Battery cell assembly line

Abstract

The utility model discloses a battery cell assembly line and relates to the field of battery cell production equipment. The battery cell assembly line comprises an X-ray detection module, a tab welding module, a film coating module, a shell entering module, a top cover tab welding module, a top cover shell pre-welding module and a top cover shell final welding module which are connected in sequence. The battery cell assembly line provided by the utility model has the characteristics of small occupied area, low production cost and high production efficiency.

Description

Technical Field

[0001] The utility model relates to the field of battery cell production equipment, and in particular to a battery cell assembly line. Background Art

[0002] In the field of lithium battery production, after the stacked battery cells are prepared, they need to undergo a series of treatments including tab welding and shell insertion in different process modules to complete the assembly of the battery cells.

[0003] Currently, different process modules are usually arranged at intervals on the market, and then conveyor belts or double-speed chain material conveying platforms are used to realize the transportation of battery cells between adjacent process modules.

[0004] Since different process modules are independent of each other, occupy too much floor space, and the transportation distance between adjacent workstations is too long, the production cost is too high and the production efficiency is too low. Utility Model Content

[0005] The utility model aims to provide a battery core assembly line, which has the characteristics of small footprint, low production cost and high production efficiency.

[0006] The embodiment of the utility model provides a technical solution:

[0007] A battery cell assembly line comprises an X-ray detection module, a tab welding module, a film coating module, a shell insertion module, a top cover tab welding module, a top cover shell pre-welding module and a top cover shell final welding module which are connected in sequence.

[0008] In an optional embodiment, the battery cell assembly line further includes a first conveyor line, which extends from the X-ray detection module to the tab welding module and is used to convey the material on the X-ray detection module to the tab welding module.

[0009] In an optional embodiment, part of the first conveyor line is laid on the X-ray detection module, and the remaining part is laid on the tab welding module.

[0010] In an optional embodiment, the battery cell assembly line further includes a first gantry robot, which is used to transport materials on the tab welding module to the coating module, and / or,

[0011] The first gantry manipulator is used to transport the materials on the film coating module to the shell entry module.

[0012] In an optional embodiment, the battery cell assembly line further includes a second gantry robot, and the second gantry robot is used to transport materials on the shell entry module to the top cover tab welding module.

[0013] In an optional embodiment, the battery cell assembly line further includes a first multi-axis robot, which is used to transport materials on the top cover tab welding module to the top cover shell pre-welding module.

[0014] In an optional embodiment, the first multi-axis manipulator is disposed on the top cover shell pre-welding module.

[0015] In an optional embodiment, the battery cell assembly line further includes a second multi-axis manipulator, and the second multi-axis manipulator is used to transport materials on the top cover shell pre-welding module to the top cover shell final welding module.

[0016] In an optional embodiment, the second multi-axis manipulator is disposed on the top cover shell pre-welding module.

[0017] In an optional embodiment, at least one output end of the X-ray detection module, the pole tab welding module, the coating module, the shell entry module, the top cover pole tab welding module, the top cover shell pre-welding module and the top cover shell final welding module is provided with a rejection sub-module, and the rejection sub-module is used to detect and reject unqualified materials output by the corresponding module.

[0018] Compared with the prior art, the battery cell assembly line provided by the utility model sequentially connects the X-ray detection module, the tab welding module, the film encapsulation module, the shell entry module, the top cover tab welding module, the top cover shell pre-welding module and the top cover shell final welding module, and integrates them into an integral structure, which greatly reduces the footprint, and the battery cells can be transferred between adjacent modules without spacing, which is more efficient and has lower transfer costs. Therefore, the battery cell assembly line provided by the utility model has the following beneficial effects: smaller footprint, lower production costs and higher production effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic diagram of the structure of a battery cell assembly line provided in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A magnified schematic diagram of the middle A area;

[0022] Figure 3 for Figure 1 A magnified schematic diagram of the middle B area;

[0023] Figure 4 for Figure 1 Enlarged schematic diagram of the middle C area;

[0024] Figure 5 for Figure 1 A magnified schematic diagram of region D in the middle.

[0025] Icons: 100-battery cell assembly line; 110-X-ray inspection module; 111-automatic loading device; 115-first conveyor line; 120-ear tab welding module; 125-first gantry robot; 130-encapsulation module; 140-shell entry module; 145-second gantry robot; 150-top cover ear welding module; 151-second conveyor line; 155-first multi-axis robot; 160-top cover shell pre-welding module; 165-second multi-axis robot; 170-top cover shell final welding module; 171-automatic unloading device. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships that are usually understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0030] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" 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 an indirect connection 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 according to specific circumstances.

[0032] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings.

[0033] Example

[0034] See also Figure 1 , Figure 1 Shown is a schematic structural diagram of a battery cell assembly line 100 provided in this embodiment.

[0035] The battery cell assembly line 100 provided in this embodiment includes an X-ray detection module 110, a tab welding module 120, a coating module 130, a shell entry module 140, a top cover tab welding module 150, a top cover shell pre-welding module 160 and a top cover shell final welding module 170 which are sequentially connected to form an integrated structure.

[0036] The functions of the X-ray detection module 110 include detecting the alignment of the battery cell stacking; the functions of the tab welding module 120 include assembling spacers, attaching protective glue to the base of the tab, installing the retaining frame and the side fixing plate, as well as ultrasonic welding of the tab and completing the tab cutting; the functions of the coating module 130 include rotating PP film coating of the battery cell, hot-melt edge sealing and vacuum cleaning of the battery cell.

[0037] The functions of the shell entry module 140 include inserting the battery cell into the shell and completing the battery cell short-circuit test; the function of the top cover pole ear welding module 150 includes welding between the pole ear and the top cover and dust removal with a brush; the function of the top cover shell pre-welding module 160 includes punching and pre-welding between the top cover and the shell; the function of the top cover shell final welding module 170 includes using a linear four-channel method to complete the final welding between the top cover and the shell.

[0038] In this embodiment, in order to ensure the yield rate, a rejection sub-module (not shown in the figure) is provided at the output end of each process module, that is, the output end of the X-ray detection module 110, the pole ear welding module 120, the coating module 130, the shell entry module 140, the top cover pole ear welding module 150, the top cover shell pre-welding module 160 and the top cover shell final welding module 170 are each provided with a rejection sub-module, and the rejection sub-module is used to detect and reject unqualified materials after the corresponding process module action is completed.

[0039] Preferably, the rejection submodule in this embodiment is provided with a CCD detection unit and a discharge unit. The CCD detection unit is used to detect unqualified materials, and the discharge unit is used to reject unqualified materials to prevent unqualified materials from flowing into the next process module.

[0040] It is understandable that the rejection submodules set in different process modules have different criteria for determining unqualified materials. For example, the rejection submodule set at the output end of the X-ray detection module 110 will determine the battery cells with unqualified alignment as unqualified materials and reject them, and the rejection submodule set at the output end of the tab welding module 120 will determine the battery cells with tab welding defects as unqualified materials and reject them.

[0041] The material in this embodiment refers to the entire battery cell after being processed by any process module. For example, the battery cell processed by the tab welding module 120 is called material, the battery cell with a film coated on the surface after being processed by the coating module 130 is also called material, and the overall structure composed of the battery cell and the shell after being processed by the shell module 140 is also called material.

[0042] In this embodiment, an automatic loading device 111 is provided at the loading end of the X-ray detection module 110 , and the automatic loading device 111 can transport the stacked cells to the X-ray detection module 110 .

[0043] Please refer to Figure 2 , Figure 2 Shown Figure 1 A magnified schematic diagram of area A in the middle.

[0044] Regarding the material transfer between the X-ray inspection module 110 and the tab welding module 120 , in this embodiment, the battery cell assembly line 100 further includes a first conveyor line 115 , which extends from the X-ray inspection module 110 to the tab welding module 120 .

[0045] Part of the first conveyor line 115 is laid on the X-ray inspection module 110, and the remaining part is laid on the tab welding module 120. In actual application, the automatic feeding device 111 conveys the battery cells to the starting end of the first conveyor line 115 on the X-ray inspection module 110. When the first conveyor line 115 drives the battery cells to move toward the tab welding module 120, the X-ray inspection module 110 completes the inspection of the battery cells.

[0046] After the battery cell is driven by the first conveyor line 115 and reaches the input end of the tab welding module 120 from the X-ray detection module 110, it continues to move toward the output end of the tab welding module 120 driven by the first conveyor line 115. During this process, the tab welding module 120 completes the processing of the battery cell, including spacer assembly, attachment of tab root protective glue, installation of retaining frame and side fixing plate, as well as tab ultrasonic welding and tab cutting.

[0047] Please refer to Figure 3 , Figure 3 Shown Figure 1 A magnified schematic diagram of area B.

[0048] For the material transfer between the tab welding module 120 and the coating module 130, the cell assembly line 100 provided in this embodiment further includes a first gantry manipulator 125, which is used to transport the material on the tab welding module 120 to the coating module 130. In addition, in this embodiment, the material transfer between the coating module 130 and the shell entry module 140 is also completed by the first gantry manipulator 125.

[0049] In actual application, the battery cell processed by the tab welding module 120 arrives at the end of the first conveyor line 115, the first gantry manipulator 125 grabs the battery cell and rotates 90 degrees, and then drives the battery cell into the coating module 130 for coating. After the coating is completed, the battery cell is transported to the shell entry module 140 for shell entry. It can be understood that the shell entry module 140 is equipped with a shell loading device for loading the shell.

[0050] Please refer to Figure 4 , Figure 4 Shown Figure 1 Enlarged schematic diagram of area C in the middle.

[0051] For material transfer between the shell entry module 140 and the top cover tab welding module 150 , the battery cell assembly line 100 provided in this embodiment further includes a second gantry robot 145 , which is used to transport materials on the shell entry module 140 to the top cover tab welding module 150 .

[0052] In fact, in this embodiment, a second conveyor line 151 is laid on the top cover tab welding module 150, and the second gantry manipulator 145 transfers the overall structure of the battery cell and the shell after being processed by the shell entry module 140 to the starting end of the second conveyor line 151 on the top cover tab welding module 150, and then the second conveyor line 151 carries the material to the end close to the top cover shell pre-welding module 160. In this process, the top cover tab welding module 150 completes the welding of the battery cell tab and the top cover.

[0053] Please refer to Figure 5 , Figure 5 Shown Figure 1 A magnified schematic diagram of region D in the middle.

[0054] For material transfer between the top cover tab welding module 150 and the top cover shell pre-welding module 160 , the battery cell assembly line 100 provided in this embodiment also includes a first multi-axis robot 155 , which is used to transport materials on the top cover tab welding module 150 to the top cover shell pre-welding module 160 .

[0055] Specifically, the first multi-axis manipulator 155 is disposed on the top cover shell pre-welding module 160. Preferably, the first multi-axis manipulator 155 in this embodiment is a four-axis manipulator. When the material after the welding of the tab and the top cover moves to the end of the second conveyor line 151, the first multi-axis manipulator 155 transfers the material to the top cover shell pre-welding module 160 for pre-welding between the top cover and the shell.

[0056] For material transfer between the top cover shell pre-welding module 160 and the top cover shell final welding module 170 , the battery cell assembly line 100 provided in this embodiment also includes a second multi-axis robot 165 , which is used to transport materials on the top cover shell pre-welding module 160 to the top cover shell final welding module 170 .

[0057] Similarly, the second multi-axis manipulator 165 is also arranged on the top cover shell pre-welding module 160, and the second multi-axis manipulator 165 is also a four-axis manipulator. In fact, the first multi-axis manipulator 155 is arranged at the input end of the top cover shell pre-welding module 160, and the second multi-axis manipulator 165 is arranged at the output end of the top cover shell pre-welding module 160.

[0058] In this embodiment, an automatic unloading device 171 is further provided at the output end of the top cover shell final welding module 170 , and the automatic unloading device 171 is used to transport the materials that have completed the final welding of the top cover and the shell away from the battery cell assembly line 100 .

[0059] In summary, the battery cell assembly line 100 provided in this embodiment forms an integral structure by sequentially connecting the X-ray detection module 110, the pole tab welding module 120, the coating module 130, the shell entry module 140, the top cover pole tab welding module 150, the top cover shell pre-welding module 160 and the top cover shell final welding module 170, and has the characteristics of smaller footprint, lower production cost and higher production effect.

[0060] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery cell assembly line, characterized in that: It comprises an X-ray detection module (110), a pole ear welding module (120), a film encapsulation module (130), a shell entry module (140), a top cover pole ear welding module (150), a top cover shell pre-welding module (160) and a top cover shell final welding module (170) which are connected in sequence.

2. The battery cell assembly line according to claim 1, characterized in that: The battery cell assembly line (100) further comprises a first conveyor line (115), wherein the first conveyor line (115) extends from the X-ray detection module (110) to the tab welding module (120) and is used to convey materials on the X-ray detection module (110) to the tab welding module (120).

3. The battery cell assembly line according to claim 2, characterized in that: A portion of the first conveyor line (115) is laid on the X-ray detection module (110), and a remaining portion is laid on the tab welding module (120).

4. The battery cell assembly line according to claim 1, characterized in that: The battery cell assembly line (100) further comprises a first gantry robot (125), wherein the first gantry robot (125) is used to transport materials on the tab welding module (120) to the coating module (130), and / or, The first gantry robot (125) is used to transport materials on the film coating module (130) to the shell entry module (140).

5. The battery cell assembly line according to claim 1, characterized in that: The battery cell assembly line (100) further comprises a second gantry robot (145), wherein the second gantry robot (145) is used to transport materials on the shell entry module (140) to the top cover tab welding module (150).

6. The battery cell assembly line according to claim 1, characterized in that: The battery cell assembly line (100) further comprises a first multi-axis robot (155), wherein the first multi-axis robot (155) is used to transport materials on the top cover tab welding module (150) to the top cover shell pre-welding module (160).

7. The battery cell assembly line according to claim 6, characterized in that: The first multi-axis robot (155) is arranged on the top cover shell pre-welding module (160).

8. The battery cell assembly line according to claim 1, characterized in that: The battery cell assembly line (100) further includes a second multi-axis robot (165), which is used to transport materials on the top cover shell pre-welding module (160) to the top cover shell final welding module (170).

9. The battery cell assembly line according to claim 8, characterized in that: The second multi-axis robot (165) is arranged on the top cover shell pre-welding module (160).

10. The battery cell assembly line according to claim 1, characterized in that: At least one output end of the X-ray detection module (110), the tab welding module (120), the film encapsulation module (130), the shell entry module (140), the top cover tab welding module (150), the top cover shell pre-welding module (160) and the top cover shell final welding module (170) is provided with a rejection submodule, and the rejection submodule is used to detect and reject unqualified materials output by the corresponding module.

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