Battery cell pre-edge-closing structure and pre-edge-closing machine

Abstract

The utility model belongs to the technical field of battery cell processing, and particularly relates to a battery cell pre-edge-closing structure and a pre-edge-closing machine, which comprise a rotating component, a guide limiting component and an edge-closing piece, a first connecting surface is arranged at one side end of the rotating part; the at least one guide limiting part is arranged in a surrounding manner along the first connecting surface; the number of the edge closing piece is at least one. Machining inner cavities are formed among all the edge closing pieces; one end of each edge closing piece is movably connected to the corresponding guiding and limiting component. According to the edge pre-closing device, the operation efficiency of edge pre-closing can be improved, and the cleanliness of the structure is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery core processing, and in particular relates to a battery core pre-edge trimming structure and a pre-edge trimming machine. Background Art

[0002] There are many types of battery cell structures, one of which is a cylindrical cell formed by alternating between several diaphragms and aluminum films. When the battery cell is not flattened, the end of the battery cell is uneven, and may have flanges and a large number of burrs, and there is also a certain degree of outward deviation in concentricity relative to the battery cell body. In order to facilitate the subsequent welding of the collector plate at the end of the battery cell and ensure the welding quality, the end of the battery cell needs to be flattened. At the same time, because the outer wall of the battery cell and the inner wall of the battery shell have very precise assembly dimensions, the battery cell that has not been flattened will also cause scratches on the battery shell when it is directly inserted into the shell, so flattening the end of the battery cell is particularly necessary. With the increasing demand for lithium-ion batteries, the design of the pre-edge-cutting mechanism in the battery cell production process needs to be significantly improved.

[0003] However, some existing pre-trimming structures have defects: 1. The current pre-trimming mechanism mainly uses special molds, and different sizes of molds need to be designed for different types of battery cells, which is complicated and time-consuming to operate; 2. The current pre-trimming equipment is a closed fixture. The powder that falls off during the pre-trimming of the battery cells cannot be discharged and will accumulate in the fixture, affecting the subsequent trimming effect and battery cell performance. Utility Model Content

[0004] The purpose of the present invention is to provide a battery cell pre-edge finishing structure to address the deficiencies of the prior art, so as to solve the technical problem that the prior art has a narrow scope of applicable battery cell pre-edge finishing operations.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A battery cell pre-edge trimming structure includes a rotating component, a guide and limiting component, and an edge trimming component; a first connecting surface is provided at one side end of the rotating component; there is at least one guide and limiting component, which is arranged around the first connecting surface; there is at least one edge trimming component; and a processed inner cavity is provided between all the edge trimming components; one end of the edge trimming component is movably connected to the corresponding guide and limiting component.

[0007] Preferably, the guide and limiting component is a guide and limiting groove recessed from the first connecting surface toward the rotating component body; and the edge trimming piece is connected to the inside of the guide and limiting groove.

[0008] Preferably, the guide limiting groove is extended along the horizontal direction of the first connecting surface.

[0009] Preferably, an assembly gap is provided between two adjacent edge trimming pieces; one side of the assembly gap is communicated with the processing inner cavity; and the other side of the assembly gap is communicated with the guide and limiting component.

[0010] Preferably, the edge trimming part includes a first edge trimming portion and a second edge trimming portion; and the first edge trimming portion is movably connected to the guide and limiting component; the first edge trimming portion is used to contact the end of the battery cell body; the second edge trimming portion is obliquely arranged at a side end of the first edge trimming portion away from the guide and limiting component; the second edge trimming portion is used to attach to the edge of the end of the battery cell body.

[0011] Preferably, the edge trimming piece further includes a movable connection portion; one side end of the movable connection portion is connected to a side end of the first edge trimming portion away from the second edge trimming portion; the other side end of the movable connection portion is tightly arranged on the guide limiting component.

[0012] Preferably, the processing inner cavity includes a first cavity and a second cavity arranged side by side; the first cavity is communicated with the guide and limiting component; and the second cavity is used to place the discharge core body.

[0013] Preferably, the battery cell pre-edge finishing structure further includes a dust suction component; the dust suction component is arranged at the side end of the rotating component, and the dust suction direction of the dust suction component is arranged toward the processing inner cavity and / or the guide limiting component.

[0014] Preferably, the rotating component is a circular or square rotating disk.

[0015] The utility model also discloses a pre-edge trimming machine, comprising the battery cell pre-edge trimming structure described above.

[0016] The beneficial effect of the present invention is that the technical solution adopts multiple groups of guiding and limiting components and edge trimming components to cooperate with each other to form an open pre-edge trimming structure, which is beneficial to improving the effect of pre-edge trimming, and can effectively discharge the waste generated by the friction between the edge trimming components and the battery cell body, thereby improving the operational efficiency of pre-edge trimming and ensuring the cleanliness of the structure; the edge trimming components are movably arranged on the guiding and limiting components to increase or reduce the accommodating volume of the processing cavity, so that it can adapt to the processing of battery cell bodies of more different specifications, thereby solving the problem of spending a lot of time to replace the structure when pre-trimming different battery cells, and reducing the cost of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following will refer to the attached Figures 1 to 4 To describe the features, advantages and technical effects of exemplary embodiments of the present invention.

[0018] Figure 1This is a structural diagram of a battery cell pre-edge structure according to an embodiment of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the battery cell pre-edge closing structure in operation state according to one embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the edge trimming component of the battery cell pre-edge trimming structure according to one embodiment of the present invention;

[0021] Figure 4 This is a structural diagram of a battery cell pre-edge structure according to an embodiment of the present invention.

[0022] In the figure: 1-rotating component; 11-first connecting surface; 2-guide limiting component; 21-guide limiting groove; 3-edge finishing component; 31-first edge finishing part; 32-second edge finishing part; 33-first connecting part; 34-second connecting part; 35-movable connecting part; 4-processing inner cavity; 41-first cavity; 42-second cavity; 5-battery cell body; 6-assembly gap; 7-dust suction component; 71-adsorption guide; 711-input section; 712-output section. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0024] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0025] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or multiple situations exist. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0027] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0028] The following is combined with Figures 1 to 4 The present invention is further described in detail, but is not intended to limit the present invention.

[0029] like Figure 1 and 2 As shown, in one embodiment of the present utility model, the battery cell pre-edge-finishing structure comprises a rotating part 1, a guide and limiting part 2 and an edge-finishing part 3; one side end of the rotating part 1 is provided with a first connecting surface 11; the number of the guide and limiting parts 2 is at least one, and they are arranged around the first connecting surface 11; the number of the edge-finishing parts 3 is at least one; and a processing cavity 4 is provided between all the edge-finishing parts 3; the processing cavity 4 is used to make the battery cell body 5 attached and in contact; one end of the edge-finishing part 3 is movably connected to the corresponding guide and limiting part 2 to adjust the accommodation volume of the processing cavity 4.

[0030] The technical solution of the present invention adopts multiple groups of guiding and limiting components and edge trimming components to cooperate with each other to form an open pre-edge trimming structure, which is beneficial to improving the effect of pre-edge trimming, and can effectively discharge the waste generated by the friction between the edge trimming components and the battery cell body, thereby improving the operational efficiency of pre-edge trimming and ensuring the cleanliness of the structure; the edge trimming components are movably arranged on the guiding and limiting components to increase or reduce the accommodating volume of the processing cavity, so that it can adapt to the processing of battery cell bodies of more different specifications, thereby solving the problem of spending a lot of time to replace the structure when pre-trimming different battery cells, and reducing the cost of equipment.

[0031] Specifically, in some embodiments, the rotating member 1 is a circular or square rotating disk, wherein the circular or square rotating disk is driven by a rotary motor. That is, when the battery cell body moves into the processing cavity 4, the rotary motor drives the circular or square rotating disk to rotate at 500-700 rpm to perform pre-edge processing on the end tabs and other parts of the battery cell body 5.

[0032] Specifically, in some embodiments, Figure 1 and 2 As shown, the guide and limiting component 2 is a guide and limiting groove 21 that is recessed from the first connecting surface 11 toward the main body of the rotating component 1; the edge trimming piece 3 is connected to the inside of the guide and limiting groove 21. This structure can improve the convenience of processing the guide and limiting component 2 through the recessed guide and limiting groove 21, and can also ensure the stability of the installation and fixation of the edge trimming piece 3. Among them, the guide and limiting groove 21 is extended along the horizontal direction of the first connecting surface 11. That is to say, according to the size of the battery body 5, all the edge trimming pieces 3 can simultaneously expand or contract toward the central axis or edge position of the rotating component 1 to increase or reduce the volume of the processing cavity, so as to adapt to the processing of more different specifications of battery body, thereby solving the problem of taking a lot of time to replace the structure when pre-trimming different battery cells, and reducing the cost of equipment; in addition, the guide and limiting groove 21 also has a certain storage and guiding effect on the dust and other waste generated by the pre-trimming, so as to realize the discharge function of the powder dropped during the pre-trimming process of the battery cell, which is beneficial to improve the trimming effect and battery cell performance.

[0033] Specifically, in some embodiments, Figure 1 and 2 As shown, an assembly gap 6 is provided between two adjacent edge trimming members 3; one side of the assembly gap 6 communicates with the processing cavity 4; the other side of the assembly gap 6 communicates with the guide and limit member 2 (the middle guide and limit groove 21). In other words, the formed assembly gap 6 effectively discharges dust and other impurities within the processing cavity 4, thereby improving the cleanliness of the structure.

[0034] Specifically, in some embodiments, Figure 2 and 4As shown, the edge trimming member 3 includes a first edge trimming portion 31 and a second edge trimming portion 32. The first edge trimming portion 31 is movably connected to the guide and limit member 2 (the middle guide and limit groove 21). The first edge trimming portion 31 is used to contact the end of the battery cell body 5. The second edge trimming portion 32 is tilted and disposed at a side of the first edge trimming portion 31 away from the guide and limit member 2. The second edge trimming portion 32 is used to adhere to the edge of the end of the battery cell body 5. This structure, through the first edge trimming portion 31 contacting and limiting the end of the battery cell body 5, combined with the second edge trimming portion 32 adhering to the edge of the end of the battery cell body 5 to perform the edge trimming operation, can prevent the battery cell body 5 from shifting, which could affect the stability of the pre-trimming operation.

[0035] Specifically, in some embodiments, Figure 2 and 3 As shown, the edge trimming member 3 further includes a movable connection portion 35; one side end of the movable connection portion 35 is connected to the side end of the first edge trimming portion 31 away from the second edge trimming portion 32; the other side end of the movable connection portion 35 is closely disposed in the guide limiting component 2 (the middle guide limiting groove 21). Figure 3 As shown, the edge trimming member 3 further includes a first connecting portion 33 and a second connecting portion 34. The second connecting portion 34 is connected to the first edge trimming portion 31 and the movable connecting portion 35 at both ends. The first connecting portion 33 is connected to the first edge trimming portion 31 and the second edge trimming portion 32 at both ends. Furthermore, the first connecting portion 33 is arc-shaped, and the second connecting portion 34 is arc-shaped. This structure effectively improves the edge trimming effect by utilizing multiple sets of identical overall curvatures.

[0036] Specifically, in some embodiments, Figure 1 and 4 As shown, the processing inner cavity 4 includes a first cavity 41 and a second cavity 42 arranged side by side; the first cavity 41 is connected to the guide limit component 2 (middle guide limit groove 21); the second cavity 42 is used to place the battery cell body 5. The inner diameter of the first cavity 41 is smaller than the inner diameter of the second cavity 42. In other words, by forming a T-shaped processing inner cavity 4, the support stability of the battery cell body 5 can be guaranteed, and the first cavity 41 can improve the speed of recycling waste such as dust. Further, as Figure 4 As shown, the first cavity 41 is formed between all the movable connection parts 35 ; the second cavity 42 is formed between all the first edge trimming parts 31 and all the second edge trimming parts 32 .

[0037] Specifically, in some embodiments, Figure 1 and 4As shown, the cell pre-edge structure further includes a dust collecting component 7; the dust collecting component 7 is arranged at the side end of the rotating component 1, and the dust collecting direction of the dust collecting component 7 is arranged toward the processing cavity 4 and / or the guide limit component 2. Figure 4 As shown, the dust collection component 7 includes at least one suction guide 71, which is arranged along the circumference of the rotating component 1 and is oriented toward the processing cavity 4. Furthermore, the suction guide 71 includes an interconnected input section 711 and an output section 712. The inner diameter of the input section 711 is larger than that of the output section 712, which is connected to the dust collection motor. In other words, the wide inlet and narrow outlet configuration improves dust collection speed and efficiency, thereby ensuring the cleanliness of the structure.

[0038] The present invention also provides a pre-edge trimming machine, which includes a cell pre-edge trimming structure. The specific structure of the cell pre-edge trimming structure is described in the above-mentioned embodiments. Since the present pre-edge trimming machine adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here. The pre-edge trimming machine also includes a clamping structure for positioning and clamping the cell body 5; further, the clamping structure can be a fixed clamping mechanism or a rotating clamping mechanism (the clamping portion is disposed on the rotating portion).

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0040] Based on the disclosure and teachings of the above description, those skilled in the art will be able to make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions, or modifications made by those skilled in the art based on the present invention fall within the scope of protection of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation on the present invention.

Claims

1. A battery cell pre-edge structure, characterized by: It includes a rotating part, a guide and limiting part and an edge trimming part; a first connecting surface is provided at one side end of the rotating part; there is at least one guide and limiting part, which is arranged around the first connecting surface; there is at least one edge trimming part; and a processing inner cavity is provided between all the edge trimming parts; one end of the edge trimming part is movably connected to the corresponding guide and limiting part.

2. The battery cell pre-edge structure according to claim 1, characterized in that: The guide and limiting component is a guide and limiting groove that is recessed from the first connecting surface toward the rotating component body; and the edge trimming piece is connected to the inside of the guide and limiting groove.

3. The battery cell pre-edge structure according to claim 2, characterized in that: The guide limiting groove is extended along the horizontal direction of the first connecting surface.

4. The battery cell pre-edge structure according to claim 1 or 2, characterized in that: An assembly gap is provided between two adjacent edge trimming pieces; one side of the assembly gap is communicated with the processing inner cavity; and the other side of the assembly gap is communicated with the guide and limiting component.

5. The battery cell pre-edge structure according to claim 1, characterized in that: The edge trimming part includes a first edge trimming portion and a second edge trimming portion; and the first edge trimming portion is movably connected to the guide and limiting component; the first edge trimming portion is used to contact the end of the battery cell body; the second edge trimming portion is obliquely arranged at a side end of the first edge trimming portion away from the guide and limiting component; the second edge trimming portion is used to attach to the edge of the end of the battery cell body.

6. The battery cell pre-edge structure according to claim 5, characterized in that: The edge trimming piece also includes a movable connection part; one side end of the movable connection part is connected to the side end of the first edge trimming part away from the second edge trimming part; the other side end of the movable connection part is tightly arranged on the guide limiting component.

7. The battery cell pre-edge structure according to claim 1, characterized in that: The processing inner cavity includes a first cavity and a second cavity arranged side by side; the first cavity is communicated with the guide and limiting component; and the second cavity is used to place the discharge core body.

8. The battery cell pre-edge structure according to claim 1, characterized in that: The battery cell pre-edge finishing structure further includes a dust suction component; the dust suction component is arranged at the side end of the rotating component, and the dust suction direction of the dust suction component is arranged toward the processing inner cavity and / or the guide limiting component.

9. The battery cell pre-edge structure according to claim 1, characterized in that: The rotating component is a circular or square rotating disk.

10. A pre-edge finishing machine, characterized in that: The present invention comprises the battery cell pre-edge structure according to any one of claims 1 to 9.

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