Static electricity removing assembly and lamination device

Abstract

The utility model provides a static eliminating assembly and a lamination device. The static electricity removing assembly comprises a push plate used for flattening the diaphragm; the driving part is connected with one end of the push plate, and the driving part is used for driving the push plate to move in the length direction of the diaphragm; and the static electricity eliminating piece is arranged on the push plate. According to the utility model, the problem that the diaphragm is easy to wrinkle in the production process of the laminated battery cell in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy technology field, specifically, relate to a static electricity expelling subassembly and lamination device. BACKGROUND

[0002] As a high energy density rechargeable battery, with the growth of demand for batteries in new energy vehicles and 3C electronic devices, the market for secondary batteries is also expanding, and is developing towards large-scale and high energy density. The lamination process in the production process of secondary batteries is to make the positive electrode, negative electrode and separator of the battery into a battery through lamination, and then to perform liquid injection, formation and other processes to finally produce finished batteries. In the battery production process, lamination is to align the components such as electrode sheets and separators, cut the components such as electrode sheets and separators into a specified size through die cutting, and finally stack multiple components such as electrode sheets and separators through a laminating machine to form the positive electrode, negative electrode and separator of the battery to meet the subsequent liquid injection, formation and other processes. However, the components such as electrode sheets and separators are prone to static electricity during lamination, which causes the separator to wrinkle, affects the lamination accuracy, and even causes the electrode sheets to contact each other, resulting in the occurrence of defective products and affecting the yield of products.

[0003] As can be seen from the above, there is a problem of easy wrinkling of the separator in the lamination cell production process in the prior art. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the utility model is to provide a static electricity expelling subassembly and lamination device to solve the problem of easy wrinkling of the separator in the lamination cell production process in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a static electricity expelling subassembly is provided, which comprises: a push plate for flattening the separator; a driving member connected to one end of the push plate, the driving member being used to drive the push plate to move along the length direction of the separator; and a static electricity eliminating member provided on the push plate.

[0006] Further, the static electricity eliminating member comprises: an ion generating member for generating ion flow; a main body part detachably connected to the push plate, the ion generating member being arranged in the main body part, and at least one side of the main body part being provided with a through hole for releasing the ion flow.

[0007] Further, the through hole is a plurality of through holes, and the plurality of through holes are arranged at intervals along the length direction of the main body part.

[0008] Further, the ion generating member is a plurality of ion generating members, and the plurality of ion generating members are arranged one by one corresponding to the plurality of through holes.

[0009] Further, the static electricity eliminating member is arranged on the upper surface of the push plate away from the separator, and the static electricity eliminating member is detachably connected to the push plate.

[0010] Furthermore, the electrostatic discharge assembly also includes a connector, the push plate is provided with a first connecting hole, the main body is provided with a second connecting hole, and the first connecting hole and the second connecting hole correspond to and communicate with each other; the connector extends into the first connecting hole and the second connecting hole to realize the connection between the push plate and the main body.

[0011] Furthermore, the static eliminator is positioned adjustablely on the push plate.

[0012] Furthermore, the electrostatic discharge assembly also includes a protective component, which is located at the end of the connector away from the push plate.

[0013] Furthermore, the electrostatic discharge assembly also includes a sensing element, and the driving member has a sensing element disposed on at least one side facing the push plate. The sensing element is used to detect the distance between the driving member and the electrode plate below the diaphragm.

[0014] According to another aspect of the present invention, a stacking device is provided, comprising: the above-mentioned electrostatic evacuation assembly; a frame, wherein there are at least two electrostatic evacuation assemblies, and the plurality of electrostatic evacuation assemblies are arranged vertically at intervals on the frame, and the electrostatic evacuation assemblies are used to perform Z-shaped folding of the diaphragm.

[0015] The electrostatic discharge assembly of this utility model includes a pusher plate, a driving component, and an electrostatic eliminator. The pusher plate is used to flatten the diaphragm. The driving component is connected to one end of the pusher plate and is used to drive the pusher plate to move along the length of the diaphragm. The electrostatic eliminator is set on the pusher plate. The pusher plate is driven to move on the diaphragm by the driving component, and the pusher plate flattens the diaphragm. In this process, the electrostatic eliminator set on the pusher plate can eliminate the static electricity between the pusher plate and the diaphragm, so as to prevent the static electricity generated by repeated friction between the pusher plate and the diaphragm from causing the diaphragm to be attracted and wrinkled when the pusher plate moves. This ensures the product qualification rate and solves the problem of easy wrinkling of the diaphragm in the production process of stacked cells in the prior art. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the stacking device in a specific embodiment of the present invention is shown; and

[0018] Figure 2 This invention provides a schematic diagram of the electrostatic discharge assembly from one angle in a specific embodiment of the present invention.

[0019] Figure 3This invention provides a schematic diagram of the electrostatic discharge assembly from another angle in a specific embodiment of the present invention.

[0020] Figure 4 A schematic diagram of the ion generator in a specific embodiment of the present invention is shown.

[0021] The above figures include the following reference numerals:

[0022] 10. Push plate; 20. Drive component; 30. Static eliminator; 31. Ion generator; 32. Main body; 321. Through hole; 40. Connector; 100. Diaphragm; 200. Electrode; 300. Tab. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] To address the problem of diaphragm wrinkling during the production of laminated battery cells in the prior art, this invention provides an electrostatic discharge assembly and a lamination device. The lamination device includes the electrostatic discharge assembly described below.

[0028] like Figures 1 to 3 As shown, the electrostatic discharge assembly includes a pusher plate 10, a drive member 20, and an electrostatic eliminator 30. The pusher plate 10 is used to flatten the diaphragm. The drive member 20 is connected to one end of the pusher plate 10 and is used to drive the pusher plate 10 to move along the length of the diaphragm. The electrostatic eliminator 30 is disposed on the pusher plate 10.

[0029] The pusher plate 10 is driven by the drive unit 20 to move on the diaphragm 100, and the pusher plate 10 flattens the diaphragm 100. In this process, the static elimination unit 30 set on the pusher plate 10 can eliminate the static electricity between the pusher plate 10 and the diaphragm 100, so as to prevent the pusher plate 10 from repeatedly rubbing against the diaphragm 100 and generating static electricity, which would cause the diaphragm 100 to be attracted and wrinkled when the pusher plate 10 moves, thus ensuring the product qualification rate.

[0030] like Figures 1 to 4 As shown, the static eliminator 30 includes an ion generator 31 and a main body 32. The ion generator 31 is used to generate an ion flow. The main body 32 is detachably connected to the push plate 10. The ion generator 31 is disposed inside the main body 32. At least one side of the main body 32 has a through hole 321 for releasing the ion flow.

[0031] Specifically, the length of the main body 32 is adapted to the length of the pusher plate 10, and the range of the through hole 321 can cover the entire pusher plate 10. Thus, when the ion flow generated by the ion generator 31 is released along the through hole 321, it can cover the entire pusher plate 10, so that the static electricity between the entire pusher plate 10 and the diaphragm 100 is completely eliminated. This avoids the diaphragm 100 at that location being adsorbed due to the failure to eliminate local static electricity, which would cause wrinkles in the diaphragm 100 and expose the electrode 200.

[0032] In this embodiment, the ion generator 31 includes a power supply, a resistor, and a generator body, both of which are connected to the power supply. Optionally, the power supply is located within the main body 32.

[0033] In this embodiment, there are multiple through holes 321, and the multiple through holes 321 are spaced apart at least along the length direction of the main body 32.

[0034] Specifically, the through holes 321 are arranged in a row at intervals along the length of the main body 32, and the ion flow range covers the pusher plate 10 or is greater than the pusher plate 10 by the multiple through holes 321 spaced apart. Optionally, the multiple through holes 321 are arranged in multiple rows on the main body 32, and the multiple rows are spaced apart.

[0035] In this embodiment, multiple through holes 321 are provided on the windward side of the main body 32. It should be noted that the windward side refers to the side of the main body 32 along the windward side. Figure 1 When the X direction moves on the diaphragm 100, the right side of the main body 32.

[0036] In this embodiment, the static eliminator 30 is disposed on one side of the pusher plate 10, and the entire static eliminator 30 forms an L-shaped structure. In use, the pusher plate 10 is placed on the diaphragm 100, and the drive member 20 drives the pusher plate 10 to move. Before the pusher plate 10 moves, the ion flow generated by the static eliminator 30 has been released through the through hole 321 onto the diaphragm 100 to be flattened. When the pusher plate 10 moves to flatten the diaphragm 100, the ion flow attached to the diaphragm 100 can neutralize the static electricity generated by the friction between the pusher plate 10 and the diaphragm 100, thereby preventing the diaphragm 100 from being attracted by static electricity and moving with the pusher plate 10, thus avoiding wrinkles.

[0037] In this embodiment, there are multiple ion generators 31, and each of the multiple ion generators 31 is provided in a one-to-one correspondence with a multiple through hole 321.

[0038] Specifically, the main body 32 has a receiving cavity, in which multiple ion generators 31 are disposed, and the multiple ion generators 31 are disposed corresponding to multiple through holes 321, ensuring that the ion flow can exert a sufficient effect. Optionally, the multiple ion generators 31 are snapped into the through holes 321, or are disposed in the through holes 321 by screws.

[0039] In another optional embodiment of this application, there is one ion generator 31, which is disposed in the receiving cavity, and the ion flow generated by the ion generator 31 flows out through a plurality of through holes 321.

[0040] In this embodiment, the push plate 10 has two surfaces, upper and lower, arranged opposite to each other in a first direction, wherein the first direction is... Figure 1 The Y direction shown is actually the thickness direction of the diaphragm 100. The upper surface of the pusher plate 10 is the surface of the pusher plate 10 that is away from the diaphragm 100 in the first direction; the static eliminator 30 is disposed on the upper surface of the pusher plate 10 and is detachably connected to the pusher plate 10.

[0041] Specifically, the static eliminator 30 is detachably connected to the push plate 10, which facilitates the assembly and maintenance of the static discharge assembly. During assembly, the static eliminator 30 is assembled first, followed by assembly with the push plate 10. Similarly, during maintenance, repair work can be completed quickly.

[0042] Optionally, in this embodiment, the main body 32 includes a housing and a sealing plate. The housing is a cuboid cavity structure with an opening on one side, and a sealing plate is provided at the opening. The sealing plate has a through hole 321, and the sealing plate is detachably connected to the main body 32. This method ensures a more accurate correspondence between the ion generator 31 and the through hole 321. Furthermore, it facilitates alignment for repair or replacement if one of the multiple ion generators 31 is damaged. The housing and the sealing plate can be connected by either a snap-fit ​​connection or screws.

[0043] like Figure 3 As shown, the electrostatic discharge assembly also includes multiple connectors 40, which are spaced apart.

[0044] Specifically, the push plate 10 is provided with a first connecting hole; the main body 32 is provided with a second connecting hole, and the first connecting hole and the second connecting hole correspond to and communicate with each other. The connector 40 extends into the first connecting hole and the second connecting hole to realize the connection between the push plate 10 and the main body 32. Optionally, both the first connecting hole and the second connecting hole are provided with internal threads. The connector 40 is provided with an external thread section that mates with the internal threads and an operating section. The diameter of the external thread section is smaller than the diameter of the operating section. The external thread section passes through the first connecting hole and the second connecting hole to realize the connection and fastening of the connector 40 between the push plate 10 and the main body 32.

[0045] In another optional embodiment of this application, the pusher plate 10 is a hollow cavity structure. The pusher plate 10 includes an upper sidewall and a lower sidewall disposed opposite to each other along a first direction, wherein the upper sidewall of the pusher plate 10 is the sidewall of the pusher plate 10 that is away from the diaphragm 100 in the first direction. A first connecting hole is provided through the upper sidewall of the pusher plate 10; a connector 40 extends into the first connecting hole and the second connecting hole to realize the connection between the pusher plate 10 and the main body 32, and the connector 40 is located in the hollow cavity of the pusher plate 10 (i.e., the connector 40 is located between the upper sidewall and the lower sidewall of the pusher plate 10). With this embodiment, the pusher plate 10 and the lower sidewall can be fitted to the diaphragm 100, thereby better flattening the diaphragm 100.

[0046] In another optional embodiment of this application, a first connecting hole is provided through the push plate 10, and the connector 40 extends into a second connecting hole after passing through the first connecting hole, with the operating section of the connector 40 located on the lower surface of the push plate 10. In this embodiment, when flattening the diaphragm 100, the push plate 10 needs to be tilted to ensure that the connector 40 and the diaphragm 100 are spaced apart, thus preventing the connector 40 from scratching the diaphragm 100.

[0047] Specifically, connector 40 is a screw.

[0048] In another optional embodiment of this application, when the operating section of the connector 40 is located on the lower surface of the push plate 10, the electrostatic discharge assembly further includes a protective member disposed at the end of the connector 40 away from the push plate 10.

[0049] Specifically, when there are multiple protective components, the protective components are silicone sleeves, and multiple protective components are correspondingly set on each connector 40 to prevent the connectors from scratching the diaphragm 100; when there is only one protective component, the protective component is a silicone layer or a rubber layer, and the protective component is set between the push plate 10 and the diaphragm 100. Optionally, through holes 321 are also provided between the multiple connectors 40, so that the ion flow can be released downward to further eliminate static electricity.

[0050] In another optional embodiment of this application, the static eliminator 30 is disposed on the upper surface of the push plate 10. The upper surface of the push plate 10 is provided with a groove or slide rail. The static eliminator 30 is disposed on the groove or slide rail. The position of the static eliminator 30 can be adjusted according to actual needs to match the distance and the static elimination intensity.

[0051] Alternatively, the push plate 10 can be provided with multiple connecting holes, forming multiple rows, with the multiple rows of connecting holes extending along the width direction of the push plate 10 (the width direction of the push plate 10 is...). Figure 1 The X-direction interval is set so that when it is necessary to adjust the position of the static eliminator 30, the static eliminator 30 can be placed at different connection holes and connected by the connector 40 to adjust the position of the static eliminator 30 relative to the push plate 10 in the X direction.

[0052] In this embodiment, the electrostatic discharge assembly also includes a sensing element. The driving member 20 is provided with a sensing element on at least one side facing the push plate 10. The sensing element is used to detect the electrode 200 below the diaphragm 100.

[0053] Specifically, the sensing element is an infrared detector or a distance detector, such as... Figure 1 As shown, when the drive unit 20 of the electrostatic discharge assembly is located at the end of the electrode 200 with the tab 300, the distance between the drive unit 20 and the electrode 200 is detected in real time by the sensor, and this distance is greater than the length of the tab 300; or the position of the tab 300 is detected by the sensor. When the sensor detects the position of the tab 300, the drive unit 20 drives the push plate 10 to move along the length direction of the tab 300, so as to avoid the tab 300 by the drive unit 20, and prevent the tab 300 from being bent and damaged by the drive unit 20 squeezing the tab 300.

[0054] This application also provides a stacking device. The stacking device includes the above-described electrostatic discharge components and a frame. There are at least two electrostatic discharge components, which are arranged vertically at intervals on the frame. The electrostatic discharge components are used to perform Z-shaped folding of the diaphragm 100.

[0055] In this embodiment, the stacking device also includes a control unit, which is signal-connected to the ion generator 31. The control unit adjusts the power of the ion generator 31 to reduce power consumption while ensuring the effectiveness of electrostatic removal. Optionally, the control unit can be timed or manually controlled, depending on the actual needs.

[0056] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: by setting the electrostatic discharge assembly including a push plate 10, a driving member 20 and an electrostatic elimination member 30, the push plate 10 is used to flatten the diaphragm, the driving member 20 is connected to one end of the push plate 10 and is used to drive the push plate 10 to move along the length direction of the diaphragm, and the electrostatic elimination member 30 is set on the push plate 10. By driving the push plate 10 to move on the diaphragm 100 through the driving member 20, the push plate 10 flattens the diaphragm 100. In this process, the electrostatic elimination member 30 set on the push plate 10 can eliminate the static electricity between the push plate 10 and the diaphragm 100, so as to prevent the push plate 10 from repeatedly rubbing against the diaphragm 100 to generate static electricity, which would cause the diaphragm 100 to be attracted and wrinkled when the push plate 10 moves, thus ensuring the product qualification rate.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrostatic discharge assembly, characterized in that, include: A pusher plate (10) is used to flatten the diaphragm (100); A driving member (20) is connected to one end of the push plate (10), and the driving member (20) is used to drive the push plate (10) to move along the length direction of the diaphragm (100); Static eliminator (30) is disposed on the push plate (10).

2. The electrostatic discharge assembly according to claim 1, characterized in that, The static eliminator (30) includes: An ion generator (31) is used to generate an ion stream; The main body (32) is detachably connected to the push plate (10), and the ion generator (31) is disposed in the main body (32). At least one side of the main body (32) is provided with a through hole (321) for releasing the ion flow.

3. The electrostatic discharge assembly according to claim 2, characterized in that, There are multiple through holes (321), and the multiple through holes (321) are spaced apart at least along the length direction of the main body (32).

4. The electrostatic discharge assembly according to claim 3, characterized in that, There are multiple ion generators (31), and each of the multiple ion generators (31) is provided in a one-to-one correspondence with a multiple through hole (321).

5. The electrostatic discharge assembly according to claim 2, characterized in that, The static eliminator (30) is disposed on the upper surface of the push plate (10), and the static eliminator (30) is detachably connected to the push plate (10).

6. The electrostatic discharge assembly according to claim 5, characterized in that, The electrostatic discharge assembly also includes a connector (40), the push plate (10) is provided with a first connection hole; the main body (32) is provided with a second connection hole, and the first connection hole and the second connection hole correspond to and communicate with each other; the connector (40) extends into the first connection hole and the second connection hole to realize the connection between the push plate (10) and the main body (32).

7. The electrostatic discharge assembly according to claim 1, characterized in that, The static eliminator (30) is adjustablely positioned on the push plate (10).

8. The electrostatic discharge assembly according to claim 6, characterized in that, The electrostatic discharge assembly also includes a protective component disposed at the end of the connector (40) away from the push plate (10).

9. The electrostatic discharge assembly according to any one of claims 1 to 8, characterized in that, The electrostatic discharge assembly also includes a sensing element. The driving member (20) is provided with the sensing element on at least one side facing the push plate (10). The sensing element is used to detect the distance between the driving member (20) and the electrode (200) below the diaphragm (100).

10. A stacking device, characterized in that, include: The electrostatic discharge assembly according to any one of claims 1 to 9; The frame is provided with at least two electrostatic eliminators, which are arranged vertically at intervals on the frame. The electrostatic eliminators are used to fold the diaphragm (100) in a Z-shape.

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