CN116374268A

CN116374268A - Film coating device and film coating equipment

Info

Publication number: CN116374268A
Application number: CN202310107616.8A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-07-04

Abstract

The invention relates to a coating device and coating equipment. The coating device comprises: the support mechanism is provided with a first support surface for supporting the battery cell, and a protective film is arranged between the first support surface and the battery cell; the coating mechanism is provided with a first roller and a second roller, and the first roller and the second roller are respectively positioned at two sides of the first supporting surface in the first preset direction and are used for supporting the protective film together with the first supporting surface; the first roller and the second roller are respectively used for being abutted with the two side surfaces of the battery cell in the first preset direction and rolling from the bottom of the battery cell to the top of the battery cell. Therefore, the first roller and the second roller are utilized to wrap the protective film on the surface of the battery cell in a rolling manner along the surface of the battery cell, the battery cell is not required to be driven to turn over, the structure is simple, the occupied space is greatly reduced, and the problem of insufficient coating space is avoided.

Description

Film coating device and film coating equipment

Technical Field

The invention relates to the technical field of battery manufacturing equipment, in particular to a coating device and coating equipment.

Background

In the process of power battery production, in order to protect the surface of the battery cell, a protective film needs to be wrapped on the surface of the battery cell. The protective film can be a Mylar film (also called Mylar film, english name), and has the characteristics of high surface flatness, good transparency and strong mechanical flexibility.

Conventionally, the protective film is often wrapped on each side of the battery cell by driving the battery cell to turn over. However, the turnover mechanism for driving the battery cell to turn over is complex in structure, and for the battery cell with larger size, such as a battery cell of a blade battery, the space occupied in the turnover process is larger, so that the problem of insufficient turnover coating space is easy to occur.

Disclosure of Invention

Based on this, it is necessary to carry out the diolame to adopt the mode of driving the battery core upset among the prior art, and tilting mechanism structure is complicated, and the required space that occupies in the in-process of upset is great, appears overturning the problem that diolame space is not enough easily, provides a diolame device and diolame equipment of improvement above-mentioned defect.

A coating apparatus comprising:

the support mechanism is provided with a first support surface for supporting the battery cell, and a protective film is arranged between the first support surface and the battery cell; and

The coating mechanism is provided with a first roller and a second roller, and the first roller and the second roller are respectively positioned at two sides of the first supporting surface in a first preset direction and are used for supporting the protective film together with the first supporting surface;

the first roller and the second roller are respectively used for being abutted with the two side surfaces of the battery cell in the first preset direction, and can roll from the bottom of the battery cell to the top of the battery cell in a controlled manner.

In one embodiment, the support mechanism further includes a second support surface and a third support surface, the second support surface is located at a side of the first roller facing away from the first support surface, the third support surface is located at a side of the second roller facing away from the first support surface, the second support surface, the third support surface, the first roller and the second roller are used for supporting the protective film together, and the second support surface and the third support surface are capable of adsorbing the protective film.

In one embodiment, the first roller and the second roller are also controllably movable toward and away from each other.

In one embodiment, the coating mechanism further comprises a moving assembly, wherein the moving assembly comprises a first lifting seat, a first moving seat, a second moving seat, a first elastic piece and a spreading driving piece;

the first lifting seat is connected to the supporting mechanism in a lifting manner, the first moving seat and the second moving seat are both movably connected to the first lifting seat along the first preset direction, the first roller is mounted on the first moving seat, and the second roller is mounted on the second moving seat; the first elastic piece is connected between the first motion seat and the second motion seat, so that the first roller and the second roller have a motion trend of approaching each other under the action of the elastic force provided by the first elastic piece; the opening driving piece is connected between the first moving seat and the second moving seat and is used for providing driving force for driving the first roller and the second roller to be far away from each other.

In one embodiment, the motion assembly further comprises a first mounting block, the first roller being mounted on the first motion seat by the first mounting block;

the top surface of the first mounting block and/or the top surface of the first motion seat together form a fourth supporting surface for supporting the protective film.

In one embodiment, the first mounting block has a first pacifying plane as its bottom surface;

when the first roller rolls to the top of the battery cell, the first smoothing plane is attached to the top surface of the battery cell, so that the protective film on the top surface of the battery cell is smoothed.

In one embodiment, the motion assembly further comprises a second mounting block, the second roller being mounted on the second motion seat by the second mounting block;

the top surface of the second mounting block and/or the top surface of the second motion seat together form a fifth supporting surface for supporting the protective film.

In one embodiment, the second mounting block has a second pacifying plane as its bottom surface;

when the second roller rolls to the top of the battery cell, the second smoothing plane is attached to the top surface of the battery cell, so that the protective film on the top surface of the battery cell is smoothed.

In one embodiment, the first support surface is capable of absorbing the protective film.

In one embodiment, the coating device further comprises a first positioning mechanism and a second positioning mechanism which are both arranged on the supporting mechanism, wherein the first positioning mechanism and the second positioning mechanism are respectively positioned at two sides of the first supporting surface in a second preset direction, and the second preset direction is intersected with the first preset direction;

the first positioning mechanism is provided with a first clamping part, the second positioning mechanism is provided with a second clamping part, and the first clamping part and the second clamping part can be controlled to be close to or far away from each other so as to clamp or unclamp the battery cell along the second preset direction.

In one embodiment, the first positioning mechanism further has a first pressing portion configured to perform a lowering motion to press the battery cell on the first supporting surface when the first clamping portion moves close to the second clamping portion; when the first clamping part moves away from the second clamping part, the first pressing part moves upwards so as to be separated from the battery cell.

In one embodiment, the first positioning mechanism comprises a second lifting seat, a first bracket, a second bracket and a second elastic piece; the second lifting seat can rise or descend in a controlled manner relative to the supporting mechanism, the first bracket is connected to the supporting mechanism in a lifting manner and is connected with the second lifting seat, and the first pressing part is arranged on the first bracket;

the second bracket is movably connected to the supporting mechanism along the second preset direction, and the first clamping part is arranged on the second bracket; the second elastic piece is connected between the second bracket and the supporting mechanism, so that the second bracket has a movement trend of driving the first clamping part to move close to the second clamping part;

one of the second bracket and the second lifting seat is provided with a first follow-up part, and the other one of the second bracket and the second lifting seat is provided with a first wedge-shaped part; the first follow-up part is in butt fit with the first wedge-shaped part, so that the ascending motion of the second lifting seat is converted into the motion that the second bracket drives the first clamping part to be far away from the second clamping part.

In one embodiment, the second positioning mechanism further has a second pressing portion configured to perform a lowering motion to press the battery cell against the first support surface when the second clamping portion moves close to the first clamping portion; when the second clamping part moves away from the first clamping part, the second pressing part moves upwards so as to be separated from the battery cell.

In one embodiment, the second positioning mechanism includes a third lifting seat, a third bracket, a fourth bracket and a third elastic member; the third lifting seat can rise or descend in a controlled manner relative to the supporting mechanism, the third bracket is connected to the supporting mechanism in a lifting manner and is connected with the third lifting seat, and the second pressing part is arranged on the third bracket;

the fourth bracket is movably connected to the supporting mechanism along the second preset direction, and the second clamping part is arranged on the fourth bracket; the third elastic piece is connected between the fourth bracket and the supporting mechanism, so that the fourth bracket has a movement trend of driving the second clamping part to move close to the first clamping part;

one of the fourth bracket and the third lifting seat is provided with a second follow-up part, and the other one of the fourth bracket and the third lifting seat is provided with a second wedge-shaped part; the second follow-up part is in butt fit with the second wedge-shaped part, so that the ascending motion of the third lifting seat is converted into the motion that the fourth bracket drives the second clamping part to be far away from the first clamping part.

A coating apparatus comprising a rubberizing device and a coating device as described in any one of the embodiments above; when the two ends of the protective film are respectively rolled to the top surface of the battery cell by the first roller and the second roller, the rubberizing device is used for sticking adhesive tapes so as to paste and fix the two ends of the protective film to the top surface of the battery cell.

According to the coating device and the coating equipment, in the actual use process, the protective film is paved on the first supporting surface, the first roller and the second roller. Then, the cell to be coated is placed on the first support surface. Then, the first roller and the second roller are controlled to rise, so that the first roller and the second roller roll along the side surfaces of the battery cell in the first preset direction respectively until reaching the top of the battery cell, and then the first roller and the second roller roll the protective film onto the two side surfaces of the battery cell in the first preset direction and the top surface of the battery cell, that is, the protective film is coated on the bottom surface, the top surface and the two side surfaces of the battery cell in the first preset direction.

Therefore, the first roller and the second roller are utilized to wrap the protective film on the surface of the battery cell in a rolling manner along the surface of the battery cell, the battery cell is not required to be driven to turn over, the structure is simple, the occupied space is greatly reduced, and the problem of insufficient coating space is avoided.

Drawings

FIG. 1 is a schematic view of a film coating apparatus according to an embodiment of the present invention;

FIG. 2 is a top view of the encapsulation tool of FIG. 1;

FIG. 3 is a bottom view of the encapsulation tool of FIG. 1 (with the first lift base omitted);

FIG. 4 is a bottom view of the encapsulation tool of FIG. 1;

FIG. 5 is a schematic view of an assembly structure of a first roller of the coating device shown in FIG. 1;

FIG. 6 is a side view of the mounting structure of the first roller shown in FIG. 5;

fig. 7 to 8 are action explanatory views of a loading station of the coating device;

FIGS. 9, 11 and 13 are schematic views showing the operation of the coating device at the coating station;

FIG. 10 is a side view of the encapsulation tool of FIG. 9;

FIG. 12 is a side view of the encapsulation tool of FIG. 11;

fig. 14 is a side view of the encapsulation tool of fig. 13.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 and 2, an embodiment of the present invention provides a coating apparatus, which includes a support mechanism 10 and a coating mechanism 20. The supporting mechanism 10 has a first supporting surface 11 for supporting the cell A2 (see fig. 7), and a protective film A1 (see fig. 7) is provided between the first supporting surface 11 and the cell A2. The film coating mechanism 20 has a first roller 21a and a second roller 21b, the first roller 21a and the second roller 21b being respectively located on both sides of the first support surface 11 in the first preset direction X1 and for supporting the protective film A1 together with the first support surface 11. That is, the protective film A1 is laid on the first supporting surface 11, the first roller 21a and the second roller 21b, and then the battery cell A2 is placed on the first supporting surface 11.

The first roller 21a and the second roller 21b are respectively used for abutting against two side surfaces of the battery cell A2 in the first preset direction X1, and can roll from the bottom of the battery cell A2 to the top of the battery cell A2 in a controlled manner, so that the first roller 21a and the second roller 21b roll the protective film A1 onto two side surfaces of the battery cell A2 in the first preset direction X1 and the top surface of the battery cell A2.

In the above-mentioned coating device, first, the protective film A1 is laid on the first supporting surface 11, the first roller 21a and the second roller 21b in the actual use process. Then, the cell A2 to be coated is placed on the first support surface 11. Then, the first roller 21a and the second roller 21b are controlled to rise, so that the first roller 21a and the second roller 21b roll along the sides of the battery cell A2 in the first preset direction X1 until reaching the top of the battery cell A2, and the first roller 21a and the second roller 21b roll the protective film A1 onto the two side surfaces of the battery cell A2 in the first preset direction X1 and the top surface of the battery cell A2, that is, the protective film A1 covers the bottom surface, the top surface and the two side surfaces of the battery cell A2 in the first preset direction X1.

Therefore, the protection film A1 is coated on the surface of the battery cell A2 by utilizing the rolling mode of the first roller 21a and the second roller 21b along the surface of the battery cell A2, the battery cell A2 is not required to be driven to overturn, the structure is simple, the occupied space is greatly reduced, and the problem of insufficient coating space is avoided.

In particular to the embodiment, the support mechanism 10 further comprises a second support surface 12 and a third support surface 13. The second support surface 12 is located on a side of the first roller 21a facing away from the first support surface 11, and the third support surface 13 is located on a side of the second roller 21b facing away from the first support surface 11. The first support surface 11, the second support surface 12, the third support surface 13, the first roller 21a, and the second roller 21b are for supporting the protective film A1 in common, and the second support surface 12 and the third support surface 13 are capable of adsorbing the protective film A1. In this way, before the first roller 21a and the second roller 21b are coated, the protective film A1 is first laid on the first supporting surface 11, the second supporting surface 12, the third supporting surface 13, the first roller 21a and the second roller 21b, and then the battery cell A2 to be coated is placed on the first supporting surface 11. Then, the first roller 21a and the second roller 21b are controlled to rise such that the first roller 21a and the second roller 21b roll the protective film A1 on both side surfaces of the battery cell A2 in the first preset direction X1. When the first roller 21a and the second roller 21b roll to the top of the cell A2, the protective film A1 covers the bottom surface, the top surface, and both side surfaces of the cell A2 in the first preset direction X1. In addition, in the process that the first roller 21a and the second roller 21b roll along the surface of the battery cell A2, the second supporting surface 12 and the third supporting surface 13 can adsorb the protective film A1, so that the protective film A1 is in a straightening state, wrinkles or position offset of the protective film A1 are avoided, and the coating precision and the coating quality are improved. Alternatively, the second support surface 12 and the third support surface 13 may absorb the protective film A1 by vacuum absorption.

Further, the first supporting surface 11 can also adsorb the protective film A1, so that it is beneficial to ensure that the protective film A1 remains flat, and avoid generating wrinkles or positional deviations. Alternatively, the first supporting surface 11 may absorb the protective film A1 by vacuum absorption.

In particular, in the embodiment, the first roller 21a and the second roller 21b may also be controllably moved toward or away from each other. As such, when the first roller 21a and the second roller 21b roll to the top of the cell A2 along both side surfaces of the cell A2 in the direction of the first preset direction X1, respectively, the first roller 21a and the second roller 21b move close to each other to roll the protective film A1 onto the top surface of the cell A2. Then, the first roller 21a and the second roller 21b are moved away from each other until the interval between the first roller 21a and the second roller 21b is greater than or equal to the width dimension of the battery cell A2 in the first preset direction X1. Then, the first roller 21a and the second roller 21b descend until returning to the initial positions.

In particular to the embodiment, the support mechanism 10 includes a mounting plate 14, a master suction plate 11a, a first slave suction plate 12a, and a second slave suction plate 13a. The main suction plate 11a is fixedly connected to the top surface of the mounting plate 14, and the top surface of the main suction plate 11a is the first supporting surface 11. The first and second

slave suction plates

12a and 13a are fixedly connected to the top surface of the mounting plate 14 and are located at both sides of the master suction plate 11a in the first preset direction X1. The top surface of the first slave suction plate 12a is the second supporting surface 12, and the top surface of the second slave suction plate 13a is the third supporting surface 13. The first roller 21a is located between the master suction plate 11a and the first slave suction plate 12a, and the second roller 21b is located between the master suction plate 11a and the second slave suction plate 13a.

Further, the number of the first slave suction plates 12a is two, and the two first slave suction plates 12a are arranged at intervals along the second preset direction X2 intersecting the first preset direction X1. Since the two first sub-suction plates 12a are provided, the protective film A1 is commonly adsorbed by the second support surfaces 12 on the two first sub-suction plates 12 a. Optionally, the second preset direction X2 is perpendicular to the first preset direction X1.

The number of the second sub-suction plates 13a is two, and the two second sub-suction plates 13a are arranged at intervals along the second preset direction X2. Since the two second sub-suction plates 13a are provided, the protective film A1 is commonly adsorbed by the third support surfaces 13 on the two second sub-suction plates 13 a.

In order to better support the protective film A1, avoid wrinkling of the protective film A1, and ensure accommodation of the first roller 21a, the distance between the master suction plate 11a and the first slave suction plate 12a should be slightly larger than the diameter of the first roller 21 a. Similarly, in order to better support the protective film A1, to avoid wrinkling of the protective film A1, and to ensure accommodation of the second roller 21b, the distance between the master suction plate 11a and the second slave suction plate 13a should be slightly larger than the diameter of the second roller 21 b.

It should be noted that, when the width dimension of the main suction plate 11a in the first preset direction X1 differs greatly from the width dimension of the battery cell A2 in the first preset direction X1, on the one hand, the up-and-down rolling of the first roller 21a and the second roller 21b is affected; on the other hand, the protective film A1 at the junction between the bottom surface and the side surface of the cell A2 is wrinkled. In order to ensure smooth up-and-down rolling of the first roller 21a and the second roller 21b and to ensure coating quality at the junction of the bottom surface and the side surface of the battery cell A2, the width dimension of the main suction plate 11a in the first preset direction X1 and the width dimension of the battery cell A2 in the first preset direction X1 should be equal or the difference between them is within an allowable error range, which may be set according to the specific situation, and is not limited herein.

In an embodiment of the present invention, the coating mechanism 20 further includes a moving assembly (not shown) including a first lifting seat 24, a first moving seat 22a, a second moving seat 22b, a first elastic member 28, and a spreader driving member (not shown). The first lifting base 24 is connected to the mounting plate 14 of the support mechanism 10 in a lifting manner. The first moving seat 22a and the second moving seat 22b are both movably connected to the first elevating seat 24 along the first preset direction X1, so that the first moving seat 22a and the second moving seat 22b can both ascend or descend along the first elevating seat 24 and can also approach or depart from each other along the first preset direction X1. The first roller 21a is mounted on the first motion seat 22a, and the second roller 21b is mounted on the second motion seat 22 b. The first elastic member 28 is connected between the first moving seat 22a and the second moving seat 22b, so that under the elastic force provided by the first elastic member 28, the first roller 21a and the second roller 21b have a moving trend of approaching each other, so that the first roller 21a and the second roller 21b respectively abut against two side surfaces of the battery cell A2 in the first preset direction X1 in the process of following the rising of the first lifting seat 24, and further the first roller 21a and the second roller 21b roll the protective film A1 on the surface of the battery cell A2. The opening driving member is connected between the first moving seat 22a and the second moving seat 22b, and is used for providing driving force for driving the first roller 21a and the second roller 21b to be away from each other. Alternatively, the distraction drive can be a cylinder.

In this way, in the process of coating, first, the first lifting seat 24 drives the first roller 21a and the second roller 21b to lift, so that the first roller 21a and the second roller 21b roll the protection film A1 to the two side surfaces of the battery cell A2 in the first preset direction X1. When the first roller 21a and the second roller 21b continue to rise to the top of the battery cell A2 along with the first lifting seat 24, the first roller 21a and the second roller 21b roll along the top surface of the battery cell A2 to approach each other under the elastic force of the first elastic member 28, so as to roll the protective film A1 on the top surface of the battery cell A2. Then, under the driving action of the opening driving member, the first roller 21a and the second roller 21b are separated from each other against the elastic force of the first elastic member 28 until the distance between the first roller 21a and the second roller 21b is greater than or equal to the width of the battery cell A2 in the first preset direction X1, so that the first lifting seat 24 can smoothly drive the first roller 21a and the second roller 21b to descend until the first roller 21a returns to the position between the master suction plate 11a and the first slave suction plate 12a, and the second roller 21b returns to the position between the master suction plate 11a and the second slave suction plate 13 a.

Further, the mounting plate 14 is provided with a first opening 141 and a second opening 142, and the first opening 141 and the second opening 142 are respectively located at two sides of the main suction plate 11a in the first preset direction X1. The first elevating seat 24 is liftably connected to the bottom of the mounting plate 14. One end of the first moving seat 22a is movably connected to the first lifting seat 24 along the first preset direction X1, and the other end of the first moving seat 22a penetrates through the first opening 141 and is provided with a first roller 21a. One end of the second moving seat 22b is movably connected to the first lifting seat 24 along the first preset direction X1, and the other end of the second moving seat 22b penetrates through the second opening 142 and is provided with a second roller 21b. Alternatively, the first opening 141 is located between the two first slave suction plates 12a, advantageously such that the first roller 21a is arranged between the master suction plate 11a and the first slave suction plate 12 a. The second opening 142 is located between the two second slave suction plates 13a, advantageously such that the second roller 21b is arranged between the master suction plate 11a and the second slave suction plates 13 a.

Optionally, the motion assembly further includes a guide post 25 and a return elastic member 26, where the guide post 25 is fixedly connected to the bottom of the mounting plate 14, and an axis of the guide post 25 is parallel to the vertical direction. The first lifting seat 24 is provided with a guide hole (not shown) through which the guide post 25 penetrates, so that the first lifting seat 24 can freely move along the axial direction of the guide post 25 under the action of driving force, that is, the lifting and descending movement of the first lifting seat 24 is guided by the guide post 25. The reset elastic member 26 abuts between the first lifting seat 24 and the mounting plate 14, so that when the driving force for driving the first lifting seat 24 to lift disappears, the first lifting seat 24 can be lowered to the initial position (i.e. reset) under the elastic force of the reset elastic member 26. Alternatively, the return elastic member 26 may be a return spring, which is sleeved on the guide post 25, and two ends of which respectively abut against the first lifting seat 24 and the mounting plate 14.

Referring to fig. 3 and 4, optionally, a first sliding rail 241 extending lengthwise along the first preset direction X1 is disposed on the first lifting seat 24. The first moving seat 22a is provided with a first slider 223a, and the second moving seat 22b is provided with a second slider 223b. The first slider 223a and the second slider 223b are both slidably connected to the first slide rail 241, so that the movement of the first slider 223a and the second slider 223b along the first slide rail 241 is used to guide the first movement seat 22a and the second movement seat 22b to approach or separate from each other along the first preset direction X1, respectively.

Referring to fig. 5 and 6, in the embodiment, the movement assembly further includes a first mounting block 23a, and the first roller 21a is mounted on the first movement seat 22a through the first mounting block 23 a. The top surface of the first mounting block 23a and/or the top surface of the first moving seat 22a together form a fourth supporting surface 231a for supporting the protective film A1, so that the protective film A1 located between the two first slave suction plates 12a is supported by the fourth supporting surface 231a, avoiding wrinkling of the protective film A1 between the two first slave suction plates 12 a. Further, the fourth supporting surface 231a is provided with a glue coating layer, and the glue coating layer is used for contacting the protective film A1, so that the first mounting block 23a and the first moving seat 22a made of metal materials are prevented from directly contacting the protective film A1.

Further, the first mounting block 23a has a first calking surface 233a as its bottom surface. When the first roller 21a rolls to the top of the battery cell A2 along the side surface of the battery cell A2, the first smoothing surface 233a is attached to the top surface of the battery cell A2, so as to smooth the protective film A1 on the top surface of the battery cell A2, and avoid the protective film A1 coated on the top surface of the battery cell A2 from generating wrinkles. Further, the first smoothing surface 233a is provided with a glue coating layer, and the glue coating layer is used for contacting the protective film A1, so that the first mounting block 23a made of metal is prevented from directly contacting the protective film A1.

Referring to fig. 12, in particular, in the embodiment, the movement assembly further includes a second mounting block 23b, and the second roller 21b is mounted on the second movement seat 22b through the second mounting block 23 b. The top surface of the second mounting block 23b and/or the top surface of the second moving seat 22b together form a fifth supporting surface 231b for supporting the protective film A1, so that the protective film A1 between the two second sub-suction plates 13a is supported by the fifth supporting surface 231b, avoiding wrinkling of the protective film A1 between the two second sub-suction plates 13 a. Further, the fifth supporting surface 231b is provided with a glue coating layer, and the glue coating layer is used to contact the protective film A1, so that the second mounting block 23b and the second moving seat 22b made of metal materials are prevented from directly contacting the protective film A1.

Further, the second mounting block 23b has a second calking surface 233b as its bottom surface. When the second roller 21b rolls to the top of the battery cell A2 along the side surface of the battery cell A2, the second smoothing surface 233b is attached to the top surface of the battery cell A2, so as to smooth the protective film A1 on the top surface of the battery cell A2, and avoid the protective film A1 coated on the top surface of the battery cell A2 from generating wrinkles. Further, the second smoothing surface 233b is provided with a glue coating layer, and the glue coating layer is used for contacting the protective film A1, so that the second mounting block 23b made of metal material is prevented from directly contacting the protective film A1.

In particular, in the embodiment, the coating device further includes a pressing strip 60, where the pressing strip 60 may be disposed in the middle of the top surface of the battery cell A2, so as to press the battery cell A2 onto the first supporting surface 11, so as to avoid shaking or position offset of the battery cell A2 during coating. Thus, when the first roller 21a and the second roller 21b roll to the top surface of the battery cell A2, the pressing bar 60 is located between the first roller 21a and the second roller 21b.

Referring to fig. 3 and 4, further, a first stopper 221a and a second stopper 221b are respectively disposed on the first moving seat 22a and the second moving seat 22 b. The first lifting seat 24 is provided with a first limiting groove for the first limiting block 221a to penetrate through and a second limiting groove for the second limiting block 221b to penetrate through. When the first moving seat 22a and the second moving seat 22b move close to each other, the first limiting block 221a and the second limiting block 221b are driven to move a certain distance along the first limiting groove and the second limiting groove respectively until being limited, so as to limit the limit position of the first moving seat 22a and the second moving seat 22b moving close to each other, and when the first moving seat 22a and the second moving seat 22b drive the first roller 21a and the second roller 21b to move close to each other to the limit position respectively, the first roller 21a and the second roller 21b do not collide with the pressing bar 60 therebetween.

Referring to fig. 1, in particular to the embodiment, the coating mechanism 20 further includes a first lift driving mechanism 27 mounted on the mounting plate 14, and the first lift driving mechanism 27 is drivingly connected to the first lift base 24 to drive the first lift base 24 to raise or lower. The first lifting drive mechanism 27 may be a drive mechanism such as an air cylinder, an electric cylinder, or a motor screw pair, and is not limited herein as long as it can drive the first lifting seat 24 to rise or fall relative to the mounting plate 14.

Referring to fig. 1 and 2, in the embodiment of the present invention, the coating apparatus further includes a first positioning mechanism 30 and a second positioning mechanism 40 that are both disposed on the mounting plate 14 of the supporting mechanism 10. The first positioning mechanism 30 and the second positioning mechanism 40 are respectively located at two sides of the first supporting surface 11 in the second preset direction X2, and are used for fixing the battery cell A2 on the first supporting surface 11, so that the battery cell A2 on the first supporting surface 11 is prevented from being displaced or falling off during the transferring process of the coating device.

The first positioning mechanism 30 has a first clamping portion 31, and the second positioning mechanism 40 has a second clamping portion 41. The first clamping part 31 and the second clamping part 41 can be controllably moved toward and away from each other to clamp or unclamp the cell A2 in the second preset direction X2. Thus, when the coating device needs to be transferred, the first clamping portion 31 and the second clamping portion 41 are controlled to be close to each other until the battery cell A2 on the first supporting surface 11 is clamped. When the coating device is transferred in place, the first clamping part 31 and the second clamping part 41 are controlled to be away from each other, so that the battery cell A2 on the first supporting surface 11 is loosened, and the battery cell A2 is coated conveniently.

In particular, in the embodiment, the first positioning mechanism 30 further has a first pressing portion 32, and the first positioning mechanism 30 is configured such that, when the first clamping portion 31 moves close to the second clamping portion 41, the first pressing portion 32 makes a descending motion to press the battery cell A2 against the first supporting surface 11; when the first clamping portion 31 moves away from the second clamping portion 41, the first pressing portion 32 moves upward to be separated from the cell A2. When the coating device needs to be transferred, the first clamping part 31 and the second clamping part 41 are controlled to be close to each other until the battery cell A2 on the first supporting surface 11 is clamped. At the same time, the first pressing part 32 moves downward until the cell A2 is pressed against the first support surface 11. When the coating device is transferred into place, the first clamping part 31 and the second clamping part 41 are controlled to be away from each other, so that the battery cell A2 on the first supporting surface 11 is loosened. At the same time, the first pressing part 32 moves upward, thereby being separated from the cell A2.

Further, the first positioning mechanism 30 includes a second lifting seat 36, a first bracket 37, a second bracket 33, and a second elastic member 35. The second lifting seat 36 can be lifted up or lowered down controllably relative to the support mechanism 10. The first bracket 37 is connected to the mounting plate 14 of the support mechanism 10 in a lifting manner, and is fixedly connected to the second lifting seat 36. The first pressing part 32 is mounted on the first bracket 37 such that the first bracket 37 and the first pressing part 32 on the first bracket 37 can be lifted and lowered together with the second lifting seat 36 to press or release the cell A2 on the first supporting surface 11.

The second bracket 33 is movably connected to the mounting plate 14 of the support mechanism 10 in a second preset direction X2. The first clamping portion 31 is mounted on the second bracket 33 to move along with the second bracket 33 in the second preset direction X2. The second elastic member 35 is connected between the second bracket 33 and the mounting plate 14 of the support mechanism 10, so that the second bracket 33 has a movement tendency to drive the first clamping portion 31 to move close to the second clamping portion 41 under the elastic force provided by the second elastic member 35. One of the second bracket 33 and the second elevating seat 36 has a first follower 34, and the other has a first wedge 361. The first follower 34 is in abutting fit with the first wedge 361, so as to convert the ascending motion of the second lifting seat 36 into the motion of the second bracket 33 to drive the first clamping portion 31 to move away from the second clamping portion 41.

Thus, when the battery cell A2 on the first supporting surface 11 needs to be fixed, the second lifting seat 36 is controlled to descend, so that the first pressing portion 32 is driven by the first bracket 37 to press the battery cell A2 on the first supporting surface 11. At the same time, the second bracket 33 drives the first clamping portion 31 to move close to the second clamping portion 41 under the elastic force of the second elastic member 35 until the cell A2 on the first supporting surface 11 is clamped. When the battery cell A2 on the first supporting surface 11 needs to be loosened, the second lifting seat 36 is controlled to lift, so that the first pressing part 32 is driven by the first bracket 37 to be separated from the battery cell A2 on the first supporting surface 11, and the battery cell A2 is loosened. Meanwhile, since the first follower 34 is in abutting engagement with the first wedge 361, the first follower 34 moves along the first wedge 361 when the second lifting seat 36 is lifted, so as to drive the second bracket 33 to move towards a direction away from the second clamping portion 41 against the elastic force of the second elastic member 35, i.e. the second bracket 33 drives the first clamping portion 31 to move away from the second clamping portion 41, thereby releasing the cell A2 on the first supporting surface 11.

Further, the first follower 34 is a roller, and the first wedge 361 has a first guiding slope 362 inclined with respect to the second preset direction X2. The first follower 34 is abutted against the first guiding inclined plane 362, and when the second lifting seat 36 ascends, the first follower 34 rolls along the first guiding inclined plane 362 in a downward slope direction, so that the second bracket 33 overcomes the elasticity of the second elastic member 35 and moves away from the second clamping part 41, and the first clamping part 31 is driven to move away from the second clamping part 41; when the second lifting seat 36 descends, the first follower 34 rolls along the first guiding slope 362 in an upward slope direction, so that the second bracket 33 moves close to the second clamping portion 41 under the elastic force of the second elastic member 35, and the first clamping portion 31 is driven to move close to the second clamping portion 41.

In particular to the embodiment, the first positioning mechanism 30 further includes a second elevating driving mechanism 363 mounted on the mounting plate 14, and the second elevating driving mechanism 363 is drivingly connected to the second elevating seat 36 to drive the second elevating seat 36 to ascend or descend. The second elevating drive mechanism 363 may be a drive mechanism such as an air cylinder, an electric cylinder, or a motor screw pair, and is not limited herein as long as it can drive the second elevating seat 36 to ascend or descend with respect to the mounting plate 14.

In the embodiment, the first positioning mechanism 30 further includes a first rotation driving member 38 and a first swing arm 39. The first rotary drive 38 is mounted on the first bracket 37. One end of the first swing arm 39 is connected to the driving end of the first rotation driving member 38, and the first pressing portion 32 is mounted to the other end of the first swing arm 39. The first rotation driving member 38 can drive the first swing arm 39 to swing, so that the first swing arm 39 drives the first pressing portion 32 to reach or withdraw from above the battery cell A2. In this way, when the first pressing portion 32 is required to press the battery cell A2 on the first supporting surface 11, first, the first rotation driving member 38 drives the first swing arm 39 to swing until the first swing arm 39 drives the first pressing portion 32 to swing to reach above the battery cell A2 on the first supporting surface 11. Then, the second lifting seat 36 drives the first pressing portion 32 to descend until the first pressing portion 32 presses the top of the battery cell A2, that is, presses the battery cell A2 on the first supporting surface 11. When the first pressing portion 32 is not needed to press the cell A2 on the first supporting surface 11, first, the second lifting seat 36 drives the first pressing portion 32 to lift, so that the first pressing portion 32 is separated from the cell A2. Then, the first rotation driving member 38 drives the first swing arm 39 to swing until the first swing arm 39 drives the first pressing portion 32 to swing away from the upper portion of the battery cell A2, so that the first pressing portion 32 does not interfere with the discharging operation of the battery cell A2. Alternatively, the first rotary drive 38 may employ a rotary cylinder.

In other embodiments, the first rotation driving member 38 may be a rotation lifting cylinder, and the first pressing portion 32 may be driven to perform the swinging motion and the lifting motion simultaneously by using the rotation lifting cylinder.

In particular, in the embodiment, the second positioning mechanism 40 further has a second pressing portion 42, and the second positioning mechanism 40 is configured such that, when the second clamping portion 41 moves close to the first clamping portion 31, the second pressing portion 42 performs a lowering motion to press the cell A2 against the first supporting surface 11; when the second clamping portion 41 moves away from the first clamping portion 31, the second pressing portion 42 moves upward to be separated from the cell A2.

Thus, when the coating device needs to be transferred, the first clamping portion 31 and the second clamping portion 41 are controlled to be close to each other until the battery cell A2 on the first supporting surface 11 is clamped. At the same time, the first pressing part 32 and the second pressing part 42 move downward until the cell A2 is pressed against the first support surface 11. When the coating device is transferred into place, the first clamping part 31 and the second clamping part 41 are controlled to be away from each other, so that the battery cell A2 on the first supporting surface 11 is loosened. At the same time, the first pressing part 32 and the second pressing part 42 perform a rising motion, thereby being separated from the cell A2.

Further, the second positioning mechanism 40 includes a third lifting seat 46, a third bracket 47, a fourth bracket 43 and a third elastic member 45. The third lifting seat 46 is controllably raised or lowered relative to the mounting plate 14 of the support mechanism 10. The third support 47 is connected to the mounting plate 14 of the support mechanism 10 in a lifting manner, and is fixedly connected to the third lifting seat 46. The second pressing part 42 is mounted on the third support 47 such that the third support 47 and the second pressing part 42 on the third support 47 can be lifted and lowered together with the third lifting seat 46 to press or release the cell A2 on the first support surface 11.

The fourth bracket 43 is movably connected to the mounting plate 14 of the support mechanism 10 in the second preset direction X2. The second clamping portion 41 is mounted on the fourth bracket 43 to move along with the fourth bracket 43 in the second preset direction X2. The third elastic member 45 is connected between the fourth bracket 43 and the mounting plate 14 of the supporting mechanism 10, so that the fourth bracket 43 has a movement tendency to drive the second clamping portion 41 to move close to the first clamping portion 31 under the elastic force provided by the third elastic member 45. One of the fourth bracket 43 and the third elevating seat 46 has a second follower portion 44, and the other has a second wedge portion 461. The second follower 44 is in abutting fit with the second wedge 461 to convert the ascending movement of the third lifting seat 46 into the movement of the fourth bracket 43 to drive the second clamping portion 41 away from the first clamping portion 31.

Thus, when the battery cell A2 on the first supporting surface 11 needs to be fixed, the third lifting seat 46 is controlled to descend, so that the third bracket 47 drives the second pressing portion 42 to press the battery cell A2 on the first supporting surface 11. At the same time, the fourth bracket 43 drives the second clamping portion 41 to move close to the first clamping portion 31 under the elastic force of the third elastic member 45 until the cell A2 on the first supporting surface 11 is clamped. When the battery cell A2 on the first supporting surface 11 needs to be loosened, the third lifting seat 46 is controlled to lift, so that the second pressing part 42 is driven by the third bracket 47 to be separated from the battery cell A2 on the first supporting surface 11, and the battery cell A2 is loosened. Meanwhile, since the second follower 44 is in abutting engagement with the second wedge-shaped portion 461, when the third lifting seat 46 is lifted, the second follower 44 moves along the second wedge-shaped portion, so as to drive the fourth bracket 43 to move towards a direction away from the first clamping portion 31 against the elastic force of the third elastic member 45, that is, the fourth bracket 43 drives the second clamping portion 41 to move away from the first clamping portion 31, thereby releasing the cell A2 on the first supporting surface 11.

Further, the second follower 44 is a roller, and the second wedge 461 has a second guiding slope 462 inclined with respect to the second predetermined direction X2. The second follower 44 is abutted against the second guiding inclined surface 462, and when the third lifting seat 46 ascends, the second follower 44 rolls along the second guiding inclined surface 462 in a downward slope direction, so that the fourth bracket 43 overcomes the elastic force of the third elastic member 45 and moves away from the first clamping portion 31, and the second clamping portion 41 is driven to move away from the first clamping portion 31; when the third lifting seat 46 descends, the second follower 44 rolls along the second guiding slope 462 in the upward slope direction, so that the fourth bracket 43 moves close to the first clamping portion 31 under the elastic force of the third elastic member 45, and the second clamping portion 41 is driven to move close to the first clamping portion 31.

In particular to the embodiment, the second positioning mechanism 40 further includes a third elevating driving mechanism 463 mounted on the mounting plate 14, and the third elevating driving mechanism 463 is drivingly connected with the third elevating seat 46 to drive the third elevating seat 46 to ascend or descend. The third elevating driving mechanism 463 may be a driving mechanism such as an air cylinder, an electric cylinder, or a motor screw pair, and is not limited herein as long as it can drive the third elevating seat 46 to ascend or descend with respect to the mounting plate 14.

In the embodiment, the second positioning mechanism 40 further includes a second rotation driving member 48 and a second swing arm 49. The second rotary drive 48 is mounted on a third bracket 47. One end of the second swing arm 49 is connected to the driving end of the second rotation driving member 48, and the second pressing portion 42 is mounted to the other end of the second swing arm 49. The second rotation driving member 48 can drive the second swing arm 49 to swing, so that the second swing arm 49 drives the second pressing portion 42 to reach or withdraw from above the battery cell A2.

When the second pressing portion 42 is needed to press the battery cell A2 on the first supporting surface 11, the second rotation driving member 48 drives the second swing arm 49 to swing first until the second swing arm 49 drives the second pressing portion 42 to swing to reach above the battery cell A2 on the first supporting surface 11. Then, the third lifting seat 46 drives the second pressing portion 42 to descend until the second pressing portion 42 presses the top of the battery cell A2, that is, presses the battery cell A2 on the first supporting surface 11. When the second pressing portion 42 is not needed to press the cell A2 on the first supporting surface 11, first, the third lifting seat 46 drives the second pressing portion 42 to lift, so that the second pressing portion 42 is separated from the cell A2. Then, the second rotation driving member 48 drives the second swing arm 49 to swing until the second swing arm 49 drives the second pressing portion 42 to swing away from the upper portion of the battery cell A2, so that the second pressing portion 42 does not interfere with the discharging operation of the battery cell A2. Alternatively, the second rotary drive 48 may employ a rotary cylinder.

In other embodiments, the second rotation driving member 48 may use a rotation lifting cylinder, and the rotation lifting cylinder may be used to drive the second pressing portion 42 to perform the swinging motion and the lifting motion simultaneously.

Based on the coating device, the invention further provides coating equipment. The coating apparatus comprises a rubberizing device and a coating device as described in any one of the embodiments above. When the protective film A1 is rolled to the top surface of the battery cell A2 by the first roller 21a and the second roller 21b, the adhesive tape A3 is adhered between two ends of the protective film A1 by the adhesive tape adhering device, so that the protective film A1 is prevented from falling off from the battery cell A2.

Specifically, the coating equipment is provided with a feeding station, a coating station, a rubberizing station and a discharging station. The coating device is transferred among the feeding station, the coating station, the rubberizing station and the blanking station. The coating equipment further comprises a feeding device arranged at the feeding station and a discharging device arranged at the discharging station, and the rubberizing device is arranged at the rubberizing station.

When the coating device is transferred to the feeding station, the feeding device feeds the protection film A1 and the battery cell A2 onto the coating device, namely, the protection film A1 is paved on the first supporting surface 11, the second supporting surface 12, the third supporting surface 13, the fourth supporting surface 231a, the fifth supporting surface 231b, the first roller 21a and the second roller 21b, so that the protection film A1 is adsorbed and fixed by the first supporting surface 11, the second supporting surface 12 and the third supporting surface 13. And, the electric core A2 is fed onto the first supporting surface 11.

When the film coating device is transferred to the film coating station, the first roller 21a and the second roller 21b roll upwards along the two side surfaces of the battery cell A2 in the first preset direction X1 under the drive of the first lifting seat 24 until the rolling reaches the top of the battery cell A2, so that the first roller 21a and the second roller 21b roll the protective film A1 onto the two side surfaces and the top surface of the battery cell A2 in the first preset direction X1.

When the coating device is transferred to the rubberizing station, the rubberizing device pastes the adhesive tape A3 between two ends of the protective film A1 on the top surface of the battery cell A2. Then, the first roller 21a and the second roller 21b are driven to move away from each other by the opening driving member, and then the first roller 21a and the second roller 21b are lowered to the initial positions by the driving of the first elevating seat 24.

When the coating device is transferred to the blanking station, the blanking device performs blanking on the battery cell A2 on the first supporting surface 11, and the protective film A1 is wrapped on the battery cell A2.

The following block diagrams 7 to 14 illustrate the coating operation:

transferring the coating device to a feeding station: first, the protective film A1 is laid on the first supporting surface 11, the second supporting surface 12, the third supporting surface 13, the fourth supporting surface 231a, the fifth supporting surface 231b, the first roller 21a and the second roller 21b by the feeding device, so that the first supporting surface 11, the second supporting surface 12 and the third supporting surface 13 adsorb and fix the protective film A1. Then, the feeding device feeds the battery cell A2 to be coated onto the first supporting surface 11. Then, the first rotation driving member 38 and the second rotation driving member 48 drive the first swing arm 39 and the second swing arm 49 to swing, respectively, until the first pressing portion 32 and the second pressing portion 42 swing to above the battery cell A2. Then, the second elevating seat 36 and the third elevating seat 46 descend until the first pressing part 32 and the second pressing part 42 press-tightly press the top of the cell A2, and at the same time, the first clamping part 31 and the second clamping part 41 approach each other to clamp the cell A2. When the first rotary driving member 38 and the second rotary driving member 48 use the rotary lifting cylinder, the swinging and pressing actions of the first pressing portion 32 and the second pressing portion 42 may be performed simultaneously.

Transferring the coating device to a coating station: first, the second elevating seat 36 and the third elevating seat 46 are elevated such that the first pressing part 32 and the second pressing part 42 are separated from the cell A2, while the first clamping part 31 and the second clamping part 41 are separated from each other to release the cell A2. And, the first rotation driving piece 38 and the second rotation driving piece 48 drive the first swing arm 39 and the second swing arm 49 to swing respectively until the first pressing portion 32 and the second pressing portion 42 are driven to leave the upper side of the battery cell A2 respectively. Then, the pressing bar 60 is arranged on the upper surface of the battery cell A2, and the battery cell A2 is pressed on the first supporting surface 11 by the pressing bar 60. Then, under the driving of the first lifting seat 24, the first roller 21a and the second roller 21b roll upwards along the two side surfaces of the battery cell A2 in the first preset direction X1 respectively until reaching the top of the battery cell A2 (before the two end parts of the protective film A1 are separated from the second supporting surface 12 and the third supporting surface 13 under the driving of the first roller 21a and the second roller 21b, respectively), the second supporting surface 12 and the third supporting surface 13 keep the adsorption to the protective film A1, so that the protective film A1 keeps a flat and tensioned state, and wrinkles or position deviations are avoided, so that the first roller 21a and the second roller 21b roll the protective film A1 onto the two side surfaces of the battery cell A2 in the first preset direction X1. When the first roller 21a and the second roller 21b reach the top of the battery cell A2, under the combined action of the first elastic member 28 and the opening driving member, the first roller 21a and the second roller 21b roll along the top surface of the battery cell A2 at a preset speed to roll the two ends of the protection film A1 on the top surface of the battery cell A2 respectively. Meanwhile, the first smoothing surface 233a of the first mounting block 23a and the second smoothing surface 233b of the second mounting block 23b are attached to the top surface of the cell A2, so as to smooth the protective film A1 on the top surface of the cell A2, and avoid wrinkles generated in the protective film A1.

The coating device is transferred to a rubberizing station: first, the bead 60 on the top surface of the cell A2 is removed. Then, the rubberizing device pastes the adhesive tape A3 on the top surface of the battery cell A2 and the two end parts of the protective film A1 so as to paste and fix the two end parts of the protective film A1 on the top surface of the battery cell A2. Then, the opening driving member drives the first moving seat 22a and the second moving seat 22b to move away from each other, so as to drive the first roller 21a and the second roller 21b to move away from each other until the distance between the first roller 21a and the second roller 21b is equal to or slightly greater than the width dimension of the battery cell A2 in the first preset direction X1. Then, the first roller 21a and the second roller 21b are lowered by the first lifting seat 24 until the first roller 21a returns to the space between the master suction plate 11a and the first slave suction plate 12a, and the second roller 21b returns to the space between the master suction plate 11a and the second slave suction plate 13 a. As an example, the rubberizing device may apply the rubberizing in a glue rolling manner, so as to avoid the wrinkles generated by the adhesive tape A3 in the rubberizing process.

Transferring the coating device to a blanking station: and blanking the coated battery cell A2 on the first supporting surface 11 by using a blanking device.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A coating apparatus, comprising:

2. The coating apparatus of claim 1, wherein the support mechanism further comprises a second support surface and a third support surface, the second support surface is located on a side of the first roller facing away from the first support surface, the third support surface is located on a side of the second roller facing away from the first support surface, the second support surface, the third support surface, the first roller, and the second roller are configured to collectively support the protective film, and the second support surface and the third support surface are configured to be capable of absorbing the protective film.

3. The encapsulation device of claim 1, wherein the first roller and the second roller are further controllably movable toward and away from each other.

4. The coating apparatus of claim 3, wherein the coating mechanism further comprises a motion assembly comprising a first lifting seat, a first motion seat, a second motion seat, a first elastic member, and a distraction driver;

the first lifting seat is connected to the supporting mechanism in a lifting manner, the first moving seat and the second moving seat are both movably connected to the first lifting seat along the first preset direction, the first roller is mounted on the first moving seat, and the second roller is mounted on the second moving seat; the first elastic piece is connected between the first motion seat and the second motion seat, so that the first roller and the second roller have a motion trend of approaching each other; the opening driving piece is connected between the first moving seat and the second moving seat and is used for providing driving force for driving the first roller and the second roller to be far away from each other.

5. The encapsulation tool of claim 4, wherein the motion assembly further comprises a first mounting block, the first roller being mounted to the first motion seat by the first mounting block;

6. The encapsulation tool of claim 5, wherein the first mounting block has a first stroking surface as a bottom surface thereof;

7. The encapsulation tool of claim 4, wherein the motion assembly further comprises a second mounting block, the second roller being mounted to the second motion seat by the second mounting block;

8. The encapsulation tool of claim 7, wherein the second mounting block has a second stroking surface as a bottom surface thereof;

9. The encapsulation tool of claim 1, wherein the first support surface is capable of absorbing the protective film.

10. The encapsulation device of any one of claims 1 to 9, further comprising a first positioning mechanism and a second positioning mechanism each disposed on the support mechanism; the first positioning mechanism and the second positioning mechanism are respectively positioned at two sides of the first supporting surface in a second preset direction, and the second preset direction is intersected with the first preset direction;

11. The encapsulation tool of claim 10, wherein the first positioning mechanism further has a first hold down portion configured to move downward to hold the cell against the first support surface when the first clamp portion moves closer to the second clamp portion; when the first clamping part moves away from the second clamping part, the first pressing part moves upwards so as to be separated from the battery cell.

12. The coating apparatus of claim 11, wherein the first positioning mechanism comprises a second lifting seat, a first bracket, a second bracket, and a second elastic member; the second lifting seat can rise or descend in a controlled manner relative to the supporting mechanism, the first bracket is connected to the supporting mechanism in a lifting manner and is connected with the second lifting seat, and the first pressing part is arranged on the first bracket;

13. The encapsulation tool of claim 10, wherein the second positioning mechanism further has a second hold down portion configured to move downward to hold the cell against the first support surface when the second clamp portion moves closer to the first clamp portion; when the second clamping part moves away from the first clamping part, the second pressing part moves upwards so as to be separated from the battery cell.

14. The coating apparatus of claim 13, wherein the second positioning mechanism comprises a third lifting seat, a third bracket, a fourth bracket, and a third elastic member; the third lifting seat can rise or descend in a controlled manner relative to the supporting mechanism, the third bracket is connected to the supporting mechanism in a lifting manner and is connected with the third lifting seat, and the second pressing part is arranged on the third bracket;

15. A coating apparatus comprising a rubberizing device and a coating device according to any one of claims 1 to 14; when the two ends of the protective film are respectively rolled to the top surface of the battery cell by the first roller and the second roller, the rubberizing device is used for sticking adhesive tapes so as to paste and fix the two ends of the protective film to the top surface of the battery cell.