second station carrier plate 6, respectively, to ensure that the posture of the soft-pack battery to be tested is completely matched with the acquisition path of the vision detection component 1.

[0038] When the first station carrier plate 5 carries the first pouch battery to be tested, which has been positioned, into the testing area to perform dimensional testing, the second station carrier plate 6 simultaneously completes the loading, unloading, and positioning operations of the second pouch battery to be tested; when the second station carrier plate 6 carries the second pouch battery to be tested, which has been positioned, into the testing area to perform dimensional testing, the first station carrier plate 5 simultaneously completes the loading, unloading, and positioning operations of the first pouch battery to be tested, thus enabling continuous testing of multiple batteries without pausing the testing process.

[0039] like Figure 8 As shown, the transfer drive mechanism 3 mainly consists of a servo drive unit 31, a ball screw transmission pair 32, and at least two sets of parallel linear guide rail pairs 33. The linear guide rail pairs 33 are laid on the equipment base along the transfer direction, and the platform 2 is slidably mounted on the linear guide rail pairs 33. The servo drive unit 31 is connected to the platform 2 through the ball screw transmission pair 32, converting the rotational motion into high-precision linear motion, driving the platform 2 to perform smooth reciprocating linear motion, and improving the positional accuracy and operational smoothness of the first station platform 5 and the second station platform 6 alternately entering and exiting the detection area.

[0040] The first station carrier plate 5 and the second station carrier plate 6 are fixed side by side on the top surface of the platform 2 along the transfer direction, serving as the direct support structure for the soft-pack battery to be tested. The first station carrier plate 5 has several first vacuum adsorption holes 51 on its support end face, and the second station carrier plate 6 has several second vacuum adsorption holes 61 on its support end face. The first vacuum adsorption holes 51 are connected to a first external vacuum generator 9 through a first integrated air passage inside the first station carrier plate 5, generating negative pressure adsorption force after the first soft-pack battery to be tested is positioned, thus fixing the position of the first soft-pack battery to be tested on the support end face of the first station carrier plate 5. The second vacuum adsorption holes 61 are connected to a second external vacuum generator 10 through a second integrated air passage inside the second station carrier plate 6, generating negative pressure adsorption force after the second soft-pack battery to be tested is positioned, thus fixing the position of the second soft-pack battery to be tested on the support end face of the second station carrier plate 6, preventing workpiece displacement during transfer and testing, and maintaining the stability of the testing reference.

[0041] like Figure 4 , Figure 9 As shown, the positioning mechanism 4 consists of a first reference switching positioning component 41, a second reference switching positioning component 42, a first station positioning component 43, and a second station positioning component 44. The four components work together to perform precise correction in both left and right and front and back dimensions for the positional deviation of the soft-pack battery to be tested during placement. The first reference switching and positioning component 41 is arranged on the front side of the first station carrier 5 to form a first front-end positioning reference surface, providing a rigid reference for the front-back positioning of the first station carrier 5. The second reference switching and positioning component 42 is arranged on the front side of the second station carrier 6 to form a second front-end positioning reference surface, providing a rigid reference for the front-back positioning of the second station carrier 6. The first station positioning component 43 is matched with the first station carrier 5 to perform the centering clamping and front-end pushing action of the first soft-pack battery to be tested, so that the first soft-pack battery to be tested is accurately attached to the first front-end positioning reference surface. The second station positioning component 44 is matched with the second station carrier 6 to perform the centering clamping and front-end pushing action of the second soft-pack battery to be tested, so that the second soft-pack battery to be tested is accurately attached to the second front-end positioning reference surface, providing a stable positioning basis for subsequent visual inspection from both left-right and front-back dimensions.

[0042] As a preferred design, such as Figure 10As shown, the positioning mechanism 4 is also equipped with a mounting base 7 and a linear drive module 8. The mounting base 7 serves as a common mounting base for the first reference switching positioning component 41 and the second reference switching positioning component 42. The mounting base 7 is slidably mounted on the front end area of ​​the platform 2. The linear drive module 8 is fixed to the platform 2. The power output end of the linear drive module 8 is connected to the mounting base 7, driving the mounting base 7 to reciprocate along the direction of approaching and moving away from the first station platform 5 and the second station platform 6, synchronously adjusting the distance between the first reference switching positioning component 41 and the first station platform 5, and the distance between the second reference switching positioning component 42 and the second station platform 6, to adapt to soft-pack batteries of different lengths and specifications to be tested.

[0043] The first reference switching and positioning assembly 41 includes a first lifting drive 411, a first rotating indexing disk 412, and a plurality of first reference blocks 413. The first lifting drive 411 is mounted on the mounting base 7 at the position corresponding to the first workstation carrier plate 5, and the output end of the first lifting drive 411 is set in the vertical direction. The first rotating indexing disk 412 is driven by the first lifting drive 411 to perform lifting motion. Each first reference block 413 is fixed circumferentially to the end face of the first rotating indexing disk 412, and the reference surface of each first reference block 413 extends outwards at different lengths. The first rotating indexing disk 412 performs indexing rotation, switching the first reference block 413 of the corresponding specification to the working position. The vertical end face of the first reference block 413 facing the first workstation carrier plate 5 constitutes the first front-end positioning reference surface.

[0044] The second reference switching and positioning assembly 42 includes a second lifting drive 421, a second rotating indexing disk 422, and a plurality of second reference blocks 423. The second lifting drive 421 is mounted on the mounting base 7 at the position corresponding to the second workstation carrier plate 6, and the output end of the second lifting drive 421 is set in the vertical direction. The second rotating indexing disk 422 is driven by the second lifting drive 421 to perform lifting motion. Each second reference block 423 is fixed circumferentially to the end face of the second rotating indexing disk 422, and the reference surface of each second reference block 423 extends outward by different lengths. The second rotating indexing disk 422 performs indexing rotation, switching the second reference block 423 of the corresponding specification to the working position. The vertical end face of the second reference block 423 facing the second workstation carrier plate 6 constitutes the second front-end positioning reference surface.

[0045] In actual operation, both the first reference switching positioning component 41 and the second reference switching positioning component 42 have multi-dimensional adaptation and avoidance capabilities: through the reciprocating motion of the mounting base 7, the distance between the first front-end positioning reference surface and the first workstation carrier plate 5, and the distance between the second front-end positioning reference surface and the second workstation carrier plate 6 can be adjusted over a wide range to cover soft-pack battery products of different length ranges; through the indexing rotation of the first rotating indexing plate 412, the first reference stop 413 with different extension lengths can be quickly switched to the working position, and through the indexing rotation of the second rotating indexing plate 422, the second reference stop 423 with different extension lengths can be quickly switched to the working position to achieve small span regulation. The system achieves precise alignment of specifications. Through the vertical reciprocating motion of the first lifting drive component 411, the first reference block 413 is raised during the loading and unloading stage to avoid the path of the first soft-pack battery to be tested. Similarly, through the vertical reciprocating motion of the second lifting drive component 421, the second reference block 423 is raised during the loading and unloading stage to avoid the path of the second soft-pack battery to be tested. During the positioning stage, the first lifting drive component 411 drives the first reference block 413 down to the working position to form a rigid positioning reference, and the second lifting drive component 421 drives the second reference block 423 down to the working position to form a rigid positioning reference. The entire process allows for the switching and adjustment of reference specifications without disassembling components.

[0046] Both the first reference switching positioning component 41 and the first station positioning component 43 move synchronously with the stage 2, and their relative positions remain constant. Similarly, the second reference switching positioning component 42 and the second station positioning component 44 move synchronously with the stage 2, and their relative positions remain constant. The positions of the first front-end positioning reference surface relative to the first soft-pack battery to be tested and the positions of the second front-end positioning reference surface relative to the second soft-pack battery to be tested are not affected by the stage transfer error, maintaining long-term positioning accuracy in the front-to-back direction and providing a stable positioning basis for dimensional inspection.

[0047] like Figure 11 , Figure 12As shown, the first station positioning component 43 includes a first centering clamping unit 431 and a first tail pusher unit 432, and the second station positioning component 44 includes a second centering clamping unit 441 and a second tail pusher unit 442. The first station positioning component 43 and the second station positioning component 44 are structurally symmetrical and cooperate with the first station carrier plate 5 and the second station carrier plate 6 to complete positioning operations in two dimensions: left-right and front-back. Specifically, the first centering clamping unit 431 is arranged on the left and right sides of the first station carrier plate 5, and simultaneously clamps the two end faces of the first soft-pack battery to be tested in the left-right direction, completing the centering positioning of the first soft-pack battery to be tested on the first station carrier plate 5 in the left-right direction; the first tail pusher unit 432 is arranged on the rear end side of the first station carrier plate 5, and pushes the first soft-pack battery to be tested in the front-back direction, so that the front end face of the first soft-pack battery to be tested is against the first front end positioning reference surface. The second centering clamping unit 441 is arranged on the left and right sides of the second station carrier plate 6, and simultaneously clamps the two end faces of the second soft pack battery to be tested in the left and right directions, thus completing the centering positioning of the second soft pack battery to be tested on the second station carrier plate 6 in the left and right directions; the second tail pushing unit 442 is arranged on the rear end side of the second station carrier plate 6, and pushes the second soft pack battery to be tested in the front and back directions, so that the front end face of the second soft pack battery to be tested is in contact with the second front end positioning reference surface.

[0048] The first centering clamping unit 431 includes a first clamping drive 4311, a first synchronous transmission 4312, and two symmetrically arranged first clamping arms 4313. The first clamping drive 4311 is fixed to the side of the first workstation carrier plate 5 and outputs synchronous reverse power through the first synchronous transmission 4312 to drive the two first clamping arms 4313 to move synchronously towards or away from each other in the left and right directions. When the two first clamping arms 4313 move towards each other, they synchronously abut against the left and right sides of the first soft-pack battery to be tested, and complete the centering positioning with the geometric center of the workpiece as the reference.

[0049] The second centering clamping unit 441 includes a second clamping drive 4411, a second synchronous transmission 4412, and two symmetrically arranged second clamping arms 4413. The second clamping drive 4411 is fixed to the side of the second workstation carrier plate 6 and outputs synchronous reverse power through the second synchronous transmission 4412 to drive the two second clamping arms 4413 to move synchronously towards or away from each other in the left and right directions. When the two second clamping arms 4413 move towards each other, they synchronously abut against the left and right sides of the second soft-pack battery to be tested, and complete the centering positioning with the geometric center of the workpiece as the reference.

[0050] like Figure 13As shown, one of the two first clamping arms 4313 includes a first arm body 43131, a first pressure-applying member 43132, and a first compression spring 43133. The first arm body 43131 is driven to move by a first synchronous transmission member 4312. The first pressure-applying member 43132 is slidably mounted on the clamping end of the first arm body 43131 in the left-right direction. The first compression spring 43133 is disposed between the first arm body 43131 and the first pressure-applying member 43132, applying an elastic force toward the first pressure-applying member 43132 to form a flexible buffer during clamping. The other first clamping arm 4313 is a rigid structure, serving as a lateral reference for clamping and positioning. The two work together to maintain a uniform and gentle clamping force, while ensuring the positional accuracy of the centered positioning, adapting to the shell characteristics of the soft-pack battery.

[0051] One of the two second clamping arms 4413 includes a second arm body 44131, a second pressure-applying member 44132, and a second compression spring 44133. The second arm body 44131 is driven to move by the second synchronous transmission member 4412. The second pressure-applying member 44132 is slidably mounted on the clamping end of the second arm body 44131 in the left-right direction. The second compression spring 44133 is disposed between the second arm body 44131 and the second pressure-applying member 44132, applying an elastic force toward the second soft-pack battery to be tested to the second pressure-applying member 44132, forming a flexible buffer during clamping. The other second clamping arm 4413 is a rigid structure, serving as a lateral reference for clamping and positioning. The two work together to maintain a uniform and gentle clamping force, while ensuring the positional accuracy of the centered positioning.

[0052] The first tail push unit 432 includes a first tail push drive 4321, a first tail push assembly 4322, and a first pressure sensor 4323. The first tail push drive 4321 is fixed to the rear end of the first workstation carrier plate 5, and the output direction of the first tail push drive 4321 is set along the front-back direction. The first tail push assembly 4322 is assembled at the output end of the first tail push drive 4321 and reciprocates along the front-back direction with the first tail push drive 4321. The front end face of the first tail push assembly 4322 is in contact with the rear end face of the first soft-pack battery to be tested, pushing the first soft-pack battery to be tested forward until the front end face is in contact with the first front end positioning reference surface. The force detection surface of the first pressure sensor 4323 is arranged coaxially with the pushing direction, and collects the axial thrust during the process of the first tail push assembly 4322 pushing the first soft-pack battery to be tested. When the thrust value reaches the preset positioning threshold, the first tail push drive 4321 stops pushing forward and maintains the current thrust, so as to achieve full contact between the workpiece end face and the reference surface while avoiding excessive thrust causing workpiece deformation and damage.

[0053] The second tail thrust unit 442 includes a second tail thrust drive 4421, a second tail thrust assembly 4422, and a second pressure sensor 4423. The second tail thrust drive 4421 is fixed to the rear end of the second station carrier plate 6, and the output direction of the second tail thrust drive 4421 is set along the front-rear direction. The second tail thrust assembly 4422 is assembled at the output end of the second tail thrust drive 4421 and reciprocates with the second tail thrust drive 4421 along the front-rear direction. The front end face of the second tail thrust assembly 4422 is in contact with the rear end face of the second soft-pack battery to be tested, pushing the second soft-pack battery to be tested forward until the front end face is against the second front end positioning reference surface. The force detection surface of the second pressure sensor 4423 is arranged coaxially with the pushing direction, and collects the axial thrust during the process of the second tail thrust assembly 4422 pushing the second soft-pack battery to be tested. When the thrust value reaches the preset positioning threshold, the second tail thrust drive 4421 stops pushing forward and maintains the current thrust.

[0054] In actual positioning operations, the centering clamping action, the benchmark adjustment action, and the tail push action of a single workstation form a strict timing sequence to ensure that the calibration in both the left and right and front and back directions proceeds in an orderly manner without interfering with each other. Taking the operation process of the first station as an example: After the first pouch battery to be tested is placed on the carrier plate 5 of the first station, the first centering clamping unit 431 starts its operation first, driving the two first clamping arms 4313 to move synchronously towards each other, completing the centering positioning of the first pouch battery to be tested in the left and right directions; then the first reference switching positioning component 41 descends to the working position, and completes the indexing switching and front and rear position adjustment of the first reference block 413 according to the current specifications of the first pouch battery to be tested, forming the first front-end positioning reference surface that matches the size of the first pouch battery to be tested; then the first tail push unit 432 starts, pushing the first pouch battery to be tested forward until the front end face is against the first front-end positioning reference surface. After the first pressure sensor 4323 feedbacks that the pushing force is up to standard, it maintains the pushing force. At the same time, the first vacuum suction hole 51 starts to generate negative pressure, which stably fixes the first pouch battery to be tested on the bearing end face of the carrier plate 5 of the first station. The positioning operation process of the second station is completely the same as that of the first station.

[0055] After positioning is completed, the transfer drive mechanism 3 drives the platform 2 to move and send the positioned workstation plate into the inspection area, where the vision inspection component 1 completes visual imaging and dimensional inspection. At the same time, the other workstation plate simultaneously performs loading, unloading and positioning processes. The first workstation plate 5 and the second workstation plate 6 work alternately to improve the continuity and efficiency of the inspection operation.

[0056] Regarding the dual-path parallel testing equipment, the central control unit independently manages the two sets of dual-station battery size testing machines. With the dual-path parallel and unidirectional arrangement, it enables the synchronous size testing of multiple sets of pouch batteries, improving the testing and processing capacity per unit time. The two sets of dual-station battery size testing machines operate without interfering with each other, meeting the differentiated testing parameter setting requirements of pouch batteries of different specifications. Furthermore, the unidirectional transfer layout facilitates the connection planning of loading and unloading processes.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-station battery size inspection machine, characterized in that, This includes a vision inspection component, a platform, a transfer drive mechanism, and a positioning mechanism; The platform is provided with a first station carrier plate and a second station carrier plate arranged side by side along the transfer direction, so as to support the first soft-pack battery to be tested and the second soft-pack battery to be tested, respectively. The visual inspection component is fixedly mounted, and the working space directly below it forms an inspection area, which performs optical imaging and size inspection on the first or second soft-pack battery to be inspected that enters the inspection area. The transfer drive mechanism is connected to the platform and drives the platform to reciprocate along the transfer direction, so that the first station platform and the second station platform alternately enter the detection area. The positioning mechanism includes a first reference switching positioning component, a second reference switching positioning component, a first workstation positioning component, and a second workstation positioning component; Both the first reference switching and positioning component and the second reference switching and positioning component are supported by the platform and are arranged sequentially on the front end side of the first workstation plate and the second workstation plate, and move synchronously with the platform along the transfer direction. The first reference switching positioning component reciprocates independently along the direction of approaching and moving away from the first workstation carrier plate and the vertical direction. When it descends to the workstation, it forms a first front-end positioning reference surface that matches the specifications of the first soft-pack battery to be tested. The second reference switching positioning component reciprocates independently in the direction of approaching and moving away from the second workstation carrier plate and in the vertical direction. When it descends to the workstation, it forms a second front-end positioning reference surface that matches the specifications of the second soft-pack battery to be tested. The first station positioning component is matched with the first station carrier plate and moves synchronously with the platform. It performs left-right centering positioning on the first soft-pack battery to be tested. When the first station carrier plate enters the testing area, it pushes the first soft-pack battery to be tested forward to its front end to abut against the first front end positioning reference surface, thus completing the precise positioning in the front-back direction. The second station positioning component is matched with the second station carrier plate and moves synchronously with the platform. It performs left-right centering positioning on the second soft-pack battery to be tested. When the second station carrier plate enters the testing area, it pushes the second soft-pack battery to be tested forward to its front end to abut against the second front end positioning reference surface, thus completing the precise front-back positioning.

2. The dual-station battery size inspection machine according to claim 1, characterized in that, The first station positioning component includes a first centering clamping unit and a first tail pusher unit; the first centering clamping unit is arranged on the left and right sides of the first station carrier plate, and simultaneously clamps the two end faces of the first soft pack battery to be tested in the left and right directions to complete the centering positioning of the first soft pack battery to be tested in the left and right directions on the first station carrier plate; the first tail pusher unit is arranged on the rear end side of the first station carrier plate, and pushes the first soft pack battery to be tested in the front and rear directions so that the front end face of the first soft pack battery to be tested is in contact with the first front end positioning reference surface; The second station positioning component includes a second centering clamping unit and a second tail pusher unit. The second centering clamping unit is arranged on the left and right sides of the second station carrier plate and simultaneously clamps the two end faces of the second soft-pack battery to be tested in the left and right directions to complete the centering positioning of the second soft-pack battery to be tested in the left and right directions on the second station carrier plate. The second tail pusher unit is arranged on the rear end side of the second station carrier plate and pushes the second soft-pack battery to be tested in the front and rear directions so that the front end face of the second soft-pack battery to be tested is against the second front end positioning reference surface.

3. The dual-station battery size inspection machine according to claim 2, characterized in that, The first centering clamping unit includes a first clamping drive, a first synchronous transmission component, and two symmetrically arranged first clamping arms. The first clamping drive is fixed to the side of the first workstation carrier plate and outputs synchronous reverse power through the first synchronous transmission component to drive the two first clamping arms to move synchronously towards or away from each other in the left-right direction. When the two first clamping arms move towards each other, they synchronously abut against the left and right sides of the first soft-pack battery to be tested, and complete the centering positioning with the geometric center of the workpiece as the reference. The second centering clamping unit includes a second clamping drive, a second synchronous transmission component, and two symmetrically arranged second clamping arms. The second clamping drive is fixed to the side of the second workstation carrier plate and outputs synchronous reverse power through the second synchronous transmission component to drive the two second clamping arms to move synchronously towards or away from each other in the left-right direction. When the two second clamping arms move towards each other, they synchronously abut against the left and right sides of the second soft-pack battery to be tested, and centering is completed with the geometric center of the workpiece as the reference.

4. The dual-station battery size inspection machine according to claim 3, characterized in that, One of the two first clamping arms includes a first arm body, a first pressure-applying element, and a first compression spring; The first arm body is driven to move by the first synchronous transmission member; the first pressure member is slidably assembled to the clamping end of the first arm body in the left-right direction; the first compression spring is disposed between the first arm body and the first pressure member, and applies an elastic force toward the first soft-pack battery to be tested to the first pressure member; One of the two second clamping arms includes a second arm body, a second pressure-applying element, and a second compression spring; The second arm body is driven to move by the second synchronous transmission member; the second pressure member is slidably assembled in the left and right direction at the clamping end of the second arm body; the second compression spring is disposed between the second arm body and the second pressure member, and applies an elastic force toward the second soft-pack battery to be tested to the second pressure member.

5. The dual-station battery size inspection machine according to claim 2, characterized in that, The first tail push unit includes a first tail push drive and a first tail push assembly; the first tail push drive is fixed to the rear end of the first workstation carrier plate and the output direction is set along the front-back direction; the first tail push assembly is assembled at the output end of the first tail push drive and reciprocates with the first tail push drive in the front-back direction. The front end face of the first tail push component is attached to the rear end face of the first soft-pack battery to be tested, and pushes the first soft-pack battery to be tested forward until the front end face is attached to the first front end positioning reference surface. The second tail thrust unit includes a second tail thrust drive and a second tail thrust assembly; the second tail thrust drive is fixed to the rear end of the second workstation carrier plate and its output direction is set along the front-back direction; the second tail thrust assembly is assembled at the output end of the second tail thrust drive and reciprocates with the second tail thrust drive along the front-back direction. The front end face of the second tail pusher assembly is attached to the rear end face of the second soft-pack battery to be tested, and pushes the second soft-pack battery to be tested forward until the front end face is attached to the second front end positioning reference surface.

6. The dual-station battery size inspection machine according to claim 5, characterized in that, The first tail thruster unit further includes a first pressure sensor; the second tail thruster unit further includes a second pressure sensor; The force detection surface of the first pressure sensor is arranged coaxially with the pushing direction to collect the axial thrust of the first tail push assembly during the process of pushing the first soft-pack battery to be tested; when the thrust value detected by the first pressure sensor reaches the preset positioning threshold, the first tail push drive component stops moving forward and maintains the current thrust. The force detection surface of the second pressure sensor is arranged coaxially with the pushing direction to collect the axial thrust of the second tail thrust assembly during the process of pushing the second soft-pack battery to be tested; when the thrust value detected by the second pressure sensor reaches the preset positioning threshold, the second tail thrust drive stops moving forward and maintains the current thrust.

7. The dual-station battery size inspection machine according to claim 1, characterized in that, The reciprocating motion of the first reference switching positioning component in the front and rear directions is used to adjust the distance between the first front positioning reference surface and the first workstation carrier plate, adapting to the first soft-pack battery to be tested with different length specifications. The reciprocating motion of the second reference switching positioning component in the front and rear directions is used to adjust the distance between the second front positioning reference surface and the second workstation carrier plate, adapting to the second soft-pack battery to be tested with different length specifications; The vertical reciprocating motion of the first reference switching positioning component and the second reference switching positioning component is used to lift them during the loading and unloading stage to avoid the workpiece picking and placing path, and to lower them to the working position during the positioning stage to form a rigid positioning reference.

8. The dual-station battery size inspection machine according to claim 7, characterized in that, It also includes a mounting base; the mounting base serves as a shared mounting foundation for the first reference switching positioning component and the second reference switching positioning component; The mounting base is slidably assembled to the platform and reciprocates along the direction of approaching and moving away from the first workstation plate and the second workstation plate; The first reference switching and positioning component includes a first lifting drive, a first rotating indexing disk, and a plurality of first reference blocks; the first lifting drive is mounted on the mounting base, and its output end is arranged in the vertical direction; the first rotating indexing disk is driven by the first lifting drive to perform lifting motion; each of the first reference blocks is fixed circumferentially to the end face of the first rotating indexing disk, and the reference face protrusion lengths are different. The first rotary indexing plate rotates in increments, switching the corresponding first reference block to the working position, and its vertical end face facing the first work station carrier plate constitutes the first front-end positioning reference surface. The second reference switching and positioning component includes a second lifting drive, a second rotary indexing disk, and several second reference stops; the second lifting drive is mounted on the mounting base, and its output end is arranged in the vertical direction; the second rotary indexing disk is driven by the second lifting drive to perform lifting motion; Each of the second reference blocks is fixed circumferentially to the end face of the second rotating indexing plate, and the reference surfaces extend out by different lengths; the second rotating indexing plate rotates in increments, switching the corresponding second reference block to the working position, and its vertical end face facing the second work station carrier plate constitutes the second front-end positioning reference surface.

9. The dual-station battery size inspection machine according to claim 1, characterized in that, The transfer drive mechanism includes a servo drive component, a ball screw transmission pair, and at least two sets of parallel linear guide pairs; the linear guide pairs are laid along the transfer direction; the platform is slidably assembled onto the linear guide pairs; The servo drive unit is connected to the platform via the ball screw transmission pair, converting rotary motion into linear motion and driving the platform to perform reciprocating linear motion.

10. The dual-station battery size inspection machine according to claim 1, characterized in that, The first station carrier plate has a plurality of first vacuum adsorption holes on its bearing end face; the second station carrier plate has a plurality of second vacuum adsorption holes on its bearing end face; the first vacuum adsorption holes are connected to a first external vacuum generator through a first integrated air passage inside the first station carrier plate, generating a negative pressure adsorption force after the first soft-pack battery to be tested is placed in place, fixing the position of the first soft-pack battery to be tested on the bearing end face of the first station carrier plate; the second vacuum adsorption holes are connected to a second external vacuum generator through a second integrated air passage inside the second station carrier plate, generating a negative pressure adsorption force after the second soft-pack battery to be tested is placed in place, fixing the position of the second soft-pack battery to be tested on the bearing end face of the second station carrier plate.

11. A dual-channel parallel detection device, characterized in that, Includes a frame, a central control unit, and two sets of dual-station battery size inspection machines as described in claims 1-10; Two sets of dual-station battery size inspection machines are fixedly assembled side by side on the frame along the transfer direction, and their transfer directions are parallel to each other and in the same direction. The central control unit is electrically connected to the vision inspection component, the transfer drive mechanism, and the positioning mechanism of the two sets of dual-station battery size inspection machines, respectively, and controls the two sets of dual-station battery size inspection machines to independently complete the battery transfer, positioning, and size inspection operations.

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