A soft package battery detection device

Abstract

The application discloses a soft package battery detection device, relates to the technical field of soft package battery detection, and comprises a transmission mechanism arranged on a rack and used for transmitting the soft package battery, wherein the rack is sequentially provided with a first detection mechanism and a second detection mechanism along the transmission direction of the soft package battery. The first detection mechanism comprises two cameras which are symmetrically arranged on the rack and used for collecting images of the tab of the soft package battery and transmitting the collected images to a control unit. The second detection mechanism comprises a detector, a differential pressure detection assembly used for differentially detecting the soft package battery and a DCIR detection assembly used for detecting the DCIR of the soft package battery. The differential pressure detection assembly comprises two sets of oppositely arranged differential pressure detection units. After the soft package battery is processed, the tab welding detection, the differential pressure detection and the DCIR detection are sequentially performed on the soft package battery, so that the full-process online detection of the soft package battery is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soft package battery detection, in particular to a soft package battery detection device. BACKGROUND

[0002] In the process of continuous development in the field of new energy, soft package batteries gradually become the focus of battery technology research and application due to their significant advantages in energy density and safety compared to traditional liquid batteries. The electrolyte system of soft package batteries is between liquid and full solid, retaining the high ionic conductivity of liquid electrolyte and improving mechanical stability and thermal safety through the introduction of solid components. However, in the process of large-scale production of soft package batteries, the welding of tabs, the consistency of cell pressure difference, and the stability of DCIR play a decisive role in battery performance and yield. Therefore, after the completion of soft package battery processing, it is necessary to detect the tab welding, pressure difference, and DCIR.

[0003] In the prior art, offline sampling is often used for tab welding detection, pressure difference detection, and DCIR detection of soft package batteries, which is difficult to achieve full-process online monitoring. SUMMARY

[0004] To solve the problem that soft package batteries cannot be detected online in the prior art, the present application provides a soft package battery detection device that sequentially detects the tab welding, pressure difference, and DCIR of soft package batteries after processing, achieving full-process online detection of soft package batteries.

[0005] To achieve the above purpose, the specific scheme adopted by the present application is as follows: a soft package battery detection device, the soft package battery includes a plurality of sheet-shaped battery cells, the detection device includes a transmission mechanism arranged on a rack and used for transmitting the soft package battery, and the rack is sequentially provided with a first detection mechanism and a second detection mechanism along the transmission direction of the soft package battery. The first detection mechanism includes two cameras symmetrically arranged on the rack and used for collecting images of the tabs of the soft package battery, and the collected images are transmitted to a control unit. The second detection mechanism includes a detector, a pressure difference detection assembly for pressure difference detection of the soft package battery, and a DCIR detection assembly for DCIR detection of the soft package battery. The pressure difference detection assembly includes two groups of oppositely arranged pressure difference detection units, and the pressure difference detection unit includes a plurality of detection rods corresponding to the tabs of the sheet-shaped battery cells. One end of the detection rod can be in contact with the corresponding tab, and the other end is electrically connected to the detector. The DCIR detection assembly includes two groups of DCIR detection units corresponding to the two electrodes of the soft package battery, and the DCIR detection unit includes a detection head for connecting to the electrode of the soft package battery. Both detection heads are electrically connected to the detector.

[0006] As one of the above-mentioned soft package battery detection equipment optimization scheme: the first support frame is fixedly connected on the rack, and the first mounting plate for mounting the camera is arranged on the first support frame.

[0007] As another soft package battery detection equipment optimization scheme of the above-mentioned soft package battery detection equipment: the mounting frame is arranged at both ends of the first mounting plate, the mounting frame can slide along the direction perpendicular to the soft package battery and can be fixed, and the camera is fixedly arranged on the mounting frame.

[0008] As another soft package battery detection equipment optimization scheme of the above-mentioned soft package battery detection equipment: the second support frame is fixedly connected on the rack, and the two differential pressure detection units and the two DCIR detection units are arranged on the second support frame.

[0009] As another soft package battery detection equipment optimization scheme of the above-mentioned soft package battery detection equipment: the differential pressure detection unit further comprises a first sliding plate slidingly arranged on the second support frame, and the first sliding plate is driven by the first air cylinder, and the detection rods of the differential pressure detection unit are fixedly installed on the first sliding plate.

[0010] As another soft package battery detection equipment optimization scheme of the above-mentioned soft package battery detection equipment: the first fixed plate is fixedly connected on the second support frame, the first air cylinder is fixedly installed on the first fixed plate, and the first sliding plate is slidingly connected with the first fixed plate.

[0011] As another soft package battery detection equipment optimization scheme of the above-mentioned soft package battery detection equipment: the DCIR detection unit further comprises a second fixed plate for mounting the detection head, the second fixed plate can move up and down by being driven by the second air cylinder, the detection head moves up and down with the second fixed plate, and can be connected with or separated from the electrode of the soft package battery.

[0012] As another soft package battery detection equipment optimization scheme of the above-mentioned soft package battery detection equipment: the connecting plate fixedly connected with the piston of the second air cylinder is arranged above the second fixed plate, and a plurality of springs are arranged between the connecting plate and the second fixed plate, one end of the spring is fixedly connected with the connecting plate, and the other end of the spring is connected with the second fixed plate.

[0013] As another soft package battery detection equipment optimization scheme of the above-mentioned soft package battery detection equipment: the third air cylinder mounted on the rack is arranged between the two DCIR detection units, the top plate is arranged above the third air cylinder, the third air cylinder drives the top plate to move upward, and in turn drives the soft package battery above it to move upward.

[0014] As another soft package battery detection equipment optimization scheme of the above-mentioned soft package battery detection equipment: the top plate is provided with a plurality of fourth air cylinders for pushing the soft package battery away from the top plate, a water tank is arranged on one side of the rack, and a second air cylinder for pushing the soft package battery away from the top plate into the water tank is arranged on the other side of the rack.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. The soft package battery detection equipment provided by the present application is characterized in that the soft package battery slides along the extension direction of the transmission mechanism, the camera takes a picture of the tab on both sides of the soft package battery when the soft package battery slides to the position of the first detection mechanism, that is, the image of the tab is collected and transmitted to the control unit for post-welding detection of the tab, and after the post-welding detection of the tab is completed, the soft package battery continues to slide along the transmission mechanism to the second detection mechanism, the detection rod contacts the corresponding tab, and the detector collects the voltage of each sheet-shaped battery cell; at the same time, the two detection heads are electrically connected to the two electrodes of the soft package battery, and the soft package battery is subjected to DCIR detection, realizing online detection of the whole process and improving the consistency and reliability of the soft package battery product.

[0017] 2. In the present application, the third air cylinder pushes the top plate to move upward, thereby driving the soft package battery to move upward to the detection position.

[0018] 3. In the present application, the detection rod contacts the tab at the contact position to generate sparks during differential pressure detection and DCIR detection, therefore, when sparks appear in the soft package battery, the fourth air cylinder lifts the soft package battery, and the second air cylinder pushes the soft package battery into the water tank. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the present application;

[0020] Figure 2 is a structural schematic diagram of the first detection mechanism;

[0021] Figure 3 is a structural schematic diagram of the transmission mechanism;

[0022] Figure 4 is a structural schematic diagram of the second detection mechanism;

[0023] Figure 5 is a structural schematic diagram of the positioning assembly;

[0024] Figure 6 is a partial enlarged view of Figure 4 ;

[0025] Figure 7 is a front view of the rack;

[0026] Labels: 1, rack, 101, first support frame, 102, second support frame, 103, transmission mechanism, 2, first detection mechanism, 201, camera, 202, first mounting plate, 203, mounting frame, 204, first slider, 3, shadow board, 4, soft package battery, 401, bottom plate, 402, cover plate, 403, moving clamp plate, 404, screw, 405, horizontal slide rail, 406, static clamp plate, 407, side plate, 408, vertical slide rail, 409, horizontal slider, 5, differential pressure detection unit, 501, detection rod, 502, first slide plate, 503, first cylinder, 504, second mounting plate, 505, first fixed plate, 6, DCIR detection unit, 601, second fixed plate, 602, connecting plate, 603, spring, 604, second cylinder, 7, water tank, 8, positioning scanner, 9, top plate, 901, roller, 902, fourth cylinder, 10, tilt hole, 1001, wear-resistant wheel, 1002, linkage rod, 1003, locking knob, 11, electrode, 12, detection head, 13, fifth cylinder, 1301, first sleeve, 1302, jacking plate, 14, third cylinder, 1401, second sleeve, 1402, second guide rod, 15, positioning assembly, 1501, first swing wheel, 1502, vertical plate, 1503, second swing wheel, 1504, horizontal plate, 1505, base, 1506, fixed seat, 1507, positioning cylinder. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be further described in detail below in combination with specific embodiments. The parts not described and disclosed in detail in the following embodiments of the present application should be understood as the prior art known or should be known by those skilled in the art, such as the connection mode of the control unit, how the control unit identifies the tab image, the structure of the detector, how the detector detects the internal resistance of the soft package battery and the sheet-shaped battery cell, etc.

[0028] EMBODIMENT

[0029] A soft package battery detection device includes a rack 1, a soft package battery 4 slides along a transmission mechanism 103 arranged on the rack 1. In this embodiment, the transmission mechanism 103 is a speed multiplier line. A first detection mechanism 2 and a second detection mechanism are arranged in sequence along the direction of conveying the soft package battery 4. In this embodiment, a first detection station and a second detection station are arranged along the extension direction of the speed multiplier line, the first detection mechanism 2 is located at the first detection station, and the second detection mechanism is located at the second detection station. The first detection mechanism 2 is used for post-welding detection of the tab of the soft package battery 4, and the second detection mechanism is used for differential pressure detection and DCIR detection of the soft package battery 4. As shown in FIG. 1, the first detection mechanism 2 includes a shadow board 3, a differential pressure detection unit 5, a DCIR detection unit 6, a water tank 7, a positioning scanner 8, a top plate 9, an electrode 11, and a detection head 12. The shadow board 3 is arranged on the first mounting plate 202 of the first detection mechanism 2. The differential pressure detection unit 5 includes a detection rod 501, a first slide plate 502, a first cylinder 503, a second mounting plate 504, and a first fixed plate 505. The DCIR detection unit 6 includes a second fixed plate 601, a connecting plate 602, a spring 603, and a second cylinder 604. Figure 1As shown, the processed soft package battery 4 enters the detection equipment from right to left, and is driven by the speed-up line to pass through the first detection station and the second detection station in sequence, so that the first detection mechanism 2 performs post-welding lug detection, and the second detection mechanism performs differential pressure detection and DCIR detection, thereby improving the consistency and reliability of the soft package battery 4 product.

[0030] In this embodiment, during the processing of the soft package battery 4, a plurality of sheet-shaped battery cells need to be placed in order and reliably clamped by the clamping unit, and then the lug is welded, and at the same time, the lug of the sheet-shaped battery cell is connected to the reflow plate to form two electrodes 11 of the soft package battery 4, i.e. the positive electrode and the negative electrode. The clamping unit includes a bottom plate 401 having a roller 901 at each corner, and the axis of the roller 901 is perpendicular to the bottom plate 401, i.e. the roller 901 rotates along the side wall of the speed-up line. The bottom plate 401 is provided with a static clamp plate 406 and a dynamic clamp plate 403 parallel to the static clamp plate 406, and an elastic clamping area is formed between the static clamp plate 406 and the dynamic clamp plate 403, wherein the static clamp plate 406 is fixed on the bottom plate 401 by bolts; the dynamic clamp plate 403 is connected to the bottom plate 401 in the following manner: two parallel horizontal sliding rails 405 are fixed on the bottom plate 401, the extension direction of the horizontal sliding rail 405 is perpendicular to the dynamic clamp plate 403, and the lower surface of the dynamic clamp plate 403 is fixedly connected with two horizontal sliding blocks 409 corresponding to the horizontal sliding rails 405, and the horizontal sliding blocks 409 can slide along the horizontal sliding rails 405; a lead screw 404 is rotatably arranged on the bottom plate 401, and the two ends of the lead screw 404 are connected to the bottom plate 401 through bearing seats; a connecting block with a threaded hole is fixedly arranged on the dynamic clamp plate 403, the connecting block is connected to the dynamic clamp plate 403 by bolts, the threaded hole is matched with the lead screw 404, the lead screw 404 passes through the threaded hole, and the rotation of the lead screw 404 drives the dynamic clamp plate 403 to reciprocate.

[0031] A bearing plate for bearing the sheet-shaped battery cell is arranged between the static clamp plate 406 and the dynamic clamp plate 403, a plurality of evenly distributed cushion blocks are arranged between the bearing plate and the bottom plate 401, and the connection between the cushion blocks and the bottom plate 401 is by bolts; protective pads are fixedly arranged on the sides of the static clamp plate 406 and the dynamic clamp plate 403 close to the elastic clamping area, and the protective pads are made of elastic rubber material to protect the surface of the sheet-shaped battery cell.

[0032] The static clamp plate 406 is provided with a side plate 407 at both ends, and the side plate 407 is vertically slidably arranged on the bottom plate 401. Specifically, the side plate 407 is connected with the bottom plate 401 through two vertical sliding rails 408 and a sliding groove arranged at the edge of the side plate 407, that is, the connection mode of the two vertical sliding rails 408 and the bottom plate 401 is bolted connection. An inclined hole 10 is arranged on the side plate 407, and a power column is slidably arranged in the inclined hole 10. The power column is rotatably sleeved with a wear-resistant wheel 1001, and the diameter of the wear-resistant wheel 1001 is equal to the width of the inclined hole 10. The power column is fixedly connected with a linkage rod 1002 which is slidably arranged on the bottom plate 401. Specifically, one end of the linkage rod 1002 is fixedly connected with the power column, and the other end of the linkage rod 1002 is provided with a locking knob 1003 which can be fixed. When fixing a plurality of sheet-shaped battery cells, the staff pushes the linkage plate to drive the power column to slide along the inclined hole 10, thereby driving the side plate 407 to vertically move to the required position, and the locking knob 1003 is tightened to fix the side plate 407.

[0033] In the embodiment, the top end of the elastic clamping area is provided with a cover plate 402 which can be fixedly connected with the static clamp plate 406 and the dynamic clamp plate 403.

[0034] The first detection mechanism 2 includes two cameras 201 symmetrically arranged on the rack 1 and used for collecting the tab image of the soft package battery 4, and the collected image is transmitted to the control unit. The control unit identifies the received image, and a collection area is formed between the two cameras 201. As shown in the Figure 2 The first support frame 101 is fixedly connected to the rack 1 and includes two vertical support rods located on both sides of the first detection station and a horizontal support rod, and the ends of the horizontal support rod are connected with the ends of the two vertical support rods by bolts. The first support frame 101 is provided with a first mounting plate 202 for mounting the camera 201, and the first support frame 101 is fixedly connected with a first sliding rail, and the first mounting plate 202 is fixedly provided with a first sliding block 204 which can be fixedly arranged on the first sliding rail and can slide along the first sliding rail. The extension direction of the first sliding rail is parallel to the sliding direction of the soft package battery 4. In the embodiment, the connection mode of the first sliding rail and the first support frame 101 and the connection mode of the first sliding block 204 and the first mounting plate 202 are both bolted connection. The first sliding rail and the first sliding block 204 can adjust the position of the camera 201 to adapt to different soft package batteries 4, thereby improving the application range of the present application.

[0035] Both ends of the first mounting plate 202 are provided with mounting racks 203, which can slide along the direction perpendicular to the soft package battery 4 and can be fixed, and the connection between the mounting rack 203 and the first mounting plate 202 is bolted; the camera 201 is fixedly arranged on the mounting rack 203, and the connection between the camera 201 and the mounting rack 203 is bolted, so as to adapt to soft package batteries 4 of different sizes and improve the application range of the present application.

[0036] In the actual detection process, due to the illumination of the lights in the workshop and the influence of the environment, the image collected by the camera 201 deviates from the actual image, therefore, the side close to the other camera 201 of the camera 201 is provided with a shadowless board 3, the top end of the shadowless board 3 is fixedly connected with the first mounting plate 202, correspondingly, a plurality of fixing holes distributed along the length direction of the first mounting plate 202 are formed on the first mounting plate 202, and the shadowless board 3 is connected with the fixing holes through bolts, so as to realize the function of adjusting the position of the shadowless board according to the position of the shadowless board required by different positions, improve the application range of the present application, and improve the quality of the tab image collected by the camera 201. The shadowless board 3 is provided with a glass area for the camera 201 to collect the tab image, specifically, a square hole is formed on the shadowless board 3, and a glass sheet is fixed in the square hole to form the glass area; the side away from the camera 201 of the shadowless board 3 is provided with a light source distributed around the glass area, so as to improve the quality of the tab image collected by the camera 201.

[0037] In the embodiment, a fifth cylinder 13 for lifting the soft package battery 4 into the collection area is arranged below the collection area, the lower surface of the mounting rail of the multiple-speed line is fixedly connected with a third mounting plate, the connection between the third mounting plate and the rail is bolted, and the fifth cylinder 13 is fixed on the third mounting plate. A first lifting plate 1302 parallel to the third mounting plate is arranged above the third mounting plate, a plurality of first sleeves 1301 are fixedly connected to the third mounting plate, in the embodiment, the number of the first sleeves 1301 is four and they are uniformly distributed on the third mounting plate, a plurality of first guide rods corresponding to the first sleeves 1301 are fixedly arranged on the first lifting plate 1302, the top end of the first guide rod is fixedly connected with the first lifting plate 1302, and the bottom end of the first guide rod penetrates through the first sleeve 1301 and extends into the third mounting plate below. When the bottom plate 401 enters the first detection station, the piston of the fifth cylinder 13 pushes the first lifting plate 1302 to move upward, the first lifting plate 1302 pushes the bottom plate 401 to move upward, so that the soft package battery 4 enters the collection area, the camera 201 collects the images of the tabs on both sides of the soft package battery 4, and transmits the images to the control unit for identification and detection.

[0038] In the embodiment, the end of the first guide rod extending into the third mounting plate below is fixedly connected with a first limiting plate, which limits the limit displacement of the semi-solid battery in the vertical direction.

[0039] As Figure 4 shown in the second detection mechanism includes a detector (not shown), for the soft package battery 4 pressure difference detection pressure difference detection assembly and for the soft package battery 4 DCIR detection DCIR detection assembly, the rack 1 is fixedly connected with the second support frame 102, the pressure difference detection assembly and the DCIR detection assembly are arranged on the second support frame 102. It should be noted that the present application simultaneously carries out DCIR detection and pressure difference detection to the soft package battery 4, and the detector is a commercially available product, which will not be described here.

[0040] The pressure difference detection assembly includes two groups of oppositely arranged pressure difference detection units 5, the pressure difference detection unit 5 includes a plurality of detection rods 501 corresponding to one side of the soft package battery 4, and one end of the detection rod 501 can be in contact with the corresponding lug, and the other end of the detection rod 501 is electrically connected with the detector, when the end of the detection rod 501 is in contact with the corresponding lug, the detector detects the voltage of each sheet-shaped cell. The detection rods 501 of each pressure difference detection unit 5 are divided into two groups, and the detection rods 501 in each group are distributed along the extension direction of the speed line, so that each lug is in contact with the detection rod 501. The pressure difference detection unit 5 further comprises a first sliding plate 502 slidingly arranged on the second support frame 102, and the first sliding plate 502 is driven by a first air cylinder 503, and the detection rods 501 of the pressure difference detection unit 5 are fixedly installed on the first sliding plate 502; The first fixed plate 505 is fixedly connected to the second support frame 102, and the first air cylinder 503 is fixedly installed on the first fixed plate 505, and the first sliding plate 502 is slidingly connected with the first fixed plate 505. Specifically, as shown in the figure, Figure 4 The first fixed plate 505 of the right pressure difference detection unit 5 is fixed at the middle upper position of the second support frame 102, the first air cylinder 503 of the pressure difference detection unit 5 is installed on the first fixed plate 505 through bolts, the first sliding plate 502 is fixedly connected with the piston extension end of the first air cylinder 503, that is, the first sliding plate 502 is a vertical plate, the bottom of the first sliding plate 502 is fixedly connected with a second mounting plate 504, a plurality of connecting rods distributed along the extension direction of the speed line are fixedly connected to the second mounting plate 504, the detection rods 501 are fixed to the connecting rods, and each connecting rod has two detection rods 501. When the right pressure difference detection unit 5 is in contact with the right lug of the soft package battery 4, the first air cylinder 503 drives the first sliding plate 502 to slide towards the soft package battery 4, thereby driving the detection rod 501 to slide towards the soft package battery 4 until the detection rod 501 is in contact with the corresponding lug, and the detector measures the voltage of each sheet-shaped cell; After detection, the first air cylinder 503 drives the first sliding plate 502 to slide away from the soft package battery 4, thereby driving the detection rod 501 to separate from the corresponding lug, and the detected soft package battery 4 enters the next processing procedure.

[0041] As Figure 4As shown, the specific structure of the left differential pressure detection unit 5 is that the first fixed plate 505 of the left differential pressure detection unit 5 is fixed at the top end of the second support frame 102, a sliding seat connected with the first cylinder 503 is slidingly arranged on the first fixed plate 505, the first sliding plate 502 is slidingly connected with the sliding seat and moves up and down by driving the first sliding plate 502 by the sixth cylinder, the bottom of the first sliding plate 502 is fixedly connected with the second mounting plate 504, a plurality of connecting rods distributed along the extension direction of the multiple speed line are fixedly connected on the second mounting plate 504, the detection rods 501 are fixed on the connecting rods, and each connecting rod has two detection rods 501. When the left differential pressure detection unit 5 contacts the left tab of the soft package battery 4, the sixth cylinder drives the first sliding plate 502 to slide downward to the required position, at the same time, the first cylinder 503 drives the sliding seat to slide towards the soft package battery 4, thereby driving the first sliding plate 502 to slide towards the semi-fixed battery, until the detection rods 501 are in contact with the corresponding tabs on the left side of the soft package battery 4. When the two detection rods 501 are in contact with the tabs on both sides of the soft package battery 4, the detection is carried out, and after the detection is completed, the first cylinder 503 drives the sliding seat to slide away from the soft package battery 4, so that the detection rods 501 are separated from the corresponding tabs.

[0042] The DCIR detection assembly includes two groups of DCIR detection units 6 corresponding to the two electrodes 11 (positive and negative) of the soft package battery 4, the DCIR detection unit 6 includes a detection head 12 for connecting with the positive or negative electrode of the soft package battery 4, the two detection heads 12 are electrically connected with the detector, and after the detection head 12 contacts with the corresponding electrode 11, the detector detects the DCIR of the soft package battery 4. The DCIR detection unit 6 further includes a second fixed plate 601 for mounting the detection head 12, the second fixed plate 601 is driven by the second cylinder 604 to move up and down, and when the detection head 12 moves up and down with the second fixed plate 601, the detection head 12 can be connected or separated from the positive or negative electrode of the soft package battery 4, a third fixed plate is fixedly connected below the second fixed plate 601, the detection head 12 is fixed on the third fixed plate, the top end of the detection head 12 is located between the third fixed plate and the second fixed plate 601, and is used for electrically connecting with the transmission line, and the bottom end of the detection head 12 penetrates through the second fixed plate 601 and is located below the second fixed plate 601, and is used for contacting with the electrode 11 of the soft package battery 4.

[0043] In order to avoid that the detection head 12 crushes the semi-fixed battery electrode 11, the upper side of the second fixed plate 601 is provided with a connecting plate 602 fixedly connected with the piston of the second air cylinder 604, and a plurality of springs 603 are arranged between the connecting plate 602 and the second fixed plate 601, one end of the spring 603 is fixedly connected with the connecting plate 602, and the other end of the spring 603 is connected with the second fixed plate 601. Specifically, the two ends of the second fixed plate 601 are fixedly connected with two vertical slide rods, the connecting plate 602 is provided with a sliding hole, the top end of the slide rod extends into the sliding hole and the slide rod can slide along the sliding hole, the spring 603 is sleeved on the part of the slide rod between the second fixed plate 601 and the connecting plate 602, after the soft package battery 4 is located at the detection position, the second air cylinder 604 drives the connecting plate 602 to move downward, thereby driving the second fixed plate 601 and the detection head 12 to move downward; when the bottom end of the detection head 12 contacts the electrode 11 of the soft package battery 4, the second air cylinder 604 continues to move downward, at this time, the spring 603 is compressed, and the restoring force of the spring 603 pushes the detection head 12 to tightly contact the electrode 11 of the soft package battery 4, which improves the detection accuracy, and avoids that the detection head 12 cannot move to the detection position and cannot detect or moves to the position and damages the electrode 11.

[0044] In the embodiment, the first slide plate 502 is fixedly connected with a supporting plate, when the first slide plate 502 moves to the position where the detection rod 501 contacts the corresponding tab, the supporting plate is located below the electrode 11 of the soft package battery 4 and contacts the lower surface of the electrode 11, which plays a role of bearing the electrode 11 and avoids that the electrode 11 is damaged due to excessive pressure of the detection head 12, that is, plays a role of protecting the electrode 11.

[0045] A third cylinder 14 is mounted on a frame 1 between two DCIR detection units 6. A top plate 9 is positioned above the third cylinder 14. In this embodiment, a fourth mounting plate is fixedly connected below the speed-up cable mounting track of the frame 1, and the third cylinder 14 is fixedly mounted on the fourth mounting plate. The top plate 9 is located above the fourth mounting plate and is perpendicular to the piston axis of the third cylinder 14. A second sleeve 1401 is fixedly connected to the fourth mounting plate, and a second guide rod 1402 is slidably disposed inside the second sleeve 1401. The top end of the second guide rod 1402 extends out of the second sleeve 1401 and is fixedly connected to the top plate 9. The third cylinder 14 pushes the top plate 9 upward, thereby causing the soft-pack battery 4 located above it to move upward. In this embodiment, the bottom end of the second guide rod 1402 extends through the second sleeve 1401 and is fixedly connected to a limit plate to limit the extreme displacement of the soft-pack battery 4. After the pouch battery 4 moves to the second inspection station, the third cylinder 14 pushes the top plate 9 to rise, thereby driving the pouch battery 4 to the inspection position. The differential pressure detection component and the DCIR detection component inspect the pouch battery 4. After the inspection is completed, the piston of the third cylinder 14 retracts, and the pouch battery 4 descends to the initial position and is transferred to the next processing station for processing through the transmission mechanism.

[0046] During differential pressure and DCIR testing of the pouch battery 4, sparks are easily generated at the contact point between the detection rod 501 and the tab. Therefore, several fourth cylinders 902 are provided on the top plate 9 to push the pouch battery 4 away from the top plate 9. Several rollers 901 are rotatably arranged on the top plate 9, and the axis of the rollers 901 is parallel to the extension direction of the speed-multiplying line. In this embodiment, there are two fourth cylinders 902. A water tank 7 is provided on one side of the frame 1, and a second cylinder 604 is provided on the other side of the frame 1 to push the pouch battery 4, which has moved away from the top plate 9, into the water tank 7. Figure 4 As shown, when the pouch battery 4 sparks, the second cylinder 604 drives the detection head 12 to move upward, the first cylinder 503 located on the left side of the pouch battery 4 drives the first slide plate 502 away from the pouch battery 4, and at the same time, the sixth cylinder drives the second slide plate to move upward to avoid the pouch battery 4 and allow it to smoothly enter the water tank 7; then, the fourth cylinder 902 lifts the pouch battery 4, and the second cylinder 604 located on the right side of the pouch battery 4 pushes the pouch battery 4 into the water tank 7, which improves the safety of the detection equipment.

[0047] In the application, the positioning scanner 8 is arranged in front of the first detection station, the scanning code is arranged on the bottom plate 401, and the soft package battery 4 on the conveying mechanism 103 is positioned, at the same time, the positioning assembly 15 is arranged on the rack 1 and extends along the direction of the multiple-speed line, the positioning assembly 15 comprises the positioning cylinder 1507 fixedly installed on the rack 1, the fixed seat 1506 fixedly connected below the mounting track of the multiple-speed line, the positioning cylinder 1507 fixedly installed on the fixed seat 1506, the base 1505 fixedly connected to the top end of the piston of the positioning cylinder 1507, the first swing wheel 1501 and the second swing wheel 1503 rotatably arranged on the base 1505, the vertical plate 1502 arranged on the first swing wheel 1501 and fixedly connected with the outer side wall of the first swing wheel 1501, the horizontal plate 1504 arranged on the second swing wheel 1503 and fixedly connected with the outer side wall of the second swing wheel 1503, and the accommodating groove for accommodating the vertical plate 1502 is arranged on the bottom plate 401. When the soft package battery 4 is conveyed, the positioning assembly 15 is located below the bottom plate 401, so that the soft package battery 4 can smoothly pass through, when the positioning scanner scans to the bottom plate 401 entering the first detection station, the conveying mechanism pauses, the base 1505 is pushed upward by the positioning cylinder 1507, the vertical plate 1502 enters the accommodating groove, the horizontal plate 1504 contacts with the lower surface of the bottom plate 401, at this time, the third cylinder 14 and the fifth cylinder 13 lift the corresponding soft package battery 4 to enter the detection position. In the application, when the bottom plate 401 is dislocated due to inertia, the vertical plate 1502 will be deflected into the accommodating groove during the rising of the base 1505, and with the vertical plate 1502 entering the accommodating groove, the first swing wheel 1501 will push the bottom plate 401 to correct the position, thereby ensuring the accuracy of detection.

[0048] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those of ordinary skill in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended 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 testing device for a pouch battery, wherein the pouch battery (4) comprises a plurality of sheet-like cells, characterized in that: The testing equipment includes a transmission mechanism (103) mounted on a rack (1) for transmitting the pouch battery (4). A first testing mechanism (2) and a second testing mechanism are sequentially arranged on the rack (1) along the transmission direction of the pouch battery (4). The first testing mechanism (2) includes two cameras (201) symmetrically mounted on the rack (1) for acquiring images of the tabs of the pouch battery (4) and transmitting the acquired images to the control unit. The second testing mechanism includes a detector, a differential pressure detection component for differential pressure detection of the pouch battery (4), and a DCIR detector for DCIR detection of the pouch battery (4). The detection assembly includes two sets of differential pressure detection units (5) arranged opposite to each other. Each differential pressure detection unit (5) includes multiple detection rods (501) corresponding to the tabs of the sheet-shaped battery cell. One end of each detection rod (501) can contact the corresponding tab, and the other end is electrically connected to the detector. The DCIR detection assembly includes two sets of DCIR detection units (6) corresponding to the two electrodes (11) of the pouch battery (4). Each DCIR detection unit (6) includes a detection head (12) for connecting to the electrode (11) of the pouch battery (4). Both detection heads (12) are electrically connected to the detector. The transmission mechanism (103) is a double-speed line, and a clamping unit for clamping soft-pack batteries is provided on the double-speed line; The clamping unit includes a base plate (401) with rollers (901) at each of the four corners. The axis of the rollers (901) is perpendicular to the base plate (401), that is, the rollers (901) rotate along the side wall of the double speed line. A stationary clamping plate (406) and a movable clamping plate (403) parallel to the stationary clamping plate (406) are provided on the base plate (401). An elastic clamping area is formed between the stationary clamping plate (406) and the movable clamping plate (403). A positioning assembly (15) is provided on the frame (1) along the extension direction of the speed multiplier line. The positioning assembly (15) includes a positioning cylinder (1507) fixedly installed on the frame (1). The piston top of the positioning cylinder (1507) is fixedly connected to a base (1505). A first swing wheel (1501) and a second swing wheel (1503) are rotatably provided on the base (1505). A vertical plate (1502) is provided on the first swing wheel (1501). The vertical plate (1502) is fixedly connected to the outer side wall of the first swing wheel (1501). A horizontal plate (1504) is provided on the second swing wheel (1503). The horizontal plate (1504) is fixedly connected to the outer side wall of the second swing wheel (1503). A receiving groove for accommodating the vertical plate (1502) is provided on the bottom plate (401). A third cylinder (14) is installed on the frame (1) between the two DCIR detection units (6). A top plate (9) is installed above the third cylinder (14). The third cylinder (14) pushes the top plate (9) to move upward, thereby driving the soft-pack battery (4) located above it to move upward. The top plate (9) is provided with several fourth cylinders (902) for pushing the soft-pack battery (4) away from the top plate (9). A water tank (7) is provided on one side of the frame (1), and a second cylinder (604) is provided on the other side of the frame (1) for pushing the soft-pack battery (4) away from the top plate (9) into the water tank (7).

2. The soft-pack battery testing device as described in claim 1, characterized in that: A first support frame (101) is fixedly connected to the frame (1), and a first mounting plate (202) for mounting a camera (201) is provided on the first support frame (101).

3. The soft-pack battery testing device as described in claim 2, characterized in that: The first mounting plate (202) has mounting brackets (203) at both ends. The mounting brackets (203) can slide along the sliding direction perpendicular to the soft-pack battery (4) and can be fixed. The camera (201) is fixedly mounted on the mounting brackets (203).

4. The soft-pack battery testing device as described in claim 1, characterized in that: A second support frame (102) is fixedly connected to the frame (1), and two differential pressure detection units (5) and two DCIR detection units (6) are all set on the second support frame (102).

5. The soft-pack battery testing device as described in claim 4, characterized in that: The differential pressure detection unit (5) also includes a first slide plate (502) that is slidably set on the second support frame (102), and the first slide plate (502) is driven by the first cylinder (503). The detection rods (501) of the differential pressure detection unit (5) are all fixedly installed on the first slide plate (502).

6. The soft-pack battery testing device as described in claim 5, characterized in that: The second support frame (102) is fixedly connected to a first fixing plate (505), the first cylinder (503) is fixedly installed on the first fixing plate (505), and the first sliding plate (502) is slidably connected to the first fixing plate (505).

7. The soft-pack battery testing device as described in claim 4, characterized in that: The DCIR detection unit (6) also includes a second fixing plate (601) for mounting the detection head (12). The second fixing plate (601) is driven by the second cylinder (604) to move up and down. The detection head (12) moves up and down with the second fixing plate (601) and can be connected or disconnected from the electrode (11) of the soft-pack battery (4).

8. The soft-pack battery testing device as described in claim 7, characterized in that: A connecting plate (602) is provided above the second fixing plate (601) and is fixedly connected to the piston of the second cylinder (604). A plurality of springs (603) are provided between the connecting plate (602) and the second fixing plate (601). One end of the spring (603) is fixedly connected to the connecting plate (602), and the other end of the spring (603) is connected to the second fixing plate (601).

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