Device for measuring weight of pole piece

Abstract

The utility model relates to a device for measuring the weight of a pole piece. The device comprises a lifting transportation mechanism, a lifting platform, a weighing sensor, a jacking mechanism and a material taking mechanism, the lifting transportation mechanism is connected with the lifting platform and drives the lifting platform to do lifting motion, the lifting platform is used for bearing a supplied material box, and the supplied material box is used for containing a plurality of pole pieces; the jacking mechanism is arranged on the lifting platform, the weighing sensor is arranged at the ejection end of the jacking mechanism, the ejection end of the jacking mechanism is ejected from the bottom of the incoming material box to jack a plurality of pole pieces, and the material taking mechanism is located above the incoming material box to take out the pole pieces one by one; the weight of the taken-out pole piece can be accurately obtained, the device is suitable for production and processing of laminated battery cells, the measurement accuracy is high, and the measurement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery laminations, and more particularly to a device for measuring the weight of pole pieces. Background Art

[0002] Square stacked lithium-ion batteries are widely used. When the stacking machine is producing stacking, it is necessary to take out the electrodes from the incoming material one by one to produce battery cells. Since the weight of each electrode is not completely consistent, it is easy to cause the weight of the stacked battery cells to be inconsistent, which leads to inconsistent capacity of each battery cell. The battery cell capacity is an important indicator of battery cell performance. However, the battery cell weighing scheme used in the prior art generally weighs the entire battery cell after the stacking is completed to obtain the weight of the entire battery cell. This method is more difficult to ensure the consistency of the capacity of each battery cell, and it is easy to cause the problem of unbalanced charging and discharging of each battery cell, affecting its performance. Therefore, before the stacking machine is produced, the system must accurately know the weight of each electrode to be stacked in order to accurately grasp the capacity of the battery cell after the stacking is completed. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a device for measuring the weight of a pole piece in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a device for measuring the weight of pole pieces, the device comprising a lifting and transporting mechanism, a lifting platform, a weighing sensor, a lifting mechanism and a material taking mechanism; the lifting and transporting mechanism is connected to the lifting platform and drives the lifting platform to perform lifting movements, the lifting platform is used to support an incoming material box, and the incoming material box is used to accommodate multiple pole pieces; the lifting mechanism is arranged on the lifting platform, the weighing sensor is arranged at the ejection end of the lifting mechanism, the ejection end of the lifting mechanism is ejected from the bottom of the incoming material box to lift multiple pole pieces, and the material taking mechanism is located above the incoming material box to take out the pole pieces one by one.

[0005] In some embodiments, the lifting platform is also provided with an incoming material box conveying mechanism, and the incoming material box conveying mechanism is used to move the incoming material box to the lifting position; the bottom of the incoming material box has an avoidance groove, and when the incoming material box is in the lifting position, the avoidance groove corresponds to the ejection end of the lifting mechanism for the ejection end of the lifting mechanism to be ejected.

[0006] In some embodiments, the incoming material box includes a bottom plate, the upper surface of the bottom plate is provided with a fence, and outer edges are formed between the four edges of the bottom plate and the fence; the avoidance groove is opened on the bottom plate and is located in the enclosed space of the fence.

[0007] In some embodiments, the incoming material box conveying mechanism includes two groups of conveyor belt assemblies, which are arranged in parallel, and the conveying directions of the two groups of conveyor belt assemblies are consistent and the conveying actions are synchronized; the ejection end of the lifting mechanism is located between the two groups of conveyor belt assemblies.

[0008] In some embodiments, a first enclosure is provided at the edge of the lifting platform that is perpendicular to the conveying direction of the two groups of conveyor belt assemblies, and a second enclosure is provided at the two opposite edges of the lifting platform adjacent to the first enclosure; a receiving cavity is formed between the first enclosure and the two second enclosures, and the two groups of conveyor belt assemblies are located in the receiving cavity.

[0009] In some embodiments, a vertical plate is provided on the upper surface of each of the two second enclosures, and the two vertical plates are parallel to each other; a horizontal plate is provided on the opposite side surfaces of the two vertical plates, and the two horizontal plates are correspondingly located above the two groups of conveyor belt assemblies; a gap is formed between the horizontal plate and the conveyor belt assembly on the same side for the outer edge of the incoming material box to be inserted.

[0010] In some embodiments, a positioning plate is provided in the middle of the upper surface of the first enclosure, and when the incoming material box is in the top lifting position, the bottom plate is against the positioning plate; the first enclosure is also provided with an avoidance recess on both sides of the positioning plate, and the two avoidance recesses respectively correspond to the feeding ends of the two groups of conveyor belt assemblies.

[0011] In some embodiments, the material picking mechanism includes a translation drive assembly, the translation drive assembly is connected to a robot, and the translation drive assembly drives the robot to move horizontally back and forth above the incoming material box.

[0012] In some embodiments, the device also includes a support seat and an NG material box. The upper surface of the support seat is provided with a slide rail and an electric telescopic rod. A support block is slidably provided on the slide rail, and the telescopic end of the electric telescopic rod is connected to the support block; the NG material box is provided on the support block.

[0013] In some embodiments, the translation drive assembly is further connected to a material pressing assembly, which drives the material pressing assembly to move horizontally back and forth above the NG material box, and the material pressing assembly is used to press down the NG pole piece in the NG material box.

[0014] The beneficial effect of the present invention is that, different from the prior art, the device for measuring the weight of the pole pieces of the present invention controls the lifting and lowering of the lifting platform through the lifting and transporting mechanism, thereby controlling the incoming material box to move to the material taking position for the material taking mechanism to take the material through the lifting platform, and the weighing sensor is arranged at the ejection end of the jacking mechanism, and the ejection end of the jacking mechanism is ejected from the bottom of the incoming material box to lift multiple pole pieces, which helps to measure the total weight of the pole pieces in the incoming material box through the jacking action of the jacking mechanism and the weighing sensor, so that the weight of the pole pieces taken out can be accurately obtained, which is suitable for the production and processing of laminated battery cells, has high measurement accuracy, and improved measurement efficiency, and effectively guarantees the capacity of each battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front side schematic diagram of a device for measuring pole piece weight in an embodiment of the present utility model;

[0016] Figure 2 This is another front side schematic diagram of the device for measuring the weight of a pole piece according to an embodiment of the present invention;

[0017] Figure 3 1 is a schematic top and side view of a device for measuring pole piece weight according to an embodiment of the present invention;

[0018] Figure 4 It is a schematic diagram of the enlarged structure of a part A in an embodiment of the present utility model;

[0019] Figure 5 Schematic diagram of the support base and NG material box in the embodiment of the present utility model;

[0020] Figure 6 It is a schematic diagram of the incoming material box in the embodiment of the present utility model;

[0021] Names and serial numbers in the figure: lifting and transporting mechanism-1; lifting platform-2; weighing sensor-3; lifting mechanism-4; incoming material box-6; avoidance groove-610; bottom plate-61; fence-62; conveyor belt assembly-71; driving wheel-711; driven wheel-712; conveyor belt-713; transmission rod-72; first enclosure-21; second enclosure-22; vertical plate-23; horizontal plate-24; positioning plate-25; avoidance recess-210; translation drive assembly-51; manipulator-52; support seat-8; NG material box-9; slide rail-81; support block-810; electric telescopic rod-82; pressing assembly-53; slide rail frame-511; slider-512. DETAILED DESCRIPTION

[0022] The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0023] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] "Multiple" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0025] Moreover, the terms "up, down, front, back, left, right, upper end, lower end" and the like indicating directions are all based on the posture and position of the device or apparatus described in this solution during normal use.

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The present utility model is implemented as follows Figures 1 to 6As shown in the figure, a device for measuring the weight of a pole piece includes a lifting and transporting mechanism 1, a lifting platform 2, a weighing sensor 3, a jacking mechanism 4 and a material-retrieving mechanism; the lifting and transporting mechanism 1 is connected to the lifting platform 2 and drives the lifting platform 2 to perform lifting and lowering movements, the lifting platform 2 is used to support an incoming material box 6, and the incoming material box 6 is used to accommodate multiple pole pieces; the jacking mechanism 4 is arranged on the lifting platform 2, the weighing sensor 3 is arranged at the ejection end of the jacking mechanism 4, the ejection end of the jacking mechanism 4 is ejected from the bottom of the incoming material box 6 to jack up multiple pole pieces, and the material-retrieving mechanism is located above the incoming material box 6 to take out the pole pieces one by one.

[0028] The device for measuring the weight of the electrode pieces of the embodiment of the present utility model can lift up the multiple electrode pieces in the material box 6 by the lifting mechanism 4, so as to facilitate the material taking mechanism to take out the electrode pieces. Before the multiple electrode pieces are lifted and the material taking mechanism takes out the material, the total weight of the multiple electrode pieces can be measured by the weighing sensor 3. When the material taking mechanism takes out a electrode piece, the weighing sensor 3 can measure the total weight of the remaining electrode pieces. By obtaining the difference between the total weights before and after, the weight of the electrode piece taken out can be known, which helps to accurately grasp the weight of each electrode piece before the stacking operation. The electrode pieces that meet the requirements enter the stacking process, and the electrode pieces that do not meet the requirements are NG electrode pieces, and the NG electrode pieces are sent to the NG material box 9. The device for measuring the weight of the electrode pieces of the embodiment of the utility model is suitable for the production and processing of laminated battery cells, with high measurement accuracy and improved measurement efficiency.

[0029] In this embodiment, the lifting platform 2 is further provided with an incoming material box conveying mechanism, which is used to transfer the incoming material box 6 to the jacking position, which is the position where the ejection end of the jacking mechanism 4 performs the ejection action. The bottom of the incoming material box 6 has an avoidance groove 610. When the incoming material box 6 is in the jacking position, the avoidance groove 610 corresponds to the ejection end of the jacking mechanism 4 to allow the ejection end of the jacking mechanism 4 to eject. Specifically, the incoming material box 6 includes a bottom plate 61, the upper surface of which is provided with a fence 62, and outer edges are formed between the four edges of the bottom plate 61 and the fence 62. The avoidance groove 610 is hollowed out. It is located in the center of the base plate 61 and is within the enclosed space of the fence 62. A support platform is formed between the portion of the base plate 61 within the fence 62 and the avoidance groove 610. When placing the pole piece, the pole piece is simply placed on the support platform. The middle portion of the pole piece can cover the avoidance groove 610, and the pole piece as a whole is still supported by the support platform. When performing the jacking operation, it is convenient for the ejection end of the jacking mechanism 4 to stably lift multiple pole pieces from the avoidance groove 610. The jacking mechanism 4 uses a jacking cylinder.

[0030] Furthermore, the incoming material box conveying mechanism includes two sets of conveyor belt assemblies 71, which are arranged in parallel. The conveying directions of the two sets of conveyor belt assemblies 71 are consistent and the conveying actions are synchronized. The ejection end of the lifting mechanism 4 is located between the two sets of conveyor belt assemblies 71. Specifically, each set of conveyor belt assemblies consists of a driving wheel 711, a driven wheel 712 and a conveyor belt 713. In order to achieve synchronous transmission of the two conveyor belts 713, a transmission rod 72 is connected between the two driving wheels 711. The transmission rod 72 is provided with a driving gear. The driving gear is connected to a motor (not shown in the drawings). The transmission rod 72 can be driven by the motor (not shown in the drawings) to control the movement of the transmission rod 72, and then the two driving wheels 711 are driven by the transmission rod 72 to move, thereby achieving transmission control of the two conveyor belts 713. It should be noted that the conveyor belt assembly and the technology for driving the conveyor belt assembly are relatively existing. In actual application, reference can be made to the existing technology and is not specifically limited in this embodiment.

[0031] In this embodiment, a first panel 21 is provided on one edge of the lifting platform 2 perpendicular to the conveying direction of the two conveyor belt assemblies 71. Second panels 22 are also provided on two opposing edges of the lifting platform 2 adjacent to the first panel 21. A receiving cavity is formed between the first panel 21 and the two second panels 22, and both conveyor belt assemblies 71 are located within the receiving cavity. Specifically, a vertical panel 23 is provided on the upper surface of each of the two second panels 22, and the two vertical panels 23 are parallel to each other. A horizontal panel 24 is provided on the opposite side of each vertical panel 23, and the two horizontal panels 24 are positioned above the two conveyor belt assemblies 71, with the horizontal panels 24 and vertical panels 23 on the same side forming an integrated connection. A gap is formed between the horizontal panels 24 and the conveyor belt assemblies 71 on the same side to accommodate the outer edge of the incoming material box 6. This serves to limit the incoming material box 6, allowing it to move along the predetermined conveying direction and prevent it from shifting during transport.

[0032] Furthermore, a positioning plate 25 is provided in the middle of the upper surface of the first enclosure 21. When the incoming material box 6 is in the raised position, the bottom plate 61 abuts against the positioning plate 25, preventing the incoming material box 6 from moving out. The first enclosure 21 also has a clearance notch 210 on either side of the positioning plate 25. The two clearance notches 210 correspond to the feed ends of the two conveyor belt assemblies 71, respectively, to prevent obstruction to the operation of the conveyor belt assemblies.

[0033] In this embodiment, the material taking mechanism includes a translation drive assembly 51, which is connected to a manipulator 52. The translation drive assembly 51 drives the manipulator 52 to move horizontally back and forth above the incoming material box 6. The manipulator 52 has a suction nozzle for sucking the electrode.

[0034] Furthermore, the device also includes a support base 8 and an NG material box 9. The upper surface of the support base 8 is provided with a slide rail 81 and an electric telescopic rod 82. A support block 810 is slidably provided on the slide rail 81. The telescopic end of the electric telescopic rod 82 is connected to the support block 810. The NG material box 9 is provided on the support block 810. When the system measures the weight of the removed electrode and it does not meet the requirements, the corresponding electrode is determined to be an NG electrode and continues to be sent to the NG material box 9 by the manipulator 52. If the weight of the electrode meets the requirements, the manipulator 52 continues to send the electrode to the lamination station (not shown in the drawings).

[0035] Specifically, the translation drive assembly 51 is also connected to a material pressing assembly 53. The translation drive assembly 51 drives the material pressing assembly 53 to move horizontally back and forth above the NG material box 9. The material pressing assembly 53 is used to press down the NG pole piece in the NG material box 9. After the NG material box 9 receives the material, the electric telescopic rod 82 is used to control the NG material box 9 to move on the slide rail 81 so that it moves to the bottom of the material pressing assembly 53. Among them, the translation drive assembly 51 includes a slide rail frame 511, and a plurality of sliders 512 are slidably provided on the slide rail frame 511. The plurality of sliders 512 are respectively driven by corresponding driving mechanisms to slide on the slide rail frame 511, and the driving mechanisms are such as motors. Then the manipulator 52 and the material pressing assembly 53 are respectively slidably provided on the slide rail frame 511 through the corresponding sliders 512, so that the material pressing assembly 53 and the manipulator 52 are spaced apart.

[0036] In this embodiment, the manipulator 52 is also connected to the driving end of a lifting cylinder, and the fixed end of the lifting cylinder is arranged on the corresponding slider 512, so that the manipulator 52 can perform lifting and lowering movements relative to the incoming material box 6.

[0037] In this embodiment, the pressing assembly 53 includes a support plate provided on the corresponding slider 512, and another lifting cylinder is provided on one side surface of the support plate, and a pressing plate is connected to the driving end of the lifting cylinder.

[0038] In this embodiment, the lifting and transporting mechanism 1 may also adopt a lifting cylinder, and the lifting platform is arranged at the driving end of the lifting cylinder.

[0039] It should be noted that the lifting and transporting mechanism 1, the support seat 8 and the slide rail frame 511 can be installed on corresponding platforms with height differences according to actual application needs. The drawings are only for illustrating the layout of the main mechanisms and do not constitute a specific limitation. The actual application should prevail.

[0040] It should be understood that ordinary technical workers in this field can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A device for measuring pole piece weight, characterized in that: The device includes a lifting and transporting mechanism, a lifting platform, a weighing sensor, a lifting mechanism and a material-retrieving mechanism; the lifting and transporting mechanism is connected to the lifting platform and drives the lifting platform to perform lifting movements, the lifting platform is used to support an incoming material box, and the incoming material box is used to accommodate multiple pole pieces; the lifting mechanism is arranged on the lifting platform, the weighing sensor is arranged at the ejection end of the lifting mechanism, the ejection end of the lifting mechanism is ejected from the bottom of the incoming material box to lift multiple pole pieces, and the material-retrieving mechanism is located above the incoming material box to take out the pole pieces one by one.

2. The device for measuring pole piece weight according to claim 1, characterized in that: The lifting platform is also provided with an incoming material box conveying mechanism, which is used to move the incoming material box to the jacking position; the bottom of the incoming material box is provided with an avoidance groove, and when the incoming material box is in the jacking position, the avoidance groove corresponds to the ejection end of the jacking mechanism to allow the ejection end of the jacking mechanism to be ejected.

3. The device for measuring pole piece weight according to claim 2, characterized in that: The incoming material box includes a bottom plate, the upper surface of the bottom plate is provided with a fence, and outer edges are formed between the four edges of the bottom plate and the fence; the avoidance groove is opened on the bottom plate and is located in the enclosed space of the fence.

4. The device for measuring pole piece weight according to claim 3, characterized in that: The incoming material box conveying mechanism includes two sets of conveyor belt assemblies, which are arranged in parallel. The conveying directions of the two sets of conveyor belt assemblies are consistent and the conveying actions are synchronized; the ejection end of the lifting mechanism is located between the two sets of conveyor belt assemblies.

5. The device for measuring pole piece weight according to claim 4, characterized in that: A first enclosure is provided at the edge of the lifting platform on one side perpendicular to the conveying direction of the two groups of conveyor belt assemblies, and a second enclosure is provided at the two opposite edges of the lifting platform adjacent to the first enclosure; a receiving cavity is formed between the first enclosure and the two second enclosures, and the two groups of conveyor belt assemblies are both located in the receiving cavity.

6. The device for measuring pole piece weight according to claim 5, characterized in that: A vertical plate is provided on the upper surface of each of the two second enclosures, and the two vertical plates are parallel to each other; a horizontal plate is provided on the opposite side surface of each of the two vertical plates, and the two horizontal plates are correspondingly located above the two groups of conveyor belt assemblies; a gap is formed between the horizontal plate and the conveyor belt assembly on the same side for the outer edge of the incoming material box to be inserted.

7. The device for measuring pole piece weight according to claim 5 or 6, characterized in that: A positioning plate is provided in the middle of the upper surface of the first enclosure. When the incoming material box is in the top lifting position, the bottom plate is against the positioning plate. An avoidance recess is also provided on both sides of the positioning plate on the first enclosure. The two avoidance recesses respectively correspond to the feeding ends of the two groups of conveyor belt assemblies.

8. The device for measuring pole piece weight according to claim 1, characterized in that: The material picking mechanism includes a translation drive component, the translation drive component is connected to a manipulator, and the translation drive component drives the manipulator to move horizontally back and forth above the incoming material box.

9. The device for measuring pole piece weight according to claim 8, characterized in that: The device also includes a support base and an NG material box. The upper surface of the support base is provided with a slide rail and an electric telescopic rod. A support block is slidably provided on the slide rail. The telescopic end of the electric telescopic rod is connected to the support block. The NG material box is provided on the support block.

10. The device for measuring pole piece weight according to claim 9, characterized in that: The translation drive assembly is also connected to a material pressing assembly, which drives the material pressing assembly to move horizontally back and forth above the NG material box. The material pressing assembly is used to press down the NG pole piece in the NG material box.

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