Square battery cell winding and discharging mechanism

Abstract

The utility model discloses a square cell winding and blanking mechanism, which comprises a rotary winding device, a winding device, a rotary mechanical clamp and a conveyer belt, the rotary winding device is provided with a plurality of winding needles along the circumferential direction of the central point, and the winding needles can rotate along the central point of the rotary winding device. The winding device is arranged on the side face of the rotary type winding device and comprises a telescopic rod and a pushing pressing wheel used for conducting winding and rubberizing on a battery cell, the telescopic rod is connected with the pushing pressing wheel, the pushing pressing wheel is aligned with one winding needle, and the rotary type mechanical clamping hand is arranged on the side face of the rotary type winding device. A plurality of telescopic clamping jaws are arranged on the rotary mechanical clamping hand in the circumferential direction, the clamping jaws are aligned to one winding needle, and the conveying belt is arranged below the rotary mechanical clamping hand. According to the utility model, after the square battery cell produced by the round winding needle is wound, the wound battery cell is subjected to blanking and pre-pressing forming, the consistency is high through automatic pre-pressing, the blanking process and equipment are simplified, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of battery core production equipment, and particularly relates to a square battery core winding and unwinding mechanism. Background Art

[0002] The winding process is a packaging method for lithium battery production. The winding process is to roll the slit positive and negative electrodes and the isolation film together by controlling the speed, tension, relative position, etc. of the electrodes. In actual production, when the automatic winding machine switches from producing cylindrical battery cells to producing small square battery cells, in order to reduce costs, the winding needles are usually not replaced for production, so round winding needles are used to produce square battery cells. When using round winding needles to produce square battery cells for winding, it is necessary to first grab them with a blanking clamp, and then place them to the worker through a mobile robot. The cylindrical core is manually pre-pressed to be flat, and then placed on the conveyor belt. This blanking method is cumbersome, and the consistency of manual pressing is poor, and the labor cost is high. Therefore, in order to avoid the shortcomings of the existing technology, it is necessary to improve the existing technology. Utility Model Content

[0003] The purpose of the utility model is to provide a square battery cell winding and unloading mechanism, which can unload and pre-press the wound battery cells after they are wound by circular winding needles. The automatic pre-pressing has high consistency, simplifies the unloading process and equipment, and improves efficiency.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0005] The wheeled mechanism is configured to move the rollers relative to the rollers to move the rollers relative to the rollers, and the rollers are configured to move the rollers relative to the rollers when the rollers are in a state of rotation and to move the rollers relative to the rollers when the rollers are in a state of rotation.

[0006] As a preferred solution of the above-mentioned square battery cell winding and unloading mechanism, the winding device is provided with an angle sensor for detecting the winding angle of the core and a position sensor for detecting the position of the core tab.

[0007] As a preferred solution of the above-mentioned square battery cell winding and unloading mechanism, a pair of flat clamps parallel to each other are provided on the clamping jaws.

[0008] As a preferred solution of the above-mentioned square battery cell winding and unloading mechanism, the clamping jaws are pneumatic clamping jaws, and the pneumatic clamping jaws adjust the clamping force by air pressure.

[0009] As a preferred solution of the above-mentioned square battery cell winding and unloading mechanism, the clamping jaw is connected to an electric cylinder, and the electric cylinder can drive the clamping jaw to extend and retract.

[0010] As a preferred solution of the above-mentioned square battery core winding and unloading mechanism, the conveyor belt is provided with a groove portion for accommodating the winding core.

[0011] As a preferred solution of the above-mentioned square battery cell winding and unloading mechanism, a short-circuit tester for performing a short-circuit test on the battery cells is provided on the conveyor belt.

[0012] The utility model provides a square battery cell winding and unloading mechanism, which has the following beneficial effects compared with the prior art:

[0013] The winding needle of the rotary winding device of the utility model can wind the battery cell, and the pole piece and the diaphragm are rolled into the winding position of the winding needle for winding. After the winding is completed, the rotary winding device rotates so that the winding needle which has completed the winding of the battery cell rotates to a position aligned with the pushing pressure wheel, and the telescopic rod drives the pushing pressure wheel to extend toward the battery cell which has completed the winding, and pushes the pressure wheel to glue the battery cell, and pushes the pressure wheel to press the adhesive paper to paste it flush. After gluing, the rotary winding device continues to rotate so that the battery cell with glue is rotated to a position aligned with the clamping claw, and the clamping claw extends and clamps the battery cell To carry out unloading, the gripper adjusts the clamping force to pre-press the battery cell. The constant clamping force makes the pre-pressing consistency of the battery cell high. The rotary mechanical gripper rotates to rotate the gripper holding the battery cell to the top of the conveyor belt, and the pre-pressed battery cell is placed on the conveyor belt for transportation. The rotary mechanical gripper unloads and pre-presses the battery cell and transfers the pre-pressed battery cell to the conveyor belt, simplifying the unloading, pre-pressing and transfer processes. The unloading, pre-pressing and transfer of the battery cell can be completed only by the rotary mechanical gripper, which simplifies the unloading process and equipment and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the winding and unloading mechanism of the square battery cell of the present invention.

[0016] Markings in the figure:

[0017] 100, rotary winding device; 110, winding needle; 200, rewinding device; 210, telescopic rod; 220, pushing pressure wheel; 230, angle sensor; 240, position sensor; 300, rotary mechanical gripper; 310, clamping claw; 320, flat clamp; 330, electric cylinder; 400, conveyor belt; 410, groove part; 420, short-circuit tester. DETAILED DESCRIPTION

[0018] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] Please also refer to Figure 1 Now, the square battery cell winding and unloading mechanism provided by the embodiment of the utility model is described.

[0023] like Figure 1As shown, a square battery cell winding and unloading mechanism according to an embodiment of the present invention comprises a rotary winding device 100, a winding device 200, a rotary mechanical gripper 300 and a conveyor belt 400. The rotary winding device 100 is provided with a plurality of winding needles 110 along the circumference of the center point. The winding needles 110 can rotate along the center point of the rotary winding device 100. The winding device 200 is provided on the side of the rotary winding device 100. The winding device 200 comprises a telescopic rod 210 and a pushing pressure wheel 220 for winding and gluing the battery cell. The telescopic rod 210 is connected to the pushing pressure wheel 220, the pushing pressure wheel 220 is aligned with one of the winding needles 110, the rotary mechanical gripper 300 is arranged on the side of the rotary winding device 100, the rotary mechanical gripper 300 is provided with a plurality of retractable jaws 310 along the circumference, the jaws 310 can rotate around the center point of the rotary mechanical gripper 300, the jaws 310 can adjust the clamping force, the jaws 310 are aligned with one of the winding needles 110, and the conveyor belt 400 is arranged below the rotary mechanical gripper 300.

[0024] Specifically, the rotary winding device 100 is provided with three winding needles 110 along the circumference of the center point, and a rotating shaft is provided at the center of the rotary winding device 100 to drive the three winding needles 110 to rotate around the center, and the rotary mechanical clamp 300 is provided with three retractable clamping jaws 310 along the circumference, and a rotating shaft is provided at the center of the rotary mechanical clamp 300 to drive the three clamping jaws 310 to rotate around the center. The setting of the three winding needles 110 can realize that one winding needle 110 is winding, the battery cell on one winding needle 110 is winding and gluing, and the battery cell on one winding needle 110 is unloading, while one clamping jaw 310 is unloading, one is pre-pressing the battery cell, and the other is transferring the battery cell to the conveyor belt, so that the production efficiency is high and the position and space distribution is reasonable.

[0025] Exemplarily, the winding device 200 is provided with an angle sensor 230 for detecting the winding angle of the core and a position sensor 240 for detecting the position of the core tab. The core is the battery cell that has completed the winding process. By detecting the winding angle of the core, it is determined that the battery cell has completed the winding, and then the pressing wheel 220 is pushed to wind and glue the completed battery cell. By detecting the position of the core tab, it is determined that the battery cell has reached the unloading position, and then the clamping claw 310 is extended to clamp the battery cell for unloading.

[0026] Illustratively, a pair of parallel flat clamps 320 are provided on the clamping jaws 310 . The parallel flat clamps 320 balance the forces on the battery cell, improve the consistency of pre-pressing, and increase the efficiency of pre-pressing.

[0027] Exemplarily, the clamping jaw 310 is a pneumatic clamping jaw 310, which adjusts the clamping force by air pressure. The pneumatic clamping jaw 310 is driven by a cylinder, and the air pressure is used to control the movement of the piston in the cylinder. By precisely controlling the size and flow direction of the air pressure, fine adjustment of the clamping force and speed of the pneumatic clamping jaw 310 can be achieved.

[0028] Exemplarily, the clamping jaw 310 is connected to an electric cylinder 330, which can drive the clamping jaw 310 to extend and retract. The electric cylinder 330 is fixedly connected to the rotating shaft at the center of the rotary mechanical clamping jaw 300. As the rotary mechanical clamping jaw 300 rotates, the movable end drives the clamping jaw 310 to extend toward the unloading position of the rotary winding device 100 for unloading when unloading. The cylinder drives the pneumatic clamping jaw 310 to clamp the battery cell. The electric cylinder 330 has a compact structure and high control precision. The electric cylinder 330 drives the clamping jaw 310 to extend and retract by precisely controlling the stroke through the motor.

[0029] For example, the conveyor belt 400 is provided with a groove portion 410 for accommodating the winding core. Accommodating the winding core in the groove can prevent the winding core from rolling and falling when the conveyor belt 400 is running.

[0030] Illustratively, a short-circuit tester 420 for performing a short-circuit test on the battery cells is provided on the conveyor belt 400 . The short-circuit tester 420 is connected to a short-circuit test probe for performing a short-circuit test on the core to ensure that the core can operate normally.

[0031] The utility model provides a square battery cell winding and unloading mechanism, which has the following beneficial effects compared with the prior art:

[0032] The winding needle 110 of the rotary winding device 100 of the present invention can wind the battery cell, and the pole piece and the diaphragm are rolled into the winding position of the winding needle 110 for winding. After the winding is completed, the rotary winding device 100 rotates so that the winding needle 110 that has completed the battery cell winding work rotates to a position aligned with the pushing pressure wheel 220, and the telescopic rod 210 drives the pushing pressure wheel 220 to extend toward the battery cell that has been wound, and pushes the pressure wheel 220 to glue the battery cell, and pushes the pressure wheel 220 to press the adhesive paper to paste it flush. After gluing, the rotary winding device continues to rotate so that the battery cell with glue is rotated to a position aligned with the clamping claw 310, and the clamping claw 310 extends and clamps the battery cell to For unloading, the square battery cells need to be pre-pressed after winding, and the clamping jaws 310 adjust the clamping force to pre-press the battery cells into shape. The constant clamping force makes the pre-pressing consistency of the battery cells high, and the rotary mechanical gripper 300 rotates to rotate the clamping jaws 310 holding the battery cells to the top of the conveyor belt 400, and the pre-pressed battery cells are placed on the conveyor belt 400 for transportation. The rotary mechanical gripper 300 unloads and pre-presses the battery cells and transfers the pre-pressed battery cells to the conveyor belt 400, simplifying the unloading, pre-pressing and transfer processes. The unloading, pre-pressing and transfer of the battery cells can be completed only by the rotary mechanical gripper 300, which simplifies the unloading process and equipment and improves efficiency.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A square battery cell winding and unloading mechanism, characterized in that: include: A rotary winding device, wherein the rotary winding device is provided with a plurality of winding needles circumferentially along a center point, and the winding needles are capable of rotating along the center point of the rotary winding device; A winding device, the winding device is arranged on the side of the rotary winding device, the winding device includes a telescopic rod and a pushing pressure wheel for winding and gluing the battery cell, the telescopic rod is connected to the pushing pressure wheel, and the pushing pressure wheel is aligned with one of the winding needles; A rotary mechanical gripper, the rotary mechanical gripper being arranged on the side of the rotary winding device, the rotary mechanical gripper being provided with a plurality of retractable jaws along the circumference, the jaws being capable of rotating around the center point of the rotary mechanical gripper, the jaws being capable of adjusting the clamping force, and the jaws being aligned with one of the winding needles; A conveyor belt is arranged below the rotary mechanical gripper.

2. The square battery core winding and unloading mechanism according to claim 1, characterized in that: The winding device is provided with an angle sensor for detecting the winding angle of the winding core and a position sensor for detecting the position of the winding core tab.

3. The square battery core winding and unloading mechanism according to claim 1, characterized in that: A pair of flat clamps parallel to each other are arranged on the clamping jaws.

4. The square battery core winding and unloading mechanism according to claim 3, characterized in that: The clamping jaws are pneumatic clamping jaws, and the clamping force of the pneumatic clamping jaws is adjusted by air pressure.

5. The square battery core winding and unloading mechanism according to claim 4, characterized in that: The clamping jaw is connected to an electric cylinder, and the electric cylinder can drive the clamping jaw to extend and retract.

6. The square battery core winding and unloading mechanism according to claim 1, characterized in that: The conveyor belt is provided with a groove portion for accommodating the winding core.

7. The square battery core winding and unloading mechanism according to claim 6, characterized in that: A short-circuit tester for performing a short-circuit test on the battery cells is provided on the conveyor belt.

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