CN214830649U - Film coating equipment - Google Patents

Abstract

The embodiment of the utility model provides a coating device, which comprises an upper cavity and a lower cavity, wherein the upper cavity and the lower cavity are mutually independent; the supporting frame is used for bearing the upper-layer cavity so as to enable the upper-layer cavity to be positioned on the lower-layer cavity; the feeding platform and the discharging platform are shared by the upper layer cavity and the lower layer cavity; the feeding platform and the discharging platform are positioned on two opposite sides of the upper-layer cavity; the lower cavity comprises a lower cavity body and a lower cavity cover, the lower cavity cover is used for sealing the lower cavity body, and the lower cavity cover comprises a first cavity cover and a second cavity cover which are connected; the first chamber cover comprises a first side and a second side which are opposite, and the second chamber cover comprises a third side and a fourth side which are opposite; the coating equipment further comprises: the first driving part is connected with the lower cavity cover and drives the first side and the fourth side to lift relative to the lower cavity body, so that the lower cavity body is opened or closed. The embodiment of the utility model provides a coating equipment can the rational utilization factory building space and can improve the productivity.

Description

Film coating equipment

Technical Field

The embodiment of the utility model provides a relate to the solar energy field, in particular to coating equipment.

Background

The PECVD (plasma Enhanced Chemical Vapor deposition) coating equipment belongs to coating equipment, and can be used for forming an antireflection film or a passivation film on the surface of a solar cell piece so as to reduce the reflectivity of the solar cell piece to light or reduce the recombination probability of carriers and further improve the photoelectric conversion efficiency of the solar cell piece.

The PECVD coating equipment mainly comprises plate type PECVD coating equipment and tubular type PECVD coating equipment. The working principle of the plate type PECVD coating equipment is as follows: a plurality of solar cells are placed on a graphite or carbon fiber bracket and then are conveyed into a deposition chamber; and a flat plate type electrode is arranged in the cavity, and the process gas in the cavity forms plasma under the action of an alternating current electric field between the two polar plates, so that an antireflection film or a passivation film is deposited on the surface of the solar cell. The working principle of the tubular PECVD coating is as follows: a quartz tube is used as a deposition chamber, a resistance furnace is used as a heating body, and a graphite boat capable of holding a plurality of solar cells is inserted into the quartz tube for deposition.

However, the productivity of the current PECVD coating equipment still needs to be improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a coating equipment to improve coating equipment's productivity.

In order to solve the above problem, an embodiment of the utility model provides a coating equipment for carry out the coating film to the battery piece, include: the upper-layer cavity and the lower-layer cavity are mutually independent; the support frame is used for bearing the upper-layer cavity so as to enable the upper-layer cavity to be located on the lower-layer cavity; the upper-layer cavity and the lower-layer cavity share the feeding platform and the discharging platform; the feeding platform and the discharging platform are positioned on two opposite sides of the upper-layer cavity; the lower cavity comprises a lower cavity body and a lower cavity cover, the lower cavity cover is used for sealing the lower cavity body, and the lower cavity cover comprises a first cavity cover and a second cavity cover which are connected; the first chamber cover comprises opposing first and second sides, and the second chamber cover comprises opposing third and fourth sides; the coating equipment further comprises: the first driving part is connected with the lower cavity cover and drives the first side and the fourth side to lift relative to the lower cavity body, so that the lower cavity body is opened or closed.

In addition, the first driving part includes: a turntable, a first connecting line connecting the first side with the turntable, and a second connecting line connecting the fourth side with the turntable; the turntable is fixed at the bottom of the upper-layer cavity and rotates to drive the first connecting wire and the second connecting wire to be wound on the turntable, or the first connecting wire and the second connecting wire are driven to be released from the turntable.

In addition, the first driving part includes: the device comprises a turntable, a first connecting line, a second connecting line, a first fixed pulley, a second fixed pulley, a third fixed pulley, a fourth fixed pulley, a first movable pulley and a second movable pulley; the turntable is fixed on the support frame; the first fixed pulley and the second fixed pulley are fixed at the bottom of the upper-layer cavity; the third fixed pulley and the fourth fixed pulley are fixed on the lower-layer cavity; the first movable pulley is fixed on the first side, and the second movable pulley is fixed on the fourth side; one end of the first connecting wire is fixed at the bottom of the upper-layer cavity and sequentially passes through the first movable pulley, the first fixed pulley, the third fixed pulley and the fourth fixed pulley, and the other end of the first connecting wire is connected with the turntable; one end of the second connecting line is fixed at the bottom of the upper-layer cavity and sequentially passes through the second movable pulley, the second fixed pulley, the third fixed pulley and the fourth fixed pulley, and the other end of the second connecting line is connected with the turntable; so that the turntable rotates to drive the first connecting wire and the second connecting wire to be wound on the turntable, or drive the first connecting wire and the second connecting wire to be released from the turntable.

In addition, the lower cavity cover also comprises a connecting piece for connecting the second side and the third side, and the connecting piece is fixed on the lower cavity; when the first driving part drives the first side and the fourth side to lift relative to the lower cavity, the second side and the third side rotate around the connecting piece.

In addition, the connecting piece is a connecting shaft, the first cavity cover comprises a convex part, the convex part is positioned on the second side, the second cavity cover comprises a concave part, the concave part is positioned on the third side, and the convex part is matched with the concave part; the connecting shaft penetrates through the convex part and the concave part; when the first driving part drives the first side and the fourth side to lift relative to the lower cavity, the convex part and the concave part rotate by taking the connecting shaft as a center.

In addition, the connecting piece comprises a connecting shaft, a first fixing part and a second fixing part, wherein the first fixing part and the second fixing part are positioned on two sides of the connecting shaft; when the first driving part drives the first side and the fourth side to lift relative to the lower cavity, the first fixing part drives the second side to rotate by taking the connecting shaft as a center; the second fixing portion drives the third side to rotate around the connecting shaft.

In addition, the coating apparatus further includes: the second driving part is connected with the upper-layer cavity cover; the upper-layer cavity cover comprises a fifth side and a sixth side which are opposite, and the fifth side is fixed on the upper-layer cavity body as a fulcrum; and under the driving of the second driving part, the sixth side is lifted relative to the upper-layer cavity so as to open or close the upper-layer cavity.

In addition, the distance between the upper layer cavity and the lower layer cavity is larger than or equal to the width of the first cavity cover and the second cavity cover in the direction perpendicular to the first side.

In addition, the coating apparatus further includes: the bearing frame is suitable for bearing the battery piece; the feeding platform comprises a low-position frame inlet, a high-position frame inlet and a first bracket; the discharging platform comprises a low-position frame outlet, a high-position frame outlet and a second bracket; the coating apparatus further comprises: the control module controls the first bracket to stop at the low-position frame inlet or the high-position frame inlet so that the first bracket conveys the bearing frame and the battery piece to be coated to the low-position frame inlet and the high-position frame inlet; the control module also controls the second bracket to stop at the low-position frame outlet or the high-position frame outlet so that the second bracket receives the bearing frame conveyed out of the low-position frame outlet and the high-position frame outlet and the coated battery piece.

In addition, the coating apparatus further includes: a transfer rail; the conveying track is connected with the discharging platform and the feeding platform, and is used for conveying the bearing frame and the coated battery piece from the discharging platform to the feeding platform; the feeding platform is also used for recovering the battery piece and the bearing frame after film coating; the feeding platform is also used for placing the battery piece to be coated on the recovered bearing frame.

Compared with the prior art, the embodiment of the utility model provides a technical scheme has following advantage: the coating equipment comprises an upper layer cavity and a lower layer cavity which are mutually independent, the capacity can be increased on the premise of reasonably utilizing the space of a workshop, and the yield of the battery piece is improved. In addition, the lower-layer cavity cover comprises a first cavity cover and a second cavity cover, and when the first cavity cover and the second cavity cover are completely opened under the driving of the first driving part, the space occupied by the first cavity cover and the second cavity cover in the vertical direction is smaller, so that the space can be saved.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic view of a partial structure of a first coating apparatus according to an embodiment of the present invention during sealing;

FIG. 2 is a schematic view of a partial structure of a first coating device according to an embodiment of the present invention when opened;

FIG. 3 is a schematic view of a partial structure of a second coating apparatus according to an embodiment of the present invention during sealing;

FIG. 4 is a schematic view of a partial structure of a second coating apparatus according to an embodiment of the present invention when opened;

FIG. 5 is a top view of a first lower chamber cover of a coating apparatus according to an embodiment of the present invention;

FIG. 6 is a top view of a second lower chamber cover of a coating apparatus according to an embodiment of the present invention;

fig. 7 is a working schematic diagram of a coating apparatus provided by the embodiment of the present invention.

Detailed Description

As can be seen from the background art, the productivity of the coating apparatus in the prior art needs to be improved.

The analysis shows that the main reasons comprise: in order to improve the productivity of the coating equipment, the capacity of the coating equipment can be increased, for example, for a plate-type PECVD coating equipment, a larger bearing frame is generally used; for tubular PECVD coating equipment, more quartz tubes are typically used. However, the length and the width of the coating equipment can be greatly increased by the method, and the area of a production field is further increased, so that the two methods are difficult to popularize due to the limitation of the production field, and the productivity of the existing coating equipment is still to be improved.

In order to solve the above problems, an embodiment of the present invention provides a coating apparatus, which includes an upper chamber and a lower chamber that are independent from each other, wherein the upper chamber and the lower chamber share a feeding platform and a discharging platform, so that the utility model can improve the productivity of the coating apparatus under the condition of reasonably utilizing the space of a factory building; in addition, the lower cavity cover of the lower cavity comprises a first cavity cover and a second cavity cover which are connected, namely the lower cavity cover is divided into two parts, under the driving of the first driving part, the first side of the first cavity cover and the fourth side of the second cavity cover lift relative to the lower cavity, and after the first side and the fourth side are completely lifted, the space height occupied by the first cavity cover and the second cavity cover is smaller than that occupied by a complete cavity cover, so that the space can be saved.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in the embodiments of the present invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

Fig. 1-7 are schematic views of a coating apparatus provided in an embodiment of the present invention, referring to fig. 1-7, the coating apparatus is used for coating a battery plate, and the coating apparatus includes: an upper chamber 100 and a lower chamber 110, the upper chamber 100 and the lower chamber 110 being independent of each other; a support frame for supporting the upper chamber 100 so that the upper chamber 100 is located on the lower chamber 110; the feeding platform 170 and the discharging platform 180, and the upper chamber 100 and the lower chamber 110 share the feeding platform 170 and the discharging platform 180; the feeding platform 170 and the discharging platform 180 are positioned at two opposite sides of the upper chamber 100; the lower chamber 110 includes a lower chamber 111 and a lower chamber cover 112, the lower chamber cover 112 is used for sealing the lower chamber 111, and the lower chamber cover 112 includes a first chamber cover 113 and a second chamber cover 114 connected to each other; the first chamber cover 113 includes opposing first and second sides 121, 122, and the second chamber cover 114 includes opposing third and fourth sides 123, 124; the coating equipment further comprises: and a first driving part connected to the lower chamber cover 112 and driving the first side 121 and the fourth side 124 to move up and down with respect to the lower chamber 111, so that the lower chamber 111 is opened or closed.

The following detailed description will be made in conjunction with the accompanying drawings.

Referring to fig. 1 to 7, in the present embodiment, the coating apparatus is a plate-type PECVD coating apparatus. The damage of plasma excited by the plate-type PECVD coating equipment to the surface of the battery piece is small, and the passivation effect is better than that of the tubular PECVD coating equipment.

When plate-type PECVD coating equipment is used for coating, a bearing frame (not shown) is required and is suitable for bearing the battery piece. The bearing frame is usually a graphite frame, and comprises a frame body formed by surrounding a frame and a plurality of ribs arranged in the frame body, wherein the plurality of ribs are distributed in a staggered manner to form a plurality of graphite grids. The bearing frame can adopt the specification of 6 × 10, 6 × 12 or 8 × 10, thereby improving the accommodation capacity of the bearing frame.

The coating equipment is of an upper-lower double-layer structure and comprises an upper-layer chamber 100 and a lower-layer chamber 110 which are independent from each other. Namely, the upper chamber 100 and the lower chamber 110 are not affected by each other, and are controlled by independent special gas pipelines and microwave sources. Compared with the technical scheme that the upper layer and the lower layer share one chamber and the battery piece is coated in a double-layer overlapping mode, the upper layer chamber 100 and the lower layer chamber 110 in the embodiment are independent from each other, PN junction damage caused by mutual friction of two battery pieces in the transmission process can be avoided, and the phenomenon of plating winding caused by incomplete overlapping of the two battery pieces can be avoided; and the use of a sheet turning device can be avoided. Therefore, the upper chamber 100 and the lower chamber 110 are independent from each other, which can improve the yield of the battery piece and simplify the production equipment.

The coating equipment is provided with a plurality of upper-layer chambers 100 and a plurality of lower-layer chambers 110, and each of the upper-layer chambers 100 and the lower-layer chambers 110 comprises a feeding cavity, a preheating cavity, a plurality of process cavities and a discharging cavity.

In this embodiment, the upper chamber 100 is positioned above the lower chamber 110 by using a support frame (not shown) to support the upper chamber. Specifically, the support frame includes a support surface on which the upper chamber 100 is disposed and a plurality of support columns between which the lower chamber 110 is disposed. In other embodiments, the shape of the support frame may be configured according to the specific conditions of the upper chamber and the lower chamber.

The upper chamber 100 includes an upper chamber 101 and an upper cover 102, and the upper cover 102 is used for sealing the upper chamber 101; the lower chamber 110 includes a lower chamber body 111 and a lower chamber cover 112, and the lower chamber cover 112 is used for sealing the lower chamber body 111.

During the coating process, a solid deposition layer is formed because a portion of the reaction gas is deposited on the upper chamber cover 102 and the lower chamber cover 112. Therefore, a timed cleaning of the lower chamber cover 112 and the upper chamber cover 102 is required. To improve the cleaning efficiency, it is usually necessary to completely open the lower chamber cover 112 and the upper chamber cover 102, i.e., the lower chamber cover 112 and the upper chamber cover 102 are in a vertical direction to the horizontal plane.

When the lower chamber cover 112 and the upper chamber cover 102 are completely opened, the space of the factory building in the vertical direction is occupied. The lower chamber cover 112 comprises a first chamber cover 113 and a second chamber cover 114 connected, i.e. the lower chamber cover 112 consists of two half covers, which when fully opened have a lower height than the complete one-piece chamber cover, enabling space saving.

It is understood that the distance between the upper chamber 100 and the lower chamber 110 is greater than or equal to the width of the first cover 113 and the second cover 114 in the direction perpendicular to the first side 121. In this way, it can be ensured that the first and second chamber covers 113 and 114 can be completely opened and in a vertical direction, thereby facilitating cleaning.

In this embodiment, to simplify the assembly of the upper chamber cover 102, the upper chamber cover 102 is a complete one-piece chamber cover. In other embodiments, the upper chamber cover can be designed as two half covers connected to each other to further save space in the vertical direction.

The coating apparatus further includes a first driving part, which is connected to the lower chamber cover 112 and drives the first side 121 and the fourth side 124 to move up and down relative to the lower chamber 111, so that the lower chamber 111 is opened or closed.

The first driving section mainly includes two examples, and the first driving section will be described in detail below.

As an example, referring to fig. 1 to 2, the first driving part includes: a turntable 145, first and second connection lines 151 and 152, a first fixed pulley 141, a second fixed pulley 142, a third fixed pulley 143, a fourth fixed pulley 144, a first movable pulley 131, and a second movable pulley 132.

The turntable 145 is fixed to the support frame, and in particular, the turntable 145 is fixed to a support column of the support frame. In other embodiments, the turntable may also secure the sidewalls of the lower chamber.

The first fixed sheave 141 and the second fixed sheave 142 are fixed to the bottom of the upper chamber 101. In other embodiments, the first fixed pulley and the second fixed pulley can also be fixed on the supporting surface of the supporting frame.

The third fixed pulley 143 and the fourth fixed pulley 144 are fixed on the lower chamber 111, specifically, the third fixed pulley 143 is opposite to the first fixed pulley 141 and the second fixed pulley 142, the fourth fixed pulley 144 is located on the side wall of the lower chamber 111, and in other embodiments, the fourth fixed pulley may also be fixed on the support column of the support frame.

The first movable pulley 131 is fixed to the first side 121, and the second movable pulley 132 is fixed to the fourth side 124.

One end of the first connecting wire 151 is fixed to the bottom of the upper chamber 100, and in other embodiments, one end of the first connecting wire may also be fixed to a supporting surface of the supporting frame. The first connecting line 151 passes through the first movable pulley 131, the first fixed pulley 141, the third fixed pulley 143, and the fourth fixed pulley 144 in this order, and the other end of the first connecting line 151 is connected to the turntable 145.

One end of the second connecting wire 152 is fixed to the bottom of the upper chamber 100, and in other embodiments, one end of the first connecting wire may also be fixed to the supporting surface of the supporting frame. The second connecting line 152 passes through the second movable pulley 132, the second fixed pulley 142, the third fixed pulley 143, and the fourth fixed pulley 144 in sequence, and the other end of the second connecting line 151 is connected to the turntable 145.

The rotation of the turntable 145 drives the first connection line 151 and the second connection line 152 to wind around the turntable 145, or drives the first connection line 151 and the second connection line 152 to release from the turntable. When the first connection line 151 and the second connection line 152 are wound on the turntable 145, the first connection line 151 pulls the first side 121, and the second connection line 152 pulls the fourth side 124, so that the first side 121 and the fourth side 124 are lifted, and the lower cavity 111 is opened. When the first connection line 151 and the second connection line 152 are released from the turntable 145, the first connection line 151 drives the first side 121, and the second connection line 152 drives the fourth side 124, so that the first side 121 and the fourth side 124 descend, and the lower cavity 111 is closed.

In this embodiment, when the lower cavity 111 needs to be opened, the motor drives the turntable 145 to rotate, so that the first connection line 151 and the second connection line 152 are wound on the turntable 145; when the lower cavity 111 needs to be closed, the motor is closed, and the lower cavity cover 112 can slowly descend by means of the self gravity, so that more energy can be saved. In other embodiments, the turntable can be driven by a motor when the lower chamber is closed.

In the first example, since the first movable pulley 131 and the second movable pulley 132 are provided, the turntable 145 can save more labor when driving the first connecting line 151 and the second connecting line 152, thereby saving more energy.

Example two, referring to fig. 3 to 4, the first driving part includes: a turntable 145, a first connection line 151 and a second connection line 152, the first connection line 151 connecting the first side 121 with the turntable 145, the second connection line 152 connecting the fourth side 124 with the turntable 145.

The turntable 145 is fixed to the bottom of the upper chamber 100, and in other embodiments, the turntable may be fixed to a supporting surface of the supporting frame. The rotation of the turntable 145 drives the first connection line 151 and the second connection line 152 to wind around the turntable 145, or drives the first connection line 151 and the second connection line 152 to release from the turntable 145.

In example two, since the fixed pulley or the movable pulley is not provided, the first driving section is simpler.

Referring to fig. 1 to 4, the coating apparatus further includes a second driving part 107, and the second driving part 107 is connected to the upper chamber cover 102; the upper-layer cavity cover 102 comprises a fifth side 105 and a sixth side 106 which are opposite, and the fifth side 105 is used as a fulcrum to be fixed on the upper-layer cavity 101; the sixth side 106 is lifted and lowered with respect to the upper chamber 101 by the second driving unit 107, so that the upper chamber 101 is opened or closed.

In this embodiment, the second driving portion 107 is a hydraulic motor, and the structure of the hydraulic motor is relatively simple. In other embodiments, the upper cavity can be opened or closed by arranging the pulley block.

With continued reference to fig. 1-4, the lower chamber cover 113 further includes a connecting member 160 connecting the second side 122 and the third side 133, the connecting member 160 being fixed to the lower chamber 111; when the first driving part drives the first side 121 and the fourth side 124 to move up and down relative to the lower chamber 111, the second side 122 and the third side 123 rotate around the connecting member 160. The connection of the first cover 113 and the second cover 114 will be described in detail below.

First, referring to fig. 5, fig. 5 is a top view of the first lower chamber cover 112. The connecting member 160 is a connecting shaft, the first chamber cover 113 includes a protruding portion 125, the protruding portion 125 is located on the second side 122, the second chamber cover 114 includes a recessed portion 126, the recessed portion 126 is located on the third side 123, and the protruding portion 125 matches with the recessed portion 126; the connecting shaft penetrates through the convex part 125 and the concave part 126; when the first driving part drives the first side 121 and the fourth side 124 to move up and down relative to the lower cavity 111 (refer to fig. 1-4), the protrusion 125 and the recess 126 rotate around the connecting shaft. That is, as an example, the first and second covers 113 and 114 are formed in a concave-convex shape, the number of components of the connection member 160 can be reduced.

Second, referring to fig. 6, fig. 6 is a top view of a second lower chamber cover 112. The connecting member 160 includes a connecting shaft 163, and a first fixing portion 161 and a second fixing portion 162 located at both sides of the connecting shaft 163. In this embodiment, the connecting member 160 is a hinge. The second side 122 is fixed on the first fixing portion 161, and the third side 123 is fixed on the second fixing portion 162; when the first driving portion drives the first side 121 and the fourth side 124 to ascend and descend relative to the lower cavity 111 (refer to fig. 1-4), the first fixing portion 161 drives the second side 122 to rotate around the connecting shaft 163; the second fixing portion 162 drives the third side 123 to rotate around the connecting shaft 163. I.e., the second side 122 and the third side 123 in the second example are vertical, the manufacturing process of the first cover 113 and the second cover 114 can be simplified.

The coating apparatus further includes a feeding stage 170, a discharging stage 180, and a transfer rail 190. The upper chamber 100 and the lower chamber 110 share the feeding platform 170 and the discharging platform 180, so that the occupied space of the coating equipment can be saved, and the components of the coating equipment can be simplified. The transfer rail 190 connects the feeding stage 170 with the discharging stage 180 to realize full automation of the cell transfer process.

The following will specifically describe the process of transporting the battery piece in the coating equipment.

Referring to fig. 7, the feeding platform 170 includes a lower frame inlet 173, an upper frame inlet 172 and a first bracket 171; the discharging platform 180 includes a lower frame outlet 183, a higher frame outlet 182, and a second bracket 181. In this embodiment, the feeding platform 170 further comprises a feeding opening 175 and a first transfer opening 174. The outfeed platform 150 further comprises a second transfer port 184.

The coating equipment further comprises: and the control module controls the first bracket 171 to stop at the low-position frame inlet 173 or the high-position frame inlet 172, so that the first bracket 171 conveys the bearing frame and the battery piece to be coated to the low-position frame inlet 171 and the high-position frame inlet 172.

Specifically, the control module controls the first bracket 171 to stop at the feeding opening 175 first. At the material loading opening 175, the battery piece to be coated is placed on the carrying frame, and the carrying frame and the battery piece are placed on the first bracket 171 together. The control module controls the first bracket 171 to be lifted to the first transfer opening 174, and the first transfer opening 174 is flush with the high level frame inlet 172. When the first bracket 171 is lifted to the first transfer opening 174, the control module changes the moving direction of the first bracket 171 to make it move to the high-position frame inlet 172, and when the first bracket 171 moves to the high-position frame inlet 172, the control module controls the frame and the battery piece to be coated to enter the upper chamber 100.

After the first bracket 171 transfers the bearing frame and the battery piece to be coated, the first bracket 171 returns to the feeding port 175, the control module controls the first bracket 171 to complete feeding again, and after the feeding is completed, the control module controls the first bracket 171 to sequentially pass through the first transfer port 174, the high-position frame inlet 172 and the low-position frame inlet 173, and transport the bearing frame and the battery piece to be coated to the lower chamber 110.

After the coating process of the lower chamber 110 or the upper chamber 100, the cell is transferred to the lower frame outlet 183 or the upper frame outlet 182. The control module further controls the second bracket 181 to stop at the low-position frame outlet 183 or the high-position frame inlet, so that the second bracket 181 receives the carrying frame and the coated battery pieces conveyed from the low-position frame outlet 183 and the high-position frame outlet 182, and the second bracket 181 conveys the coated battery pieces and the carrying frame to the second transfer port 184.

The coating equipment further comprises: the conveying track 190, the conveying track 190 is connected to the discharging platform 180 and the feeding platform 170, in this embodiment, the conveying track 190 is flush with the feeding opening 175 and the second transferring opening 184. The conveying rail 190 is used for conveying the bearing frame and the coated battery piece from the discharging platform 180 to the feeding platform 170.

The feeding platform 170 is further used for recycling the coated battery piece and the bearing frame; the feeding platform 170 is also used for placing the battery piece to be coated on the recovered bearing frame. Specifically, after the conveying rail 190 conveys the coated battery pieces and the carrier frame to the feeding platform 170, the coated battery pieces and the carrier frame are recovered at the feeding opening 175 to complete the whole conveying process of the battery pieces, and the conveying process of the next batch of battery pieces is started.

In summary, in the embodiment, the coating apparatus includes the upper chamber and the lower chamber that are independent of each other, so that the productivity and the yield of the battery pieces can be improved while the plant space is reasonably utilized. In addition, the lower cavity cover is designed to be the combination of the first cavity cover and the second cavity cover, the first cavity cover and the second cavity cover are lifted through the first driving part, and the space occupied by the film coating equipment in the vertical direction can be further reduced.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A coating equipment is used for coating a battery piece, and is characterized by comprising:

the upper-layer cavity and the lower-layer cavity are mutually independent;

the support frame is used for bearing the upper-layer cavity so as to enable the upper-layer cavity to be located on the lower-layer cavity;

the upper-layer cavity and the lower-layer cavity share the feeding platform and the discharging platform; the feeding platform and the discharging platform are positioned on two opposite sides of the upper-layer cavity;

the lower cavity comprises a lower cavity body and a lower cavity cover, the lower cavity cover is used for sealing the lower cavity body, and the lower cavity cover comprises a first cavity cover and a second cavity cover which are connected; the first chamber cover comprises opposing first and second sides, and the second chamber cover comprises opposing third and fourth sides;

the upper-layer cavity comprises an upper-layer cavity body and an upper-layer cavity cover, and the upper-layer cavity cover is used for sealing the upper-layer cavity body;

the coating equipment further comprises: the first driving part is connected with the lower cavity cover and drives the first side and the fourth side to lift relative to the lower cavity body, so that the lower cavity body is opened or closed.

2. The plating device according to claim 1, wherein the first drive portion comprises: a turntable, a first connecting line connecting the first side with the turntable, and a second connecting line connecting the fourth side with the turntable; the turntable is fixed at the bottom of the upper-layer cavity and rotates to drive the first connecting wire and the second connecting wire to be wound on the turntable, or the first connecting wire and the second connecting wire are driven to be released from the turntable.

3. The plating device according to claim 1, wherein the first drive portion comprises: the device comprises a turntable, a first connecting line, a second connecting line, a first fixed pulley, a second fixed pulley, a third fixed pulley, a fourth fixed pulley, a first movable pulley and a second movable pulley;

the turntable is fixed on the support frame; the first fixed pulley and the second fixed pulley are fixed at the bottom of the upper-layer cavity; the third fixed pulley and the fourth fixed pulley are fixed on the lower-layer cavity; the first movable pulley is fixed on the first side, and the second movable pulley is fixed on the fourth side; one end of the first connecting wire is fixed at the bottom of the upper-layer cavity and sequentially passes through the first movable pulley, the first fixed pulley, the third fixed pulley and the fourth fixed pulley, and the other end of the first connecting wire is connected with the turntable; one end of the second connecting line is fixed at the bottom of the upper-layer cavity and sequentially passes through the second movable pulley, the second fixed pulley, the third fixed pulley and the fourth fixed pulley, and the other end of the second connecting line is connected with the turntable; so that the turntable rotates to drive the first connecting wire and the second connecting wire to be wound on the turntable, or drive the first connecting wire and the second connecting wire to be released from the turntable.

4. The plating apparatus according to claim 1, wherein the lower chamber cover further comprises a connecting member connecting the second side and the third side, the connecting member being fixed to the lower chamber body; when the first driving part drives the first side and the fourth side to lift relative to the lower cavity, the second side and the third side rotate around the connecting piece.

5. The plating apparatus according to claim 4, wherein the connecting member is a connecting shaft, the first chamber cover includes a convex portion on the second side, the second chamber cover includes a concave portion on the third side, and the convex portion matches the concave portion; the connecting shaft penetrates through the convex part and the concave part; when the first driving part drives the first side and the fourth side to lift relative to the lower cavity, the convex part and the concave part rotate by taking the connecting shaft as a center.

6. The plating apparatus according to claim 4, wherein the connecting member includes a connecting shaft, and a first fixing portion and a second fixing portion on both sides of the connecting shaft, the second side being fixed to the first fixing portion, and the third side being fixed to the second fixing portion; when the first driving part drives the first side and the fourth side to lift relative to the lower cavity, the first fixing part drives the second side to rotate by taking the connecting shaft as a center; the second fixing portion drives the third side to rotate around the connecting shaft.

7. The plating device according to claim 1, further comprising: the second driving part is connected with the upper-layer cavity cover; the upper-layer cavity cover comprises a fifth side and a sixth side which are opposite, and the fifth side is fixed on the upper-layer cavity body as a fulcrum; and under the driving of the second driving part, the sixth side is lifted relative to the upper-layer cavity so as to open or close the upper-layer cavity.

8. The plating apparatus according to claim 1, wherein the distance between the upper chamber and the lower chamber is greater than or equal to the width of the first chamber cover and the second chamber cover in a direction perpendicular to the first side.

9. The plating device according to claim 1, further comprising: the bearing frame is suitable for bearing the battery piece; the feeding platform comprises a low-position frame inlet, a high-position frame inlet and a first bracket; the discharging platform comprises a low-position frame outlet, a high-position frame outlet and a second bracket; the coating apparatus further comprises:

the control module controls the first bracket to stop at the low-position frame inlet or the high-position frame inlet so that the first bracket conveys the bearing frame and the battery piece to be coated to the low-position frame inlet and the high-position frame inlet; the control module also controls the second bracket to stop at the low-position frame outlet or the high-position frame outlet so that the second bracket receives the bearing frame conveyed out of the low-position frame outlet and the high-position frame outlet and the coated battery piece.

10. The plating device according to claim 9, further comprising: a transfer rail; the conveying track is connected with the discharging platform and the feeding platform, and is used for conveying the bearing frame and the coated battery piece from the discharging platform to the feeding platform; the feeding platform is also used for recovering the battery piece and the bearing frame after film coating; the feeding platform is also used for placing the battery piece to be coated on the recovered bearing frame.

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