Pouch battery gas pocket puncturing device

Abstract

The application discloses a soft package battery gas bag puncture device, which comprises a battery grabbing manipulator, a puncture mechanism, a transfer platform and a puncture detection mechanism. The battery grabbing manipulator comprises a connecting seat and a mechanical clamp jaw, and the mechanical clamp jaw is arranged at the bottom of the connecting seat and used for transferring the grabbed soft package battery to the transfer platform. The puncture mechanism is arranged on the battery grabbing manipulator and comprises an executing mechanism and a control mechanism, and is used for forming a negative pressure which can be adsorbed on the surface of the adsorbed soft package battery on the contact surface of a puncture needle assembly and a puncture probe assembly. The transfer platform is arranged below the battery grabbing manipulator and comprises a conveying table and a battery fixing seat, and is used for fixing the soft package battery and transferring the soft package battery. The puncture detection mechanism is used for judging the puncture condition of the gas bag of the soft package battery according to the puncture signal transmitted by the puncture mechanism, and transmitting information to the control mechanism. The application has the beneficial effects that the electrolyte in the bag can be effectively prevented from being sprayed on the formation equipment, the production efficiency is improved, and the production automation is more favorable.

Description

Technical Field

[0001] This invention relates to the field of automated mass production technology for batteries, and in particular to a device for puncturing the air bag of a soft-pack battery. Background Technology

[0002] The pouch battery structure uses an aluminum-plastic film-wrapped core. During the formation process, pouch batteries generate excess gas and electrolyte. Therefore, an air bag is placed at the top of the pouch battery to temporarily store the gas and electrolyte during formation. The air bag is then punctured in a later process to release the gas and electrolyte. Current equipment typically punctures the air bag and releases the gas and electrolyte after formation. However, due to the high pressure inside the air bag, the gas and electrolyte can easily be sprayed onto the equipment, affecting the continuity of the puncture process and thus impacting production efficiency and hindering automation. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a pouch battery gas bag puncture device that ensures real-time emission of excess gas and electrolyte during the pouch battery formation process, prevents electrolyte spraying, and improves production efficiency.

[0004] The present invention provides a device for puncturing the air bag of a soft-pack battery, characterized in that it comprises:

[0005] The battery gripping robot includes a connecting base and a mechanical gripper. The mechanical gripper is located at the bottom of the connecting base and is used to transfer the gripped pouch batteries to the transfer platform.

[0006] A puncture mechanism, mounted on a battery gripping robot, includes an actuator and a control mechanism. The actuator includes a lifting device and an airbag puncture mechanism. The lifting device is mounted on a connecting base. The airbag puncture mechanism includes an electric gripper and a puncture needle assembly and a puncture probe assembly mounted on the electric gripper. The electric gripper is connected to the lifting end of the lifting device. The opposing clamping ends of the electric gripper are respectively equipped with the puncture needle assembly and the puncture probe assembly. The direction of movement of the puncture needle assembly perpendicular to the vertical direction is defined as the horizontal direction, and the direction perpendicular to both the horizontal and vertical directions is defined as... Defined as longitudinal; the needle assembly, puncture probe assembly and puncture detection mechanism are electrically connected to transmit puncture signals to the puncture detection mechanism; the side of the puncture needle assembly facing the puncture probe assembly is provided with a puncture needle, the puncture probe assembly is provided with a double-sided puncture conducting probe, and the puncture needle and the double-sided puncture conducting probe are coaxial in the transverse direction; the puncture control mechanism is set on the connecting seat, and the air intake of the control mechanism is connected to the pipeline of the puncture needle assembly and the puncture probe assembly, which is used to form a negative pressure on the contact surface of the puncture needle assembly and the puncture probe assembly that can be adsorbed onto the surface of the soft-pack battery;

[0007] The transfer platform, located below the battery gripping robot, includes a conveyor and a battery holder. The battery holder is slidably mounted on the conveyor for securing and transferring pouch batteries. The control port of the control mechanism is electrically or signal-connected to the battery gripping robot, the actuator, and the conveyor.

[0008] The device includes a puncture detection mechanism, which is electrically connected to the puncture needle assembly, the puncture probe assembly, and the control mechanism. It is used to determine the puncture status of the soft-pack battery gas bag based on the puncture signal transmitted by the puncture mechanism and to transmit the information to the control mechanism.

[0009] Furthermore, the lifting device includes a lifting mechanism reinforcing rib, a lifting cylinder mounting plate, a lifting cylinder, and a lifting mechanism connecting plate. The lifting mechanism reinforcing rib and the lifting cylinder mounting plate are mounted on the connecting seat and are fixed to each other. The lifting cylinder is vertically mounted on the lifting cylinder mounting plate, and the lifting end of the lifting cylinder is provided with a lifting mechanism connecting plate.

[0010] Furthermore, the air bag puncture mechanism includes an electric gripper, a puncture needle assembly, and a puncture probe assembly. The electric gripper is fixed to the lifting mechanism connecting plate via an electric gripper mounting plate and is always located below the connecting seat. The electric gripper has a pair of clamping ends that move towards or away from each other in the lateral direction. The puncture needle assembly and the puncture probe assembly are connected to the two clamping ends of the electric gripper via corresponding puncture gripper adapter plates.

[0011] Furthermore, the puncture needle assembly includes a first adsorption part, a first puncture cylinder mounting plate, a first puncture cylinder, a puncture needle, and a puncture needle continuity detection screw. The first adsorption part is installed on one of the clamping ends of the electric gripper and is connected to the control mechanism pipeline to form a negative pressure on the surface of the first adsorption part facing the soft-pack battery air bag. The first puncture cylinder is mounted on the first adsorption part through the first puncture cylinder mounting plate, and the telescopic end of the first puncture cylinder extends and retracts laterally. The puncture needle is slidably inserted into the first adsorption part and is connected to the telescopic end of the first puncture cylinder. The puncture needle continuity detection screw is disposed on the first adsorption part, and both the puncture needle continuity detection screw and the puncture needle are electrically connected to the puncture detection mechanism.

[0012] Furthermore, the first suction unit includes a first suction cup protection plate, a first suction cup, a first guide leaf spring, and a first negative pressure connector. The first suction cup protection plate is installed on one of the clamping ends of the electric gripper. The first suction cup protection plate is perpendicular to the horizontal direction, and the side of the first suction cup protection plate facing the soft-pack battery is provided with the first suction cup and the first guide leaf spring. The first suction cup is connected to the control mechanism pipeline through the first negative pressure connector.

[0013] Furthermore, the puncture probe assembly includes a second adsorption part and a double-sided puncture conduction probe. The second adsorption part is installed on another clamping end of the electric gripper. The double-sided puncture conduction probe is disposed on the second adsorption part and aligned with the puncture needle. The double-sided puncture conduction probe is electrically connected to the puncture detection mechanism. When the double-sided puncture conduction probe contacts the puncture needle, the puncture detection mechanism detects a double-sided puncture signal.

[0014] Furthermore, the second adsorption part includes a second suction cup protection plate, a second suction cup, a second guide leaf spring, a second negative pressure connector, and a probe suction cup mounting plate. The second suction cup protection plate is installed on the other clamping end of the electric gripper. The second suction cup protection plate is perpendicular to the horizontal direction, and the second suction cup protection plate has a second suction cup and a second guide leaf spring on the side facing the soft-pack battery. The second suction cup is connected to the control mechanism pipeline through the second negative pressure connector.

[0015] Furthermore, the control mechanism includes a valve island, a pressure monitoring sensor, a filter, a vacuum pressure regulating device, a vacuum generator, and a controller, all mounted on the connecting base, for detecting and regulating the air pressure. The valve island, filter, vacuum generator, vacuum pressure regulating device, pressure monitoring sensor, and controller are all fixed to the robotic arm via mounting plates. The valve island connects to the vacuum generator, the vacuum generator connects to the vacuum pressure regulating device, the vacuum pressure regulating device connects to the pressure monitoring sensor and the filter, and the filter connects to the first suction cup and the second suction cup. The controller is fixed to the connecting base. Based on the air bag puncture requirements, the controller controls the opening and closing of the first and second suction cups to separate the air bags on both sides. By controlling the actions of the first and second puncture cylinders, it achieves single-sided or double-sided puncture of the soft-pack battery air bag.

[0016] Furthermore, the conveying platform includes a base plate, guide rails, a backing plate, and an anti-tilting mechanism. The base plate is provided with guide rails arranged longitudinally. A battery mounting base is slidably provided on the guide rails. Battery guide blocks are provided at both longitudinal ends of the battery mounting base for longitudinal positioning of the pouch battery. The backing plate is vertically arranged on the battery mounting base. The anti-tilting mechanism includes a bidirectional lead screw, a sliding seat, and a battery support plate. The bidirectional lead screw is rotatably arranged on the base plate and parallel to the guide rails. The bidirectional lead screw has two external thread sections with opposite directions of rotation. Each external thread section is equipped with a sliding seat, and the internal thread of the sliding seat engages with the external thread of the corresponding external thread section. The battery support plate is arranged on the sliding seat. The battery support plate and the backing plate are directly opposite each other in the lateral direction, and a battery slot for inserting the pouch battery is provided between the battery support plate and the backing plate to achieve lateral positioning of the pouch battery.

[0017] Furthermore, the transfer platform also includes a single-sided puncture detection mechanism, which is located on the side of the transfer platform and electrically connected to the puncture detection mechanism. It is used to transmit the puncture signal to the puncture detection mechanism while puncturing the soft-pack battery air bag on one side.

[0018] Furthermore, the single-sided puncture detection mechanism includes a fixed plate, a reinforcing rib, a cylinder mounting plate, a second puncture cylinder, a puncture detection insulating plate, a single-sided puncture conduction probe, a probe fixing plate, and a guide plate. The fixed plate is mounted on the base plate; the cylinder mounting plate is fixedly connected to the fixed plate and the reinforcing rib; the second puncture cylinder is disposed on the cylinder mounting plate, with its telescopic end facing the soft-pack battery and extending and retracting laterally; the puncture detection insulating plate is mounted on the telescopic end of the second puncture cylinder; the probe fixing plate is fixed to the puncture insulating plate via the guide plate to ensure that the single-sided puncture conduction probe extends or retracts with the cylinder; the single-sided puncture conduction probe is fixed on the end face facing the probe fixing plate and is used to puncture the soft-pack battery air bag on one side under the drive of the second puncture cylinder.

[0019] The electric gripper has three positions: closed, half-open, and fully open. The closed position allows for double-sided puncture, the half-open position allows for single-sided puncture, and the fully open position allows for the release of the soft-pack battery air bag in the middle.

[0020] The beneficial effects of this invention are: before the soft-pack battery is formed, during the process of moving the battery to the transfer platform, the battery air bag is punctured and inspected, which effectively prevents the electrolyte inside the bag from being sprayed onto the formation equipment, improves production efficiency, and is more conducive to production automation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2a This is a front view of the actuator of the present invention; Figure 2b This is a left view of the actuator of the present invention.

[0023] Figure 3a This is a front view of the piercing needle assembly of the present invention; Figure 3b This is a left view of the puncture needle assembly of the present invention.

[0024] Figure 4a This is a front view of the piercing probe assembly of the present invention; Figure 4b This is a left view of the piercing probe assembly of the present invention.

[0025] Figure 5 This is a schematic diagram of the transfer platform component structure of the present invention.

[0026] Figure 6a This is a front view of the single-sided airbag puncture detection component of the present invention.

[0027] Figure 6b This is a left view of the single-sided airbag puncture detection component of the present invention.

[0028] Figure 7 This is a schematic diagram of the single-sided puncture detection circuit of the present invention.

[0029] Figure Number Explanation: 100, Battery Gripping Robot; 110, Connecting Seat; 120, Mechanical Gripper; 121, Clamping Cylinder; 122, Gripper; 130, Lifting Drive Mechanism; 200, Puncture Detection Mechanism; 201, Single-Sided Puncture Detection Liquid Level Detector; 202, Double-Sided Puncture Detection Liquid Level Detector; 203, Puncture Detection Mechanism Mounting Plate; 300, Puncture Mechanism; 301, Actuating Mechanism; 302, Control Mechanism; 303, Lifting Device 304. Airbag puncture mechanism; 305. First adsorption part; 306. Second adsorption part; 310. Puncture probe assembly; 311. Second suction cup protection plate; 312. Second suction cup; 313. Second guide leaf spring; 314. Second negative pressure connector; 315. Probe suction cup mounting plate; 316. Double-sided puncture conductive probe; 330. Electric gripper; 340. Lifting cylinder mounting plate; 350. Lifting mechanism reinforcing rib; 360. Puncture needle assembly; 361. Needle suction cup mounting plate; 362. Puncture needle continuity detection screw; 363. Puncture needle; 364. First puncture cylinder mounting plate; 365. First puncture cylinder; 366. First suction cup protection plate; 367. First suction cup; 368. First guide leaf spring; 369. First negative pressure connector; 370. Electric gripper mounting plate; 380. Lifting cylinder; 390. Lifting mechanism connecting plate; 400. Valve island; 500. Air pressure monitoring sensor; 600. Filter; 700. Vacuum pressurization device; 800. Vacuum generator; 850. Controller; 900. Transfer platform; 901. Conveyor table; 902. Battery mounting base; 903. Base plate; 904. Guide rail; 905. Anti-tilting mechanism; 906. Two-way lead screw; 907. Sliding seat; 908. Backing plate; 910. Battery guide block; 920. Single-sided puncture detection mechanism; 921. Fixing plate; 922. Cylinder mounting plate; 923. Puncture detection insulating plate; 924. Single-sided puncture conduction probe; 925. Guide plate; 926. Probe fixing plate; 927. Reinforcing rib; 928. Second puncture cylinder; 930. Battery support plate; 940. Soft-pack battery. Detailed Implementation

[0030] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0038] like Figure 1 As shown, the pouch-type battery air bag puncture device of the present invention includes:

[0039] The battery gripping robot 100 includes a connecting base 110 and a mechanical gripper 120. The mechanical gripper 120 is disposed at the bottom of the connecting base 110 and is used to transfer the gripped soft-pack battery 940 to the transfer platform 900.

[0040] A puncture mechanism 300, mounted on a battery gripping robot 100, includes an execution mechanism 301 and a control mechanism 302. The execution mechanism 301 includes a lifting device 303 and an air bag puncture mechanism 304. The lifting device 303 is mounted on a connecting seat 110. The air bag puncture mechanism 304 includes an electric gripper 330 and a puncture needle assembly 360 and a puncture probe assembly 310 mounted on the electric gripper 330. The electric gripper 330 is connected to the lifting end of the lifting device 303. The opposing clamping ends of the electric gripper 330 are respectively equipped with the puncture needle assembly 360 and the puncture probe assembly 310. The direction of movement of the puncture needle assembly 360, which is perpendicular to the vertical direction, is defined as the horizontal direction. The direction of movement of the puncture needle assembly 360, which is perpendicular to both the horizontal and vertical directions, is defined as the direction of movement of the puncture needle assembly 360. The direction is defined as longitudinal; the puncture needle assembly 360 and the puncture probe assembly 310 are electrically connected to the puncture detection mechanism 200 and are used to transmit puncture signals to the puncture detection mechanism 200; a puncture needle 363 is provided on the side of the puncture needle assembly 360 facing the puncture probe assembly 310, and a double-sided puncture conduction probe 316 is provided on the puncture probe assembly 310, and the puncture needle 363 and the double-sided puncture conduction probe 316 are coaxial in the transverse direction; the puncture control mechanism 302 is provided on the connecting seat 110, and the air intake of the control mechanism 302 is connected to the pipeline of the puncture needle assembly 360 and the puncture probe assembly 310, and is used to form a negative pressure on the contact surface of the puncture needle assembly 360 and the puncture probe assembly 310 that can be adsorbed onto the surface of the soft-pack battery 940;

[0041] A transfer platform 900, located below the battery gripping robot 100, includes a conveyor 901 and a battery holder 902. The conveyor 901 connects to the conveyor line of the previous station, and the battery gripping robot transfers the pouch batteries from the previous station's conveyor line to the conveyor 901. The battery holder 902 is slidably mounted on the conveyor 901 for fixing and transferring the pouch batteries. The control port of the control mechanism 302 is electrically or signal-connected to the battery gripping robot 100, the actuator 301, and the conveyor 901, and is used to control the actions of the battery gripping robot 100, the actuator 301, and the conveyor 901.

[0042] A puncture detection mechanism 200 is provided below the battery gripping robot 100. The puncture detection mechanism 200 is electrically connected to the puncture needle assembly 360, the puncture probe assembly 310, and the control mechanism 302. It is used to determine the puncture status of the soft-pack battery air bag based on the puncture signal transmitted by the puncture mechanism 300 and to transmit the information to the control mechanism.

[0043] like Figure 1 As shown, the battery gripping robot 100 also includes a lifting drive mechanism 130. The lifting part of the lifting drive mechanism is connected to the connecting seat 110 and is used to drive the connecting seat 110 to move vertically. The lifting drive mechanism can be a vertically arranged linear guide rail (with its own drive device) or a lifting cylinder, as long as it can realize the vertical lifting of the connecting seat 110.

[0044] like Figure 1 As shown, the connecting seat 110 includes a horizontally arranged rectangular plate 101. The length of the rectangular plate 101 is arranged longitudinally, and the width of the rectangular plate is arranged transversely. The two ends of the bottom of the rectangular plate 101 are symmetrically provided with longitudinal slide rails 102. The longitudinal slide rails 102 are provided with sliders 103. The longitudinal slide rails 102 and the sliders 103 are slidably engaged for installing mechanical grippers 120. The mechanical grippers 120 slide on the corresponding longitudinal slide rails 102, which can transfer the soft-pack battery from the previous workstation conveyor line to the conveyor table 901 of the transfer platform 900, so as to carry out the next operation on the soft-pack battery.

[0045] like Figure 1 As shown, the mechanical gripper 120 includes a clamping cylinder 121 and a pair of grippers 122. The clamping cylinder 121 is installed at the bottom of the slider 103, and the two clamping ends of the clamping cylinder 121 move laterally. The pair of grippers 122 are respectively spaced apart at the two clamping ends of the clamping cylinder 121 for clamping the soft-pack battery and placing the soft-pack battery on the transfer platform 900.

[0046] like Figure 1As shown, the bottom of the rectangular plate 101 can be provided with multiple pairs of mechanical grippers 120 arranged side by side. In this embodiment, the bottom of the rectangular plate 101 is provided with two pairs of mechanical grippers 120, which can operate two pouch batteries at the same time. In use, the paired mechanical grippers 120 clamp the two ends of the pouch battery 940, and then the pouch battery 940 is inserted longitudinally into the corresponding battery slot on the transfer platform 900.

[0047] like Figure 2a , 2b As shown, the lifting device 303 is used to drive the air bag puncture mechanism 304 to move vertically up and down. It includes a lifting mechanism reinforcing rib 350, a lifting cylinder mounting plate 340, a lifting cylinder 380, and a lifting mechanism connecting plate 390. The lifting mechanism reinforcing rib 350 and the lifting cylinder mounting plate 340 are mounted on the connecting seat 110 and are fixed to each other. The lifting cylinder 380 is vertically mounted on the lifting cylinder mounting plate 340, and the lifting end of the lifting cylinder 380 is provided with the lifting mechanism connecting plate 390.

[0048] like Figure 2a , 2b As shown, the air bag puncture mechanism 304 is used to adsorb the soft-pack battery air bag, separate the air bag, and then puncture and detect it. It includes an electric gripper 330, a puncture needle assembly 360, and a puncture probe assembly 310. The electric gripper 330 is fixed to the lifting mechanism connecting plate 390 by an electric gripper mounting plate 370 and is always located below the connecting seat 110. The electric gripper 330 has a pair of clamping ends, which move towards or in opposite directions in the lateral direction. The puncture needle assembly 360 and the puncture probe assembly 310 are connected to the two clamping ends of the electric gripper 330 by corresponding puncture gripper adapter plates 320.

[0049] like Figure 3a , 3bAs shown, the puncture needle assembly 360 includes a first suction part 305, a first puncture cylinder mounting plate 364, a first puncture cylinder 365, a puncture needle 363, and a puncture needle continuity detection screw 362. The first suction part 305 is mounted on one clamping end of the electric gripper 330, and the first suction part 305 is connected to the control mechanism 302 via a pipeline to form a negative pressure on the surface of the first suction part 305 facing the soft-pack battery air bag; the first puncture cylinder 365... The first puncture cylinder 365 is mounted on the first adsorption part 305 via the first puncture cylinder mounting plate 364, and the telescopic end of the first puncture cylinder 365 extends and retracts laterally; the puncture needle 363 is slidably inserted into the first adsorption part 305, and the puncture needle 363 is connected to the telescopic end of the first puncture cylinder 365; the puncture needle continuity detection screw 362 is mounted on the first adsorption part 305, and both the puncture needle continuity detection screw 362 and the puncture needle 363 are electrically connected to the puncture detection mechanism 200.

[0050] like Figure 3a , 3b As shown, the first adsorption part 305 includes a first suction cup protection plate 366, a first suction cup 367, a first guide spring 368, and a first negative pressure connector 369. The first suction cup protection plate 366 is installed on one of the clamping ends of the electric gripper 330. The first suction cup protection plate 366 is perpendicular to the horizontal direction, and the first suction cup protection plate 366 has a first suction cup 367 and a first guide spring 368 on the side facing the soft-pack battery. The first suction cup 367 is connected to the control mechanism 302 through the first negative pressure connector 369.

[0051] like Figure 4a , 4b As shown, the puncture probe assembly 310 includes a second adsorption part 306 and a double-sided puncture conduction probe 316. The second adsorption part 306 is installed on the other clamping end of the electric gripper 330. The double-sided puncture conduction probe 316 is disposed on the second adsorption part 306 and aligned with the puncture needle 363. The double-sided puncture conduction probe 316 is electrically connected to the puncture detection mechanism 200. When the double-sided puncture conduction probe 316 contacts the puncture needle 363, the puncture detection mechanism 200 detects a double-sided puncture signal.

[0052] like Figure 4a , 4bAs shown, the second suction part 306 includes a second suction cup protection plate 311, a second suction cup 312, a second guide spring 313, a second negative pressure connector 314, and a probe suction cup mounting plate 315. The second suction cup protection plate 311 is installed on the other clamping end of the electric gripper 330. The second suction cup protection plate 311 is perpendicular to the horizontal direction, and the second suction cup protection plate 311 has a second suction cup 312 and a second guide spring 313 on the side facing the soft-pack battery. The second suction cup 312 is connected to the control mechanism 302 through the second negative pressure connector 314.

[0053] like Figure 7 As shown, the puncture detection mechanism 200 is a liquid level detector, including a puncture detection mechanism mounting plate 203 and a detection liquid level detector 210 mounted on the puncture detection mechanism mounting plate 203. The detection liquid level detector 210 is divided into a single-sided puncture detection liquid level detector 201 and a double-sided puncture detection liquid level detector 202. The single-sided puncture detection liquid level detector 201, the double-sided puncture detection liquid level detector 202 and the controller 850 of the control mechanism 302 are mounted on the puncture detection mechanism mounting plate 203. The single-sided puncture detection liquid level detector 201 and the double-sided puncture detection liquid level detector 202 are electrically connected to the controller 850. The controller 850 is electrically connected to the control mechanism 302 and is used to determine the puncture status of the soft-pack battery air bag according to the puncture signal transmitted by the puncture mechanism 300, and transmit the information to the control mechanism.

[0054] The electric gripper 330 has three positions: closed, half-open, and fully open. The closed position allows for double-sided puncture, the half-open position allows for single-sided puncture, and the fully open position releases the pouch battery air bag in the middle. The puncture needle assembly 360 and the puncture probe assembly 310 are fixed to the electric gripper 330 and open, half-open, and close with the gripper 330. During the process of the battery gripping robot 100 gripping the pouch battery 940 and transporting it to the transfer platform 900, the actuator 301 extends downwards via the lifting cylinder 380, thereby driving the air bag puncture mechanism 304 downwards to the working position. The electric gripper 330 then closes, and the actuator 301 performs single-sided or double-sided puncture of the pouch battery air bag. When puncturing a soft-pack air bag from one side, the first suction cup 367 and the second suction cup 312 separate the front and rear sides of the soft-pack air bag through the semi-open position of the electric gripper 330. The needle tip of the puncture needle 363 extends towards the soft-pack battery 940 along with the first puncture cylinder 365, puncturing the soft-pack battery air bag from one side. At the same time, the second puncture cylinder 928 of the single-sided air bag puncture detection mechanism 920 extends towards the soft-pack battery 940. Figure 7When the air bag of the pouch battery 940 is punctured on one side, the puncture needle 363 contacts and conducts electricity with the middle conductive layer of the aluminum-plastic film of the air bag, which consists of an outer insulating layer, a middle conductive layer, and an inner insulating layer. At the same time, the one-sided puncture conduction probe 924 contacts and conducts electricity with the middle layer of the side air bag. At this time, the puncture needle 363, the pouch battery 940 air bag, the one-sided puncture conduction probe 924, the one-sided puncture detection liquid level detector 201 of the puncture detection mechanism 200, and the controller 850 form a closed loop. The one-sided puncture of the pouch battery air bag is detected by the signal transmission of the detection mechanism 200. After the detection is completed, the controller 850 controls the first puncture cylinder 365 to retract the puncture needle 363 according to the received information. At the same time, the air bag puncture mechanism 304 releases the pouch battery 940 and detaches it from the pouch battery air bag through the retraction action of the lifting cylinder 380. When the pouch battery air bag is punctured on both sides, the puncturing needle 363 extends with the first puncturing cylinder 365, and the tip of the puncturing needle 363 contacts the double-sided puncture conductive probe 316. The puncture detection mechanism 200 judges the puncture status of the pouch battery air bag based on the puncture signal transmitted by the puncture mechanism 300. After the detection is completed, the controller 850, based on the received information, controls the air bag puncture mechanism 304 to release the pouch battery 940 and retracts it through the lifting cylinder 380 to detach it from the pouch battery air bag. This invention, through the air bag puncture device, can complete the puncture and detection of the air bag during battery handling, improving production efficiency.

[0055] like Figure 1 As shown, the control mechanism 302 includes a valve island 400, a pressure monitoring sensor 500, a filter 600, a vacuum pressure regulating device 700, a vacuum generator 800, and a controller 850, all mounted on the connecting base 110, for detecting and regulating air pressure. The valve island 400, filter 600, vacuum generator 800, vacuum pressure regulating device 700, pressure monitoring sensor 500, and controller 850 are all fixed to the robotic arm via mounting plates. The valve island 400 is connected to the vacuum generator 800, the vacuum generator 800 is connected to the vacuum pressure regulating device 700, the vacuum pressure regulating device 700 is connected to the pressure monitoring sensor 500 and the filter 600, and the filter 600 is connected to the first suction cup 367 and the second suction cup 312. The controller 850 is fixed on the connecting seat 110. According to the air bag puncture requirements, the controller 850 controls the separation of the air bags on both sides by controlling the opening and closing of the first suction cup 367 and the second suction cup 312, and controls the action of the first puncture cylinder 365 and the second puncture cylinder 928 to achieve single-sided or double-sided puncture of the soft-pack battery air bag.

[0056] In this invention, the puncture needle 363, driven by the electric gripper 330, performs single-sided or double-sided detection on the pouch battery air bag. The single-sided air bag puncture detection mechanism 920 and the puncture probe assembly 310 detect single-sided and double-sided punctures on the pouch battery air bag, and then transmit the detected signal to the puncture detection mechanism 200. The puncture status of the pouch battery air bag is determined based on the puncture signal transmitted by the puncture mechanism 300. The puncture detection mechanism 200 communicates with the controller 850 and can control the actions of each moving part.

[0057] Specifically, the control mechanism 302 uses a pressure monitoring sensor 500 to determine whether the first suction cup 367 and the second suction cup 312 have separated the air bags on both sides of the pouch battery 940. It also uses a conductive circuit formed by the puncture detection mechanism 200, the puncture needle 363, and the double-sided puncture detection probe 316 to determine whether the double-sided puncture of the air bag was successful. Finally, it uses a closed circuit formed by the puncture needle 363, the conductive layer in the middle of the pouch battery 940 air bag, the single-sided puncture conductive probe 924, the puncture detection mechanism 200, and the controller 850 to determine whether the single-sided puncture of the air bag was successful.

[0058] like Figure 5 , 6a As shown in Figure 6b, the conveyor table 901 includes a base plate 903, a guide rail 904, a backing plate 908, and an anti-tilting mechanism 905. The base plate 903 is provided with the guide rail 904, which is arranged longitudinally. A battery mounting base 902 is slidably mounted on the guide rail 904. Battery guide blocks 910 are provided at both longitudinal ends of the battery mounting base 902 for longitudinal positioning of the soft-pack battery. The backing plate 908 is vertically mounted on the battery mounting base 902. The anti-tilting mechanism 905 includes a bidirectional lead screw 906, a sliding seat 907, and a battery support plate 930. The lead screw 906 is rotatably mounted on the base plate 903 via a support bearing and is parallel to the guide rail 904. The bidirectional lead screw 906 has two external thread sections with opposite directions of rotation. Each external thread section is equipped with a sliding seat 907, and the internal thread of the sliding seat 907 engages with the external thread of the corresponding external thread section. The battery support plate 930 is mounted on the sliding seat 907. The battery support plate 930 and the backing plate 908 are directly opposite each other in the lateral direction, and a battery slot for inserting a soft-pack battery 940 is provided between the battery support plate 930 and the backing plate 908 to achieve lateral positioning of the soft-pack battery. When the pouch battery 940 is picked up by the robot arm 100 and placed into the conveyor 901 of the transfer platform 900, the two horizontal battery guide blocks 910 restrict the longitudinal movement of the pouch battery 940, and the battery support plate 930 prevents the pouch battery 940 from tilting laterally, thereby ensuring good contact between the single-sided puncture detection mechanism 920 and the side of the pouch battery 940, and ensuring the success rate of conductivity detection.

[0059] In this embodiment, a pair of sliding seats 907 are provided on the bidirectional lead screw 906. When it is necessary to adjust the distance between the sliding seats 907, the distance between the two sliding seats 907 can be adjusted by using the handle 909 at the end of the bidirectional lead screw 906 to accommodate different models of soft-pack batteries 940.

[0060] like Figure 5 , 6a As shown in Figure 6b, the transfer platform 900 also includes a single-sided puncture detection mechanism 920. The single-sided puncture detection mechanism 920 is disposed on the side of the transfer platform 900 and electrically connected to the puncture detection mechanism 200. It is used to transmit the puncture signal to the puncture detection mechanism 200 while puncturing the soft-pack battery air bag on one side.

[0061] like Figure 5 , 6a As shown in Figure 6b, the single-sided puncture detection mechanism 920 includes a fixing plate 921, a reinforcing rib 927, a cylinder mounting plate 922, a second puncture cylinder 928, a puncture detection insulating plate 923, a single-sided puncture conductive probe 924, a probe fixing plate 926, and a guide plate 925. The fixing plate 921 is mounted on the base plate 903; the cylinder mounting plate 922 is fixedly connected to the fixing plate 921 and the reinforcing rib 927; the second puncture cylinder 928 is disposed on the cylinder mounting plate 922, and the second puncture cylinder... The telescopic end of cylinder 928 faces the pouch battery 940 and extends laterally. A puncture detection insulating plate 923 is mounted on the telescopic end of the second puncture cylinder 928. A probe fixing plate 926 is fixed to the puncture insulating plate 923 via a guide plate 925, ensuring that the single-sided puncture conduction probe 924 extends or retracts with the second puncture cylinder 928. The single-sided puncture conduction probe 924 is fixed to the end face of the probe fixing plate 926 facing the pouch battery 940 and is used for extension and retraction driven by the second puncture cylinder 928. During single-sided puncture detection, the single-sided puncture conduction probe 924 extends with the second puncture cylinder 928 and contacts the side of the pouch battery 940. A closed loop is formed between the pouch battery air bag, the single-sided puncture conduction probe 924, and the puncture detection mechanism 200. The puncture detection mechanism 200 detects whether a puncture has occurred. After the test is completed, the single-sided puncture probe 924 is retracted from the pouch battery air bag by the second puncture cylinder 928, thus completing the single-sided puncture test.

[0062] In this invention, when the pouch battery air bag is punctured on both sides, the puncture needle 363 contacts the double-sided puncture conduction probe 316, and the puncture detection mechanism 200 senses the double-sided puncture signal, indicating successful double-sided puncture. The single-sided puncture conduction probe 924 is connected to the puncture detection mechanism 200 via a wire. When the air bag is punctured on one side, the first suction cup 367 and the second suction cup 312 simultaneously adsorb both sides of the pouch battery air bag and open the pouch battery air bag using the electric gripper 330, ensuring that the pouch battery air bag is adsorbed and separated by the first suction cup 367 and the second suction cup 312. At this time, the first puncture cylinder 365 drives the puncture needle 363 to puncture the air bag on one side. Simultaneously, the second puncture cylinder 928 drives the single-sided puncture conduction probe 924 to extend and contact the side of the conductive layer in the middle of the battery air bag. The puncture detection mechanism 200 senses the single-sided puncture signal, indicating successful single-sided puncture. Because the pouch battery air bag is composed of an outer insulating layer, a middle conductive layer, and an inner insulating layer, when punctured, the puncturing needle contacts the middle conductive layer, and the probe contacts the side middle conductive layer, forming a circuit. This invention provides a pouch battery air bag puncture device that punctures the pouch battery air bag during the process of a robotic arm grasping and handling the battery. It can achieve both single-sided and double-sided air bag puncture, and the probe is used to detect whether the air bag puncture was successful.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for puncturing the air bag of a soft-pack battery, characterized in that, include: The battery gripping robot (100) includes a connecting base (110) and a mechanical gripper (120). The mechanical gripper (120) is located at the bottom of the connecting base (110) and is used to transfer the gripped pouch battery (940) to the transfer platform (900). A puncture mechanism (300), mounted on a battery gripping robot (100), includes an actuator (301) and a control mechanism (302). The actuator (301) includes a lifting device (303) and an air bag puncture mechanism (304). The lifting device (303) is mounted on a connecting seat (110). The air bag puncture mechanism (304) includes an electric gripper (330) and a puncture needle assembly (360) and a puncture probe assembly (310) mounted on the electric gripper (330). The claw (330) is connected to the lifting end of the lifting device (303). The clamping ends of the electric gripper (330) are respectively equipped with a puncture needle assembly (360) and a puncture probe assembly (310). The direction of movement of the puncture needle assembly (360) perpendicular to the vertical direction is defined as the transverse direction, and the direction that is perpendicular to both the transverse and vertical directions is defined as the longitudinal direction. The puncture needle assembly (360) and the puncture probe assembly (310) are electrically connected to the puncture detection mechanism (200) for use in puncturing the puncture detection mechanism (200). The puncture needle assembly (360) is provided with a puncture needle (363) on the side facing the puncture probe assembly (310), and a double-sided puncture conduction probe (316) is provided on the puncture probe assembly (310), and the puncture needle (363) and the double-sided puncture conduction probe (316) are coaxial in the transverse direction; the puncture control mechanism (302) is provided on the connecting seat (110), and the air intake of the control mechanism (302) is connected to the pipeline of the puncture needle assembly (360) and the puncture probe assembly (310). The negative pressure is used to form a surface adsorbed onto the soft-pack battery (940) at the contact surfaces of the puncture needle assembly (360) and the puncture probe assembly (310); the puncture needle assembly (360) includes a first adsorption part (305), a first puncture cylinder mounting plate (364), a first puncture cylinder (365), a puncture needle (363), and a puncture needle continuity detection screw (362); the puncture probe assembly (310) includes a second adsorption part (306) and a double-sided puncture continuity probe (316). The transfer platform (900) is located below the battery gripping robot (100) and includes a conveyor (901) and a battery holder (902). The battery holder (902) is slidably mounted on the conveyor (901) and is used to fix the pouch battery and transfer the pouch battery. The control port of the control mechanism (302) is electrically or signal connected to the battery gripping robot (100), the actuator (301) and the conveyor (901). The puncture detection mechanism (200) is electrically connected to the puncture needle assembly (360), the puncture probe assembly (310), and the control mechanism. It is used to determine the puncture status of the soft-pack battery gas bag based on the puncture signal transmitted by the puncture mechanism (300) and to transmit the information to the control mechanism.

2. The device for puncturing the air bag of a soft-pack battery as described in claim 1, characterized in that: The lifting device (303) includes a lifting mechanism reinforcing rib (350), a lifting cylinder mounting plate (340), a lifting cylinder (380), and a lifting mechanism connecting plate (390). The lifting mechanism reinforcing rib (350) and the lifting cylinder mounting plate (340) are mounted on the connecting seat (110), and the lifting mechanism reinforcing rib (350) and the lifting cylinder mounting plate (340) are fixed to each other. The lifting cylinder (380) is vertically mounted on the lifting cylinder mounting plate (340), and the lifting end of the lifting cylinder (380) is provided with a lifting mechanism connecting plate (390).

3. The device for puncturing the air bag of a soft-pack battery as described in claim 2, characterized in that: The air bag puncture mechanism (304) includes an electric gripper (330), a puncture needle assembly (360), and a puncture probe assembly (310). The electric gripper (330) is fixed on the lifting mechanism connecting plate (390) by an electric gripper mounting plate (370) and is always located below the connecting seat (110). The electric gripper (330) has a pair of clamping ends that move towards or away from each other in the lateral direction. The puncture needle assembly (360) and the puncture probe assembly (310) are connected to the two clamping ends of the electric gripper (330) by corresponding puncture gripper adapter plates (320).

4. The device for puncturing the air bag of a soft-pack battery as described in claim 2, characterized in that: The first adsorption part (305) is installed on one of the clamping ends of the electric gripper (330), and the first adsorption part (305) is connected to the control mechanism (302) via a pipeline to form a negative pressure on the surface of the first adsorption part (305) facing the soft-pack battery gas bag; the first puncture cylinder (365) is set on the first adsorption part (305) through the first puncture cylinder mounting plate (364), and the telescopic end of the first puncture cylinder (365) extends and retracts laterally; the puncture needle (363) is slidably inserted in the first adsorption part (305), and the puncture needle (363) is connected to the telescopic end of the first puncture cylinder (365); the puncture needle continuity detection screw (362) is set on the first adsorption part (305), and both the puncture needle continuity detection screw (362) and the puncture needle (363) are electrically connected to the puncture detection mechanism (200).

5. The soft-pack battery air bag puncture device as described in claim 4, characterized in that: The first suction unit (305) includes a needle suction cup mounting plate (361), a first suction cup protection plate (366), a first suction cup (367), a first guide leaf spring (368), and a first negative pressure connector (369). The needle suction cup mounting plate (361) is mounted on one of the clamping ends of the electric gripper (330). The suction cup mounting plate (361) is perpendicular to the horizontal direction, and the side of the suction cup mounting plate (361) facing the soft-pack battery is provided with the first suction cup (367) and the first guide leaf spring (368). The first suction cup (367) is connected to the control mechanism (302) through the first negative pressure connector (369). The first suction cup protection plate (366) is provided on the side of the needle suction cup mounting plate (361) facing the soft-pack battery to protect the first suction cup (367).

6. The device for puncturing the air bag of a soft-pack battery as described in claim 2, characterized in that: The second adsorption part (306) is installed on the other clamping end of the electric gripper (330); the double-sided puncture conduction probe (316) is disposed on the second adsorption part (306) and aligned with the puncture needle (363) front and back; the double-sided puncture conduction probe (316) is electrically connected to the puncture detection mechanism (200); and when the double-sided puncture conduction probe (316) contacts the puncture needle (363), the puncture detection mechanism (200) detects the double-sided puncture signal.

7. The soft-pack battery air bag puncture device as described in claim 6, characterized in that: The second suction unit (306) includes a second suction cup protection plate (311), a second suction cup (312), a second guide leaf spring (313), a second negative pressure connector (314), and a probe suction cup mounting plate (315). The probe suction cup mounting plate (315) is mounted on the other clamping end of the electric gripper (330). The probe suction cup mounting plate (315) is perpendicular to the horizontal direction, and the side of the probe suction cup mounting plate (315) facing the soft-pack battery is provided with the second suction cup (312) and the second guide leaf spring (313). The second suction cup (312) is connected to the control mechanism (302) through the second negative pressure connector (314). The second suction cup protection plate (311) is provided on the side of the probe suction cup mounting plate (315) facing the soft-pack battery to protect the second suction cup (312).

8. The device for puncturing the air bag of a soft-pack battery as described in claim 1, characterized in that: The conveying platform (901) includes a base plate (903), a guide rail (904), a backing plate (908), and an anti-tilting mechanism (905). The base plate (903) is provided with the guide rail (904), which is arranged longitudinally. A battery fixing seat (902) is slidably provided on the guide rail (904). Battery guide blocks (910) are provided at both longitudinal ends of the battery fixing seat (902) for longitudinal positioning of the soft-pack battery. The backing plate (908) is vertically arranged on the battery fixing seat (902). The anti-tilting mechanism (905) includes a two-way lead screw (906), a sliding seat (907), and a battery support plate (930). The bidirectional lead screw (906) is rotatably mounted on the base plate (903) and parallel to the guide rail (904); the bidirectional lead screw (906) has two external thread sections with opposite directions of rotation, each external thread section is equipped with a sliding seat (907), the internal thread of the sliding seat (907) is engaged with the external thread of the corresponding external thread section; the battery support plate (930) is mounted on the sliding seat (907), the battery support plate (930) and the backing plate (908) are directly opposite each other in the lateral direction, and a battery slot for inserting a soft-pack battery (940) is left between the battery support plate (930) and the backing plate (908) to achieve lateral positioning of the soft-pack battery.

9. A puncture device for a soft-pack battery air bag as described in any one of claims 1 to 8, characterized in that: The transfer platform (900) also includes a single-sided puncture detection mechanism (920), which is located on the side of the transfer platform (900) and electrically connected to the puncture detection mechanism (200). It is used to puncture the soft-pack battery air bag on one side and transmit the puncture signal to the puncture detection mechanism (200).

10. The soft-pack battery air bag puncture device as described in claim 9, characterized in that: The single-sided puncture detection mechanism (920) includes a fixing plate (921), a reinforcing rib (927), a cylinder mounting plate (922), a second puncture cylinder (928), a puncture detection insulating plate (923), a single-sided puncture conductive probe (924), a probe fixing plate (926), and a guide plate (925). The fixing plate (921) is mounted on the base plate (903); the cylinder mounting plate (922) is fixedly connected to the fixing plate (921) and the reinforcing rib (927); the second puncture cylinder (928) is disposed on the cylinder mounting plate (922), and the second puncture cylinder (928) is mounted on the cylinder mounting plate (922). 8) The telescopic end faces the soft-pack battery (940) and telescopically extends and retracts; the puncture detection insulation plate (923) is installed on the telescopic end of the second puncture cylinder (928); the probe fixing plate (926) is fixed on the puncture insulation plate (923) through the guide plate (925) to ensure that the single-sided puncture conduction probe (924) extends or retracts with the second puncture cylinder (928); the single-sided puncture conduction probe (924) is fixed on the end face of the probe fixing plate (926) facing the soft-pack battery (940) and is used to puncture the soft-pack battery air bag on one side under the drive of the second puncture cylinder (928).

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