Battery pole piece production equipment

Abstract

The utility model relates to the technical field of battery pole pieces, in particular to battery pole piece production equipment. Comprising a first membrane output device, and the first membrane output device is used for producing and outputting a first electrode membrane; the second membrane output device is used for producing and outputting a second electrode membrane; the foil unwinding and outputting device is used for outputting the foil; the first compounding device is used for receiving the first electrode diaphragm and the foil and compounding the first electrode diaphragm to the first side surface of the foil so as to obtain a single-sided composite pole piece; and the second compounding device is used for receiving the single-sided composite pole piece and the second electrode diaphragm and compounding the second electrode diaphragm to the second side surface of the foil so as to obtain a double-sided composite pole piece.

Description

Technical Field

[0001] The utility model relates to the technical field of battery electrode plates, in particular to a production device for battery electrode plates. Background Art

[0002] The existing preparation method for electrode plates is mainly wet coating. That is, first, in the homogenization process, solvents are used to stir and disperse active material powders, binder powders, conductive agent powders, etc. to form a slurry. Subsequently, in the coating process, it is quantitatively coated on current collectors such as copper and aluminum foils and dried to obtain a porous electrode plate. However, this process uses a large amount of solvents in the slurry, and the equipment is large in volume, expensive in price, and high in energy consumption.

[0003] Another process is dry electrode preparation. However, the preparation method is to separately prepare the electrode film. After the preparation is offline, the current collector substrate and the electrode film are separately unwound, aligned, laminated, and inspected again. This method has many production processes and many transfer processes, resulting in low production efficiency, high costs, and a great impact on product quality during the intermediate process.

[0004] Therefore, it is necessary to propose a technical means to solve the above defects. Content of the Utility Model

[0005] The utility model adopts the following technical solutions:

[0006] A production device for battery electrode plates includes a first film output device for the production and output of a first electrode film; a second film output device for the production and output of a second electrode film; a foil unwinding and output device for outputting foils; a first lamination device for receiving the first electrode film and the foils and laminating the first electrode film to the first side of the foils to obtain a single-sided laminated electrode plate; a second lamination device for receiving the single-sided laminated electrode plate and the second electrode film and laminating the second electrode film to the second side of the foils to obtain a double-sided laminated electrode plate; and a winding device for receiving and winding the double-sided laminated electrode plate.

[0007] Preferably, the first film output device includes a first electrode film preparation component for manufacturing the first electrode film, a first trimming component for trimming the first electrode film output by the first electrode film preparation component, and a first rolling component for compacting the trimmed first electrode film.

[0008] Preferably, the second diaphragm output device includes a second electrode diaphragm preparation component for manufacturing the second electrode diaphragm, a second trimming component for trimming the second electrode diaphragm output by the second electrode diaphragm preparation component, and a second rolling component for compacting the trimmed second electrode diaphragm.

[0009] Preferably, the foil unrolling and output device includes an unrolling shaft for unrolling the foil.

[0010] Preferably, the first composite device includes a first coating component for receiving the foil output from the foil unrolling component and coating the electrolyte on the first side of the foil, and a first bonding component for receiving the first electrode diaphragm output from the first diaphragm output device and the coated foil, and bonding the first electrode diaphragm to the first side of the foil.

[0011] Preferably, the second composite device includes a second coating component for receiving the single-sided composite electrode sheet and coating the electrolyte on the second side of the foil in the single-sided composite electrode sheet, and a second bonding component for receiving the second electrode diaphragm output from the second diaphragm output device and the coated single-sided composite electrode sheet, and bonding the second electrode diaphragm to the second side of the foil.

[0012] Preferably, an oven for drying the double-sided composite electrode sheet is provided between the winding device and the second composite device.

[0013] Preferably, a hot rolling device for heating the double-sided composite electrode sheet and compacting it after heating is provided between the winding device and the second composite device.

[0014] Preferably, a cold rolling device for cooling the double-sided composite electrode sheet and compacting it after cooling is provided between the winding device and the second composite device.

[0015] Preferably, a third laser thickness gauge is further included, which is installed at the input end of the winding device and is used for measuring the thickness of the double-sided composite electrode sheet input into the winding device for winding.

[0016] A battery electrode sheet generating device according to the present invention can efficiently complete the production of diaphragms and the composite with foils, without subsequent offline transfer, realizes the continuous production of electrode sheets, greatly improves the production efficiency of electrode sheets, and is suitable for industrial applications. Description of the Drawings

[0017] Figure 1 It is an overall schematic diagram of a battery electrode sheet generating device of the present invention;

[0018] Figure 2 Overall schematic diagram of the first diaphragm output device, foil unwinding and output device, and the first composite device in a battery electrode sheet generating device of the present utility model;

[0019] Figure 3 Overall schematic diagram of the second diaphragm output device, second composite device, oven, hot roll pressing device, cold roll pressing device, winding device, and third laser thickness gauge in a battery electrode sheet generating device of the present utility model. Specific embodiments

[0020] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Such as Figures 1 to 3, A battery electrode sheet production device, including a first diaphragm output device 10 for the production and output of the first electrode diaphragm; a second diaphragm output device 20 for the production and output of the second electrode diaphragm; a foil unwinding and output device 30 for outputting the foil; a first composite device 40 for receiving the first electrode diaphragm and the foil and laminating the first electrode diaphragm to the first side of the foil to obtain a single-sided composite electrode sheet; a second composite device 50 for receiving the single-sided composite electrode sheet and the second electrode diaphragm and laminating the second electrode diaphragm to the second side of the foil to obtain a double-sided composite electrode sheet; a winding device 60 for receiving and winding the double-sided composite electrode sheet.

[0024] A battery electrode sheet generating device according to the present invention can efficiently complete the production of the diaphragm and the lamination with the foil, without subsequent offline transfer, realizing the continuous production of the electrode sheet, greatly improving the production efficiency of the electrode sheet, and being suitable for industrial applications.

[0025] In a specific embodiment, the winding device 60 includes a winding shaft 601 for winding the double-sided composite electrode sheet.

[0026] In a specific embodiment, the first diaphragm output device 10 includes a first electrode diaphragm preparation component 101 for manufacturing the first electrode diaphragm, a first trimming component 102 for trimming the first electrode diaphragm output by the first electrode diaphragm preparation component 101, and a first rolling component 103 for compacting the trimmed first electrode diaphragm.

[0027] Specifically, the first electrode film preparation assembly 101 includes a first forming roller 104 and a second forming roller 105 that are horizontally arranged and press against each other, a first driving unit (not shown in the figure) connected to the first forming roller 104 and the second forming roller 105 for driving the first forming roller 104 and the second forming roller 105 to rotate inwardly towards each other, a first support roller 106 and a second support roller 107 respectively installed on the sides of the first forming roller 104 and the second forming roller 105 that are away from each other, pressing against the first forming roller 104 and the second forming roller 105 respectively, and capable of rotating around their own axes, and a first feeding hopper 108 installed on the first forming roller 104 and the second forming roller 105 for feeding materials for electrode film forming between the first forming roller 104 and the second forming roller 105; further, during operation, materials are fed between the first forming roller 104 and the second forming roller 105 through the first feeding hopper 108. At this time, the first forming roller 104 and the second forming roller 105 rotate relatively inwardly driven by the first driving unit, so that the materials are roll-pressed into the first electrode film under high temperature and high pressure and are output downward to the first trimming assembly 102 for trimming. Through the arrangement of the first support roller 106 and the second support roller 107, deformation of the first forming roller 104 and the second forming roller 105 during operation is prevented, thereby improving the quality of the first electrode film.

[0028] Specifically, the first trimming assembly 102 includes a first cutting knife roller 109 installed on the conveying path of the first electrode film for trimming the edges of the first electrode film.

[0029] Specifically, the first rolling assembly 103 includes a first pressing roller 110 and a second pressing roller 111 for pressing the first electrode film.

[0030] Specifically, the first film output device 10 further includes a first laser thickness gauge 112 installed on one side of the output end of the first rolling assembly 103 for measuring the thickness of the roll-pressed first electrode film.

[0031] In a specific embodiment, the second film output device 20 includes a second electrode film preparation assembly 201 for manufacturing a second electrode film, a second trimming assembly 202 for trimming the second electrode film output by the second electrode film preparation assembly 201, and a second rolling assembly 203 for pressing the trimmed second electrode film.

[0032] Specifically, the second electrode film preparation assembly 201 includes a third forming roller 204 and a fourth forming roller 205 that are horizontally arranged and press against each other, a second driving unit (not shown in the figure) connected to the third forming roller 204 and the fourth forming roller 205 for driving the third forming roller 204 and the fourth forming roller 205 to rotate inwardly towards each other, a third support roller 206 and a fourth support roller 207 respectively installed on the sides of the third forming roller 204 and the fourth forming roller 205 that are away from each other, respectively pressing against the third forming roller 204 and the fourth forming roller 205, and capable of rotating around their own axes, and a second feeding hopper 208 installed on the third forming roller 204 and the fourth forming roller 205 for feeding materials for electrode film forming between the third forming roller 204 and the fourth forming roller 205; further, during operation, materials are fed between the third forming roller 204 and the fourth forming roller 205 through the second feeding hopper 208. At this time, the third forming roller 204 and the fourth forming roller 205 rotate relatively inwardly driven by the second driving unit, so that the materials are roll-pressed into a second electrode film under high temperature and high pressure and are output downward to the second trimming assembly 202 for trimming. Through the arrangement of the third support roller 206 and the fourth support roller 207, deformation of the third forming roller 204 and the fourth forming roller 205 during operation is prevented, thereby improving the quality of the second electrode film.

[0033] Specifically, the second trimming assembly 202 includes a second cutting roller 209 installed on the conveying path of the second electrode film for trimming the edges of the second electrode film.

[0034] Specifically, the second rolling assembly 203 includes a third pressing roller 210 and a fourth pressing roller 211 for compacting the second electrode film.

[0035] Specifically, the second film output device 20 further includes a second laser thickness gauge 212 installed on one side of the output end of the second rolling assembly 203 for measuring the thickness of the roll-pressed second electrode film.

[0036] In a specific embodiment, the foil unrolling and output device 30 includes an unrolling shaft 301 for unrolling the foil.

[0037] In a specific embodiment, the first composite device 40 includes a first coating assembly 401 for receiving the foil output from the foil unwinding assembly and applying an electrolyte to the first side of the foil, and a first bonding assembly 402 for receiving the first electrode film output from the first film output device 10 and the coated foil, and bonding the first electrode film to the first side of the foil. Specifically, the first coating assembly 401 includes a first applicator head 403 for applying an electrolyte to the first side of the foil. The first bonding assembly 402 includes a first pressing roller 404 and a second pressing roller 405 that abuts against the first pressing roller 404. During operation, the coated foil and the first electrode film are conveyed between the first pressing roller 404 and the second pressing roller 405, and are then bonded together by the action of the first pressing roller 404 and the second pressing roller 405. Specifically, the first composite device 40 further includes a first guide roller assembly 406 for guiding the coated foil between the first pressing roller 404 and the second pressing roller 405, and a second guide roller assembly 407 for guiding the first electrode film output from the first film output device 10 between the first pressing roller 404 and the second pressing roller 405.

[0038] In a specific embodiment, the second composite device 50 includes a second coating assembly 501 for receiving the single-sided composite electrode sheet and applying an electrolyte to the second side of the foil in the single-sided composite electrode sheet, and a second bonding assembly 502 for receiving the second electrode film output from the second film output device 20 and the coated single-sided composite electrode sheet, and bonding the second electrode film to the second side of the foil. Specifically, the second coating assembly 501 includes a second applicator head 503 for applying an electrolyte to the second side of the foil. The second bonding assembly 502 includes a third pressing roller 504 and a fourth pressing roller 505 that abuts against the third pressing roller 504. During operation, the coated single-sided composite electrode sheet and the second electrode film are conveyed between the third pressing roller 504 and the fourth pressing roller 505, and are then bonded together by the action of the third pressing roller 504 and the fourth pressing roller 505. Specifically, the second composite device 50 further includes a third guide roller assembly 506 for guiding the coated single-sided composite electrode sheet between the third pressing roller 504 and the fourth pressing roller 505, and a fourth guide roller assembly 507 for guiding the second electrode film output from the second film output device 20 between the third pressing roller 504 and the fourth pressing roller 505.

[0039] In a specific embodiment, an oven 70 for drying the double-sided composite electrode sheet is provided between the winding device 60 and the second composite device 50. In this embodiment, the setting of the oven 70 further improves the tightness and adhesiveness between the first electrode film, the second electrode film and the foil.

[0040] In a specific embodiment, a hot roll pressing device 80 for heating the double-sided composite electrode sheet and compacting it after heating is provided between the winding device 60 and the second composite device 50.

[0041] In a specific embodiment, a cold roll pressing device 90 for cooling the double-sided composite electrode sheet and compacting it after cooling is provided between the winding device 60 and the second composite device 50.

[0042] Specifically, in this embodiment, the hot roll pressing device 80 includes a heating roll 801 for heating the double-sided composite electrode sheet, and a fifth pressing roll 802 and a sixth pressing roll 803 that are used to compact the double-sided composite electrode sheet after the heating roll 801 heats it and that press against each other. The cold roll pressing device 90 includes a cooling roll 901 for cooling the double-sided composite electrode sheet, and a seventh pressing roll 902 and an eighth pressing roll 903 that are used to compact the double-sided composite electrode sheet after the cooling roll 901 cools it and that press against each other. In this embodiment, after the double-sided composite electrode sheet is hot roll pressed and cold roll pressed, the tightness and adhesiveness between the first electrode film, the second electrode film and the foil are further improved.

[0043] In a specific embodiment, it further includes a third laser thickness gauge 100 installed at the input end of the winding device 60 for measuring the thickness of the double-sided composite electrode sheet input into the winding device 60 for winding.

[0044] A battery electrode sheet production device according to the present utility model can efficiently complete the production of the film and the composite with the foil, without subsequent offline transfer procedures, realizes the continuous production of the electrode sheet, greatly improves the production efficiency of the electrode sheet, and is suitable for industrial applications.

[0045] The above embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A battery pole piece production equipment, characterized in that: include A first membrane output device, which is used for producing and outputting a first electrode membrane; A second membrane output device, the second membrane output device is used for producing and outputting the second electrode membrane; A foil unwinding and outputting device, wherein the foil unwinding and outputting device is used to output the foil; A first composite device, the first composite device is used to receive the first electrode membrane and the foil material, and composite the first electrode membrane to the first side surface of the foil material to obtain a single-sided composite electrode sheet; A second composite device, the second composite device is used to receive the single-sided composite electrode sheet and the second electrode membrane, and composite the second electrode membrane to the second side surface of the foil to obtain a double-sided composite electrode sheet; A winding device is used to receive and wind up the double-sided composite pole piece.

2. The battery pole piece production equipment according to claim 1, characterized in that: The first membrane output device includes a first electrode membrane preparation assembly for manufacturing the first electrode membrane, a first trimming assembly for trimming the first electrode membrane output by the first electrode membrane preparation assembly, and a first rolling assembly for compacting the trimmed first electrode membrane.

3. The battery pole piece production equipment according to claim 1, characterized in that: The second membrane output device includes a second electrode membrane preparation assembly for manufacturing the second electrode membrane, a second trimming assembly for trimming the second electrode membrane output by the second electrode membrane preparation assembly, and a second rolling assembly for compacting the trimmed second electrode membrane.

4. The battery pole piece production equipment according to claim 1, characterized in that: The foil material unwinding and outputting device comprises an unwinding shaft for unwinding the foil material.

5. The battery pole piece production equipment according to claim 1, characterized in that: The first composite device includes a first coating assembly for receiving the foil output from the foil unwinding assembly and applying electrolyte to the first side of the foil, and a first bonding assembly for receiving the first electrode membrane output from the first membrane output device and the coated foil, and bonding the first electrode membrane to the first side of the foil.

6. The battery pole piece production equipment according to claim 1, characterized in that: The second composite device includes a second coating component for receiving the single-sided composite electrode sheet and applying electrolyte to the second side of the foil in the single-sided composite electrode sheet, and a second bonding component for receiving the second electrode membrane outputted from the second membrane output device and the coated single-sided composite electrode sheet, and bonding the second electrode membrane to the second side of the foil.

7. The battery pole piece production equipment according to claim 1, characterized in that: An oven for drying the double-sided composite electrode sheet is provided between the winding device and the second composite device.

8. The battery pole piece production equipment according to claim 1, characterized in that: It also includes a third laser thickness gauge installed at the input end of the winding device and used to measure the thickness of the double-sided composite pole piece input into the winding device for winding.

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