CN117885961A

CN117885961A - Coating device and coating method for battery cell

Info

Publication number: CN117885961A
Application number: CN202410289069.4A
Authority: CN
Inventors: 郑智健; 范翔; 王东升; 董慧华
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2024-03-14
Filing date: 2024-03-14
Publication date: 2024-04-16

Abstract

The embodiment of the application provides a coating device and a coating method of an electric core, wherein the coating method comprises the following steps: in response to the first transfer mechanism reaching the packaging film feeding bin, the control equipment controls the first sucker module to suck the packaging film in the packaging film feeding bin and controls the first transfer mechanism to transfer the packaging film to the hot melting mechanism; the control equipment monitors the vacuum pressure value of the first sucker module, judges that the packaging film falls off when the vacuum pressure value is lower than a set threshold value, and controls the first transfer mechanism to return to the packaging film feeding bin to suck the packaging film again; in response to the transfer of the packaging film to the hot melting mechanism, the control equipment controls the hot melting mechanism to pretreat the packaging film to obtain a pretreated packaging film; and controlling the second transfer mechanism to transfer the pretreatment packaging film to the coating mechanism, and controlling the coating mechanism to coat the pretreatment packaging film. The method and the device realize real-time monitoring on whether the packaging film falls off, solve the problem of abnormal quality of the battery cell caused by falling off of the packaging film, and improve the production efficiency of the battery cell.

Description

Coating device and coating method for battery cell

Technical Field

The application relates to the technical field of battery production, in particular to a coating device and a coating method for an electric core.

Background

This section is intended to provide a background or context for embodiments of the application. The description herein is not admitted to be prior art by inclusion in this section.

New energy batteries are increasingly used in life and industry, for example, new energy automobiles having a battery mounted therein have been widely used, and in addition, batteries are increasingly used in the field of energy storage and the like.

In the production process of the battery cell, a shell entering process is carried out after the assembly of the bare battery cell, and when the bare battery cell is placed in the shell, a layer of packaging film is coated on the outer surface of the bare battery cell in order to protect the bare battery cell and play an insulating function, and the packaging film is attached to different surfaces of the bare battery cell and avoids the extending position of the electrode lug. In the related art, in the process of automatically coating the packaging film, the packaging film is dropped to cause the abnormal quality of the battery cell, and the packaging film is manually processed after being dropped, so that the production efficiency is reduced.

Disclosure of Invention

Accordingly, the embodiment of the application is expected to provide a coating device and a coating method for a battery cell, which can solve the problem of abnormal quality of the battery cell caused by falling of a packaging film and improve the production efficiency of the battery cell.

To achieve the above objective, a first aspect of the embodiments of the present application provides a method for coating a battery cell, which is applied to a device for coating a battery cell, where the device includes a control device, a packaging film feeding bin, a first transfer mechanism with a first suction cup module, a second transfer mechanism, a hot melting mechanism, and a coating mechanism, and the method includes:

In response to the first transfer mechanism reaching the packaging film feeding bin, the control equipment controls the first sucker module to suck the packaging film in the packaging film feeding bin and controls the first transfer mechanism to transfer the packaging film to the hot melting mechanism;

The control equipment monitors the vacuum pressure value of the first sucker module, judges that the packaging film falls off when the vacuum pressure value is lower than a set threshold value, and controls the first transfer mechanism to return to the packaging film feeding bin to absorb the packaging film again;

in response to the transfer of the packaging film to the hot melting mechanism, the control equipment controls the hot melting mechanism to pretreat the packaging film to obtain a pretreated packaging film;

The control equipment controls the second transfer mechanism to transfer the pretreatment packaging film to the coating mechanism, and controls the coating mechanism to coat the pretreatment packaging film.

According to the method for coating the battery cell, firstly, after a first transfer mechanism reaches a packaging film feeding bin, a control device controls a first sucker module to absorb the packaging film in the packaging film feeding bin, then controls the first transfer mechanism to transfer the packaging film to a hot melting mechanism, and in the process that the first transfer mechanism transfers the packaging film to the hot melting mechanism, the control device monitors a vacuum pressure value of the first sucker module, if the vacuum pressure value is not lower than a set threshold value, the control device determines that the packaging film does not fall off, controls the first transfer mechanism to continuously transfer the packaging film to the hot melting mechanism until the packaging film is placed on the hot melting mechanism, and when the vacuum pressure value is lower than the set threshold value, determines that the packaging film falls off, controls the first transfer mechanism to return to the packaging film feeding bin, and absorbs the packaging film again. On the one hand, the control equipment monitors the vacuum pressure value of the first sucker module, so that whether the packaging film falls off or not is judged based on whether the vacuum pressure value is lower than a set threshold value, real-time monitoring on whether the packaging film falls off or not can be realized, and the problem of abnormal quality of the battery cell caused by falling of the packaging film is solved; on the other hand, after judging that the packaging film falls off, the control equipment returns to the packaging film feeding bin through controlling the first transfer mechanism, and the packaging film is sucked again, so that the abnormal condition of automatically processing the falling of the packaging film is realized, and the shutdown processing is not needed, thereby reducing the labor cost and improving the production efficiency of the battery cell.

In some embodiments, the hot melt mechanism comprises a hot melt platform and a hot melt suction cup assembly disposed on the hot melt platform;

And in response to the transfer of the packaging film to the hot melting mechanism, the control equipment controls the hot melting mechanism to pretreat the packaging film to obtain a pretreated packaging film, and the pretreatment packaging film comprises the following components:

In response to the packaging film being transferred to the hot-melt platform, the control equipment controls the hot-melt sucker assembly to suck the packaging film and monitors the vacuum pressure value of the hot-melt sucker assembly, and when the vacuum pressure value is lower than a set threshold value, the packaging film is judged to fall off;

And the control equipment controls the hot melting mechanism to pretreat the packaging film to obtain a pretreated packaging film.

Through setting up hot melt mechanism to including the hot melt platform and set up in the hot melt sucking disc subassembly of hot melt platform, can carry out the preliminary treatment to the packaging film at the hot melt platform to obtain the preliminary treatment packaging film. The hot melt sucking disc subassembly is used for adsorbing the packaging film, improves the unusual problem of quality of electric core because of the packaging film drops in the preliminary treatment in-process. The control device may be configured to monitor the vacuum pressure value of the hot melt suction cup assembly. It will be appreciated that when the vacuum pressure value of the hot melt suction cup assembly is below the set threshold value, the suction force of the hot melt suction cup assembly is reduced to be insufficient to suck the packaging film, thereby judging that the packaging film is detached.

In some embodiments, the coating device further comprises an alarm device, and the control device controls the alarm device to send an alarm signal when the control device monitors that the hot melt sucker assembly is at least once in the condition that the packaging film is detached.

Here, if the control equipment monitors that the packaging film falls off at least once, the packaging film coating device is likely to be broken down, and the alarm device sends out an alarm signal, so that an operator can go to the site to check and remove the fault, thereby being beneficial to timely removing obstacles and reducing the influence on the production efficiency as much as possible. For example, an operator may selectively take the encapsulation tool to a shutdown check.

In some embodiments, the second transfer mechanism has a second suction cup module;

the control device controls the second transfer mechanism to transfer the pre-treatment packaging film to the wrapping mechanism, comprising:

The control equipment controls the second sucker module to suck the pretreatment packaging film and controls the second transfer mechanism to transfer the pretreatment packaging film to the coating mechanism;

And the control equipment monitors the vacuum pressure value of the second sucker module, judges that the pretreatment packaging film falls off when the vacuum pressure value is lower than a set threshold value, and controls the second transfer mechanism to return to the hot melting mechanism to absorb the pretreatment packaging film again.

The control device may be configured to monitor the vacuum pressure value of the second suction cup module during transfer of the pre-treatment packaging film by the second transfer mechanism to the wrapping mechanism. Through setting up the second sucking disc module, can be at the in-process that second transfer mechanism shifted pretreatment packaging film to cladding mechanism, the second sucking disc module is used for adsorbing pretreatment packaging film, and when the vacuum pressure value of second sucking disc module was less than the settlement threshold value, lead to the adsorption affinity of second sucking disc module to reduce to insufficient absorption pretreatment packaging film to judge that pretreatment packaging film drops. The problem of the unusual quality of electric core that leads to because of pretreatment packaging film drops in the process of pretreatment packaging film shifts to cladding mechanism is improved.

In some embodiments, the coating device further comprises an alarm device, and the control device controls the alarm device to send an alarm signal when the second sucker module monitors that the pre-treatment packaging film falls off at least once.

Here, if the control device monitors that the second sucker die has the packaging film falling off at least once, the packaging film coating device is possibly broken down, and the alarm device sends out an alarm signal, so that an operator can go to the site to check and remove the fault, thereby being beneficial to timely removing the obstacle and reducing the influence on the production efficiency as much as possible. For example, an operator may selectively take the encapsulation tool to a shutdown check.

In some embodiments, the second transfer mechanism further comprises a first detection unit, and the control device controls the first detection unit to detect whether the pre-treatment packaging film on the second transfer mechanism is peeled off.

In the process that the second transfer mechanism transfers the pretreatment packaging film to the coating mechanism, the control equipment can control the first detection unit to detect whether the pretreatment packaging film on the second transfer mechanism falls off, so that the problem of abnormal quality of the battery cell caused by the falling-off of the pretreatment packaging film in the process that the pretreatment packaging film is transferred to the coating mechanism is solved.

In some embodiments, the first detection unit is a diffuse return detection switch.

In some embodiments, the coating mechanism includes a second detection unit;

the control of the wrapping mechanism to wrap the pretreatment packaging film includes:

In response to the pre-treatment packaging film being transferred to a coating station of the coating mechanism, the control device controls the coating mechanism to coat the pre-treatment packaging film;

And controlling the second detection unit to detect whether the pretreatment packaging film on the coating station falls off or not.

In the process of coating the pretreatment packaging film by the coating mechanism, the control equipment can control the second detection unit to detect whether the pretreatment packaging film on the coating mechanism falls off, so that the problem of abnormal quality of the battery cell caused by falling off of the pretreatment packaging film in the process of coating the pretreatment packaging film is solved.

In some embodiments, the second detection unit is a diffuse return detection switch.

In some embodiments, the film coating device further comprises an alarm device, and the control device controls the alarm device to send an alarm signal when the first sucker module monitors that the packaging film falls off at least once.

Here, if the control device monitors that the first sucker module has the packaging film falling off at least once, the packaging film coating device is likely to have faults, the alarm device sends out alarm signals, an operator can go to the site to check and remove the faults, the timely removal of the faults is facilitated, and the influence on the production efficiency is reduced as much as possible. For example, an operator may selectively take the encapsulation tool to a shutdown check.

A second aspect of an embodiment of the present application provides a device for coating a battery cell, including:

A control device;

the packaging film feeding bin is used for storing the packaging film;

the hot melting mechanism is used for preprocessing the packaging film to obtain a preprocessed packaging film;

the coating mechanism is used for coating the pretreatment packaging film;

The control equipment is used for controlling the first sucker module to suck the packaging film in the storage bin on the packaging film and controlling the first transfer mechanism to transfer the packaging film to the hot melting mechanism; the control equipment is also used for monitoring the vacuum pressure value of the first sucker module, judging that the packaging film falls off when the vacuum pressure value is lower than a set threshold value, controlling the first transfer mechanism to return to the packaging film feeding bin, and re-sucking the packaging film;

And the control equipment controls the second transfer mechanism to transfer the pretreatment packaging film to the coating mechanism.

According to the film coating device for the battery cell, firstly, after a first transfer mechanism reaches a packaging film feeding bin, a control device controls a first sucker module to absorb the packaging film in the packaging film feeding bin, then controls the first transfer mechanism to transfer the packaging film to a hot melting mechanism, and in the process that the first transfer mechanism transfers the packaging film to the hot melting mechanism, the control device monitors the vacuum pressure value of the first sucker module, if the vacuum pressure value is not lower than a set threshold value, the control device determines that the packaging film does not fall off, controls the first transfer mechanism to continuously transfer the packaging film to the hot melting mechanism until the packaging film is placed on the hot melting mechanism, and when the vacuum pressure value is lower than the set threshold value, determines that the packaging film falls off, controls the first transfer mechanism to return to the packaging film feeding bin, and absorbs the packaging film again. On the one hand, the control equipment monitors the vacuum pressure value of the first sucker module, so that whether the packaging film falls off or not is judged based on whether the vacuum pressure value is lower than a set threshold value, real-time monitoring on whether the packaging film falls off or not can be realized, and the problem of abnormal quality of the battery cell caused by falling of the packaging film is solved; on the other hand, after judging that the packaging film falls off, the control equipment returns to the packaging film feeding bin through controlling the first transfer mechanism, and the packaging film is sucked again, so that the abnormal condition of automatically processing the falling of the packaging film is realized, and the shutdown processing is not needed, thereby reducing the labor cost and improving the production efficiency of the battery cell.

the hot-melt platform is used for bearing the packaging film, the control equipment is used for controlling the hot-melt sucker assembly to absorb the packaging film and monitoring the vacuum pressure value of the hot-melt sucker assembly, and judging that the packaging film falls off when the vacuum pressure value is lower than a set threshold value.

Through setting up hot melt mechanism to including the hot melt platform and set up in the hot melt sucking disc subassembly of hot melt platform, can carry out the preliminary treatment to the packaging film at the hot melt platform to obtain the preliminary treatment packaging film. The hot melt sucking disc subassembly is used for adsorbing the packaging film, reduces the possibility that drops because of the packaging film at the in-process of preliminary treatment, and control equipment can be configured to control the vacuum pressure value of hot melt sucking disc subassembly, and when the vacuum pressure value of hot melt sucking disc subassembly was less than the settlement threshold value, it is not enough to adsorb the packaging film to lead to the adsorption affinity of hot melt sucking disc subassembly to reduce to judge that the packaging film drops, improves the problem that leads to the quality exception of electric core because of the packaging film drops at the in-process of preliminary treatment.

The control equipment is used for controlling the second sucker module to suck the pretreatment packaging film, monitoring the vacuum pressure value of the second sucker module, and judging that the pretreatment packaging film falls off when the vacuum pressure value is lower than a set threshold value.

The control device may be configured to monitor the vacuum pressure value of the second suction cup module during transfer of the pre-treatment packaging film by the second transfer mechanism to the wrapping mechanism. Through setting up the second sucking disc module, can be at the in-process that second transfer mechanism shifted pretreatment packaging film to cladding mechanism, the second sucking disc module is used for adsorbing pretreatment packaging film, improves the in-process that pretreatment packaging film shifted to cladding mechanism because of pretreatment packaging film drops and leads to the unusual problem of quality of electric core. The control device may be configured to monitor the vacuum pressure value of the second chuck module. It is understood that when the vacuum pressure value of the second sucker module is lower than the set threshold value, the adsorption force of the second sucker module is reduced to be insufficient to adsorb the pretreatment packaging film, so that the pretreatment packaging film is judged to fall off.

In some embodiments, the second transfer mechanism further comprises a first detection unit disposed on one side of the second suction cup module, the first detection unit configured to detect whether the pre-treatment packaging film on the second suction cup module is detached.

In some embodiments, the wrapping mechanism includes a wrapping station and a second detection unit disposed on one side of the wrapping station, the second detection unit configured to detect whether the pre-treated packaging film on the wrapping station is peeled off.

Drawings

Fig. 1 is a schematic implementation flow chart of a method for coating a battery cell according to an embodiment of the present application;

Fig. 2 is a schematic diagram of a device for coating a battery cell according to an embodiment of the present application;

FIG. 3 is a schematic view of a first transfer mechanism and a bin on a packaging film according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a second transfer mechanism according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a hot-melting mechanism according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a wrapping mechanism according to an embodiment of the application.

Description of the reference numerals

1. Feeding a packaging film into a bin; 2. a first transfer mechanism; 21. a first suction cup module; 22. a first linear module; 3. a second transfer mechanism; 31. a second sucker module; 32. a first detection unit; 33. a second linear module; 4. a hot melting mechanism; 41. a hot melting platform; 42. a hot melt suction cup assembly; 5. a cladding mechanism; 51. a second detection unit; 52. a coating section; 53. a third linear module; 10. a coating device; 20. and (5) packaging films.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

Unless defined otherwise, 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," "third," etc. are used merely to distinguish between different objects and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" generally indicates that the associated object is an "or" relationship.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", "height direction", "first direction", "second direction", etc. are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the embodiments of the present application and for simplifying the description, but do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured, operated, or used in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the term "contact" is to be understood in a broad sense as either direct contact or contact across an intermediate layer, as either contact with substantially no interaction force between the two in contact or contact with interaction force between the two in contact.

With the development of clean energy, more and more devices use electric energy as driving energy, and further, as a power battery capable of storing more electric energy and being charged and discharged repeatedly, for example, a lithium ion battery is rapidly developed. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and various fields such as aerospace and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

In the embodiment of the application, the battery cell can be a single battery. The battery cell is a basic unit capable of realizing the mutual conversion of chemical energy and electric energy, and can be used for manufacturing a battery module or a battery pack so as to supply power to an electric device. The battery cell may be a primary battery or a secondary battery, and the secondary battery refers to a battery cell that can be continuously used by activating an active material in a charging manner after the battery cell is discharged. The battery cell may be a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, or a lead storage battery, which is not limited by the embodiment of the application. The battery cells may be cylindrical, rectangular, or other shapes, etc. It is understood that the battery cell in the embodiment of the present application refers to a battery cell having a rectangular parallelepiped shape.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive plate, a negative plate and a separation membrane. The battery cell mainly relies on metal ions to move between the positive and negative electrode plates to operate. The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The material of the separator may be PP (Polypropylene) or PE (Polyethylene).

The battery cell also comprises a packaging film and a shell, wherein the packaging film is coated outside the electrode assembly, and the shell encapsulates the electrode assembly (namely the bare cell) coated with the packaging film to form the battery cell. For example, the packaging film may be a mylar film (mylar film), and the shell may be an aluminum or steel shell, or the like. After the electrode assembly is wound and formed, the Mylar coating process and the shell entering process are carried out to complete the encapsulation of the Mylar and the shell. The Mylar film has the functions of sealing and protecting the electrode assembly, and can effectively insulate the electrode assembly and the shell from each other, so that the internal short circuit of the battery cell is avoided. The shell plays a role in protection.

In the related art, in the production process of the battery cell, a shell entering procedure is arranged after the assembly of the bare battery cell, and when the bare battery cell is put into a shell, a layer of packaging film is coated on the outer surface of the bare battery cell in order to protect the bare battery cell and play an insulating function, and the packaging film is attached to different surfaces of the bare battery cell and avoids the extending position of the tab. In the related art, in the process of automatically coating the packaging film, the packaging film is dropped to cause the abnormal quality of the battery cell, and the packaging film is manually processed after being dropped, so that the production efficiency is reduced.

The embodiment of the application provides a coating method of a battery cell, which is applied to a coating device 10 of the battery cell, wherein the coating device 10 comprises control equipment, a packaging film feeding bin 1, a first transfer mechanism 2 with a first sucker module 21, a second transfer mechanism 3, a hot melting mechanism 4 and a coating mechanism 5.

Fig. 1 is a schematic implementation flow chart of a method for coating a battery cell according to an embodiment of the present application, as shown in fig. 1, the method for coating a battery cell includes steps S101 to S104 as follows:

And step S101, in response to the first transfer mechanism reaching the packaging film feeding bin, the control equipment controls the first sucker module to suck the packaging film in the packaging film feeding bin and controls the first transfer mechanism to transfer the packaging film to the hot melting mechanism.

Here, the control device is used for controlling the operation processes of the packaging film feeding bin 1, the first transfer mechanism 2, the first sucker module 21, the second transfer mechanism 3, the hot melting mechanism 4 and the coating mechanism 5. The control device may include, but is not limited to, at least one of an industrial personal computer, a programmable logic controller (Programmable Logic Controller, PLC), an upper computer, etc. The host computer may be, for example, a server, a notebook computer, a tablet computer, a desktop computer, a smart phone, or the like.

Here, the specific structure of the packaging film feeding bin 1 is not limited herein, and the packaging film feeding bin 1 is used to store the packaging films 20, for example, a plurality of packaging films 20 are stacked in the packaging film feeding bin 1.

The plurality of the embodiments of the present application refers to two or more.

Here, the specific structure of the first suction cup module 21 is not limited herein, and in some embodiments, referring to fig. 2 and 3, the first suction cup module 21 includes at least one suction cup, and the suction cup is attached to the packaging film 20.

Of course, the first transferring mechanism 2 may further include a first moving module, where the first moving module drives the first suction cup module 21 to move, for example, the first suction cup module 21 may be driven to move in a height direction and in a horizontal plane.

Step S102, the control equipment monitors the vacuum pressure value of the first sucker module, judges that the packaging film falls off when the vacuum pressure value is lower than a set threshold value, and controls the first transfer mechanism to return to the packaging film feeding bin, and re-sucks the packaging film.

The control device may be configured to monitor the vacuum pressure value of the first suction cup module 21 during the transfer of the packaging film 20 by the first transfer mechanism 2 to the thermo-fusion mechanism 4. It will be appreciated that the vacuum pressure of the first chuck module 21 refers to the force per unit area of the vacuum force generated by the chuck. Vacuum pressure is typically measured in pascals (Pa). The vacuum pressure of the suction cup is provided by a vacuum source connected to the suction cup, which draws air from within the suction cup to create a vacuum. The magnitude of the vacuum pressure of the chuck depends on the pumping capacity of the vacuum source and the design parameters of the chuck. It should be noted that the greater the vacuum pressure, the greater the suction force, but at the same time the contact force between the chuck and the workpiece is increased, and the proper vacuum pressure needs to be selected according to the actual requirements. Thus, when the vacuum pressure value of the first suction cup module 21 is lower than the set threshold value, the suction force of the first suction cup module 21 is reduced to be insufficient to suck the packaging film 20, thereby judging that the packaging film 20 is detached.

After judging that the packaging film 20 falls off, the control equipment returns to the packaging film feeding bin 1 through controlling the first transfer mechanism 2 to absorb the packaging film 20 again, so that the abnormal condition that the packaging film 20 falls off is automatically treated without stopping the machine, the labor cost is reduced, and the production efficiency of the battery cell is improved.

And step S103, in response to the transfer of the packaging film to the hot melting mechanism, the control equipment controls the hot melting mechanism to pretreat the packaging film to obtain a pretreated packaging film.

There are various ways in which the hot melt mechanism 4 may pre-process the packaging film 20, and in some embodiments, referring to fig. 5, the packaging film 20 and the shoe are adhered to each other on the hot melt mechanism 4 to form a pre-processed packaging film 20.

In some embodiments, step S103 may further comprise a rubberizing step, i.e. rubberizing on the pre-treated packaging film 20.

Step S104, the control equipment controls the second transfer mechanism to transfer the pretreatment packaging film to the coating mechanism, and controls the coating mechanism to coat the pretreatment packaging film.

Here, referring to fig. 6, the wrapping mechanism 5 wraps the pre-treatment packaging film 20, and the wrapping mechanism 5 wraps the pre-treatment packaging film 20 on the outer surface of the bare cell to form the cell.

According to the method for coating the battery cells, firstly, after a first transfer mechanism 2 reaches a packaging film feeding bin 1, a control device controls a first sucker module 21 to suck a packaging film 20 in the packaging film feeding bin 1, then controls the first transfer mechanism 2 to transfer the packaging film 20 to a hot melting mechanism 4, and monitors a vacuum pressure value of the first sucker module 21 in the process that the first transfer mechanism 2 transfers the packaging film 20 to the hot melting mechanism 4, if the vacuum pressure value is not lower than a set threshold value, the control device judges that the packaging film 20 does not fall off, then controls the first transfer mechanism 2 to continuously transfer the packaging film 20 to the hot melting mechanism 4 until the packaging film 20 is placed on the hot melting mechanism 4, and when the vacuum pressure value is lower than the set threshold value, judges that the packaging film 20 falls off, and controls the first transfer mechanism 2 to return to the packaging film feeding bin 1, and sucks the packaging film 20 again. Thus, on one hand, the control device monitors the vacuum pressure value of the first sucker module 21, so that whether the packaging film 20 falls off is judged based on whether the vacuum pressure value is lower than a set threshold value, and real-time monitoring on whether the packaging film 20 falls off can be realized, so that the problem of abnormal quality of the battery cell caused by falling off of the packaging film 20 is solved; on the other hand, after judging that the packaging film 20 falls off, the control equipment returns to the packaging film feeding bin 1 through controlling the first transfer mechanism 2 to absorb the packaging film 20 again so as to automatically treat the abnormal condition that the packaging film 20 falls off without stopping the machine, thereby reducing the labor cost and improving the production efficiency of the battery cell.

In some embodiments, referring to fig. 5, the hot melt mechanism 4 includes a hot melt platform 41 and a hot melt suction cup assembly 42 disposed on the hot melt platform 41.

The above step S103 may include the following steps S111 to S112:

step S111, responding to the transfer of the packaging film to the hot melting platform, controlling the hot melting sucker assembly to absorb the packaging film by the control equipment, monitoring the vacuum pressure value of the hot melting sucker assembly, and judging that the packaging film falls off when the vacuum pressure value is lower than a set threshold value;

And step S112, the control equipment controls the hot melting mechanism to pretreat the packaging film to obtain a pretreated packaging film.

By providing the heat-fusing mechanism 4 to include the heat-fusing table 41 and the heat-fusing chuck assembly 42 provided to the heat-fusing table 41, the packaging film 20 can be pre-treated at the heat-fusing table 41, and the pre-treated packaging film 20 can be obtained. The hot melt sucking disc component 42 is used for sucking the packaging film 20, so as to solve the problem of abnormal quality of the battery cell caused by falling of the packaging film 20 in the pretreatment process.

The particular configuration of the hot melt suction cup assembly 42 is not limited herein, and in some embodiments, the hot melt suction cup assembly 42 includes at least one suction cup by which it is attached to the packaging film 20.

The control device may be configured to monitor the vacuum pressure value of the hot melt suction cup assembly. It will be appreciated that when the vacuum pressure value of the hot melt suction cup assembly is below the set threshold value, the suction force of the hot melt suction cup assembly is reduced to be insufficient to suck the packaging film 20, thereby determining that the packaging film 20 is peeled off.

In some embodiments, the encapsulation tool 10 further comprises an alarm device.

The specific type of the alarm device is not limited herein, and may be, for example, an alarm signal such as vibration, light, sound, or the like.

In some embodiments, after the alarm device sends out the alarm signal, the coating device 10 can be stopped for checking, so that the obstacle is eliminated in time, and the influence on the production efficiency is reduced as much as possible.

The step S103 may include the following step S113:

The control device monitors that the package film 20 falls off at least once in the hot melt sucker assembly, and controls the alarm device to send out an alarm signal.

Here, if the control device monitors that the package film 20 falls off at least once, it indicates that the film wrapping device 10 may fail, and the alarm device sends an alarm signal, so that an operator can go to the site to check and remove the failure, which is beneficial to timely removing the obstacle and reducing the influence on the production efficiency as much as possible. Illustratively, an operator may selectively take the encapsulation tool 10 to a shutdown check.

Illustratively, if the control device monitors the hot melt suction cup assembly for three consecutive occurrences of the packaging film 20 peeling, the control alarm device issues an alarm signal.

In some embodiments, referring to fig. 4, the second transfer mechanism 3 has a second chuck module 31.

The step S104 may include the following steps S121 to S122:

step S121, controlling a second sucking disc module to suck the pretreatment packaging film by the control equipment, and controlling a second transferring mechanism to transfer the pretreatment packaging film to the coating mechanism;

and step S122, the control equipment monitors the vacuum pressure value of the second sucker module, judges that the pretreatment packaging film falls off when the vacuum pressure value is lower than a set threshold value, and controls the second transfer mechanism to return to the hot melting mechanism to absorb the pretreatment packaging film again.

The control device may be configured to monitor the vacuum pressure value of the second suction cup module 31 during transfer of the pre-treated packaging film 20 by the second transfer mechanism 3 to the wrapping mechanism 5. Through setting up second sucking disc module 31, can be at the in-process that second transfer mechanism 3 will preprocess packaging film 20 to cladding mechanism 5 transfer, second sucking disc module 31 is used for adsorbing preprocess packaging film 20, improves the in-process that preprocess packaging film 20 is transferred to cladding mechanism 5 because of preprocess packaging film 20 drops and leads to the unusual problem of quality of electric core.

Here, the specific structure of the second suction cup module 31 is not limited herein, and in some embodiments, referring to fig. 4, the second suction cup module 31 includes at least one suction cup, and the suction cup is attached to the packaging film 20.

The control device may be configured to monitor the vacuum pressure value of the second suction cup module 31. It will be appreciated that when the vacuum pressure value of the second suction cup module 31 is lower than the set threshold value, the suction force of the second suction cup module 31 is reduced to be insufficient to suck the pre-treatment packaging film 20, so as to determine that the pre-treatment packaging film 20 is detached.

The step S104 may include the following step S123:

The control device monitors that the second sucker module 31 at least once drops off the pretreatment packaging film 20, and controls the alarm device to send out an alarm signal.

Here, if the control device monitors that the second suction cup die is at least once fallen off the packaging film 20, it indicates that the packaging film coating device 10 may malfunction, and the alarm device sends an alarm signal, so that an operator can go to the site to check and remove the malfunction, which is beneficial to timely removing the obstacle and reducing the influence on the production efficiency as much as possible. Illustratively, an operator may selectively take the encapsulation tool 10 to a shutdown check.

In some embodiments, referring to fig. 4, the second transferring mechanism 3 further includes a first detecting unit 32. The control device controls the first detecting unit 32 to detect whether the pre-treatment packaging film 20 on the second transfer mechanism 3 is peeled off.

In the process of transferring the pretreatment packaging film 20 to the coating mechanism 5 by the second transferring mechanism 3, the control device can control the first detecting unit 32 to detect whether the pretreatment packaging film 20 on the second transferring mechanism 3 falls off, so that the problem of abnormal quality of the battery core caused by falling off of the pretreatment packaging film 20 in the process of transferring the pretreatment packaging film 20 to the coating mechanism 5 is solved.

In some embodiments, the control device may further improve the problem of abnormal quality of the battery core caused by the falling of the pre-treatment packaging film 20 in the process of transferring the pre-treatment packaging film 20 to the coating mechanism 5 by monitoring the vacuum pressure value of the second suction cup module 31 and controlling the first detection unit 32 to detect whether the pre-treatment packaging film 20 on the second transferring mechanism 3 falls off at the same time when determining whether the pre-treatment packaging film 20 falls off based on whether the vacuum pressure value is lower than the set threshold value or not, that is, by monitoring whether the pre-treatment packaging film 20 falls off through the second suction cup module 31 and the first detection unit 32 at the same time.

The particular type of first detection unit 32 is not limited herein, and in some embodiments, first detection unit 32 may be a diffuse return detection switch. In other embodiments, the first detection unit 32 may be a CCD visual detection system or the like.

In some embodiments, referring to fig. 6, the wrapping mechanism 5 includes a second detecting unit 51.

The step S104 may include the following steps S124 to S125:

Step S124, in response to the transfer of the pretreatment packaging film to a coating station of the coating mechanism, the control equipment controls the coating mechanism to coat the pretreatment packaging film;

step S125, controlling a second detection unit to detect whether the pretreatment packaging film on the coating station falls off.

In the process of coating the pretreatment packaging film 20 by the coating mechanism 5, the control device can control the second detection unit 51 to detect whether the pretreatment packaging film 20 on the coating mechanism 5 falls off, so that the problem of abnormal quality of the battery cell caused by falling off of the pretreatment packaging film 20 in the process of coating the pretreatment packaging film 20 is solved.

The specific type of the second detecting unit 51 is not limited herein, and in some embodiments, referring to fig. 6, the second detecting unit 51 may be a diffuse return detecting switch. In other embodiments, the second detection unit 51 may be a CCD visual detection system or the like.

In some embodiments, the coating apparatus 10 further includes an alarm device, and the control device monitors that the first sucker module 21 at least once has the packaging film 20 fall off, and controls the alarm device to send an alarm signal.

Here, if the control device monitors that the first suction cup module 21 has the packaging film 20 falling off at least once, it indicates that the packaging film coating device 10 may have a fault, and the alarm device sends an alarm signal, so that an operator can go to the site to check and remove the fault, which is beneficial to timely removing the obstacle and reducing the influence on the production efficiency as much as possible. Illustratively, an operator may selectively take the encapsulation tool 10 to a shutdown check.

In a specific embodiment, the method for coating the battery cell comprises the following implementation method steps:

step S131, in response to the first transfer mechanism reaching the packaging film feeding bin, the control equipment controls the first sucker module to suck the packaging film in the packaging film feeding bin and controls the first transfer mechanism to transfer the packaging film to the hot melting mechanism;

step S132, the control equipment monitors the vacuum pressure value of the first sucker module, judges that the packaging film falls off when the vacuum pressure value is lower than a set threshold value, and controls the first transfer mechanism to return to a packaging film feeding bin so as to suck the packaging film again;

step S133, responding to the transfer of the packaging film to a hot melting platform of a hot melting mechanism, controlling a hot melting sucker assembly of the hot melting mechanism to absorb the packaging film by control equipment, monitoring a vacuum pressure value of the hot melting sucker assembly, and judging that the packaging film falls off when the vacuum pressure value is lower than a set threshold value;

Step S134, the control equipment controls the hot melting mechanism to pretreat the packaging film to obtain a pretreated packaging film;

Step S135, the control equipment controls the second sucker module to suck the pretreatment packaging film and controls the second transfer mechanism to transfer the pretreatment packaging film to the coating mechanism;

Step S136, the control equipment monitors the vacuum pressure value of the second sucker module, judges that the pretreatment packaging film falls off when the vacuum pressure value is lower than a set threshold value, and controls the second transfer mechanism to return to the hot melting mechanism to absorb the pretreatment packaging film again;

Step S137, the control device controls the first detection unit of the second transfer mechanism to detect whether the pretreatment packaging film on the second transfer mechanism falls off; wherein, step S136 and step S137 may be performed simultaneously;

Step S138, in response to the transfer of the pretreatment packaging film to a coating station of a coating mechanism, the control equipment controls the coating mechanism to coat the pretreatment packaging film;

step S139, a second detection unit of the control coating mechanism detects whether the pretreatment packaging film on the coating station falls off.

Referring to fig. 2 to 6, the coating device 10 of the present application includes a control device, a packaging film feeding bin 1, a hot melting mechanism 4, a first transfer mechanism 2 having a first suction cup module 21, a second transfer mechanism 3, and a coating mechanism 5. The packaging film feeding bin 1 is used for storing packaging films 20. The hot melting mechanism 4 is used for preprocessing the packaging film 20 to obtain a preprocessed packaging film 20. The wrapping mechanism 5 is used for wrapping the pretreatment packaging film 20. The control device is used for controlling the first sucking disc module 21 to suck the packaging film 20 in the packaging film feeding bin 1 and controlling the first transferring mechanism 2 to transfer the packaging film 20 to the hot melting mechanism 4. The control device is also used for monitoring the vacuum pressure value of the first sucker module 21, judging that the packaging film 20 falls off when the vacuum pressure value is lower than a set threshold value, and controlling the first transfer mechanism 2 to return to the packaging film feeding bin 1 so as to suck the packaging film 20 again. The control device controls the second transfer mechanism 3 to transfer the pre-treated packaging film 20 to the wrapping mechanism 5.

Here, the specific structure of the first suction cup module 21 is not limited herein, and in some embodiments, referring to fig. 3, the first suction cup module 21 includes at least one suction cup, and the suction cup is attached to the packaging film 20.

For example, referring to fig. 3, the first transfer mechanism 2 further includes a first linear module 22, and the first transfer mechanism 2 drives the first chuck module 21 through the first linear module 22. Specifically, the first transfer mechanism 2 drives the first suction cup module 21 to move in the height direction through the first linear module 22.

Here, the wrapping mechanism 5 wraps the pre-treatment packaging film 20 means that the wrapping mechanism 5 wraps the pre-treatment packaging film 20 on the outer surface of the bare cell to form the cell.

According to the film coating device for the battery cell, firstly, after the first transfer mechanism 2 reaches the packaging film feeding bin 1, the control device controls the first sucker module 21 to suck the packaging film 20 in the packaging film feeding bin 1, then controls the first transfer mechanism 2 to transfer the packaging film 20 to the hot melting mechanism 4, and monitors the vacuum pressure value of the first sucker module 21 in the process that the first transfer mechanism 2 transfers the packaging film 20 to the hot melting mechanism 4, if the vacuum pressure value is not lower than a set threshold value, the control device judges that the packaging film 20 does not fall off, controls the first transfer mechanism 2 to continuously transfer the packaging film 20 to the hot melting mechanism 4 until the packaging film 20 is placed on the hot melting mechanism 4, and when the vacuum pressure value is lower than the set threshold value, judges that the packaging film 20 falls off, and controls the first transfer mechanism 2 to return to the packaging film feeding bin 1, and sucks the packaging film 20 again. Thus, on one hand, the control device monitors the vacuum pressure value of the first sucker module 21, so that whether the packaging film 20 falls off is judged based on whether the vacuum pressure value is lower than a set threshold value, and real-time monitoring on whether the packaging film 20 falls off can be realized, so that the problem of abnormal quality of the battery cell caused by falling off of the packaging film 20 is solved; on the other hand, after judging that the packaging film 20 falls off, the control equipment returns to the packaging film feeding bin 1 through controlling the first transfer mechanism 2 to absorb the packaging film 20 again so as to automatically treat the abnormal condition that the packaging film 20 falls off without stopping the machine, thereby reducing the labor cost and improving the production efficiency of the battery cell.

In some embodiments, referring to fig. 5, the hot melt mechanism 4 includes a hot melt platform 41 and a hot melt suction cup assembly 42 disposed on the hot melt platform 41. The hot melt stage 41 is used to carry the packaging film 20. The control device is used to control the hot melt suction cup assembly 42 to suck the packaging film 20 and to monitor the vacuum pressure value of the hot melt suction cup assembly. When the vacuum pressure value is lower than the set threshold value, it is determined that the packaging film 20 is peeled off.

By providing the heat-fusing mechanism 4 to include the heat-fusing table 41 and the heat-fusing chuck assembly 42 provided to the heat-fusing table 41, the packaging film 20 can be pre-treated at the heat-fusing table 41, and the pre-treated packaging film 20 can be obtained. The hot melt sucking disc component 42 is used for sucking the packaging film 20, so that the possibility of falling off of the packaging film 20 in the pretreatment process is reduced, the control equipment can be configured to monitor the vacuum pressure value of the hot melt sucking disc component, and when the vacuum pressure value of the hot melt sucking disc component is lower than a set threshold value, the suction force of the hot melt sucking disc component is reduced to be insufficient for sucking the packaging film 20, thereby judging that the packaging film 20 falls off and improving the problem of abnormal quality of a battery core caused by falling off of the packaging film 20 in the pretreatment process.

In some embodiments, referring to fig. 4, the second transfer mechanism 3 has a second chuck module 31. The control device is used for controlling the second sucking disc module 31 to suck the pretreatment packaging film 20 and monitoring the vacuum pressure value of the second sucking disc module 31, and judging that the pretreatment packaging film 20 falls off when the vacuum pressure value is lower than a set threshold value.

The specific structure of the second suction cup module 31 is not limited herein, and in some embodiments, the second suction cup module 31 includes at least one suction cup, and the suction cup is attached to the packaging film 20.

The control device may be configured to monitor the vacuum pressure value of the second suction cup module 31 during transfer of the pre-treated packaging film 20 by the second transfer mechanism 3 to the wrapping mechanism 5. Through setting up second sucking disc module 31, can be at the in-process that second transfer mechanism 3 will preprocess packaging film 20 to cladding mechanism 5 transfer, second sucking disc module 31 is used for adsorbing preprocess packaging film 20, improves the in-process that preprocess packaging film 20 is transferred to cladding mechanism 5 because of preprocess packaging film 20 drops and leads to the unusual problem of quality of electric core. The control device may be configured to monitor the vacuum pressure value of the second suction cup module 31. It will be appreciated that when the vacuum pressure value of the second suction cup module 31 is lower than the set threshold value, the suction force of the second suction cup module 31 is reduced to be insufficient to suck the pre-treatment packaging film 20, so as to determine that the pre-treatment packaging film 20 is detached.

In some embodiments, referring to fig. 4, the second transferring mechanism 3 further includes a first detecting unit 32 disposed on one side of the second suction cup module 31, where the first detecting unit 32 is configured to detect whether the pre-processing packaging film 20 on the second suction cup module 31 falls off.

The specific type of the first detecting unit 32 is not limited herein, and in some embodiments, referring to fig. 4, the first detecting unit 32 may be a trip detecting switch. In other embodiments, the first detection unit 32 may be a CCD visual detection system or the like.

In the process of transferring the pretreatment packaging film 20 to the coating mechanism 5 by the second transferring mechanism 3, the control device can control the first detecting unit 32 to detect whether the pretreatment packaging film 20 on the second sucker module 31 falls off, so as to solve the problem of abnormal quality of the battery core caused by falling off of the pretreatment packaging film 20 in the process of transferring the pretreatment packaging film 20 to the coating mechanism 5.

For example, referring to fig. 4, the second transferring mechanism 3 further includes a second linear module 33, and the second transferring mechanism 3 drives the second chuck module 31 through the second linear module 33. Specifically, the second transfer mechanism 3 drives the second suction cup module 31 to move in the height direction through the second linear module 33.

In some embodiments, referring to fig. 6, the wrapping mechanism 5 includes a wrapping station and a second detecting unit 51 disposed at one side of the wrapping station, and the control device is configured to control the second detecting unit 51 to detect whether the pre-treated packaging film 20 on the wrapping station falls off.

For example, referring to fig. 6, the coating mechanism 5 includes a third linear module 53 and a coating portion 52, and the coating mechanism 5 drives the coating portion 52 through the third linear module 53 to coat the battery cells.

In the description of the present application, reference to the term "one embodiment," "in some embodiments," "in other embodiments," "in yet other embodiments," or "exemplary" etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In the present application, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described in the present application and the features of the various embodiments or examples may be combined by those skilled in the art without contradiction.

The above description is only illustrative of the application and is not intended to limit the same, but rather various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. The utility model provides a diolame method of electric core, characterized in that is applied to diolame device, diolame device includes control equipment, packaging film goes up feed bin, has first transfer mechanism, second transfer mechanism, hot melt mechanism and cladding mechanism of first sucking disc module, diolame method includes:

2. The method of claim 1, wherein the hot-melt mechanism comprises a hot-melt platform and a hot-melt chuck assembly disposed on the hot-melt platform;

3. The method for coating a battery cell according to claim 2, wherein the coating device further comprises an alarm device, and the control device controls the alarm device to send an alarm signal when the control device monitors that the packaging film is detached at least once from the hot melt suction cup assembly.

4. The method of claim 1, wherein the second transfer mechanism has a second chuck module;

5. The method according to claim 4, wherein the coating device further comprises an alarm device, and the control device controls the alarm device to send an alarm signal when the second sucker module monitors that the pre-treatment packaging film falls off at least once.

6. The method of claim 1, wherein the second transfer mechanism further comprises a first detection unit, and the control device controls the first detection unit to detect whether the pre-treatment packaging film on the second transfer mechanism is peeled off.

7. The method of claim 6, wherein the first detection unit is a diffuse return detection switch.

8. The method of claim 1, wherein the coating mechanism comprises a second detection unit;

9. The method of claim 8, wherein the second detection unit is a diffuse return detection switch.

10. The method for coating a battery cell according to claim 1, wherein the coating device further comprises an alarm device, and the control device controls the alarm device to send an alarm signal when the first sucker module monitors that the packaging film falls off at least once.

11. The utility model provides a diolame device of electric core which characterized in that includes:

A control device;

the packaging film feeding bin is used for storing the packaging film;

the coating mechanism is used for coating the pretreatment packaging film;

12. The cell encapsulation apparatus of claim 11, wherein the hotmelt mechanism comprises a hotmelt platform and a hotmelt suction cup assembly disposed on the hotmelt platform;

13. The cell encapsulation apparatus of claim 11, wherein the second transfer mechanism has a second chuck module;

14. The battery cell encapsulation device of claim 13, wherein the second transfer mechanism further comprises a first detection unit disposed on one side of the second suction cup module, the first detection unit configured to detect whether the pre-treatment packaging film on the second suction cup module is detached; and/or the number of the groups of groups,

The coating mechanism comprises a coating station and a second detection unit arranged on one side of the coating station, and the second detection unit is configured to detect whether the pretreatment packaging film on the coating station falls off or not.