A high-speed winding machine for simultaneous winding of AB cells

Abstract

This invention discloses a high-speed winding machine for simultaneous AB cell winding, comprising a first winding needle, a second winding needle, a third winding needle, a first diaphragm pressing device, a second diaphragm pressing device, a third diaphragm pressing device, and a lower diaphragm pre-pressing device. The first winding needle simultaneously winds four electrode sheets and three diaphragms located between the electrode sheets. The first diaphragm pressing device, located at the end of the first winding needle, presses down on the diaphragm head. The lower diaphragm pre-pressing device, located on one side of the first winding needle, transports the fourth diaphragm and can move closely to the first winding needle to press down and cut the diaphragm. The second and third winding needles are positioned below the first winding needle. The second winding needle completes the diaphragm finishing and adhesive application, and the second diaphragm pressing device, located at the end of the second winding needle, presses down on the diaphragm head. The third winding needle completes the cell unloading, and the third diaphragm pressing device, located at the end of the third winding needle, presses down on the diaphragm head. This invention offers high production capacity, high efficiency, and significantly simplifies the cell assembly process.

Description

Technical Field

[0001] This invention relates to the field of battery cell technology, and more specifically to a high-speed winding machine for simultaneously winding AB battery cells. Background Technology

[0002] Currently, wound battery cells have advantages such as high-rate discharge capability, excellent high and low temperature performance, stable high output voltage, safety and durability, and are widely used in instruments, power tools, fitness equipment, medical devices, solar lights, power transmission equipment, various backup power supplies and the automotive industry.

[0003] The production of wound battery cells requires a battery cell winding machine, and according to process requirements, A and B battery cells need to be paired and assembled. In the current battery cell winding production, A and B battery cells are manufactured separately using A winding machine and B winding machine, respectively. They are then transported to the robotic arm via a material line, where A and B battery cells are paired, assembled into a casing, and subsequent processes are completed. This process is inefficient and time-consuming. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-speed winding machine for simultaneous winding of AB battery cells.

[0005] The technical solution of the present invention is as follows:

[0006] A high-speed winding machine for simultaneous winding of AB battery cells includes a first winding needle, a second winding needle, a third winding needle, a first diaphragm pressing device, a second diaphragm pressing device, a third diaphragm pressing device, and a lower diaphragm pre-pressing device. The first winding needle simultaneously winds four electrode sheets and three diaphragms located between the electrode sheets. The first diaphragm pressing device is located at the end of the first winding needle to press the diaphragm head and rotates and winds together with the first winding needle. The lower diaphragm pre-pressing device is located on one side of the first winding needle to transport the fourth diaphragm and can move closely to the first winding needle to press and cut the diaphragm. The second and third winding needles are located opposite each other below the first winding needle. The second winding needle completes the diaphragm finishing and adhesive application. The second diaphragm pressing device is located at the end of the second winding needle to press the diaphragm head and rotates and winds together with the second winding needle. The third winding needle completes the battery cell unloading. The third diaphragm pressing device is located at the end of the third winding needle to press the diaphragm head and rotates and winds together with the third winding needle.

[0007] Furthermore, the electrode sheet is fed through two clamping plates and cut by a cutter.

[0008] Furthermore, a laser die-cutting assembly is added to the feeding line of the electrode sheet.

[0009] Furthermore, the diaphragm is fed by two guide rollers, one in front and one behind.

[0010] Furthermore, the lower diaphragm pre-pressing device includes a lead screw, a motor located at one end of the lead screw, and a first guide roller, a second guide roller, a pressure roller, a cylinder, and a diaphragm cutter movably mounted on the lead screw. The pressure roller, the first guide roller, and the second guide roller are arranged sequentially. The fourth diaphragm is fed through the first guide roller and the second guide roller, and is pressed against the first winding needle by the pressure roller. The cylinder is located below the first guide roller, and the cylinder shaft of the cylinder faces the first winding needle and is connected to the diaphragm cutter. The pressure roller and the diaphragm cutter are driven by the motor to move closer to or away from the first winding needle.

[0011] Furthermore, the first diaphragm pressing device, the second diaphragm pressing device, and the third diaphragm pressing device are all composed of a positioning cylinder and a pressing cylinder. The cylinder body of the pressing cylinder is connected to the cylinder shaft of the positioning cylinder, and a pressing block facing the winding needle is connected to the cylinder shaft of the pressing cylinder. The pressing block is driven to move closer to or away from the winding needle by the positioning cylinder.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can simultaneously wind four electrode sheets and four separators. In terms of production capacity, with four electrode sheets wound at the same time, the electrode sheet length is reduced by about half under the premise of a certain cell capacity, and the cell winding time is shortened by half, greatly increasing the production capacity. At the same time, a single cell after winding can achieve the effect of AB cell assembly, so that the work that originally required A winding machine and B winding machine can be completed by one machine efficiently, greatly simplifying the logistics line and AB cell assembly robot and other mechanisms. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This invention provides a schematic diagram of a high-speed winding machine for simultaneously winding AB battery cells.

[0015] Figure 2 The present invention provides a working state of a high-speed winding machine for simultaneous winding of AB battery cells. Figure 1 ;

[0016] Figure 3 The present invention provides a working state of a high-speed winding machine for simultaneous winding of AB battery cells. Figure 2 ;

[0017] Figure 4 This is a schematic diagram of a high-speed winding machine for simultaneous winding of AB battery cells, with an added laser die-cutting component. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] To illustrate the technical solution described in this invention, specific embodiments are described below.

[0020] Example

[0021] Please see Figure 1 This embodiment provides a high-speed winding machine for simultaneous winding of AB cells, including a first winding needle 1, a second winding needle 2, a third winding needle 3, a first diaphragm pressing device 4, a second diaphragm pressing device 5, a third diaphragm pressing device 6, and a lower diaphragm pre-pressing device 7. The first winding needle 1 simultaneously winds four electrode sheets and three diaphragms located between the electrode sheets. The first diaphragm pressing device 4 is located at the end of the first winding needle 1 to press down the diaphragm head and rotates and winds together with the first winding needle 1. The lower diaphragm pre-pressing device 7 is located at the end of the first winding needle 1. One side is used to transport the fourth diaphragm and can be moved to press and cut the diaphragm by closely adhering to the first winding needle 1. The second winding needle 2 and the third winding needle 3 are located opposite each other below the first winding needle 1. The second winding needle 2 completes the diaphragm finishing and applies adhesive. The second diaphragm pressing device 5 is located at the end of the second winding needle 2 to press the diaphragm head and rotates and winds together with the second winding needle 2. The third winding needle 3 completes the cell unloading. The third diaphragm pressing device 6 is located at the end of the third winding needle 3 to press the diaphragm head and rotates and winds together with the third winding needle 3.

[0022] The electrode sheet is fed through two clamping plates 8 and cut by a cutter 9; the diaphragm is fed through two guide rollers.

[0023] Specifically, the lower diaphragm pre-pressing device 7 includes a lead screw 71, a motor 72 located at one end of the lead screw 71, and a first guide roller 73, a second guide roller 74, a pressure roller 75, a cylinder 76, and a diaphragm cutter 77 movably mounted on the lead screw 71. The pressure roller 75, the first guide roller 73, and the second guide roller 74 are arranged sequentially. The fourth diaphragm is fed through the first guide roller 73 and the second guide roller 74, and is pressed against the first winding needle 1 by the pressure roller 75. The cylinder 76 is located below the first guide roller 73, and the cylinder shaft of the cylinder 76 faces the first winding needle 1 and is connected to the diaphragm cutter 77. The pressure roller 75 and the diaphragm cutter 77 are driven by the motor 72 to move closer to or away from the first winding needle 1.

[0024] Specifically, the first diaphragm pressing device 4, the second diaphragm pressing device 5, and the third diaphragm pressing device 6 are all composed of a relief cylinder 41 and a pressing cylinder 42. The cylinder body of the pressing cylinder 42 is connected to the cylinder shaft of the relief cylinder 41. A pressing block 43 facing the winding needle is connected to the cylinder shaft of the pressing cylinder 42. The pressing block 43 is driven to approach or move away from the winding needle by the relief cylinder 41.

[0025] Working principle:

[0026] like Figure 2 As shown, at the initial winding of the first coil of needle 1, after the large disc flips over, the first diaphragm pressing device 4's avoidance cylinder 41 and pressing cylinder 42 at the appropriate position of the first coil of needle 1 activate to press the diaphragm head (as shown). Figure 3 (As shown) and rotates and winds together with the first winding needle 1; the pressure roller 75 extends and presses against the first winding needle 1, pressing the diaphragm; the cylinder 76 extends, and the diaphragm cutter 77 cuts the two layers of diaphragm; the pressure roller 75 has a clearance position to avoid the pressure plate in the pressing state; after the first winding needle 1 rotates one and a half turns, the diaphragm head is pressed by the diaphragm material line; the clearance cylinder 41 and the pressing cylinder 42 of the first diaphragm pressing device 4 are activated, and the pressure plate returns to its original position. Figure 3 The electrode is in the air-avoiding state shown; at the same time, the front and rear clamping plates 8 of the four electrodes clamp the electrodes in sequence according to the process requirements and feed them from the upper position of the clamping plate to the lower position of the clamping plate; the electrodes are wound together with the diaphragm; after the length of the electrodes meets the process requirements, the electrodes are cut by the cutter 9; the front and rear clamping plates 8 of the four electrodes open and reset; the first winding needle 1 completes the winding of the battery cell.

[0027] While the first roll of needle 1 is winding, the second roll of needle 2 performs the action; the diaphragm is finished and glued as the second roll of needle 2 completes the process.

[0028] While the first coil of needle 1 is being wound, the third coil of needle 3 completes the feeding of the battery cell.

[0029] The large plate flips over, and the three winding needles repeat the above actions to complete the entire process of winding the battery cell.

[0030] In addition, such as Figure 4 As shown, the feeding line of the four electrodes can be equipped with a laser die-cutting component 10 to enable it to have integrated laser die-cutting and winding functions.

[0031] In summary, this high-speed winding machine for simultaneous AB cell winding can wind four electrode sheets and four separators at the same time. In terms of production capacity, with four electrode sheets wound simultaneously, the electrode sheet length is reduced by about half under the premise of a certain cell capacity, and the cell winding time is shortened by half, greatly increasing the production capacity. At the same time, a single cell after winding can achieve the effect of AB cell assembly, so that the work that originally required A winding machine and B winding machine can be completed by one machine efficiently, greatly simplifying the logistics line and the AB cell assembly robot and other mechanisms.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-speed winding machine for simultaneous winding of AB battery cells, characterized in that: The device includes a first winding needle, a second winding needle, a third winding needle, a first diaphragm pressing device, a second diaphragm pressing device, a third diaphragm pressing device, and a lower diaphragm pre-pressing device. The first winding needle simultaneously winds four electrode sheets and three diaphragms located between the electrode sheets. The first diaphragm pressing device, located at the end of the first winding needle, presses down on the diaphragm head and rotates with the first winding needle. The lower diaphragm pre-pressing device, located on one side of the first winding needle, is used to transfer the fourth diaphragm and can move closely to the first winding needle to press and cut the diaphragm. The second and third winding needles are located opposite each other below the first winding needle. The second winding needle completes the diaphragm finishing and applies adhesive. The second diaphragm pressing device, located at the end of the second winding needle, presses down on the diaphragm head and rotates with the second winding needle. The third winding needle completes the cell unloading. The third diaphragm pressing device, located at the end of the third winding needle, presses down on the diaphragm head and rotates with the third winding needle.

2. The high-speed winding machine for simultaneous winding of AB cells according to claim 1, characterized in that: The electrode sheet is fed through two clamping plates and cut by a cutter.

3. A high-speed winding machine for simultaneous winding of AB cells according to claim 2, characterized in that: A laser die-cutting assembly is added to the feeding line of the electrode sheet.

4. A high-speed winding machine for simultaneous winding of AB cells according to claim 1, characterized in that: The diaphragm is fed by two guide rollers.

5. A high-speed winding machine for simultaneous winding of AB cells according to claim 4, characterized in that: The lower diaphragm pre-compression device includes a lead screw, a motor located at one end of the lead screw, and a first guide roller, a second guide roller, a pressure roller, a cylinder, and a diaphragm cutter movably mounted on the lead screw. The pressure roller, the first guide roller, and the second guide roller are arranged sequentially. The fourth diaphragm is fed through the first guide roller and the second guide roller, and is pressed against the first winding needle by the pressure roller. The cylinder is located below the first guide roller, and the cylinder shaft of the cylinder faces the first winding needle and is connected to the diaphragm cutter. The pressure roller and the diaphragm cutter are driven by the motor to move closer to or away from the first winding needle.

6. A high-speed winding machine for simultaneous winding of AB cells according to claim 1, characterized in that: The first diaphragm pressing device, the second diaphragm pressing device, and the third diaphragm pressing device are all composed of a positioning cylinder and a pressing cylinder. The cylinder body of the pressing cylinder is connected to the cylinder shaft of the positioning cylinder. A pressing block facing the winding needle is connected to the cylinder shaft of the pressing cylinder. The pressing block is driven to move closer to or away from the winding needle by the positioning cylinder.

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