A lithium battery diaphragm coating device

Abstract

The utility model belongs to the technical field of lithium battery diaphragm coating, and discloses a lithium battery diaphragm coating device, including an inlet, an outlet and a liquid storage part, the top of the liquid storage part is open to form a storage cavity for storing slurry, and the inlet and outlet are both installed on the top of the liquid storage part, and a guide is installed inside the storage cavity, and a conveying channel for conveying the lithium battery diaphragm along a preset path is formed in sequence between the inlet, the guide and the outlet, and at least part of the conveying channel is below the horizontal liquid surface of the slurry. The utility model drives the lithium battery diaphragm to move through the inlet, the outlet and the liquid storage part, so that the lithium battery diaphragm is immersed in the slurry when moving, and then the slurry is coated on the lithium battery diaphragm, so that the device can apply the slurry to both sides of the diaphragm when coating the slurry, without the need for secondary processing, reducing the processing difficulty of the lithium battery diaphragm and improving the processing efficiency of the lithium battery diaphragm.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery diaphragm coating, and specifically relates to a lithium battery diaphragm coating device. Background Art

[0002] With the rapid development of new energy vehicles, mobile devices and other fields, lithium batteries, as important energy storage devices, have increasingly stringent performance requirements. As one of the key components of lithium batteries, the quality and performance of lithium battery separators directly affect the overall performance of lithium batteries. The coating process is an important link in the manufacturing process of lithium battery separators, and the uniform coating of slurry is crucial to the performance and safety of lithium batteries.

[0003] However, there are many problems with the traditional lithium battery separator coating device. For example, in a Chinese patent with publication number "CN220346376U", a lithium battery separator coating device is disclosed, which includes a mounting box and a support leg. A coating assembly is arranged below the mounting box. The coating assembly includes a lithium battery separator material box, a pointing plate, and an indicator plate. A connecting rod is fixedly connected to one side of the lithium battery separator material box and one end of the pointing plate is fixedly connected to the side of the connecting rod. The supporting leg is provided with groove 1 and groove 2, and groove 1 and groove 2 are respectively located on two adjacent sides of the supporting leg. The indicator plate is provided at the bottom of the mounting box. The indicator plate is placed in groove 2, and a marking line is set on the indicator plate. A driving mechanism is set inside the installation box and the driving mechanism includes a rotating rod and a sawtooth bar. The rotating rod is rotatably connected in the installation box and gears are fixedly connected on both sides of the rotating rod, and the gears are respectively engaged with the sawtooth bars. The device applies slurry to the diaphragm through a coating scraper. Therefore, when the device applies slurry to the diaphragm, it can only apply it on one side of the diaphragm, and then turn the diaphragm after applying the slurry for secondary processing, which increases the processing difficulty of the lithium battery diaphragm and reduces the processing efficiency of the lithium battery diaphragm. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery separator coating device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery diaphragm coating device, comprising an inlet member, an outlet member and a liquid storage member, the top of the liquid storage member is open to form a storage cavity for storing slurry, and the inlet member and the outlet member are both installed on the top of the liquid storage member, a guide member is installed inside the storage cavity, and a conveying channel for conveying the lithium battery diaphragm along a preset path is formed in sequence between the inlet member, the guide member and the outlet member, and at least part of the conveying channel is below the horizontal liquid surface of the slurry.

[0006] Preferably, the liquid storage component comprises a liquid storage shell, and the top of the liquid storage shell is recessed to form a liquid storage cavity.

[0007] Preferably, a drain pipe is fixedly connected to one side of the liquid storage shell, the drain pipe is communicated with the interior of the liquid storage cavity, and a valve is installed on the drain pipe.

[0008] Preferably, a bottom rod is fixedly connected to the bottom of the liquid storage shell.

[0009] Preferably, the introduction member comprises two symmetrically arranged support plates, two input rollers are symmetrically rotatably connected between the two support plates, and a connecting frame is fixedly connected between the liquid storage shell and the two support plates.

[0010] Preferably, the outlet member comprises a flow guide frame;

[0011] The guide frame is fixedly connected to the top of the liquid storage shell, and one side of the guide frame is open toward the support plate to form a guide groove, and two output rollers are symmetrically rotatably connected inside the guide groove.

[0012] Preferably, the guide member comprises two connecting shafts, both of which are rotatably connected to the inside of the liquid storage chamber, and both of which are sleeved with guide rollers.

[0013] Preferably, a first motor is fixedly connected to the outer side of the liquid storage shell, and an output end of the first motor is connected to one of the connecting shafts.

[0014] Preferably, two turntables are symmetrically rotatably connected to the bottom of the liquid storage shell, and two second motors are fixedly connected to the bottom of the liquid storage shell, the output ends of the two second motors are respectively connected to the two turntables, and the tops of the two turntables are fixedly connected to top plates in a circular array.

[0015] Preferably, the bottom end of the liquid storage chamber is inclined upward from one side close to the liquid discharge pipe to the other side to form a slope.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The utility model provides an inlet, an outlet and a liquid storage part, and drives the lithium battery diaphragm to move through the inlet, the outlet and the liquid storage part, so that the lithium battery diaphragm is immersed in the slurry when moving, and then the slurry is coated on the lithium battery diaphragm, so that the device can apply the slurry to both sides of the diaphragm without secondary processing, thereby reducing the processing difficulty of the lithium battery diaphragm and improving the processing efficiency of the lithium battery diaphragm.

[0018] (2) On the basis of the above-mentioned beneficial effects, when the utility model guides the lithium battery diaphragm to be coated with slurry through the input roller and the output roller, the excess slurry on the lithium battery diaphragm is squeezed by the output roller, and the slurry is allowed to flow back into the liquid storage chamber through the guide groove on the guide frame, so that the excess slurry when the device is coating the lithium battery diaphragm can be easily recovered, thereby further reducing the processing difficulty of the lithium battery diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is one of the three-dimensional diagrams of the utility model;

[0020] Figure 2 This is the second stereogram of the utility model;

[0021] Figure 3 This is the third stereogram of the utility model;

[0022] Figure 4 It is a front view of the utility model;

[0023] Figure 5 This is a three-dimensional diagram of the utility model after removing the inlet and outlet parts;

[0024] Figure 6 for Figure 5 A top view of

[0025] Figure 7 It is a three-dimensional diagram of the introduction part of the utility model;

[0026] Figure 8 It is a three-dimensional diagram of the exporting part of the utility model;

[0027] Fig. 9 for Figure 5 Internal structure diagram;

[0028] Fig.10 It is the internal structure diagram of the derived part of the utility model;

[0029] In the figure: 1, liquid storage shell; 2, input roller; 3, support plate; 4, guide roller; 5, liquid storage chamber; 6, output roller; 7, guide frame; 8, first motor; 9, connecting frame; 10, bottom rod; 11, guide groove; 12, valve; 13, drain pipe; 14, second motor; 15, turntable; 16, top plate; 17, connecting shaft; 18, ramp. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0031] See also Figure 1-Figure 10 As shown, the utility model provides the following technical solutions:

[0032] A lithium battery diaphragm coating device comprises an inlet member, an outlet member and a liquid storage member, wherein the top of the liquid storage member is open to form a storage cavity for storing slurry, and the inlet member and the outlet member are both installed on the top of the liquid storage member, a guide member is installed inside the storage cavity, and a conveying channel for conveying the lithium battery diaphragm along a preset path is formed in sequence between the inlet member, the guide member and the outlet member, and at least part of the conveying channel is below the horizontal liquid surface of the slurry.

[0033] Through the above technical scheme, when personnel need to apply slurry to the lithium battery diaphragm, the slurry is added to the storage cavity inside the liquid storage member. After the slurry is added to the storage cavity, the lithium battery diaphragm to be coated is passed through the introduction member, the guide member and the outlet member in sequence. Through the operation of the introduction member, the guide member and the outlet member, the lithium battery diaphragm is moved along the preset path formed on the conveying channel. When the lithium battery diaphragm passes through the guide member, since the guide member is inside the storage cavity, the lithium battery diaphragm will be immersed in the slurry, so that the slurry is fully attached to the lithium battery diaphragm. After the slurry on the lithium battery diaphragm is attached, the lithium battery diaphragm coated with the slurry is transported by the outlet member to the outside of the storage cavity, thereby completing the slurry coating of the lithium battery diaphragm.

[0034] Specifically, in one embodiment, regarding the above-mentioned liquid storage component:

[0035] like Figure 1-Figure 6 As shown, the liquid storage component includes a liquid storage shell 1, and the top of the liquid storage shell 1 is sunken to form a liquid storage cavity 5.

[0036] In this embodiment, when a person needs to add slurry, the slurry is added to the liquid storage chamber 5 inside the liquid storage shell 1 , and the slurry is stored in the liquid storage chamber 5 .

[0037] In addition, in the present invention, when a person needs to discharge the slurry inside the liquid storage chamber 5, in order to facilitate the discharge of the slurry, Figure 2-Figure 6 and Fig. 9 As shown, a liquid discharge pipe 13 is fixedly connected to one side of the liquid storage shell 1 , the liquid discharge pipe 13 is communicated with the inside of the liquid storage chamber 5 , and a valve 12 is installed on the liquid discharge pipe 13 .

[0038] In this embodiment, when personnel need to discharge the slurry inside the liquid storage chamber 5, they open the valve 12 on the drain pipe 13 to discharge the slurry inside the liquid storage chamber 5 through the drain pipe 13. After the slurry is discharged from the drain pipe 13, the valve 12 on the drain pipe 13 is closed.

[0039] In order to improve the slurry discharge efficiency, such as Fig. 9 As shown, the bottom end of the liquid storage chamber 5 is inclined upward from one side to the other side near the discharge pipe 13 to form a slope 18. When the discharge pipe 13 discharges the slurry, the slope 18 inside the liquid storage chamber 5 cooperates to enable the slurry inside the liquid storage chamber 5 to be discharged faster, thereby improving the efficiency of the device in discharging the slurry.

[0040] When the device is used, in order to support the liquid storage shell 1, as Figure 1-Figure 5 As shown, a bottom rod 10 is fixedly connected to the bottom of the liquid storage shell 1. When the liquid storage shell 1 is placed in the use position, the liquid storage shell 1 is supported by the bottom rod 10, so that the liquid storage shell 1 is more stable after being placed.

[0041] Specifically, in one embodiment, regarding the above-mentioned introduction piece:

[0042] like Figure 1-Figure 4 , Figure 7 As shown, the introduction member includes two symmetrically arranged support plates 3, two input rollers 2 are symmetrically rotatably connected between the two support plates 3, and a connecting frame 9 is fixedly connected between the liquid storage shell 1 and the two support plates 3.

[0043] In this embodiment, the connecting frame 9 is supported by the liquid storage shell 1, the support plate 3 is supported by the connecting frame 9, the input roller 2 is supported by the support plate 3, and then the lithium battery separator is inserted between the two input rollers 2, and the movement of the lithium battery separator is guided by the rotation of the input roller 2.

[0044] Specifically, in one embodiment, regarding the above-mentioned export component:

[0045] like Figure 1-Figure 4 , Figure 8 , Fig.10 As shown, the outlet member includes a guide frame 7;

[0046] The guide frame 7 is fixedly connected to the top of the liquid storage shell 1, and the guide frame 7 is open on one side facing the support plate 3 to form a guide groove 11, and two output rollers 6 are symmetrically rotatably connected inside the guide groove 11.

[0047] In this embodiment, after the lithium battery diaphragm is coated inside the liquid storage chamber 5, the coated lithium battery diaphragm is transported between two output rollers 6, supported by the guide frame 7 through the liquid storage shell 1, and supported by the guide frame 7 through the output roller 6, and the output roller 6 rotates to guide the coated lithium battery diaphragm to be discharged.

[0048] Specifically, in one embodiment, regarding the above-mentioned guide:

[0049] like Figure 1-Figure 4 , Figure 7 As shown, the guide member includes two connecting shafts 17, both connecting shafts 17 are rotatably connected to the inside of the liquid storage chamber 5, and both connecting shafts 17 are sleeved with guide rollers 4;

[0050] A first motor 8 is fixedly connected to the outer side of the liquid storage shell 1 , and an output end of the first motor 8 is connected to one of the connecting shafts 17 .

[0051] In this embodiment, the lithium battery diaphragm is driven to move by rotating the input roller 2, so that the lithium battery diaphragm is moved between the two guide rollers 4, and the first motor 8 is supported by the liquid storage shell 1, and the guide roller 4 is driven to rotate by the first motor 8, so that the lithium battery diaphragm is moved between the two guide rollers 4, and the lithium battery diaphragm is immersed and coated in the liquid storage chamber 5. After the lithium battery diaphragm is immersed and coated, the coated lithium battery diaphragm is transported between the two output rollers 6, and the guide frame 7 is supported by the liquid storage shell 1, and the output roller 6 is supported by the guide frame 7. The output roller 6 is rotated to guide the coated lithium battery diaphragm to be discharged. When the coated lithium battery diaphragm passes through the two output rollers 6, the slurry flows back to the liquid storage chamber 5 through the guide groove 11 on the guide frame 7.

[0052] When the slurry is injected into the liquid storage chamber 5, in order to prevent the slurry from agglomerating, as shown in FIG. Figure 5-Figure 6 and Fig. 9 As shown, two turntables 15 are symmetrically connected to the bottom of the liquid storage shell 1 for rotation, and two second motors 14 are fixedly connected to the bottom of the liquid storage shell 1. The output ends of the two second motors 14 are respectively connected to the two turntables 15, and the tops of the two turntables 15 are fixedly connected to top plates 16 in a circular array.

[0053] In this embodiment, when the lithium battery separator is coated inside the liquid storage chamber 5, the second motor 14 is supported by the liquid storage shell 1, and the turntable 15 is driven by the second motor 14 to rotate inside the liquid storage chamber 5, so that the turntable 15 and the top plate 16 synchronously stir the slurry in the liquid storage chamber 5 to prevent the slurry from agglomerating.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery separator coating device, characterized in that: It includes an inlet, an outlet and a liquid storage part. The top of the liquid storage part is open to form a storage cavity for storing slurry, and the inlet and outlet parts are both installed on the top of the liquid storage part. A guide part is installed inside the storage cavity. A conveying channel for conveying lithium battery diaphragm along a preset path is formed in sequence between the inlet, the guide and the outlet, and at least part of the conveying channel is below the horizontal liquid surface of the slurry.

2. A lithium battery separator coating device according to claim 1, characterized in that: The liquid storage element comprises a liquid storage shell (1), the top of the liquid storage shell (1) being recessed to form a liquid storage cavity (5).

3. A lithium battery separator coating device according to claim 2, characterized in that: A liquid discharge pipe (13) is fixedly connected to one side of the liquid storage shell (1), the liquid discharge pipe (13) is communicated with the interior of the liquid storage chamber (5), and a valve (12) is installed on the liquid discharge pipe (13).

4. A lithium battery separator coating device according to claim 2, characterized in that: A bottom rod (10) is fixedly connected to the bottom of the liquid storage shell (1).

5. A lithium battery separator coating device according to claim 2, characterized in that: The introduction member comprises two symmetrically arranged support plates (3), two input rollers (2) are symmetrically rotatably connected between the two support plates (3), and a connecting frame (9) is fixedly connected between the liquid storage shell (1) and the two support plates (3).

6. A lithium battery separator coating device according to claim 5, characterized in that: The outlet member comprises a flow guide frame (7); The guide frame (7) is fixedly connected to the top of the liquid storage shell (1), and the guide frame (7) is open on one side facing the support plate (3) to form a guide groove (11), and two output rollers (6) are symmetrically rotatably connected inside the guide groove (11).

7. A lithium battery separator coating device according to claim 6, characterized in that: The guide member comprises two connecting shafts (17), the two connecting shafts (17) are both rotatably connected to the inside of the liquid storage chamber (5), and the two connecting shafts (17) are both sleeved with guide rollers (4).

8. A lithium battery separator coating device according to claim 7, characterized in that: A first motor (8) is fixedly connected to the outside of the liquid storage shell (1), and an output end of the first motor (8) is connected to one of the connecting shafts (17).

9. A lithium battery separator coating device according to claim 2, characterized in that: The bottom end of the liquid storage shell (1) is symmetrically rotatably connected to two rotating disks (15), and the bottom of the liquid storage shell (1) is fixedly connected to two second motors (14), the output ends of the two second motors (14) are respectively connected to the two rotating disks (15), and the tops of the two rotating disks (15) are fixedly connected to a top plate (16) in a circular array.

10. A lithium battery separator coating device according to claim 3, characterized in that: The bottom end of the liquid storage chamber (5) is inclined upward from one side close to the liquid discharge pipe (13) to the other side to form a slope (18).

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