Feeding device and double-sided coating system

Abstract

The utility model relates to the technical field of lithium ion battery production equipment, in particular to a feeding device and a double-sided coating system. The feeding device is used for the double-side coating system, and the double-side coating system comprises two coating die heads. The feeding device comprises a feeding tank, a filtering assembly and an iron removal assembly. A feeding hole and a discharging hole are formed in the feeding tank; the two coating die heads can both communicate with the discharging opening, and an iron removal assembly and a filtering assembly are arranged between each coating die head and the discharging opening. Coating slurry is temporarily stored in the feeding tank and conveyed to the two coating die heads through the discharging port at the same time, and the coating slurry is treated through the iron removal assembly and the filtering assembly in the conveying process, so that the coating quality is improved. Compared with the prior art, the coating device in the embodiment integrates two sets of existing feeding systems, the space occupancy rate of double-sided coating equipment can be effectively reduced, the structure is simpler, and the cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery production equipment, in particular to a feeding device and a double-sided coating system. Background Art

[0002] In the production process of lithium batteries, in order to improve the battery's energy density, cycle life, safety, and charge acceptance, the double-sided coating system can be used to coat both the front and back sides of the substrate at the same time. The double-sided coating system includes two upper and lower coating dies, one of which is used to coat the front side of the substrate, and the other is used to coat the back side of the substrate.

[0003] In order to feed the two coating dies of the double-sided coating system, the prior art usually requires two feeding systems, which results in the double-sided coating system occupying too much space, and the system equipment is too complicated and the cost is high. Utility Model Content

[0004] (I) The problem to be solved by the present invention is that the existing double-sided coating system needs to be equipped with two sets of feeding systems, resulting in a high space occupancy rate, a complex structure and high cost.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a feeding device for a double-sided coating system, wherein the double-sided coating system comprises two coating die heads; the feeding device comprises: a feeding tank, a filtering component and an iron removal component;

[0007] The feed tank is provided with a feed inlet and a feed outlet;

[0008] The two coating dies are both able to communicate with the discharge port, and the iron removal component and the filtering component are provided between each coating die and the discharge port.

[0009] Further, it also includes a feed pipeline;

[0010] One end of the feed pipeline is connected to the discharge port, and the other end is divided into two branches respectively connected to the two coating die heads, and each branch is provided with the iron removal component and the filtering component.

[0011] Further, it also includes a power assembly;

[0012] The power assembly corresponds to the coating die head, and along the direction from the discharge port to the coating die head, the power assembly, the iron removal assembly and the filtering assembly are arranged in sequence.

[0013] Furthermore, it also includes a first pressure detection member;

[0014] The first pressure detection component is arranged at the discharge end of the power component and is used to detect the discharge pressure of the power component.

[0015] Furthermore, the filter assembly includes at least one filter, and when the filter assembly includes multiple filters, all the filters are sequentially arranged in series, and the filtering accuracy of the filter at the previous stage is less than the filtering accuracy of the filter at the next stage.

[0016] Furthermore, it also includes a second pressure detection component corresponding to the filter;

[0017] The second pressure detection component is arranged at the discharge end of the corresponding filter and is used to detect the discharge pressure of the corresponding filter.

[0018] Furthermore, the iron removal assembly includes at least one iron remover. When the iron removal assembly includes a plurality of iron removers, all of the iron removers are sequentially arranged in series.

[0019] Furthermore, a plurality of feed ports are provided along the circumferential direction of the feed tank, and each feed port is provided with a closure member for opening or closing the corresponding feed port.

[0020] Furthermore, it also includes a feeding trolley and an electric control box;

[0021] The electric control box is used to control the operating state of the feeding device. The electric control box, the feeding tank, the filtering component, the iron removal component and the power component are all arranged on the feeding trolley.

[0022] Another embodiment of the present invention further provides a double-sided coating system, comprising the feeding device described in any of the above embodiments.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a feeding device for a double-sided coating system, wherein the double-sided coating system comprises two coating dies; the feeding device comprises: a feeding tank, a filtering component and an iron removal component; the feeding tank is provided with a feeding port and a discharging port; both of the two coating dies can be connected to the discharging port, and the iron removal component and the filtering component are provided between each of the coating dies and the discharging port.

[0025] The feed tank buffers the coating slurry and delivers it to the two coating die heads through the discharge port at the same time. During the delivery process, it is processed by the iron removal component and the filter component to improve the coating quality. Compared with the prior art, the coating device in this embodiment integrates the two existing feeding systems, which can effectively reduce the space occupancy rate of the double-sided coating equipment, and has a simpler structure and lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a feeding device provided in an embodiment of the utility model;

[0028] Figure 2 A schematic structural diagram of a feeding device from another perspective provided in an embodiment of the utility model;

[0029] Figure 3 A schematic diagram of the structure of the feeding device provided in the embodiment of the utility model, and Figure 1 The difference is that Figure 3 The processing capacity of the feeding device in Figure 1 The processing capacity of the feeding device.

[0030] Icons: 11-feeding tank; 111-feeding port; 112-discharging port; 12-cover plate; 13-stirring motor; 14-flap plate; 15-breathing valve; 16-liquid level gauge; 17-sight glass; 18-feeding pipeline;

[0031] 21- iron removal assembly; 211- iron remover; 22- filter assembly; 221- filter; 23- power assembly; 24- electric control box;

[0032] 31-feeding trolley; 311-support plate; 312-wheel;

[0033] 41 - first pressure detection part; 42 - second pressure detection part. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] like Figures 1 to 3As shown, an embodiment of the utility model provides a feeding device for a double-sided coating system, the double-sided coating system includes two coating dies; the feeding device includes: a feeding tank 11, a filtering component 22 and an iron removal component 21; the feeding tank 11 is provided with a feeding port 111 and a discharging port 112; both of the two coating dies can be connected to the discharging port 112, and a iron removal component 21 and a filtering component 22 are provided between each coating die head and the discharging port 112.

[0036] The feeding device provided in this embodiment is used for a double-sided coating system, and the double-sided coating system has two coating dies to achieve simultaneous coating of the upper and lower surfaces of the substrate. The feeding device in this embodiment is used to convey the coating slurry to the two coating dies of the double-sided coating system. The feeding device includes a feeding tank 11, a filtering component 22 and an iron removal component 21. Among them, a feed port 111 and a discharge port 112 are provided on the feeding tank 11, and the feed port 111 is used to communicate with the coating slurry source, and a delivery pump can be set between the feed port 111 and the material source, and the discharge port 112 is used to communicate with the two coating dies. In addition, an iron removal component 21 and a filtering component 22 are provided between each coating die and the feed port 111, wherein the iron removal component 21 is used to remove magnetic substances in the coating slurry, and the filtering component 22 is used to remove large particles in the coating slurry, such as agglomerates, so as to avoid the coating quality of the coating die. When in use, the coating slurry buffered in the supply tank 11 is discharged through the discharge port 112, and is transported to the corresponding coating die head after being processed by the iron removal component 21 and the filter component 22.

[0037] The feeding device provided in this embodiment has a feeding tank 11 for buffering the coating slurry and simultaneously conveying it to two coating die heads through a discharge port 112. During the conveying process, the coating slurry is processed by an iron removal component 21 and a filter component 22 to improve the coating quality. Compared with the prior art, the coating device in this embodiment integrates the two existing feeding systems, which can effectively reduce the space occupancy rate of the double-sided coating equipment, and has a simpler structure and lower cost.

[0038] In this embodiment, one end of the feed tank 11 is open, and a cover plate 12 is provided at the open end of the feed tank 11 for opening or closing the open end of the feed tank 11. A stirring motor 13 is provided on the cover plate 12, and a stirring shaft connected to the stirring motor 13 is provided in the feed tank 11. When in use, the stirring shaft is driven to rotate by the stirring motor 13, so that the coating slurry in the feed tank 11 can be stirred to prevent the coating slurry from settling. An operation hole is also hinged on the cover plate 12, and a flap 14 is hinged at the operation hole. The flap 14 is used to open or close the operation hole. Through the operation hole, the operator can observe the coating slurry inside the feed tank 11, and can also manually pour the coating slurry into the feed tank 11 through the operation hole. The tank cover is also provided with a breathing valve 15, a liquid level gauge 16, a sight glass 17 and a light source; the breathing valve 15 is used to adjust the pressure in the supply tank 11; the liquid level gauge 16 is used to monitor the liquid level in the supply tank 11 in real time. When the liquid level in the supply tank 11 is higher than the preset value, the feeding can be stopped at the feed port 111 manually or by setting an automatic controller; the sight glass 17 cooperates with the light source to facilitate the operator to observe the situation in the supply tank 11.

[0039] The feeding device provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown, it also includes a feed pipeline 18; one end of the feed pipeline 18 is connected to the discharge port 112, and the other end is divided into two branches respectively connected to the two coating dies, and each branch is provided with an iron removal component 21 and a filtering component 22.

[0040] The above content mentioned that the feeding device is used to feed the double-sided coating system. In order to simplify the structure of the feeding device, it is preferred that only one discharge port 112 is provided. In order to enable the discharge port 112 to be connected to two coating die heads, a feeding pipeline 18 with two branches is required. Specifically, in the present embodiment, the discharge port 112 is connected to the feeding pipeline 18, and the end of the feeding pipeline 18 away from the discharge port 112 is divided into two branches, and the two branches are respectively connected to the two coating die heads, and the iron removal component 21 and the filter component 22 are arranged on the corresponding branches.

[0041] Optionally, in this embodiment, the feed pipeline 18 may be composed of a plurality of pipe sections, and the pipe sections are assembled into the above-mentioned feed pipeline 18 with the cooperation of pipe fittings such as tees and elbows.

[0042] Preferably, in the present embodiment, a control valve, such as a gate valve, a butterfly valve or a solenoid valve, is provided at the discharge port 112 for controlling the on-off of the discharge port 112 .

[0043] It is understandable that, in this embodiment, the feed tank 11 may also be provided with two discharge ports 112, each discharge port 112 being connected to one of the coating dies respectively, which can also achieve the purpose of the feed tank 11 having two coating dies in this embodiment.

[0044] The feeding device provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown, it also includes a power assembly 23; the power assembly 23 corresponds to the coating die head, and along the direction from the discharge port 112 to the coating die head, the power assembly 23, the iron removal assembly 21 and the filtering assembly 22 are arranged in sequence.

[0045] In this embodiment, the power assembly 23 is used to provide power for the coating slurry flow, and the power assembly 23 is preferably a screw pump, which can stir the slurry while conveying the coating slurry to improve the uniformity of the coating slurry. The power assembly 23 can also be a plunger pump, etc. Preferably, the power assembly 23, the iron removal assembly 21 and the filter assembly 22 are arranged in sequence, so that the iron removal assembly 21 can remove the magnetic material mixed in the coating slurry during the conveying process to avoid damage to the subsequent filter assembly 22, and the filter assembly 22 can remove large particles of the coating slurry to ensure the coating quality.

[0046] The feeding device provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown, it also includes a first pressure detection component 41 ; the first pressure detection component 41 is disposed at the discharge end of the power component 23 and is used to detect the discharge pressure of the power component 23 .

[0047] In this embodiment, the discharge end of the power assembly 23 is provided with a first pressure detection component 41, which can be a pressure sensor or a pressure gauge, etc. The first pressure detection component 41 is used to detect the discharge pressure of the power assembly 23, and the discharge pressure of the power assembly 23 is also the feed pressure of the downstream iron removal assembly 21. The first pressure detection component 41 is provided with a pressure threshold interval. When the detection data of the first pressure detection component 41 exceeds the threshold interval, the power assembly 23 needs to be stopped or the feeding device needs to be alarmed, and the coating die head downstream needs to be stopped to avoid affecting the coating quality of the coating die head due to excessive pressure. When the detection data of the first pressure detection component 41 is lower than the threshold interval, it indicates that the power assembly 23 may have a leak, and the power assembly 23 also needs to be stopped for inspection.

[0048] The feeding device provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown, the iron removal assembly 21 includes at least one iron remover 211. When the iron removal assembly 21 includes a plurality of iron removers 211, all the iron removers 211 are sequentially arranged in series.

[0049] In this embodiment, the iron removal component 21 includes an iron remover 211, which can effectively absorb the magnetic material in the coating slurry to avoid damaging the filter component 22 and affecting the coating of the coating die head. In order to improve the removal effect of the magnetic material, multiple iron removers 211 can be set, and the specific number of iron removers 211 can be selected according to the processing capacity of the feeding device. In addition, when multiple iron removers 211 are set, all iron removers 211 are arranged in series in sequence.

[0050] In this embodiment, when only one iron remover 211 is provided, a three-way joint is provided at its feed end, and the other two interfaces of the three-way joint, one is used to communicate with the power assembly 23, and the other is used to set the above-mentioned first pressure detection member 41. When multiple iron removers 211 are provided, the above-mentioned three-way joint is only provided at the feed end of the iron remover 211 connected to the power assembly 23.

[0051] Optionally, a separate opening may be provided on the delivery pipeline for installing the first pressure detection member 41 .

[0052] The feeding device provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown, the filter assembly 22 includes at least one filter 221 . When the filter assembly 22 includes multiple filters 221 , all filters 221 are sequentially arranged in series, and the filtering accuracy of the previous filter 221 is less than the filtering accuracy of the next filter 221 .

[0053] In this embodiment, the filter assembly 22 includes a filter 221, which is a common device in the field of lithium-ion battery coating, and its specific structure is not repeated here. One filter 221 can be set, or multiple filters can be set, which can be set according to the processing capacity of the feeding device. When multiple filters 221 are set, all filters 221 are connected in series in sequence, and the filtering accuracy of the filter 221 is gradually increased along the conveying direction of the coating slurry to avoid clogging of the filter 221.

[0054] The feeding device provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown, it also includes a second pressure detection member 42 corresponding to the filter 221 ; the second pressure detection member 42 is disposed at the discharge end of the corresponding filter 221 and is used to detect the discharge pressure of the corresponding filter 221 .

[0055] In this embodiment, the feeding device further includes a second pressure detection member 42, which is arranged corresponding to the filter 221. The second pressure detection member 42 may also be a pressure sensor or a pressure gauge. The second pressure detection member 42 is arranged at the discharge end of the filter 221, and is used to detect the discharge pressure of the corresponding filter 221. When only one filter 221 is provided, the second pressure detection member 42 is used to detect the discharge pressure of the filter 221. By cooperating with the first pressure detection member 41, the pressure difference between the first pressure detection member 41 and the second pressure detection member 42 can be obtained, thereby determining whether the filter 221 is clogged. When multiple filters 221 are provided, the second pressure detection member 42 of the upper filter 221 of a filter 221 can detect the feed pressure of the filter 221, and the second pressure detection member 42 corresponding to the filter 221 itself can detect its own discharge pressure. By obtaining the pressure difference, it is also possible to determine whether the filter 221 is clogged.

[0056] Optionally, in this embodiment, a drain valve may be provided at the feed end of the filter 221 through a three-way joint, so as to drain the substances in the filter 221 when the filter 221 is cleaned or the filter element is replaced.

[0057] Optionally, in this embodiment, an exhaust valve needs to be provided at the discharge end of the filter 221 to exhaust the gas in the filter 221 before the filter 221 is started. Specifically, a four-way connector can be provided at the discharge end of the filter 221 to connect downstream equipment, the second pressure detection component 42 and the exhaust valve.

[0058] The feeding device provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown, a plurality of feed ports 111 are provided along the circumferential direction of the feed tank 11 , and each feed port 111 is provided with a closure member for opening or closing the corresponding feed port 111 .

[0059] Preferably, in this embodiment, a plurality of feed ports 111 are provided, the feed ports 111 are provided on the side wall of the feed tank 11, and all the feed ports 111 are provided at intervals along the circumferential direction of the feed tank 11. By providing a plurality of feed ports 111, it is possible to facilitate the selection of the installation position of the feed device. Moreover, it is also conducive to the realization of the movable setting of the feed device mentioned below.

[0060] When the feeding device is in use, only one of the feed ports 111 is needed for feeding, and for this purpose, a closure member is provided at each feed port 111, and the closure member is used to open or close the corresponding feed port 111, so as to ensure that only one of the feed ports 111 is used for feeding when the feeding device is in use, and the other feed ports 111 are closed. Optionally, the closure member may be an on-off valve, such as a gate valve or a butterfly valve, or the closure member may also be a flange blind plate.

[0061] The feeding device provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown, it also includes a feeding trolley 31 and an electric control box 24; the electric control box 24 is used to control the operating state of the feeding device, and the electric control box 24, the feeding tank 11, the filter assembly 22, the iron removal assembly 21 and the power assembly 23 are all arranged on the feeding trolley 31.

[0062] In this embodiment, the feeding device further includes a feeding trolley 31 and an electric control box 24. The electric control box 24 is a control unit of the feeding device, which is used to control, for example, the operating data of the power assembly 23 and the feeding of the feeding tank 11. In order to facilitate the movement of the feeding device, the electric control box 24, the feeding tank 11, the filter assembly 22, the iron removal assembly 21 and the power assembly 23 are all arranged on the feeding trolley 31, and the operator can push the feeding trolley 31 to a predetermined position according to actual conditions.

[0063] In this embodiment, the feeding trolley 31 includes a support plate 311, one side of the support plate 311 is used to accommodate the electric control box 24, the feeding tank 11, the filter assembly 22, the iron removal assembly 21 and the power assembly 23, and the other side is provided with a wheel 312, and the wheel 312 is provided with a brake assembly for controlling the rotation of the wheel 312. Furthermore, the side of the support plate 311 provided with the wheel 312 is provided with a retractable support member, such as an oil cylinder or an air cylinder, etc. When the feeding device is in use, the support member extends out and contacts the ground to support the support plate 311 and prevent the wheel 312 from being damaged due to excessive load.

[0064] Furthermore, in the present embodiment, since the feeding device is a movable device, providing a plurality of feeding ports 111 can well match the movable function of the feeding device, making it convenient to connect the feeding device to the coating system.

[0065] Another aspect of the present invention is to provide a double-sided coating system, comprising the feeding device described in any of the above embodiments.

[0066] The double-sided coating system includes two coating dies, which are used to coat the upper and lower sides of the substrate respectively, and the feeding device can feed the two coating dies at the same time. The advantages of the double-sided coating system are the same as those of the above-mentioned feeding device, so they are not repeated here.

[0067] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0068] In the description of the present invention, 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A feeding device for a double-sided coating system, wherein the double-sided coating system comprises two coating dies; characterized in that: The feeding device comprises: a feeding tank (11), a filtering component (22) and an iron removal component (21); The feed tank (11) is provided with a feed inlet (111) and a discharge outlet (112); Both of the two coating die heads can be in communication with the discharge port (112), and the iron removal component (21) and the filtering component (22) are provided between each of the coating die heads and the discharge port (112).

2. The feeding device according to claim 1, characterized in that: Also includes a feed pipeline (18); One end of the feed pipeline (18) is connected to the discharge port (112), and the other end is divided into two branches respectively connected to the two coating die heads, and each branch is provided with the iron removal component (21) and the filtering component (22).

3. The feeding device according to claim 1 or 2, characterized in that: Also includes a power assembly (23); The power assembly (23) corresponds to the coating die head, and along the direction from the discharge port (112) to the coating die head, the power assembly (23), the iron removal assembly (21) and the filtering assembly (22) are arranged in sequence.

4. The feeding device according to claim 3, characterized in that: It also includes a first pressure detection member (41); The first pressure detection component (41) is arranged at the discharge end of the power component (23) and is used to detect the discharge pressure of the power component (23).

5. The feeding device according to claim 1, characterized in that: The filter assembly (22) comprises at least one filter (221), and when the filter assembly (22) comprises a plurality of filters (221), all of the filters (221) are sequentially arranged in series, and the filtering accuracy of the filter (221) at the previous stage is less than the filtering accuracy of the filter (221) at the next stage.

6. The feeding device according to claim 5, characterized in that: It also includes a second pressure detection component (42) corresponding to the filter (221); The second pressure detection component (42) is arranged at the discharge end of the corresponding filter (221) and is used to detect the discharge pressure of the corresponding filter (221).

7. The feeding device according to claim 1, characterized in that: The iron removal component (21) comprises at least one iron remover (211); when the iron removal component (21) comprises a plurality of iron removers (211), all of the iron removers (211) are sequentially connected in series.

8. The feeding device according to claim 1, characterized in that: A plurality of feed ports (111) are provided along the circumferential direction of the feed tank (11), and each feed port (111) is provided with a closure member for opening or closing the corresponding feed port (111).

9. The feeding device according to claim 3, characterized in that: It also includes a feeding trolley (31) and an electric control box (24); The electric control box (24) is used to control the operating state of the feeding device. The electric control box (24), the feeding tank (11), the filtering component (22), the iron removal component (21) and the power component (23) are all arranged on the feeding trolley (31).

10. A double-sided coating system, characterized in that: Comprising a feeding device as claimed in any one of claims 1 to 9.

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