Battery cell coating device

Abstract

The application relates to a battery cell film wrapping device, which comprises a jig, the jig is circulated among multiple work stations, the jig is used for carrying a film body and a battery cell, the battery cell is stacked on the film body, and the battery cell film wrapping device further comprises a film wrapping mechanism, the film wrapping mechanism comprises a turnover assembly, the turnover assembly comprises a clamping piece and a turnover piece, the clamping piece is used for clamping the film body, and the driving end of the turnover piece is connected with the clamping piece so as to drive the clamping piece to rotate around the battery cell. When the battery cell film wrapping device disclosed by the application is used for battery cell film wrapping operation, the battery cell does not need to be transferred from the jig to other positions, and the film wrapping mechanism can continuously perform film wrapping operation on the battery cell, so that the film wrapping efficiency of the battery cell is improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a cell coating device. Background Technology

[0002] Currently, batteries, as energy storage devices, are being used more and more widely in various industries. During the assembly of square batteries, a protective film needs to be wrapped around the circumferential sides of the cell before the cell is installed in the casing. This cell wrapping ensures the quality and safety of the battery.

[0003] In related technologies, the cell coating process is generally performed manually or by machine. To meet the needs of batteries, coating equipment is typically used to accommodate mass production. Generally, the cells are transferred to the coating equipment, where they are coated.

[0004] However, battery cells are generally mass-produced, and the cells move from one processing station to another with the fixture. When the cells are coated, they need to be transferred to the coating equipment, and after coating, they need to be transferred out of the coating equipment. Not only does this require additional transfer equipment, but the transfer process is also time-consuming, resulting in low coating efficiency. Summary of the Invention

[0005] This application provides a battery cell coating device to solve the technical problems of complex coating mechanism structure and low coating efficiency in related technologies.

[0006] A battery cell coating apparatus includes a fixture that moves between multiple workstations and carries a membrane body and battery cells, the battery cells being stacked on the membrane body. The apparatus also includes a coating mechanism comprising:

[0007] The flipping assembly includes a clamping member and a flipping member. The clamping member is used to clamp the membrane body, and the driving end of the flipping member is connected to the clamping member to drive the clamping member to rotate around the battery cell.

[0008] In some embodiments, the flipping element includes:

[0009] Flip rack;

[0010] A flipping drive unit, which is connected to the flipping frame;

[0011] A flipping connecting arm, one end of which is connected to the flipping drive member, and the other end of which is connected to the clamping member, wherein the length direction of the flipping connecting arm is set at an angle to the rotation axis direction of the drive end of the flipping drive member.

[0012] In some embodiments, the clamping members include multiple clamping members, and the flipping member further includes a mounting arm connected to the flipping connecting arm, wherein the multiple clamping members are connected to the mounting arm along a conveying direction perpendicular to the fixture.

[0013] In some embodiments, the flip-up connecting arm includes a telescopic arm.

[0014] In some embodiments, the coating mechanism further includes a coating linear module, the drive end of which moves along the conveying direction of the fixture and is connected to the flipping assembly.

[0015] In some embodiments, the coating mechanism is provided in two sets, and the two sets of coating mechanisms are arranged at intervals along the conveying direction perpendicular to the fixture, forming a coating channel between the two sets of coating mechanisms for the fixture to pass through.

[0016] In some embodiments, the cell coating device further includes an adjustment linear module, the drive end of which moves along a conveying direction perpendicular to the fixture and is connected to the coating mechanism.

[0017] In some embodiments, the cell coating device further includes a scale, the length direction of which is consistent with the movement direction of the drive end of the adjustment linear module, and is spaced apart from the adjustment linear module.

[0018] In some embodiments, the coating mechanism further includes a lifting frame and a lifting linear module, the lifting frame being connected to the coating linear module, and the drive end of the lifting linear module moving vertically and connected to the lifting frame.

[0019] In some embodiments, the clamping member includes a gripper cylinder, and the gripping surface of the gripper cylinder is provided with a flexible layer.

[0020] The beneficial effects of the technical solution provided in this application include:

[0021] This application provides a battery cell coating apparatus. During battery cell coating, the battery cell flows to the coating mechanism along with the fixture. A clamping member holds one end of the membrane body, and a flipping member drives the clamping member to rotate around the battery cell. The membrane body wraps around the battery cell along with the clamping member, covering the circumferential side of the battery cell. Therefore, during the battery cell coating process, the battery cell does not need to leave the fixture, and the membrane body is directly wrapped around the battery cell to complete the coating operation. This is convenient and efficient. In addition, after the battery cell is coated, it leaves the coating mechanism along with the fixture. The fixture carrying the membrane body and the battery cell can continuously flow to the coating mechanism for continuous coating operations, improving the coating efficiency of the battery cells and making it suitable for large-scale battery cell coating processing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the cell coating device provided in the embodiments of this application;

[0024] Figure 2 A schematic diagram of the coating mechanism provided in an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the flipping component provided in an embodiment of this application.

[0026] In the diagram: 1. Coating mechanism; 11. Flipping assembly; 111. Clamping component; 111a. Flexible layer; 112. Flipping component; 1121. Flipping frame; 1122. Flipping drive component; 1123. Flipping connecting arm; 1124. Mounting arm; 12. Coating linear module; 13. Coating frame; 2. Adjusting linear module; 3. Scale. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] This application provides a battery cell coating device. The battery cell flows to the coating mechanism along with the fixture. After the clamping member clamps the membrane body, the flipping member drives the membrane body to wrap around the battery cell, so as to cover the battery cell with the membrane body. When the battery cell coating device disclosed in this application performs the battery cell coating operation, the battery cell does not need to be transferred from the fixture to other positions, and the coating mechanism can continuously perform the coating operation on the battery cell, so as to solve the technical problem of slow battery cell coating efficiency in related technologies.

[0029] A battery cell coating device includes a fixture and a coating mechanism 1. The fixture is used to carry the membrane body and the battery cell, and the fixture can move with the production line to different stations to drive the battery cell and membrane body to move between multiple stations. The membrane body is placed on the fixture, and the battery cell is stacked on the membrane body.

[0030] Furthermore, the width direction of the battery cell is consistent with the conveying direction of the fixture, and the battery cell is positioned near one edge of the membrane body to facilitate the membrane body being wrapped around the circumferential side of the battery cell by flipping the membrane body. In this embodiment, the membrane body includes a Mylar membrane.

[0031] The coating mechanism 1 is used to clamp and flip the membrane body to coat the battery cell. After the fixture moves to the coating mechanism 1, the coating mechanism 1 performs the coating operation on the battery cell on the fixture. The coated battery cell leaves the coating mechanism 1 as the fixture continues to move. Other fixtures carrying battery cells and membrane bodies then move to the coating mechanism 1 for processing. This coating mechanism 1 can perform continuous coating operations, improving coating efficiency and making it suitable for mass production.

[0032] The coating mechanism 1 includes a flipping assembly 11, which includes a clamping member 111 and a flipping member 112. The clamping member 111 is used to clamp the membrane body, and the driving end of the flipping member 112 is connected to the clamping member 111 to drive the clamping member 111 to flip around the battery cell. The membrane body is then wrapped around the battery cell along with the clamping member 111.

[0033] Specifically, refer to Figure 3 The flipping component 112 includes a flipping frame 1121, a flipping drive component 1122, and a flipping connecting arm 1123. The flipping drive component 1122 is fixed to the flipping frame 1121 by bolts. One end of the flipping connecting arm 1123 is connected to the drive end of the flipping drive component 1122, and the other end of the flipping connecting arm 1123 is connected to the clamping component 111. The length direction of the flipping connecting arm 1123 is angled to the rotation axis of the drive end of the flipping drive component 1122. Preferably, the length direction of the flipping connecting arm 1123 is perpendicular to the rotation axis of the drive end of the flipping drive component 1122. In this embodiment, the flipping drive component 1122 includes a motor.

[0034] The flipping drive 1122 drives the flipping connecting arm 1123 and the clamping member 111 to rotate. The rotation radius of the clamping member 111 is the length of the flipping connecting arm 1123. The flipping connecting arm 1123 is set to support the clamping member 111 to pass around the upper surface of the cell, so that the membrane body covers the cell as the connecting arm rotates.

[0035] With this configuration, during cell coating, the cell flows with the fixture to the coating mechanism. The clamping member 111 holds one end of the membrane body, and the flipping drive member 1122 drives the clamping member 111 to rotate around the cell. Due to the flipping connecting arm 1123, the rotation radius of the clamping member 111 is relatively large. The membrane body is wrapped around the cell along with the clamping member 111 to cover the circumferential side of the cell. Therefore, during the cell coating process, the cell does not need to leave the fixture, and the membrane body is directly wound around the cell to complete the cell coating operation. This is convenient and efficient.

[0036] Furthermore, the flipping component 112 also includes a mounting arm 1124, which is fixed to the flipping connecting arm 1123 by bolts. The clamping component 111 is fixed to the mounting arm 1124 by bolts. In some embodiments, there are multiple clamping components 111, all of which are fixed to the mounting arm 1124 by bolts, and the multiple clamping components 111 are spaced apart along the conveying direction perpendicular to the fixture. The multiple clamping components 111 can simultaneously clamp the membrane body and synchronously drive the membrane body to wind around the battery cell. When driving the membrane body to wind around the battery cell, the number of force application points on the membrane body increases, making it less prone to wrinkles during winding and improving the coating quality.

[0037] Furthermore, in some embodiments, the flip-connecting arm 1123 includes a telescopic arm, the extension length of which can be freely set. By changing the length of the flip-connecting arm 1123, the rotation radius of the clamping member 111 can be changed. When coating larger battery cells, the length of the flip-connecting arm 1123 is increased; when coating smaller battery cells, the length of the flip-connecting arm 1123 is adaptively shortened to ensure that the clamping member 111 can pass around the battery cell when rotating, and the membrane body can completely cover the battery cell. Because the length of the flip-connecting arm 1123 is adjustable, this coating device can process battery cells of various specifications, improving its applicability.

[0038] In this embodiment, reference Figure 2 The coating mechanism 1 also includes a coating linear module 12. The drive end of the coating linear module 12 moves along the conveying direction of the fixture and is connected to the flipping component 11 to drive the flipping component 11 to move along the conveying direction of the fixture. During the rotation of the clamping member 111 driven by the flipping member 112, the coating linear module 12 synchronously drives the flipping member 112 and the clamping member 111 to move along the conveying direction of the fixture to ensure that the clamping member 111 can bypass the battery cell and drive the membrane body to cover the battery cell. Due to the setting of the coating linear module 12, the clamping member 111 can be driven to move, ensuring that the clamping member 111 can completely bypass the battery cell. According to the battery cell of different sizes, the coating linear module 12 can adaptively drive the flipping component 11 to move, so that the clamping member 111 can bypass the battery cell of different sizes. Therefore, the setting of the coating linear module 12 improves the applicability of the coating device. Specifically, the coating linear module 12 includes a linear motor, and in other embodiments, the coating linear module 12 may also include a lead screw mechanism.

[0039] Further, refer to Figure 2The coating mechanism 1 also includes a coating frame 13, and the fixed end of the coating linear module 12 is fixed to the coating frame 13 by bolts. In this embodiment, the coating mechanism 1 has two sets, which are arranged side by side with a gap, and a coating channel is formed between the two sets of coating mechanisms 1. The fixture passes through the coating channel so that the two sets of coating mechanisms 1 can coat the battery cell on the fixture. The flipping components 11 of the two sets of coating mechanisms 1 simultaneously clamp the membrane body and simultaneously drive the membrane body to pass around the battery cell to complete the coating operation of the battery cell. By using two sets of coating mechanisms 1 to coat the battery cell at the same time, the number of force points on the membrane body increases. When the membrane body passes around the battery cell, it is less likely to wrinkle, thus improving the quality of coating.

[0040] Furthermore, the cell coating device also includes a base plate (not shown in the figure), and both sets of coating mechanisms 1 are slidably disposed on the base plate. The two sets of coating mechanisms 1 slide closer or further apart to adjust the distance between the two sets of coating mechanisms 1, so as to accommodate the passage of jigs and cells of different sizes, thereby adapting to the coating of cells of different sizes and improving the applicability of the coating device.

[0041] Specifically, refer to Figure 1 , Figure 2 The battery cell coating device further includes an adjusting linear module 2. The fixed end of the adjusting linear module 2 is fixed to the base plate, and the driving end of the adjusting linear module 2 is connected to the coating mechanism 1. The adjusting linear module 2 can be one or two. When there is one adjusting linear module 2, the driving end of the adjusting linear module 2 is connected to one of the coating mechanisms 1, so that the distance between the two coating mechanisms 1 can be adjusted by adjusting the position of one coating mechanism 1. In this embodiment, there are two adjusting linear modules 2, and the two adjusting linear modules 2 are respectively used to adjust the positions of two sets of coating mechanisms 1. Specifically, the adjusting linear module 2 includes a lead screw mechanism. Preferably, the lead screw mechanism is driven by a handwheel to manually adjust the position of the coating mechanism 1.

[0042] Furthermore, the coating frame 13 of the coating mechanism 1 is slidably mounted on the base plate via a guide rail assembly to improve the stability of the coating mechanism 1 when adjusting its position.

[0043] Further, refer to Figure 1 The battery cell coating device also includes a scale 3. In this embodiment, the number of scales 3 is the same as the number of coating mechanisms 1, and there are two scales. The two scales 3 are fixed to the base plate by bolts, and their length direction is consistent with the movement direction of the drive end of the adjustment linear module 2. The scales 3 and the adjustment linear module 2 are arranged adjacent to each other at intervals so as to help determine the position of the coating mechanism 1.

[0044] In some embodiments, the coating mechanism 1 further includes a lifting frame and a lifting linear module. The fixed end of the lifting linear module is fixed to the coating frame 13 by bolts, the driving end of the lifting linear module is connected to the lifting frame, and the fixed end of the coating linear module 12 is fixed to the lifting frame. Thus, the lifting frame is raised and lowered by the lifting linear module to adjust the height of the coating linear module 12 and the flipping component 11, facilitating adaptation to fixtures at different heights. That is, when the height of the line flowing through the fixtures is inconsistent, the coating processing of the battery cells on the fixtures at different heights can be performed by adjusting the height of the coating linear module 12 and the flipping component 11. Specifically, the lifting module includes a lead screw mechanism or a linear motor.

[0045] Specifically, in this embodiment, the clamping member 111 includes a gripper cylinder that clamps the membrane body. Preferably, refer to... Figure 3 The gripper cylinder has a flexible layer 111a on its gripping surface. The gripper cylinder contacts the membrane body through the flexible layer 111a, which makes the membrane body more firmly gripped and less likely to cause scratches to the membrane body when gripping it. Specifically, the flexible layer 111a includes a rubber layer.

[0046] This application provides a battery cell coating device. During battery cell coating, the battery cell flows to the coating mechanism 1 along with the fixture. The clamping member 111 clamps one end of the membrane body, and the flipping member 112 drives the clamping member 111 to rotate around the battery cell. The membrane body is wrapped around the battery cell along with the clamping member 111 to cover the circumferential side of the battery cell. Therefore, during the battery cell coating process, the battery cell does not need to leave the fixture, and the membrane body is directly wrapped around the battery cell to complete the battery cell coating operation. The operation is convenient and the effect is high. In addition, after the battery cell is coated, it leaves the coating mechanism 1 along with the fixture. The fixture carrying the membrane body and the battery cell can continuously flow to the coating mechanism 1 for continuous coating operation, which improves the battery cell coating efficiency and is suitable for large-scale battery cell coating processing.

[0047] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0048] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A battery cell coating apparatus, comprising a fixture that moves between multiple workstations, the fixture being used to carry a membrane body and battery cells, the battery cells being stacked on the membrane body, characterized in that, It also includes a coating mechanism, which comprises: A flipping assembly includes a clamping member and a flipping member. The clamping member is used to clamp the membrane body, and the driving end of the flipping member is connected to the clamping member to drive the clamping member to rotate around the battery cell. The flipping component includes: a flipping frame; a flipping drive component connected to the flipping frame; and a flipping connecting arm, one end of which is connected to the flipping drive component, the other end of which is connected to the clamping component, and the length direction of the flipping connecting arm is set at an angle to the rotation axis direction of the drive end of the flipping drive component. The width direction of the battery cell is consistent with the conveying direction of the fixture, and the battery cell is disposed near one edge of the membrane body, the membrane body including a Mylar membrane; The flip-connecting arm includes a telescopic arm; The coating mechanism further includes a coating linear module, the drive end of which moves along the conveying direction of the fixture and is connected to the flipping component; The coating mechanism is provided in two sets, which are arranged at intervals along the conveying direction perpendicular to the fixture, and a coating channel is formed between the two sets of coating mechanisms for the fixture to pass through; it also includes an adjusting linear module, the driving end of which moves along the conveying direction perpendicular to the fixture and is connected to the coating mechanism. The coating mechanism further includes a lifting frame and a lifting linear module. The lifting frame is connected to the coating linear module, and the drive end of the lifting linear module moves up and down and is connected to the lifting frame.

2. The cell coating device according to claim 1, characterized in that, The clamping components include multiple clamping components, and the flipping component further includes a mounting arm. The mounting arm is connected to the flipping connecting arm, and the multiple clamping components are connected to the mounting arm along a conveying direction perpendicular to the fixture.

3. The cell coating device according to claim 1, characterized in that, It also includes a scale, the length direction of which is consistent with the movement direction of the drive end of the adjustment linear module, and is spaced apart from the adjustment linear module.

4. The cell coating device according to claim 1, characterized in that, The clamping component includes a gripper cylinder, and the gripping surface of the gripper cylinder is provided with a flexible layer.

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