Pole piece supporting plate and battery cell winding mechanism using same

Abstract

The utility model provides a pole piece supporting plate and a battery core winding mechanism using the pole piece supporting plate, the pole piece supporting plate is provided with a flat-plate-shaped supporting plate main body part, an air path is formed in the supporting plate main body part, and air suction holes are formed in the air path and on the surface of the supporting plate main body part.

Description

Technical Field

[0001] The utility model relates to the field of battery manufacturing, in particular to a pole piece pallet used in the winding process of a battery cell and a battery cell winding mechanism using the pole piece pallet. Background Art

[0002] The structures of existing battery or capacitor cells mainly include a stacked type and a wound type. Among them, a wound cell is usually formed by winding a positive electrode sheet, a negative electrode sheet, and a separator. In the winding process of the cell, it is necessary to place the pole piece on the pole piece pallet and feed it into the winding roller, and the pole piece and the separator are wound into a shape by the winding roller.

[0003] When placing the pole piece on the pole piece pallet, the pole piece sometimes warps. In particular, the negative electrode sheet made of copper foil or the like is more likely to warp, resulting in an uneven state of the pole piece on the pole piece pallet. In addition, when the length of the pole piece to be wound changes, since the size of the pole piece pallet does not match the length of the pole piece to be wound, it is also likely to cause the pole piece to be in an uneven state on the pole piece pallet. In the case where the pole piece is in an uneven state on the pole piece pallet, the following problems will occur: when winding, the pole piece is likely to rub against the winding mechanism, resulting in damage to the pole piece or the winding mechanism; when winding in an uneven state of the pole piece, it may cause quality problems of the cell; when the pole piece warps, the sensor of the cell winding mechanism may not detect the pole piece on the pole piece pallet, resulting in an alarm and shutdown; due to the limitation of the size of the pole piece pallet, the versatility of the cell winding mechanism becomes poor. Summary of the Utility Model

[0004] The present utility model is made in view of the above problems. One of its purposes is to provide a pole piece pallet and a cell winding mechanism using the pole piece pallet, which can prevent the pole piece from warping on the pole piece pallet and keep the pole piece flat. In addition, another purpose of the present utility model is to provide a pole piece pallet and a cell winding mechanism using the pole piece pallet, which can cope with pole pieces of different sizes and keep the pole piece flat.

[0005] The pole piece pallet of the first mode of the present utility model has a flat plate-shaped pallet main body portion, an air path is formed in the pallet main body portion, and suction holes are formed on the air path and on the surface of the pallet main body portion.

[0006] According to the pole piece pallet of the first mode of the present utility model, by forming an air path in the pallet main body portion and forming suction holes on the air path and on the surface of the pallet main body portion, the pole piece can be adsorbed on the pole piece pallet, preventing the pole piece from warping on the pole piece pallet and keeping the pole piece flat.

[0007] The pole piece pallet of the second mode of the present utility model is that, in the pole piece pallet of the first mode, the suction holes are distributed in a matrix on the surface of the pallet main body portion.

[0008] For the pole piece carrier plate according to the second mode of the present utility model, the suction holes are distributed in a matrix on the surface of the main body portion of the carrier plate, so that the pole piece can be adsorbed better.

[0009] The pole piece carrier plate according to the third mode of the present utility model is that in the pole piece carrier plate of the first mode or the second mode, there is also a position adjustment mechanism, and the position adjustment mechanism can adjust the position of the main body portion of the carrier plate in the horizontal direction.

[0010] According to the pole piece carrier plate of the third mode of the present utility model, it can cope with pole pieces of different sizes and keep the pole pieces flat.

[0011] The pole piece carrier plate according to the fourth mode of the present utility model is that in the pole piece carrier plate of the third mode, the main body portion of the carrier plate is formed in a substantially rectangular shape, and the position adjustment mechanism can displace the main body portion of the carrier plate along the length direction of the main body portion of the carrier plate.

[0012] According to the pole piece carrier plate of the fourth mode of the present utility model, it can cope with pole pieces of different sizes and keep the pole pieces flat.

[0013] The pole piece carrier plate according to the fifth mode of the present utility model is that in the pole piece carrier plate of the third mode, the position adjustment mechanism is a telescopic mechanism provided on one side of the main body portion of the pole piece carrier plate.

[0014] According to the pole piece carrier plate of the fifth mode of the present utility model, the position adjustment mechanism can be formed with a simple structure, cope with pole pieces of different sizes, and keep the pole pieces flat.

[0015] The pole piece carrier plate according to the sixth mode of the present utility model is that in the pole piece carrier plate of the fifth mode, the telescopic mechanism includes a cylinder barrel and a piston rod, the closed end of the cylinder barrel is fixed to the main body portion of the carrier plate, and the piston rod extends out from the open end of the cylinder barrel.

[0016] According to the pole piece carrier plate of the sixth mode of the present utility model, the position adjustment mechanism can be formed with a simple structure, cope with pole pieces of different sizes, and keep the pole pieces flat.

[0017] The pole piece carrier plate according to the seventh mode of the present utility model is that in the pole piece carrier plate of the third mode, the position adjustment mechanism is a guide rail provided below the main body portion of the pole piece carrier plate.

[0018] According to the pole piece carrier plate of the seventh mode of the present utility model, the position adjustment mechanism can be formed with a simple structure, cope with pole pieces of different sizes, and keep the pole pieces flat.

[0019] The core winding mechanism of the present utility model includes: a winding roller; and a pole piece supporting plate according to any one of the first to seventh modes, and the position adjusting mechanism can move the main body portion of the pole piece supporting plate away from or close to the winding roller.

[0020] According to the core winding mechanism of the present utility model, the pole piece can be adsorbed on the pole piece supporting plate, preventing the pole piece from warping on the pole piece supporting plate and keeping the pole piece flat. Description of the Drawings

[0021] Figure 1 It is a plan view showing the structure of the pole piece supporting plate according to an embodiment of the present utility model.

[0022] Figure 2 It is a schematic view showing the structure and usage state of the pole piece supporting plate according to an embodiment of the present utility model and the core winding mechanism using the pole piece supporting plate. Detailed Embodiment

[0023] Next, the present utility model will be described in detail with reference to the drawings.

[0024] The present disclosure will be described below with reference to the drawings. It should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below. In fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. It should be understood that the terms used in the specification are only for describing specific embodiments and are not intended to limit the present disclosure. All terms used in the specification (including technical terms and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0025] In all the drawings, the same reference numerals denote the same elements. Additionally, the drawings schematically show the structure of the pole piece carrier and the battery core winding mechanism using the pole piece carrier according to the present disclosure. The pole piece carrier and the battery core winding mechanism using the pole piece carrier according to the present disclosure are not limited to the structures shown in the drawings. The terms used in the specification are only for describing specific embodiments and are not intended to limit the present disclosure. All terms used in the specification, unless otherwise defined, have the meanings commonly understood by those skilled in the art. For the sake of brevity and clarity, well-known functions or structures may not be described in detail. In the description of the present utility model, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly set when the product of the present utility model is in use. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model.

[0026] Figure 1 It is a schematic plan view showing the structure of the pole piece carrier according to an embodiment of the present utility model. Figure 2 It is a schematic view showing the structure and the usage state of the pole piece carrier according to an embodiment of the present utility model and the battery core winding mechanism using the pole piece carrier. As Figure 1 and Figure 2 shown, the pole piece carrier 100 of the present utility model includes a carrier main body portion 1 and a position adjustment mechanism 2. The carrier main body portion 1 is formed in a rectangular flat plate shape. As the material of the carrier main body portion 1, a urea plate can be selected. An air passage 3 is formed in the carrier main body portion 1, and suction holes 4 are formed on the air passage 3 and on the surface of the carrier main body portion 1. Preferably, the suction holes 4 are uniformly distributed in a matrix on the surface of the carrier main body portion 1. An air valve 5 is installed at the port of the air passage 3. The air valve 5 is communicated with an air pump (not shown). When the air pump works, the suction holes 4 suck air, and the suction time is controlled by a program to adsorb the electrode plate.

[0027] The position adjustment mechanism 2 is used to adjust the position of the carrier main body portion 1 so that the carrier main body portion 1 can be displaced along its length direction. In the present embodiment, the position adjustment mechanism 2 is a telescopic mechanism, such as a cylinder, an oil cylinder or a linear motor, and is provided on one side in the length direction of the carrier main body portion 1. In the present embodiment, the position adjustment mechanism 2 is composed of a cylinder, including a cylinder barrel 6 and a piston rod 7. The closed end of the cylinder barrel 6 is fixed to the carrier main body portion 1, and the piston rod 7 extends from the open end of the cylinder barrel 6. An installation hole 8 is formed on the piston rod 7 for fixing the piston rod 7.

[0028] As Figure 2As shown in the figure, the cell winding mechanism of an embodiment of the present utility model includes a pole piece support plate 100 and a winding roller 200. The pole piece support plate 100 is fixed through the mounting hole 8 on the piston rod 7 of the position adjustment mechanism 2, that is, the position of the mounting hole 8 remains unchanged relative to the winding roller 200. When the position adjustment mechanism 2 expands and contracts, the main body portion 1 of the support plate moves, thus moving away from or approaching the winding roller 200. Since the main body portion 1 of the support plate can be moved away from or approached the winding roller 200, the position of the main body portion 1 of the support plate can be adjusted according to the size of the pole piece 300, so that the pole piece support plate 100 can adapt to pole pieces of different sizes and keep the pole piece in a flat state.

[0029] After adjusting the position of the main body portion 1 of the support plate according to the size of the pole piece 300, when the pole piece 300 is placed on the pole piece support plate 100, the pole piece 300 is adsorbed on the main body portion 1 of the support plate by sucking air through the suction hole 4, thereby preventing the pole piece 300 from warping and keeping the pole piece 300 in a flat state.

[0030] The above has described an embodiment of the pole piece support plate of the present utility model and the cell winding mechanism using the pole piece support plate, but the present utility model is not limited to the above embodiment and can be variously changed without departing from the gist of the present utility model.

[0031] For example, in the pole piece support plate of the above embodiment, the position adjustment mechanism 2 is a telescopic mechanism composed of a cylinder, an oil cylinder or a linear motor, etc. However, as long as the main body portion 1 of the support plate can be displaced along its length direction, other structures can also be adopted. For example, a guide rail can be provided below the pole piece support plate as the position adjustment mechanism, and the pole piece support plate is moved along the guide rail to adjust the position.

[0032] For those skilled in the art, it is obvious that the present utility model can be variously omitted, changed and deformed without departing from the spirit or scope of the present utility model. Therefore, it should be understood that the present utility model includes changes and deformations within the scope of the appended claims and their equivalents. In particular, it should be clearly understood that when any two or more arbitrary parts or all of the above embodiments and their deformations are combined, it can be understood that it is within the scope of the present utility model.

Claims

1. A pole piece support plate, characterized in that: The pallet body has a flat plate shape, an air path is formed in the pallet body, and air intake holes are formed on the air path and on the surface of the pallet body.

2. The pole piece support plate according to claim 1, characterized in that: The air suction holes are distributed in a matrix shape on the surface of the support plate main body.

3. The pole piece support plate according to claim 1 or 2, characterized in that: A position adjustment mechanism is further provided, and the position adjustment mechanism can adjust the position of the pallet body in the horizontal direction.

4. The pole piece support plate according to claim 3, characterized in that: The pallet body is formed in a substantially rectangular shape, and the position adjustment mechanism can displace the pallet body along a longitudinal direction of the pallet body.

5. The pole piece support plate according to claim 3, characterized in that: The position adjustment mechanism is a telescopic mechanism arranged on one side of the pole piece support plate main body.

6. The pole piece support plate according to claim 5, characterized in that: The telescopic mechanism comprises a cylinder and a piston rod, wherein the closed end of the cylinder is fixed to the support plate main body, and the piston rod extends from the open end of the cylinder.

7. The pole piece support plate according to claim 3, characterized in that: The position adjustment mechanism is a guide rail arranged below the main body of the pole piece support plate.

8. A battery cell winding mechanism, wherein: have: Winding roller; as well as The pole piece support plate according to any one of claims 1 to 7, The position adjustment mechanism can move the pole piece support plate body away from or close to the winding roller.

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