Battery cell diaphragm spraying device

Abstract

The utility model belongs to the technical field of battery production, and particularly relates to a battery spraying device which comprises a conveying mechanism, and a spraying mechanism, a drying mechanism and a heating mechanism which are sequentially arranged along the conveying direction of the conveying mechanism, the conveying mechanism is used for conveying the diaphragm structure; the spraying mechanism is arranged above the conveying mechanism; the heating mechanism comprises at least one heating part; and an assembly gap is formed between the heating part and the diaphragm structure. According to the utility model, overlarge liquid drop particles can be prevented from being formed to stick to the roller and fall off; therefore, the spraying quality is ensured and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery production technology, and in particular relates to a cell separator spraying device. Background Technology

[0002] The primary function of the battery separator is to separate the positive and negative electrodes, preventing short circuits caused by contact between them. It also allows electrolyte ions to pass through, while simultaneously improving the separator's heat resistance and safety. To increase battery rigidity, current practice involves spraying a polymer coating onto one or both sides of the separator. This polymer coating bonds with the electrodes, achieving the desired increase in battery rigidity.

[0003] However, most existing battery cell separator coating equipment suffers from particle agglomeration during long-term operation, resulting in excessively large coated particles. These particles cannot be completely dried and stick to the conveyor rollers after exiting the drying oven. Consequently, the separator coating is picked up and detached from the conveyor rollers, reducing coating quality and production efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a battery cell diaphragm spraying device to address the shortcomings of the existing technology, which can solve the technical problem that the sprayed coating particles are too large and are stuck to the conveyor roller.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A battery cell separator spraying device includes a conveying mechanism and a spraying mechanism, a drying mechanism, and a heating mechanism arranged sequentially along the conveying direction of the conveying mechanism; the conveying mechanism is used to convey the separator structure; the spraying mechanism is disposed above the conveying mechanism; the heating mechanism includes at least one heating element; an assembly gap is provided between the heating element and the separator structure; the drying temperature of the drying mechanism is greater than the heating temperature of the heating element.

[0007] Preferably, the temperature of the heating element is 40°C to 80°C.

[0008] Preferably, the heating component is an infrared heater or a heating plate structure.

[0009] Preferably, the width of the assembly gap is set to the same dimension along the conveying direction of the conveying mechanism;

[0010] Alternatively, the width of the assembly gap can be set to gradually decrease along the conveying direction of the conveying mechanism and be greater than 0.

[0011] Preferably, the heating mechanism further includes a first housing; the heating cavity is provided inside the first housing; and a first conveying channel is provided inside the first housing; the first conveying channel is disposed through the first housing along the conveying direction of the conveying mechanism and communicates with the heating cavity; the heating component is disposed inside the heating cavity.

[0012] Preferably, the heating component includes a heat-conducting plate, a heat-generating pipe, and a mounting bracket; the heat-conducting plate forms the assembly gap with the diaphragm structure; the heat-generating pipe is connected to the surface of the heat-conducting plate away from the diaphragm structure; one end of the mounting bracket is connected to the heat-conducting plate; and the other end of the mounting bracket is connected to the inner top of the first housing.

[0013] Preferably, the interior of the first housing is further provided with a ventilation and cleaning component; the ventilation and cleaning component is disposed above the heating component and the conveyed diaphragm structure.

[0014] Preferably, the exhaust cleaning assembly includes a guide cover, an extraction pipe, an exhaust fan, an exhaust pipe, and a filter component; the guide cover is disposed inside the heating chamber and above the conveying mechanism; one end of the extraction pipe is connected to the guide cover; the other end of the extraction pipe is connected to one end of the exhaust fan; the other end of the exhaust fan is connected to one end of the exhaust pipe; the other end of the exhaust pipe passes through the first housing and is connected to the outside of the first housing; the filter component is disposed inside the exhaust pipe.

[0015] Preferably, the spraying mechanism includes a spray head, a delivery pipe, a liquid pump, and a storage tank; one end of the liquid pump is connected to the interior of the storage tank; the other end of the liquid pump is connected to one end of the delivery pipe; the other end of the delivery pipe is connected to the inlet of the spray head; the outlet of the spray head is oriented towards the delivery mechanism; and the output direction of the spray head is perpendicular to the delivery direction of the delivery mechanism.

[0016] Preferably, the conveying mechanism includes a drive motor, a rotating wheel, a driving rotating chain, a driving roller, a driven rotating chain, and at least one driven roller; the drive motor is drivenly connected to the rotating wheel; the rotating wheel is drivenly connected to the driving roller via the driving rotating chain; the driving roller is drivenly connected to the driven roller via the driven rotating chain.

[0017] And / or, the drying mechanism includes a second housing and a drying heating plate; the second housing is provided with a drying cavity; the drying heating plate is disposed inside the drying cavity; the second housing is also provided with a second conveying channel; the second conveying channel is disposed through the interior of the drying cavity; and the conveying mechanism is disposed through the second conveying channel.

[0018] The beneficial effects of this utility model are as follows: by placing the heating component after the spraying mechanism and the drying mechanism, the drying process is followed by further heating and drying, which can effectively dry and fuse excessively large spray particles during the spraying process, thereby avoiding the formation of excessively large droplets that stick to the rollers and fall off; thus ensuring spraying quality and improving production efficiency; in addition, by adding an assembly gap between the heating component and the diaphragm structure, it is possible to avoid excessively close contact that could cause the spraying material to overheat and burn, thereby ensuring spraying quality and improving production efficiency. Attached Figure Description

[0019] The following will refer to the appendix. Figures 1-6 This section describes the features, advantages, and technical effects of exemplary embodiments of the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of a battery cell separator spraying device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the heating mechanism of a battery cell diaphragm spraying device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the heating mechanism of a battery cell diaphragm spraying device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the exhaust cleaning component of a battery cell separator spraying device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the spraying mechanism of a battery cell separator spraying device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the drying mechanism of a battery cell diaphragm spraying device according to an embodiment of the present invention. In the figure: 100-Spraying mechanism; 110-Spraying head; 120-Conveying pipe; 130-Liquid pump; 140-Storage tank; 200-Conveying mechanism; 300-Heating mechanism; 310-Heating component; 311-Heat-conducting plate; 312-Heat-generating pipe; 313-Mounting bracket; 301-Assembly gap; 320-First housing; 321-First conveying channel; 322-Heating cavity; 400-Exhaust cleaning component; 420-Guide cover; 430-Extraction pipe; 440-Exhaust fan; 450-Discharge pipe; 451-Filter component; 5-Diaphragm structure; The arrow in the figure indicates the conveying direction; 500-Drying mechanism; 510-; 520-Second housing; 521-Second conveying channel; 522-Drying cavity. Detailed Implementation

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or multiple situations existing alone. In addition, the character " / " in this document generally indicates that the related objects before and after are in an "or" relationship.

[0030] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0031] The following is in conjunction with the appendix Figures 1-6 The present invention will be described in further detail, but this is not intended to limit the scope of the present invention.

[0032] like Figure 1As shown, in one embodiment of this utility model, the battery cell separator spraying device includes a conveying mechanism 200 and a spraying mechanism 100, a drying mechanism 500, and a heating mechanism 300 arranged sequentially along the conveying direction of the conveying mechanism 200. The conveying mechanism 200 is used to convey the separator structure; the spraying mechanism 100 is disposed above the conveying mechanism 200; and the heating mechanism 300 includes at least one heating element 310; an assembly gap 301 is provided between the heating element 310 and the separator structure. In some cases, the drying temperature of the drying mechanism 500 is greater than the heating temperature of the heating element 310.

[0033] The technical solution of this utility model sets the heating component after the spraying mechanism and the drying mechanism, so that the drying process is followed by further heating and drying. This can effectively dry and fuse excessively large spray particles during the spraying process, so as to avoid the formation of excessively large droplets that stick to the roller and fall off. This ensures the spraying quality and improves production efficiency. In addition, by adding an assembly gap between the heating component and the diaphragm structure, it can avoid the phenomenon of overheating and scorching of the sprayed material due to excessively close contact, thereby ensuring the spraying quality and improving production efficiency.

[0034] Specifically, in some embodiments, the heating temperature of the heating element 310 is 40°C to 80°C. The heating temperature of the heating element 310 can be 40°C, 50°C, 70°C, 80°C, etc., preferably 70°C. That is, by using the heating element 310 at a relatively low temperature, excessively large sprayed particles generated during spraying on the diaphragm structure 5 can be heated and melted away, while simultaneously achieving a faster solidification rate of the sprayed material on the diaphragm structure 5 and avoiding damage to the diaphragm structure 5; thereby ensuring the quality of the spraying.

[0035] Specifically, in some embodiments, there are two heating elements 310, symmetrically arranged at the upper and lower ends of the diaphragm structure in the conveying direction; the heating element 310 can be an infrared heater or a heating plate structure. This structure can generate heat through the infrared heater or heating plate structure, achieving stability and smoothness of heating and fusion.

[0036] Specifically, in some implementations, such as Figure 1 and 2 As shown, the width of the assembly gap 301 is set to the same dimension along the conveying direction of the conveying mechanism 200. That is, the heating component 310 is arranged parallel to the upper and lower surfaces of the diaphragm structure 5 to achieve uniform isothermal heating operation, thereby heating and fusing away the excessively large sprayed particles generated on the diaphragm structure 5, while also achieving the solidification speed of the sprayed material on the diaphragm structure 5, and avoiding damage to the diaphragm structure 5.

[0037] Specifically, in some implementations, such as Figure 1 and 3 As shown, the width of the assembly gap 301 is set to gradually decrease along the conveying direction of the conveying mechanism 200 and be greater than 0. That is, the heating component 310 and the upper and lower surfaces of the diaphragm structure 5 are inclined to achieve a slightly lower temperature at the beginning stage, and the temperature gradually reaches the required heating value as the conveying progresses, so as to provide a heating buffer for the diaphragm structure 5, further avoiding damage to the diaphragm structure 5 and improving production quality.

[0038] Specifically, in some implementations, such as Figure 1 , 2 As shown in Figure 3, the heating mechanism 300 also includes a first housing 320; a heating cavity 322 is provided inside the first housing 320; and a first conveying channel 321 is provided inside the first housing 320; the first conveying channel 321 is disposed through the first housing 320 along the conveying direction and communicates with the heating cavity 322; the heating component 310 is disposed inside the heating cavity 322. This structure can reduce the loss of generated heat and improve the energy utilization rate through the heat collection effect of the first housing 320; and the first conveying channel 21 can ensure the smooth conveying of the diaphragm structure 5.

[0039] Specifically, in some implementations, such as Figure 1 , 2 As shown in Figure 3, the heating component 310 includes a heat-conducting plate 311, a heat-generating pipe 312, and a mounting bracket 313. The heat-conducting plate 311 forms the assembly gap 301 with the diaphragm structure 5. The heat-generating pipe 312 is connected to the surface of the heat-conducting plate 311 away from the diaphragm structure 5. One end of the mounting bracket 313 is connected to the heat-conducting plate 311, and the other end is connected to the inner top of the first housing 320. This structure, through the heat conduction and heating effect of a single heat-conducting plate 311, can ensure the rapid heating of the assembly gap and improve heating efficiency.

[0040] Specifically, in some implementations, such as Figure 1 and 4 As shown, the first housing 320 also includes a ventilation and cleaning assembly 400; the ventilation and cleaning assembly 400 is positioned above the heating component 310 and the conveyed diaphragm structure. Wherein, as Figure 4As shown, the exhaust cleaning assembly 400 includes a guide cover 420, an extraction pipe 430, an exhaust fan 440, an exhaust pipe 450, and a filter component 451. The guide cover 420 is disposed inside the heating chamber 322 and above the conveying mechanism 200. One end of the extraction pipe 430 is connected to the guide cover 420; the other end of the extraction pipe 430 is connected to one end of the exhaust fan 440; the other end of the exhaust fan 440 is connected to one end of the exhaust pipe 450; the other end of the exhaust pipe 450 passes through the first housing 320 and is connected to the outside of the first housing 320; the filter component 451 is disposed inside the exhaust pipe 450. In some embodiments, the filter component 451 includes a first filter screen, a first filter membrane, activated carbon, a second filter membrane, and a second filter screen stacked sequentially. The exhaust cleaning component 400 and the heating mechanism 300 operate at staggered times during use. The heating mechanism 300 heats the components first, and then the exhaust cleaning component 400 performs the cleaning process.

[0041] Specifically, in some embodiments, the conveying mechanism 200 (not shown in the figure) includes a drive motor, a rotating wheel, a driving chain, a driving roller, a driven chain, and at least one driven roller; the drive motor is drivenly connected to the rotating wheel; the rotating wheel is drivenly connected to the driving roller via the driving chain; the driving roller is drivenly connected to the driven roller via the driven chain; two adjacent driven rollers are drivenly connected via the driven chain. This structure can achieve smooth and stable conveying under the power source of a single drive motor, and reduces the cost of the power source.

[0042] Specifically, in some implementations, such as Figure 1 and 5 As shown, the spraying mechanism 100 includes a spray head 110, a delivery pipe 120, a liquid pump 130, and a storage tank 140; one end of the liquid pump 130 is connected to the interior of the storage tank 140; the other end of the liquid pump 130 is connected to one end of the delivery pipe 120; the other end of the delivery pipe 120 is connected to the inlet of the spray head 110; the outlet of the spray head 110 faces the delivery mechanism 200; and the output direction of the spray head 110 is perpendicular to the delivery direction of the delivery mechanism 200.

[0043] Specifically, in some implementations, such as Figure 1 and 6 As shown, the drying mechanism 500 includes a second housing 520 and a drying heating plate 510; the second housing 520 is provided with a drying cavity 522; the drying heating plate 510 is disposed inside the drying cavity 522; the second housing 520 is also provided with a second conveying channel 521; the second conveying channel 521 is disposed through the interior of the drying cavity 522; and the conveying mechanism 200 is disposed through the second conveying channel 521; the temperature of the drying heating plate 510 is 80℃ to 120℃.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An electrode cell separator spraying apparatus, characterized by: The device comprises a conveying mechanism and a spraying mechanism, a drying mechanism and a heating mechanism arranged in sequence along the conveying direction of the conveying mechanism; the conveying mechanism is used for conveying a diaphragm structure; the spraying mechanism is arranged above the conveying mechanism; the heating mechanism comprises at least one heating component; and an assembly gap is arranged between the heating component and the diaphragm structure.

2. The cell separator spray apparatus of claim 1, wherein: The temperature of the heating component is 40-80°C.

3. The cell separator spray apparatus of claim 1, wherein: The heating component is an infrared heater or a heating plate structure.

4. The cell separator spraying apparatus according to claim 1 or 2 or 3, characterized by: The assembly gap has the same size along the conveying direction of the conveying mechanism. Or the width of the assembly gap gradually decreases along the conveying direction of the conveying mechanism and is greater than 0.

5. The cell separator spray apparatus of claim 1, wherein: The heating mechanism further comprises a first shell; the inside of the first shell is provided with the heating cavity; the first shell is provided with a first conveying channel; the first conveying channel is arranged through the first shell along the conveying direction of the conveying mechanism and communicates with the heating cavity; and the heating component is arranged inside the heating cavity.

6. The cell separator spray apparatus of claim 5, wherein: The heating component comprises a heat-conducting plate, a heat-generating pipe and a mounting rack; the heat-conducting plate and the diaphragm structure form the assembly gap; the heat-generating pipe is connected to the side surface of the heat-conducting plate away from the diaphragm structure; One end of the mounting rack is connected to the heat-conducting plate; the other end of the mounting rack is connected to the inner top of the first shell.

7. The cell separator spraying apparatus according to claim 5 or 6, wherein: The inside of the first shell is further provided with an air extraction and cleaning assembly; the air extraction and cleaning assembly is arranged above the heating component and the conveyed diaphragm structure.

8. The cell separator spray apparatus of claim 7, wherein: The air extraction and cleaning assembly comprises a guide cover, an extraction pipe, an air extractor, a discharge pipe and a filter component; the guide cover is arranged inside the heating cavity and above the conveying mechanism; one end of the extraction pipe communicates with the guide cover; the other end of the extraction pipe communicates with one end of the air extractor; the other end of the air extractor communicates with one end of the discharge pipe; the other end of the discharge pipe penetrates through the first shell and communicates with the outside of the first shell; and the filter component is arranged inside the discharge pipe.

9. The cell separator spray apparatus of claim 1, wherein: The spraying mechanism comprises a spraying head, a conveying pipe, a liquid pump and a storage tank; one end of the liquid pump communicates with the inside of the storage tank; the other end of the liquid pump communicates with one end of the conveying pipe; the other end of the conveying pipe communicates with the input port of the spraying head; the output port of the spraying head faces the conveying mechanism; and the output direction of the spraying head is perpendicular to the conveying direction of the conveying mechanism.

10. The cell separator spray apparatus of claim 1, wherein: The conveying mechanism comprises a driving motor, a rotating wheel, a driving rotating chain, a driving roller, a driven rotating chain and at least one driven roller; the driving motor is drivingly connected with the rotating wheel; the rotating wheel is drivingly connected with the driving roller through the driving rotating chain; and the driving roller is drivingly connected with the driven roller through the driven rotating chain. And / or, the drying mechanism comprises a second shell and a drying heating plate; the second shell is provided with a drying cavity inside; the drying heating plate is arranged inside the drying cavity; the second shell is further provided with a second conveying channel; the second conveying channel is arranged through the inside of the drying cavity; and the conveying mechanism is arranged through the second conveying channel.

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