Lithium-manganese compound machine

Abstract

The invention relates to a lithium-manganese compound machine which comprises an adhesive tape unwinding device, a negative electrode feeding device, a positive electrode feeding device and a diaphragm unwinding and dispensing device, the device further comprises a first manipulator and a second manipulator. Through the specific position structure, the complexity of the equipment is greatly reduced, the size is reduced, the effect of reducing the beat calibration difficulty between the modules is achieved, and the purposes of reducing cost and increasing efficiency are achieved.

Description

Technical Field

[0001] The invention relates to an automated production device for lithium batteries, in particular to a lithium-manganese composite machine. Background Art

[0002] Lithium batteries consist of positive and negative electrodes and a separator between them, which are folded or wound to form a square or cylindrical battery cell. For small square soft-pack lithium-manganese batteries, the previous process steps are synchronous unwinding of positive and negative electrodes and separators, welding of pole ears, fixed-length cutting, folding, gluing and edge sealing. Due to the process characteristics, the equipment structure is often more complicated and the whole machine is larger. At the same time, it takes a lot of effort to calibrate the rhythm of each step, especially in the front-end unwinding and pole ear welding stage, so the overall cost of the equipment is high and the production efficiency is low. Summary of the invention

[0003] In view of the above situation, it is necessary to provide a lithium-manganese composite machine that solves at least one of the above problems.

[0004] A lithium-manganese composite machine, comprising a tape unwinding device, a negative electrode feeding device, a positive electrode feeding device and a diaphragm unwinding and dispensing device; and also comprising a first manipulator and a second manipulator; The unwinding direction of the tape unwinding device is the length direction of the equipment, and the loading direction of the negative electrode feeding device is consistent with the tape unwinding direction, and the two are arranged in parallel; the end of the tape unwinding device is a carrier platform, and the end of the negative electrode feeding device is a material transfer platform; the positions of the carrier platform and the material transfer platform are aligned; the first manipulator travels back and forth between the carrier platform and the material transfer platform to transfer the negative electrode assembly from the material transfer platform to the tape on the carrier platform; The unwinding direction of the diaphragm unwinding and dispensing device is consistent with the unwinding direction of the tape, and the diaphragm unwinding and dispensing device is arranged downstream of the tape unwinding device; the loading direction of the positive electrode loading device is perpendicular to the unwinding direction of the diaphragm unwinding and dispensing device; the end of the diaphragm unwinding and dispensing device is the second supporting platform, and the end of the positive electrode loading device is the second material transfer platform; the positions of the second supporting platform and the second material transfer platform are aligned; the second manipulator moves back and forth between the second supporting platform and the second material transfer platform, and is used to transfer the positive electrode assembly from the second material transfer platform to the diaphragm on the second supporting platform.

[0005] As a further solution of the present invention: it also includes a cutting device, a folding device, a gluing device and a material unloading detection device which are sequentially arranged downstream of the diaphragm unwinding and gluing device.

[0006] The present invention relates to a lithium manganese composite machine, comprising a tape unwinding device, a negative electrode feeding device, a positive electrode feeding device and a diaphragm unwinding and dispensing device; it also comprises a first manipulator and a second manipulator; through a specific position structure, the complexity of the equipment is greatly reduced, the volume is reduced, and the difficulty of beat calibration between modules is reduced, thereby achieving the goal of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is the whole machine structure diagram of the present invention; Figure 2 It is a schematic diagram of the positions of the tape unwinding device and the negative electrode feeding device of the present invention; Figure 3 It is a schematic diagram of the positions of the diaphragm unwinding and dispensing device and the positive electrode feeding device of the present invention. DETAILED DESCRIPTION

[0008] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0009] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "center", "longitudinal", "lateral", "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0010] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0011] like Figure 1-Figure 3As shown, a lithium-manganese composite machine includes a tape unwinding device 100, a negative electrode feeding device 200, a positive electrode feeding device 300, a diaphragm unwinding and gluing device 400, a cutting device 500, a folding device 600, a gluing device 700 and a material unloading detection device 800; it is used to stack and compound the tape, the negative electrode (lithium tape with a pole piece), the positive electrode (a positive electrode component of a manganese material with a pole piece) and the diaphragm in a certain order, and finally fold and glue them to form a small square soft-pack lithium-manganese battery. Among them, unlike the traditional method, the positive electrode uses an independent feeding method to feed the positive and negative electrode modules, which simplifies the unwinding mechanism in the traditional process, solves the high requirements of the traditional equipment for the beat design, and reduces the design difficulty, calibration difficulty and production cost of the equipment.

[0012] The tape unwinding device 100 and the negative electrode feeding device 200 are arranged side by side at one end of the equipment, and the direction of the tape unwinding is consistent with the feeding direction of the negative electrode. Due to the adoption of this parallel layout, the width space of the equipment can be fully utilized to achieve the effect of reducing the overall length of the equipment; the length of the tape unwinding device 100 is consistent with the length of the negative electrode feeding device 200, and the debugging personnel can make an intuitive comparison in the width direction with the naked eye, and can achieve beat calibration without comparing through various parameters, which greatly optimizes the beat consistency debugging efficiency of the two.

[0013] In this embodiment, the distance between the tape unwinding device 100 and the negative electrode feeding device 200 is fixed, and a first manipulator 1 is arranged horizontally above the two. The first manipulator 1 is used to transfer the negative electrode at the negative electrode feeding device 200 to the tape released by the tape unwinding device 100. Under the premise that the tape unwinding position is fixed, the distance from the tape to the negative electrode feeding device 200 is fixed, and the effect of free position calibration can be achieved directly by fixing the moving stroke of the first manipulator 1; when facing the processing of lithium manganese batteries of different models (different sizes), there is no need to adjust the moving stroke of the first manipulator 1, and the positioning mechanism and the equivalent structure are eliminated, so that the overall equipment is simplified and the production cost is reduced.

[0014] Specifically, a carrier platform 110 is provided at the end of the tape unwinding device 100, and a material transfer platform 210 is provided at the end of the negative electrode feeding device 200; the carrier platform 110 and the material transfer platform 210 are relatively positioned in the width direction of the equipment and the distance is fixed, and the track of the first manipulator 1 directly straddles the carrier platform 110 and the material transfer platform 210 in the form of a gantry, so that the first manipulator 1 can stably and quickly transfer the material from the material transfer platform 210 to the carrier platform 110 by reciprocating at a fixed distance. Based on this structure, the alignment of the working rhythm is mainly achieved between the displacement speed of the first manipulator 1 and the unwinding speed of the tape unwinding device 100, and the rhythm of the negative electrode feeding device 200 can be slightly higher than the rhythm of the first manipulator 1, that is, the feeding time is less than the round-trip time of the first manipulator 1. Compared with the traditional synchronous unwinding which requires the joint alignment of three dimensions, it is easier to carry out related calibration work, reduce the rhythm gap, and effectively improve the overall efficiency of the equipment.

[0015] Similarly, the positive electrode loading device 300 is aligned with the diaphragm unwinding and dispensing device 400 , and the material is transferred from the positive electrode loading device 300 to the diaphragm unwinding and dispensing device 400 through the second manipulator 2 .

[0016] Specifically, the diaphragm unwinding and dispensing device 400 is arranged at the downstream position of the tape unwinding device 100, and the direction of unwinding the diaphragm by the diaphragm unwinding and dispensing device 400 is consistent with the unwinding direction of the tape, which is the length direction of the device; the positive electrode feeding device 300 is arranged on the side of the diaphragm unwinding and dispensing device 400, and the positive electrode feeding device 300 and the negative electrode feeding device 200 are located on the same side in the width direction of the device. The positive electrode feeding device 300 and the negative electrode feeding device 200 have the same structure, and the two are only different in position and the material transferred.

[0017] It is easy to understand that the diaphragm unwinding and dispensing device 400 includes a second loading platform 410 , and the second loading platform 410 is aligned with the second material transfer platform 310 of the positive electrode loading device 300 , and the positive electrode assembly is transferred by the second robot 2 .

[0018] It should be noted that in order to reduce the difficulty of rhythm calibration, the feeding direction of the negative electrode feeding device 200 is consistent with the direction of tape unwinding, that is, the length direction of the equipment, while the feeding direction of the positive electrode feeding device 300 is perpendicular to the negative electrode feeding device 200, that is, the width direction of the equipment. The purpose of this setting is to reduce the length space occupied by the equipment and achieve the purpose of reducing the volume. Specifically, based on the upstream tape unwinding speed and the negative electrode feeding speed, the diaphragm unwinding speed of the diaphragm unwinding and dispensing device 400 must be consistent with the tape unwinding speed, and the positive electrode assembly and the negative electrode assembly need to be stacked in the same position, so it is only necessary to set the rhythm of the positive electrode feeding device 300 to be consistent with the rhythm of the negative electrode feeding device 200, without the need for secondary calibration, and there is no need to set the feeding direction to the length direction of the equipment like the negative electrode feeding device 200.

[0019] After the raw materials pass through the above four devices, they form a four-layer structure, which is the positive electrode component, separator, negative electrode component and tape from top to bottom. After cutting, folding and gluing according to the previous rhythm, the finished product is formed.

[0020] Furthermore, the cutting device 500, the folding device 600, the gluing device 700 and the material unloading detection device 800 are sequentially arranged at the downstream position of the diaphragm unwinding and gluing device 400, corresponding to the cutting, folding, gluing and material unloading in the traditional process respectively.

[0021] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A lithium manganese composite machine, characterized in that: It includes a tape unwinding device, a negative electrode feeding device, a positive electrode feeding device and a diaphragm unwinding and dispensing device; it also includes a first manipulator and a second manipulator; The unwinding direction of the tape unwinding device is the length direction of the equipment, and the loading direction of the negative electrode feeding device is consistent with the tape unwinding direction, and the two are arranged in parallel; the end of the tape unwinding device is a carrier platform, and the end of the negative electrode feeding device is a material transfer platform; the positions of the carrier platform and the material transfer platform are aligned; the first manipulator travels back and forth between the carrier platform and the material transfer platform to transfer the negative electrode assembly from the material transfer platform to the tape on the carrier platform; The unwinding direction of the diaphragm unwinding and dispensing device is consistent with the unwinding direction of the tape, and the diaphragm unwinding and dispensing device is arranged downstream of the tape unwinding device; the loading direction of the positive electrode loading device is perpendicular to the unwinding direction of the diaphragm unwinding and dispensing device; the end of the diaphragm unwinding and dispensing device is the second supporting platform, and the end of the positive electrode loading device is the second material transfer platform; the positions of the second supporting platform and the second material transfer platform are aligned; the second manipulator moves back and forth between the second supporting platform and the second material transfer platform, and is used to transfer the positive electrode assembly from the second material transfer platform to the diaphragm on the second supporting platform.

2. The lithium-manganese composite machine according to claim 1, characterized in that: It also includes a cutting device, a folding device, a gluing device and a material unloading detection device which are sequentially arranged downstream of the diaphragm unwinding and gluing device.

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