CN116273769A

CN116273769A - Oven, drying method, coating machine and coating system

Info

Publication number: CN116273769A
Application number: CN202310488719.3A
Authority: CN
Inventors: 黄少清; 贺四清; 汪振富; 程强
Original assignee: Foshan Golden Milky Way Intelligent Equipment Co Ltd
Current assignee: Foshan Golden Milky Way Intelligent Equipment Co Ltd
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-06-23

Abstract

The invention relates to the field of lithium battery production, in particular to an oven, a drying method, a coating machine and a coating system. The oven comprises a first air nozzle group, a second air nozzle group, a third air nozzle group, a fourth air nozzle group and N carrier roller groups; the first air nozzle group comprises A first air nozzles which are positioned on a first plane and are distributed at intervals along a first direction; the second air nozzle group comprises B second air nozzles which are arranged on a second plane at intervals along the first direction; the third air nozzle group comprises C third air nozzles which are arranged on a third plane at intervals along the first direction; the fourth air nozzle group comprises D fourth air nozzles which are arranged on a fourth plane at intervals along the first direction; the four planes are parallel to each other; the length of the projection of the four tuyere sets in the first direction is smaller than the sum of the lengths of the four tuyere sets in the first direction; the carrier roller group is used for supporting the pole piece to flow through the first, second, third and fourth tuyere groups in sequence. The length of the oven in the first direction is reduced, and the occupied area of the oven is reduced.

Description

Oven, drying method, coating machine and coating system

Technical Field

The invention relates to the technical field of lithium battery production, in particular to an oven, a drying method, a coating machine and a coating system.

Background

The coating process in the existing lithium battery production process is a critical process, in which wet slurry is coated on the upper and lower surfaces of a foil through a coater to form a coated pole piece, then the wet coated pole piece is baked at a high temperature or by hot air through an oven, and the solvent in the coated pole piece is baked to form a dried coated pole piece.

The conventional oven for drying the wet coated pole piece generally adopts a scheme that the front and back sides of the single-sided wet coated pole piece are respectively provided with a tuyere group for carrying out linear heating and baking, the length of the single-sided wet coating is only half of the length of the corresponding front and back tuyere groups, the length of the single-sided wet coated pole piece which can be accommodated by the oven is equal to that of the oven, the length of the oven is overlong, the whole length of a coating machine is overlong, the occupied area is larger, the surface area of the oven occupied by the unit length of the pole piece is larger, the heat dissipation area is larger, and the heat loss is larger.

Disclosure of Invention

The invention provides an oven, a drying method, a coating machine and a coating system, which are used for solving the technical problems of overlong oven and large occupied area caused by the fact that an oven for drying a coated pole piece adopts a linear heating baking scheme in the prior art.

An oven provided in a first aspect of the present invention includes:

the first air nozzle group, the second air nozzle group, the third air nozzle group, the fourth air nozzle group and N carrier roller groups are arranged, wherein N is more than or equal to 2 and less than or equal to 4;

the first air nozzle group comprises A first air nozzles positioned on a first plane, and the A first air nozzles are arranged at intervals along a first direction;

the second air nozzle group comprises B second air nozzles positioned on a second plane, and the B second air nozzles are arranged at intervals along the first direction;

the third air nozzle group comprises C third air nozzles positioned on a third plane, and the C third air nozzles are distributed at intervals along the first direction;

the fourth air nozzle group comprises D fourth air nozzles which are positioned on a fourth plane, and the D fourth air nozzles are arranged at intervals along the first direction;

the first plane, the second plane, the third plane and the fourth plane are parallel to each other, A, B, C and D are integers greater than or equal to 1;

the projected lengths of the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction are smaller than the sum of the lengths of the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction;

n the bearing roller sets are used for supporting the pole piece to flow through the first tuyere set, the second tuyere set, the third tuyere set and the fourth tuyere set in sequence, when the pole piece passes through the first tuyere set, the first surface to be dried of the pole piece faces the first tuyere, when the pole piece passes through the second tuyere set, the first surface to be dried faces the second tuyere, when the pole piece passes through the third tuyere set, the second surface to be dried of the pole piece faces the third tuyere, and when the pole piece passes through the fourth tuyere set, the second surface to be dried faces the fourth tuyere.

In a first possible implementation of the first aspect, the first tuyere set, the second tuyere set, the third tuyere set and the fourth tuyere set are aligned in a direction perpendicular to the first direction.

In a second possible implementation of the first aspect, the second plane and the third plane are located between the first plane and the fourth plane, the second plane being adjacent to the first plane;

the wind directions of the first wind nozzle and the second wind nozzle are opposite, and the wind directions of the third wind nozzle and the fourth wind nozzle are opposite;

the N carrier roller groups comprise a first carrier roller group and a second carrier roller group;

the first carrier roller set is arranged between the first plane and the second plane, and the second carrier roller set is arranged between the third plane and the fourth plane.

In combination with the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the first idler set includes a first reversing roller with an axis in a fifth plane and a first idler, and a first idler and the first reversing roller are sequentially arranged in parallel at intervals, where the axis of the first idler is perpendicular to the first direction, and a is an integer greater than 1;

the second carrier roller group comprises a second reversing roller and b second carrier rollers, wherein the axis of the second reversing roller is positioned on a sixth plane, the b second carrier rollers and the second reversing roller are sequentially arranged in parallel at intervals, the axis of the second carrier roller is perpendicular to the first direction, and b is an integer larger than 1;

The first plane, the fifth plane and the sixth plane are parallel to each other;

the first reversing roller is used for adjusting the flow direction of the pole piece so as to change the first surface to be dried from facing the first air nozzle to facing the second air nozzle;

the second reversing roller is used for adjusting the flow direction of the pole piece so as to change the second surface to be dried from facing the third air nozzle to facing the fourth air nozzle.

With reference to the third possible implementation of the first aspect, in a fourth possible implementation of the first aspect, the first roller set is further provided with a first turning roller for guiding the pole piece to flow from the first roller to the second roller;

the second carrier roller set is also provided with a second turning roller and a third turning roller which are used for guiding the pole piece to flow out of the second carrier roller.

With reference to the third possible implementation of the first aspect or the fourth possible implementation of the first aspect, in the fifth possible implementation of the first aspect, the first air nozzles and the second air nozzles are in one-to-one correspondence, and the third air nozzles and the fourth air nozzles are in one-to-one correspondence;

the first carrier roller corresponds to the first tuyere, and the second carrier roller corresponds to the third tuyere;

or, the first carrier roller corresponds to the interval between two adjacent first tuyeres, and the second carrier roller corresponds to the interval between two adjacent third tuyeres.

In a sixth possible implementation of the first aspect, the first plane and the second plane are located between the third plane and the fourth plane, the first plane being adjacent to the fourth plane;

the N carrier roller groups comprise a first carrier roller group, a second carrier roller group and a third carrier roller group;

the first carrier roller set is arranged between the first plane and the second plane, the second carrier roller set is arranged between the second plane and the third plane, and the third carrier roller set is arranged between the first plane and the fourth plane.

In a seventh possible implementation of the first aspect, the second plane and the third plane are located between the first plane and the fourth plane, the second plane being adjacent to the first plane;

the first carrier roller set is arranged between the first plane and the second plane, the second carrier roller set is arranged between the second plane and the third plane, and the third carrier roller set is arranged on one side of the fourth plane far away from the third plane.

In combination with the sixth possible implementation of the oven of the first aspect or the seventh possible implementation of the first aspect, in the eighth possible implementation of the oven of the first aspect, the first idler set includes a first reversing roller and a first idler, the a first idler and the first reversing roller are sequentially arranged in parallel at intervals, the axis of the first idler is perpendicular to the first direction, and a is an integer greater than 1;

the second carrier roller group comprises b second carrier rollers with axes in a sixth plane, the b second carrier rollers are sequentially arranged in parallel at intervals, the axes of the second carrier rollers are perpendicular to the first direction, and b is an integer greater than 1;

the third carrier roller group comprises c third carrier rollers with axes in a seventh plane, the c third carrier rollers are sequentially arranged in parallel at intervals, the axes of the third carrier rollers are perpendicular to the first direction, and c is an integer greater than 1;

the first reversing roller is used for adjusting the flow direction of the pole piece;

the first plane, the fifth plane, the sixth plane and the seventh plane are parallel to each other.

With reference to the eighth possible implementation oven of the first aspect, in the ninth possible implementation oven of the first aspect, the first air nozzles are in one-to-one correspondence with the second air nozzles, and the third air nozzles are in one-to-one correspondence with the fourth air nozzles;

The first carrier roller corresponds to the first tuyere, the second carrier roller corresponds to the third tuyere, and the third carrier roller corresponds to the fourth tuyere;

or, the first carrier roller corresponds to the interval between two adjacent first tuyeres, the second carrier roller corresponds to the interval between two adjacent third tuyeres, and the third carrier roller corresponds to the interval between two adjacent fourth tuyeres.

With reference to the sixth possible implementation of the first aspect or the seventh possible implementation of the first aspect, in the tenth possible implementation of the first aspect, the first plane, the second plane, the third plane, and the fourth plane are replaced with the fourth plane, the third plane, the second plane, and the first plane, respectively;

the first air nozzle, the second air nozzle, the third air nozzle and the fourth air nozzle are replaced by the fourth air nozzle, the third air nozzle, the second air nozzle and the first air nozzle respectively;

the first idler set and the third idler set are replaced by the third idler set and the first idler set respectively.

In an eleventh possible implementation of the first aspect, the first plane and the second plane are located between the third plane and the fourth plane, the first plane being adjacent to the fourth plane;

the N carrier roller groups comprise a first carrier roller group, a second carrier roller group, a third carrier roller group and a fourth carrier roller group;

the first carrier roller set and the second carrier roller set are arranged between the first plane and the second plane, and the first carrier roller set is close to the first plane;

the third carrier roller set is arranged between the second plane and the third plane, and the fourth carrier roller set is arranged between the first plane and the fourth plane.

In a twelfth possible implementation of the first aspect, the second plane and the third plane are located between the first plane and the fourth plane, the second plane being adjacent to the first plane;

the third carrier roller set is arranged between the second plane and the third plane;

The fourth plane is arranged between the fourth carrier roller set and the third plane.

In combination with the eleventh possible oven of the first aspect or the twelfth possible oven of the first aspect, in the twelfth possible oven of the first aspect, the first roller set includes a first rollers with axes in a fifth plane, a first rollers are sequentially arranged in parallel at intervals, and the axes of the first rollers are perpendicular to the first direction;

the second carrier roller group comprises b second carrier rollers with axes in a sixth plane, the b second carrier rollers are sequentially arranged in parallel at intervals, and the axes of the second carrier rollers are perpendicular to the first direction;

the third carrier roller group comprises c third carrier rollers with axes in a seventh plane, the c third carrier rollers are sequentially arranged in parallel at intervals, and the axes of the third carrier rollers are perpendicular to the first direction;

the fourth carrier roller group comprises d fourth carrier rollers with axes in an eighth plane, the d fourth carrier rollers are sequentially arranged in parallel at intervals, and the axes of the fourth carrier rollers are perpendicular to the first direction;

a. b, c and d are integers greater than 1;

the first plane, the fifth plane, the sixth plane, the seventh plane and the eighth plane are parallel to each other.

With reference to the thirteenth possible implementation of the first aspect, in the fourteenth possible implementation of the first aspect, the first air nozzles and the second air nozzles are in one-to-one correspondence, and the third air nozzles and the fourth air nozzles are in one-to-one correspondence;

the first carrier roller corresponds to the first air nozzle, the second carrier roller corresponds to the second air nozzle, the third carrier roller corresponds to the third air nozzle, and the fourth carrier roller corresponds to the fourth air nozzle;

or, the first carrier roller corresponds to the interval between two adjacent first tuyeres, the second carrier roller corresponds to the interval between two adjacent second tuyeres, the third carrier roller corresponds to the interval between two adjacent third tuyeres, and the fourth carrier roller corresponds to the interval between two adjacent fourth tuyeres.

With reference to the eleventh possible implementation of the first aspect or the twelfth possible implementation of the first aspect, in the fourteenth possible implementation of the first aspect, the first plane, the second plane, the third plane, and the fourth plane are replaced with the fourth plane, the third plane, the second plane, and the first plane, respectively;

The first carrier roller set, the second carrier roller set, the third carrier roller set and the fourth carrier roller set are replaced by the fourth carrier roller, the third carrier roller, the second carrier roller set and the first carrier roller set respectively.

In a sixteenth possible implementation of the first aspect, the first tuyere, the second tuyere, the third tuyere and the fourth tuyere are each provided with a support roller having an axis perpendicular to the first direction.

In the seventeenth possible implementation of the oven of the first aspect, the oven further includes:

the device comprises a circulating fan, a heating bag, a circulating air pipe, an air return port, a fresh air port and an air outlet;

the circulating fan and the heating bag are arranged in the circulating air pipe;

the return air inlet is arranged at the input end of the circulating air pipe;

the air outlet is close to the air return opening;

the fresh air port is arranged between the air outlet and the circulating fan;

the output end of the circulating fan is connected with the input end of the heating bag, and the output end of the circulating air pipe is connected with the first air nozzle, the second air nozzle, the third air nozzle and the fourth air nozzle.

In an eighteenth possible implementation of the first aspect, the oven further includes: a rectifying unit for moving the pole piece back to the correct flow path.

The drying method provided by the second aspect of the invention comprises the following steps:

The pole piece is driven to flow in a state that a first surface to be dried faces a first tuyere through the carrier roller group;

drying the first surface to be dried through a first tuyere set;

adjusting the flow direction of the pole piece to enable the first surface to be dried to face the second tuyere;

the pole piece is driven to flow through N carrier roller groups, and the first drying surface is dried through a second air nozzle group;

adjusting the flow direction of the pole piece to enable the second surface to be dried of the pole piece to face the third tuyere;

the pole piece is driven to flow through N carrier roller groups, and the second surface to be dried is dried through a third air nozzle group;

adjusting the flow direction of the pole piece to enable the second surface to be dried of the pole piece to face the fourth tuyere;

the pole piece is driven to flow through N carrier roller groups, and the second surface to be dried is dried through a fourth air nozzle group.

A third aspect of the present invention provides a coater, comprising:

an oven of any one of the possible implementations provided in the first aspect.

A fourth aspect of the present invention provides a coating system comprising:

any one of the possible coating machines and winding and unwinding devices provided in the third aspect.

From the above technical scheme, the invention has the following advantages:

The baking oven provided by the invention is provided with a first air nozzle group, a second air nozzle group, a third air nozzle group, a fourth air nozzle group and N carrier roller groups, wherein N is more than or equal to 2 and less than or equal to 4; the first air nozzle group comprises A first air nozzles positioned on a first plane, and the A first air nozzles are arranged at intervals along a first direction; the second air nozzle group comprises B second air nozzles positioned on a second plane, and the B second air nozzles are arranged at intervals along the first direction; the third air nozzle group comprises C third air nozzles positioned on a third plane, and the C third air nozzles are arranged at intervals along the first direction; the fourth air nozzle group comprises D fourth air nozzles which are positioned on a fourth plane, and the D fourth air nozzles are arranged at intervals along the first direction; the first plane, the second plane, the third plane and the fourth plane are parallel to each other, and A, B, C and D are integers greater than or equal to 1; the length of the projections of the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction is smaller than the sum of the lengths of the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction; the N carrier roller sets are used for supporting the pole piece to flow through the first tuyere set, the second tuyere set, the third tuyere set and the fourth tuyere set in sequence, when the pole piece passes through the first tuyere set, the first surface to be dried of the pole piece faces the first tuyere, when the pole piece passes through the second tuyere set, the first surface to be dried faces the second tuyere, when the pole piece passes through the third tuyere set, the second surface to be dried of the pole piece faces the third tuyere, and when the pole piece passes through the fourth tuyere set, the second surface to be dried faces the fourth tuyere. The first surface to be dried of the pole piece is dried sequentially through the first tuyere group and the second tuyere group, the second surface to be dried of the pole piece is dried sequentially through the third tuyere group and the fourth tuyere group, and therefore the length of the projection of the whole formed by the four tuyere groups in the first direction is smaller than the sum of the lengths of the four tuyere groups in the first direction, the length of the oven in the first direction is smaller than the sum of the lengths of the four tuyere groups in the first direction, each tuyere group is used for drying the pole piece with the length equal to the length of the air nozzle group in the first direction, namely the oven can be used for drying the pole piece with the length longer than the length of the air nozzle group, and the length of the oven in the first direction can be effectively reduced under the condition that the drying efficiency is unchanged, and the occupied area of the oven is effectively reduced.

Meanwhile, the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group which are distributed in the direction perpendicular to the first direction fully utilize the longitudinal space of the oven, and the space utilization rate of the oven is improved.

In addition, the length of the oven is shortened, the surface area of the oven occupied by the unit length of the pole piece is reduced, and the heat dissipation area of the oven is effectively reduced, so that the heat loss of the oven is effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic diagram of a partial structure of an oven according to an embodiment of the present invention;

FIG. 2 is a schematic view of another partial structure of an oven according to an embodiment of the present invention;

FIG. 3 is a schematic view of another partial structure of an oven according to an embodiment of the present invention;

FIG. 4 is a schematic view of another partial structure of an oven according to an embodiment of the present invention;

FIG. 5 is a schematic view of another partial structure of an oven according to an embodiment of the present invention;

FIG. 6 is a schematic view of another partial structure of an oven according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an oven according to an embodiment of the present invention;

wherein:

11. first tuyere 12, second tuyere 13, third tuyere

14. Fourth tuyere 15, supporting roller 21 and first carrier roller

22. Second carrier roller 23, third carrier roller 24 and fourth carrier roller

31. First reversing roller 32, second reversing roller 33, third reversing roller

34. Fourth reversing roller 35, fifth reversing roller 41, first reversing roller

42. Second direction-changing roller 43, third direction-changing roller 51, upper case

52. Lower housing 6, pole piece 71, first coating assembly

72. A second coating component 8 and a carrier roller.

Detailed Description

The embodiment of the invention provides an oven, a drying method, a coating machine and a coating system, which are used for solving the technical problems that an oven for drying a coated pole piece in the prior art adopts a linear heating baking scheme, so that the oven is overlong and occupies a large area.

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only some embodiments of the present invention, not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.

The existing oven for drying the wet coated pole piece generally adopts a scheme that the front and back sides of the single-sided wet coated pole piece are respectively provided with a tuyere group for carrying out linear heating and baking, the length of the single-sided wet coating is only half of the length of the corresponding front and back tuyere groups, the length of the single-sided wet coated pole piece which can be accommodated by the oven is equal to that of the oven, the length of the oven is overlong, the overall length of a coating machine is overlong, the occupied area is larger, the surface area of the oven occupied by the unit length of the pole piece is larger, the heat dissipation area is larger, and the heat loss is larger.

Example 1

Referring to fig. 1-7, an oven according to an embodiment of the present invention includes:

The first air nozzle group, the second air nozzle group, the third air nozzle group, the fourth air nozzle group and N carrier roller groups are arranged, wherein N is more than or equal to 2 and less than or equal to 4; the first air nozzle group comprises A first air nozzles 11 positioned on a first plane, and the A first air nozzles 11 are arranged at intervals along a first direction; the second air nozzle group comprises B second air nozzles 12 positioned on a second plane, and the B second air nozzles 12 are arranged at intervals along the first direction; the third air nozzle group comprises C third air nozzles 13 positioned on a third plane, and the C third air nozzles 13 are arranged at intervals along the first direction; the fourth air nozzle group comprises D fourth air nozzles 14 positioned on a fourth plane, and the D fourth air nozzles 14 are arranged at intervals along the first direction; the first plane, the second plane, the third plane and the fourth plane are parallel to each other, and A, B, C and D are integers greater than or equal to 1; the length of the projections of the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction is smaller than the sum of the lengths of the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction; the N carrier roller sets are used for supporting the pole piece 6 to flow through the first tuyere set, the second tuyere set, the third tuyere set and the fourth tuyere set in sequence, when the pole piece 6 passes through the first tuyere set, the first surface to be dried of the pole piece 6 faces the first tuyere 11, when the pole piece 6 passes through the second tuyere set, the first surface to be dried faces the second tuyere 12, when the pole piece 6 passes through the third tuyere set, the second surface to be dried of the pole piece 6 faces the third tuyere 13, and when the pole piece 6 passes through the fourth tuyere set, the second surface to be dried faces the fourth tuyere 14.

It should be noted that: the shape of the first air nozzle 11, the second air nozzle 12, the third air nozzle 13, and the fourth air nozzle 14 as windows through which hot air is introduced is not particularly limited, and the number of the first air nozzle 11, the second air nozzle 12, the third air nozzle 13, and the fourth air nozzle 14 may be the same or different, and the number of the first air nozzle 11, the second air nozzle 12, the third air nozzle 13, and the fourth air nozzle 14 may be set as actually required.

The first direction is parallel to the direction of flow of the pole pieces 6 over the idler sets.

There is a space between the first tuyere 11 and the second tuyere 12, a space between the second tuyere 12 and the third tuyere 13, and a space between the third tuyere 13 and the fourth tuyere 14, i.e. the first plane, the second plane, the third plane and the fourth plane are parallel.

The length of the projection of the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction is smaller than the sum of the lengths of the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction, namely the sum of the lengths of the first air nozzle group, the second air nozzle group and the fourth air nozzle group in the first direction is larger than the projection length of the whole formed by the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction; the smaller the projection length of the whole formed by the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group in the first direction is, the smaller the length of the oven in the first direction is.

The first surface to be dried and the second surface to be dried are two opposite surfaces of the pole piece 6 coated with wet slurry.

Working principle of oven: the carrier roller group provides support for the pole piece 6, the pole piece 6 flows from one end of the first air nozzle group in the first direction to the other end of the first air nozzle group in the first direction in a state that the first surface to be dried faces the first air nozzle 11, and in the flowing process, the plurality of first air nozzles 11 forming the first air nozzle group continuously blow hot air to dry the wet slurry on the first surface to be dried for the first time; when the pole piece 6 flows to the tail end of the first tuyere set, the carrier roller set regulates the flow direction of the pole piece 6, the pole piece 6 enters the interval between the second tuyere set and the carrier roller set in a state that the first surface to be dried faces the second tuyere 12, the carrier roller set continuously provides support for the pole piece 6, the pole piece 6 flows from one end of the second tuyere set in the first direction to the other end of the second tuyere set in the first direction in a state that the first surface to be dried faces the second tuyere 12, and in the flowing process, the plurality of second tuyeres 12 forming the second tuyere set continuously blow hot air to dry wet slurry on the first surface to be dried for the second time; when the pole piece 6 flows to the tail end of the second tuyere set, the carrier roller set regulates the flow direction of the pole piece 6, the pole piece 6 enters the interval between the third tuyere set and the carrier roller set in a state that the second surface to be dried faces the third tuyere 13, the carrier roller set continuously provides support for the pole piece 6, the pole piece 6 flows from one end of the third tuyere set in the first direction to the other end of the third tuyere set in the first direction in a state that the second surface to be dried faces the third tuyere 13, and in the flowing process, the plurality of third tuyeres 13 forming the third tuyere set continuously blow hot air to dry wet slurry on the second surface to be dried for the first time; when the pole piece 6 flows to the tail end of the third air nozzle group, the carrier roller group regulates and controls the flow direction of the pole piece 6, the pole piece 6 enters the interval between the fourth air nozzle group and the carrier roller group in a state that the second surface to be dried faces the fourth air nozzle 14, the carrier roller group continuously provides support for the pole piece 6, the pole piece 6 flows from one end of the fourth air nozzle group in the first direction to the other end of the fourth air nozzle group in the first direction in a state that the second surface to be dried faces the fourth air nozzle 14, and in the flowing process, the plurality of fourth air nozzles 14 forming the fourth air nozzle group continuously blow hot air to dry wet slurry on the second surface to be dried for the second time.

The beneficial effects of this embodiment include:

(1) the first surface to be dried of the pole piece is dried sequentially through the first tuyere group and the second tuyere group, the second surface to be dried of the pole piece is dried sequentially through the third tuyere group and the fourth tuyere group, and therefore the length of the projection of the whole formed by the four tuyere groups in the first direction is smaller than the sum of the lengths of the four tuyere groups in the first direction, the length of the oven in the first direction is smaller than the sum of the lengths of the four tuyere groups in the first direction, each tuyere group is used for drying the pole piece with the length equal to the length of the air nozzle group in the first direction, namely the oven can be used for drying the pole piece with the length longer than the length of the air nozzle group, and the length of the oven in the first direction can be effectively reduced under the condition that the drying efficiency is unchanged, and the occupied area of the oven is effectively reduced.

(2) The first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group which are aligned and arranged in the direction perpendicular to the first direction fully utilize the longitudinal space of the oven, and the space utilization rate of the oven is improved.

(3) The length of the oven is reduced, the surface area of the oven occupied by the unit length of the pole piece is reduced, and the heat dissipation area of the oven is effectively reduced, so that the energy consumption of the oven is effectively reduced.

(4) The pole piece outlet and the pole piece inlet of the oven can be arranged on the same side, so that the configuration of operators is more flexible while the production efficiency is met.

(5) The size of the oven is reduced, the operation is more flexible, the installation is more convenient, and the requirements on a factory building are reduced.

One preferred arrangement of the first tuyere set, the second tuyere set, the third tuyere set and the fourth tuyere set is as follows: the first tuyere group, the second tuyere group, the third tuyere group and the fourth tuyere group are aligned in the direction perpendicular to the first direction, that is, the lengths of the first tuyere group, the second tuyere group, the third tuyere group and the fourth tuyere group in the first direction are equal, and the projections in the directions of the first direction are overlapped, so that each tuyere group dries the pole piece with the length equal to the length of the pole piece in the first direction, the length of the dried pole piece is twice the length of the first tuyere group in the first direction, that is, the drying oven can dry the pole piece 6 with the length twice as long as the pole piece. The following description is made based on this arrangement.

First preferred combination mode of N bearing roller groups, first tuyere group, second tuyere group, third tuyere group and fourth tuyere group: the second plane and the third plane are positioned between the first plane and the fourth plane, and the second plane is close to the first plane; the wind directions of the first wind nozzle 11 and the second wind nozzle 12 are opposite, and the wind directions of the third wind nozzle 13 and the fourth wind nozzle 14 are opposite; the N carrier roller groups comprise a first carrier roller group and a second carrier roller group; the first carrier roller set is arranged between the first plane and the second plane, and the second carrier roller set is arranged between the third plane and the fourth plane.

Exemplary: as shown in fig. 1, the first air nozzle group, the first carrier roller group, the second air nozzle group, the fourth air nozzle group, the second carrier roller group and the third air nozzle group are sequentially arranged from top to bottom; the first tuyeres 11 forming the first tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the first tuyeres 11 is downward; the plurality of second tuyeres 12 forming the second tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the second tuyeres 12 is upward; the plurality of third tuyeres 13 forming the third tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the third tuyeres 13 is upward; the plurality of fourth tuyeres 14 constituting the fourth tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the fourth tuyeres 14 is downward.

One preferred embodiment of the first idler set and the second idler set: the first carrier roller group comprises a first reversing roller 31 and a first carrier rollers 21, the axes of which are positioned on a fifth plane, a first carrier rollers 21 and the first reversing roller 31 are sequentially arranged in parallel at intervals, the axes of the first carrier rollers 21 are perpendicular to a first direction, and a is an integer greater than 1; the second carrier roller group comprises a second reversing roller 32 with an axle center in a sixth plane and b second carrier rollers 22, b second carrier rollers 22 and second reversing rollers 32 are sequentially arranged in parallel at intervals, the axle center of the second carrier roller 22 is perpendicular to the first direction, and b is an integer larger than 1; the first plane, the fifth plane and the sixth plane are parallel to each other; the first reversing roller 31 is used for adjusting the flow direction of the pole piece 6 so as to change the first surface to be dried of the pole piece 6 from facing the first air nozzle 11 to facing the second air nozzle 12; the second reversing roller 32 is used for adjusting the flow direction of the pole piece 6 so as to change the second surface to be dried of the pole piece 6 from facing the third tuyere 13 to facing the fourth tuyere 14.

Exemplary: as shown in fig. 1, a plurality of first carrier rollers 21 and a first reversing roller 31 forming a first carrier roller group are sequentially arranged at intervals from left to right, and the first carrier rollers 21 and the first reversing roller 31 with the same shape extend along the front-rear direction; one second reversing roller 32 and a plurality of second reversing rollers 22 forming the second roller group are sequentially arranged at intervals from left to right, and the second rollers 22 and the second reversing rollers 32 with the same shape extend along the front-rear direction; the first carrier roller 21 and the second carrier roller 22 have the same shape, and a third reversing roller 33 is further provided on the left side of the leftmost second carrier roller 22, and the pole piece 6 flowing out of the second coating assembly 72 is guided to the second carrier roller 22 by the third reversing roller 33.

Further optimized: the first carrier roller set is also provided with a first turning roller 41 for guiding the pole piece 6 to flow from the first carrier roller 21 to the second carrier roller 22; the second roller set is further provided with a second turning roller 42 and a third turning roller 43 for guiding the pole piece 6 out of the space between the second roller set and the fourth tuyere set.

Exemplary: as shown in fig. 1, the first turning roller 41 is located at the left lower side of the leftmost first carrier roller 21, and the longitudinal interval between the upper peripheral surface thereof and the lower peripheral surface of the leftmost first carrier roller 21 is equal to the thickness of the pole piece 6; the second turning roller 42 is positioned at the upper left of the leftmost second carrier roller 22, and the longitudinal interval between the lower peripheral surface and the upper peripheral surface of the rightmost second carrier roller 22 is equal to the thickness of the pole piece 6; the third direction-changing roller 43 is arranged above the second direction-changing roller 42 at intervals, and the axle center of the second direction-changing roller 42 are in the same vertical plane; the third turning roller 43 is located between the second tuyere group and the fourth tuyere group, and the first turning roller 41 is located at the upper left of the third turning roller 43; the first direction-changing roller 41, the second direction-changing roller 42, and the third direction-changing roller 43 all extend in the front-rear direction and have the same shape as the first carrier roller 21, and in addition, in order to guide the air finally flowing out from the right side of the oven, a plurality of carrier rollers 8 extending front-rear are further provided at intervals between the second tuyere group and the fourth tuyere group, and the plurality of carrier rollers 8 are arranged in an up-down alternating manner from left to right. In this way, the pole piece 6 is coated by the first coating component 71 to form a first surface to be dried, and enters the interval between the first air nozzle 11 and the first carrier rollers 21 from the left end in a state that the first surface to be dried faces upwards, and keeps the first surface to be dried to flow rightwards under the support of the upper peripheral surfaces of the plurality of first carrier rollers 21, and the first surface to be dried continuously bears the hot air blown by the first air nozzle 11; when flowing to the first reversing roller 31 positioned at the rightmost end, the first reversing roller 31 turns downwards and turns leftwards under the guidance of the first reversing roller 31, the first to-be-dried surface enters the interval between the second tuyere group and the first carrier roller 21 from the right end in a state that the first to-be-dried surface faces downwards, and is supported by the lower peripheral surfaces of the plurality of first carrier rollers 21, the first to-be-dried surface keeps flowing leftwards in a state that the first to-be-dried surface faces downwards, and the first to-be-dried surface continuously bears hot air blown out by the second tuyere 12; when flowing to the first turning roller 41, under the guidance of the first turning roller 41, downwards turns and downwards flows, enters the second coating component 72 to be coated, forms a second surface to be dried, flows out of the second coating component 72 and then downwards turns and rightwards flows under the guidance of the third turning roller 33, enters the interval between the third air nozzle 13 and the second carrier roller 22 from the left end in a state that the second surface to be dried is downwards, keeps the state that the second surface to be dried downwards flows rightwards under the support of the lower peripheral surfaces of the plurality of second carrier rollers 22, and continuously bears hot air blown out by the third air nozzle 13 in the middle of the second surface to be dried; when the second reversing roller 32 flowing to the rightmost end turns upward and then turns left under the guidance of the second reversing roller 32, enters the interval between the fourth tuyere 14 and the second carrier roller 22 from the right end in a state where the second surface to be dried is upward, is supported by the upper peripheral surfaces of the plurality of second carrier rollers 22, keeps the state where the second surface to be dried is upward flowing leftward, continuously receives the hot air blown out from the fourth tuyere 14 on the way, turns upward under the guidance of the second reversing roller 42 when flowing to the second reversing roller 42, turns right under the guidance of the third reversing roller 42 when flowing to the third reversing roller 43, then flows rightward under the guidance of the third reversing roller, and finally flows out from the right end of the interval between the second tuyere group and the third tuyere group.

One preferred arrangement of the first tuyere set, the second tuyere set, the third tuyere set, the fourth tuyere set, the first carrier roller set and the second carrier roller set is as follows: the first air nozzles 11 and the second air nozzles 12 are in one-to-one correspondence, and the third air nozzles 13 and the fourth air nozzles 14 are in one-to-one correspondence; the first carrier roller 21 corresponds to the first tuyere 11, and the second carrier roller 22 corresponds to the third tuyere 13. Namely, the number of the first air nozzles 11, the second air nozzles 12 and the first carrier rollers 21 is the same, the wind direction of each first air nozzle 11 is collinear with the wind direction of one second air nozzle 12, and the straight line of the wind direction of each first air nozzle 11 is perpendicularly intersected with the axle center of one first carrier roller 21; the number of the third air nozzles 13, the fourth air nozzles 14 and the second carrier rollers 22 is the same, the wind direction of each third air nozzle 13 is collinear with the wind direction of one fourth air nozzle 14, and the straight line of the wind direction of each third air nozzle 13 is perpendicular to the axis of one second carrier roller 22. Hereinafter, similar preferred arrangements are the same as those described above, and will not be described in detail.

Another preferred arrangement of the first tuyere set, the second tuyere set, the third tuyere set, the fourth tuyere set, the first carrier roller set and the second carrier roller set is as follows: as shown in fig. 1, the first air nozzles 11 and the second air nozzles 12 are in one-to-one correspondence, and the third air nozzles 13 and the fourth air nozzles 14 are in one-to-one correspondence; the first carrier roller 21 corresponds to the interval between the adjacent two first tuyeres 11, and the second carrier roller 22 corresponds to the interval between the adjacent two third tuyeres 13. That is, the number of the first air nozzles 11 and the second air nozzles 12 are the same, and the wind direction of each first air nozzle 11 is collinear with the wind direction of one second air nozzle 12; the number of third tuyeres 13 and fourth tuyeres 14 is the same, and the wind direction of each third tuyere 13 is collinear with the wind direction of one fourth tuyere 14. Hereinafter, similar preferred arrangements are the same as those described above, and will not be described in detail.

N carrier roller groups, first tuyere group, second tuyere group, third tuyere group and fourth tuyere group's second preferred combination mode: the first plane and the second plane are positioned between the third plane and the fourth plane, and the first plane is close to the fourth plane; the wind directions of the first wind nozzle 11 and the second wind nozzle 12 are opposite, and the wind directions of the third wind nozzle 13 and the fourth wind nozzle 14 are opposite; the N carrier roller groups comprise a first carrier roller group, a second carrier roller group and a third carrier roller group; the first carrier roller set is arranged between the first plane and the second plane, the second carrier roller set is arranged between the second plane and the third plane, and the third carrier roller set is arranged between the first plane and the fourth plane.

Exemplary: as shown in fig. 2, the fourth tuyere set, the third carrier roller set, the first tuyere set, the first carrier roller set, the second tuyere set, the second carrier roller set and the third tuyere set are sequentially arranged at intervals from top to bottom; the first tuyeres 11 forming the first tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the first tuyeres 11 is downward; the plurality of second tuyeres 12 forming the second tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the second tuyeres 12 is upward; the plurality of third tuyeres 13 forming the third tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the third tuyeres 13 is upward; the plurality of fourth tuyeres 14 constituting the fourth tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the fourth tuyeres 14 is downward.

The third preferred combination mode of the N carrier roller groups, the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group comprises the following steps: the second plane and the third plane are positioned between the first plane and the fourth plane, and the second plane is close to the first plane; the wind directions of the first wind nozzle 11 and the second wind nozzle 12 are opposite, and the wind directions of the third wind nozzle 13 and the fourth wind nozzle 14 are opposite; the N carrier roller groups comprise a first carrier roller group, a second carrier roller group and a third carrier roller group; the first carrier roller set is arranged between the first plane and the second plane, the second carrier roller set is arranged between the second plane and the third plane, and the third carrier roller set is arranged on one side of the fourth plane far away from the third plane.

Exemplary: as shown in fig. 3, the first air nozzle group, the first carrier roller group, the second air nozzle group, the second carrier roller group, the third air nozzle group, the fourth air nozzle group and the third carrier roller group are sequentially arranged at intervals from top to bottom; the first tuyeres 11 forming the first tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the first tuyeres 11 is downward; the plurality of second tuyeres 12 forming the second tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the second tuyeres 12 is upward; the plurality of third tuyeres 13 forming the third tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the third tuyeres 13 is upward; the plurality of fourth tuyeres 14 constituting the fourth tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the fourth tuyeres 14 is downward.

One preferred embodiment of the first idler set, the second idler set, and the third idler set: the first carrier roller group comprises a first reversing roller 31 and a first carrier rollers 21 with the axle center in a fifth plane, the a first carrier rollers 21 and the first reversing roller 31 are sequentially arranged in parallel at intervals, and the axle center of the first carrier roller 21 is perpendicular to a first direction a and is an integer larger than 1; the second carrier roller group comprises b second carrier rollers 22 with axes in a sixth plane, the b second carrier rollers 22 are sequentially arranged in parallel at intervals, the axes of the second carrier rollers 22 are perpendicular to the first direction, and b is an integer greater than 1; the third carrier roller group comprises c third carrier rollers 23 with axes in a seventh plane, the c third carrier rollers 23 are sequentially arranged in parallel at intervals, the axes of the third carrier rollers 23 are perpendicular to the first direction, and c is an integer greater than 1; the first reversing roller 31 is used for adjusting the flow direction of the pole piece 6; the first plane, the fifth plane, the sixth plane, and the seventh plane are parallel to each other.

Exemplary: the first carrier rollers 21 and the first reversing roller 31 are sequentially arranged at intervals from left to right; the second carrier rollers 22 are sequentially arranged at intervals from left to right; the third carrier rollers 23 are sequentially arranged at intervals from left to right; the first idler 21, the second idler 22, the third idler 23, and the first reversing roller 31 are identical in shape and all extend in the front-rear direction.

As shown in fig. 2, in the second preferred combination, the first carrier roller group is further provided with a first direction-changing roller 41 disposed at a lower left side of the leftmost first carrier roller 21 at intervals; the second carrier roller group is also provided with a second reversing roller 32 and a third reversing roller 33, the second reversing roller 32 is arranged at the left side of the leftmost second carrier roller 22 at intervals, the axle center is in the same vertical plane with the axle center of the first reversing roller 41, and the third reversing roller 33 is arranged at the right side of the rightmost second carrier roller 22 at intervals; the third carrier roller group is also provided with a fourth reversing roller 34, the fourth reversing roller 34 is arranged on the right side of the rightmost third carrier roller 23 at intervals, and the axle center of the third reversing roller 33 are in the same vertical plane. In the preferred combination mode, the design principle of the reversing roller and the direction-changing roller is the same as that of the first preferred combination mode, and is not described in detail herein, meanwhile, the flow path of the pole piece 6 can refer to the corresponding figure, and is not described in detail herein, and the following is the same.

As shown in fig. 3, in a third preferred combination manner, the first carrier roller set is further provided with a first direction-changing roller 41, and the first direction-changing roller 41 is arranged at a lower left side of the leftmost first carrier roller 21 at intervals; the second carrier roller set is also provided with a second reversing roller 32 and a second reversing roller 42, the second reversing roller 32 is arranged at the left side of the leftmost second carrier roller 22 at intervals, and the second reversing roller 42 is arranged at the right lower side of the rightmost second carrier roller 22 at intervals; the third carrier roller group is also provided with a third turning roller 43, and the third turning roller 43 is arranged above and to the right of the third carrier roller 23 at intervals.

One preferred arrangement of the first tuyere set, the second tuyere set, the third tuyere set, the fourth tuyere set, the first idler set, the second idler set and the third idler set is as follows: the first air nozzles 11 and the second air nozzles 12 are in one-to-one correspondence, and the third air nozzles 13 and the fourth air nozzles 14 are in one-to-one correspondence; the first carrier roller 21 corresponds to the first tuyere 11, the second carrier roller 22 corresponds to the third tuyere 13, and the third carrier roller 23 corresponds to the fourth tuyere 14. This preferred arrangement may be used in combination with the second or third preferred combinations.

Another preferred arrangement of the first tuyere set, the second tuyere set, the third tuyere set, the fourth tuyere set, the first idler set, the second idler set and the third idler set is as follows: the first air nozzles 11 and the second air nozzles 12 are in one-to-one correspondence, and the third air nozzles 13 and the fourth air nozzles 14 are in one-to-one correspondence; the first carrier roller 21 corresponds to the interval between the adjacent two first tuyeres 11, the second carrier roller 22 corresponds to the interval between the adjacent two third tuyeres 13, and the third carrier roller 23 corresponds to the interval between the adjacent two fourth tuyeres 14. This preferred arrangement may be used in combination with the second or third preferred combinations.

Alternative to the second and third preferred combinations: the first plane, the second plane, the third plane and the fourth plane are replaced by a fourth plane, a third plane, a second plane and a first plane respectively; the first tuyere 11, the second tuyere 12, the third tuyere 13 and the fourth tuyere 14 are replaced with a fourth tuyere 14, a third tuyere 13, a second tuyere 12 and the first tuyere 11, respectively; the first carrier roller set and the third carrier roller set are replaced by the third carrier roller set and the first carrier roller set respectively. Namely, under the condition that the structure of the oven is unchanged, the positions of the first coating component 71 and the second coating component 72 are adaptively adjusted, so that the pole piece 6 flows reversely in the same flow path, the pole piece outlet of the oven becomes a pole piece inlet, and the pole piece inlet becomes a pole piece outlet, for example: in a third preferred combination, the pole piece 6 enters the oven from the upper left after being coated by the first coating component 71, and flows out of the oven from the lower left, and after replacement, the pole piece 6 enters the oven from the lower left after being coated by the first coating component 71, and flows out of the oven from the upper left.

The fourth preferred combination mode of the N carrier roller groups, the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group is as follows: the first plane and the second plane are positioned between the third plane and the fourth plane, and the first plane is close to the fourth plane; the wind directions of the first wind nozzle 11 and the second wind nozzle 12 are opposite, and the wind directions of the third wind nozzle 13 and the fourth wind nozzle 14 are opposite; the N carrier roller groups comprise a first carrier roller group, a second carrier roller group, a third carrier roller group and a fourth carrier roller group; the first carrier roller set and the second carrier roller set are arranged between the first plane and the second plane, and the first carrier roller set is close to the first plane; the third carrier roller set is arranged between the second plane and the third plane, and the fourth carrier roller set is arranged between the first plane and the fourth plane.

Exemplary: as shown in fig. 4, the fourth tuyere set, the fourth carrier roller set, the first tuyere set, the first carrier roller set, the second tuyere set, the third carrier roller set and the third tuyere set are sequentially arranged at intervals from top to bottom; the first tuyeres 11 forming the first tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the first tuyeres 11 is downward; the plurality of second tuyeres 12 forming the second tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the second tuyeres 12 is upward; the plurality of third tuyeres 13 forming the third tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the third tuyeres 13 is upward; the plurality of fourth tuyeres 14 constituting the fourth tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the fourth tuyeres 14 is downward.

Fifth preferred combination mode of N idler groups, first tuyere group, second tuyere group, third tuyere group and fourth tuyere group: the second plane and the third plane are positioned between the first plane and the fourth plane, and the second plane is close to the first plane; the wind directions of the first wind nozzle 11 and the second wind nozzle 12 are opposite, and the wind directions of the third wind nozzle 13 and the fourth wind nozzle 14 are opposite; the N carrier roller groups comprise a first carrier roller group, a second carrier roller group, a third carrier roller group and a fourth carrier roller group; the first carrier roller set and the second carrier roller set are arranged between the first plane and the second plane, and the first carrier roller set is close to the first plane; the third carrier roller set is arranged between the second plane and the third plane; the fourth plane is arranged between the fourth carrier roller group and the third plane.

Exemplary: as shown in fig. 5, the first air nozzle group, the first carrier roller group, the second air nozzle group, the third carrier roller group, the third air nozzle group, the fourth air nozzle group and the fourth carrier roller group are sequentially arranged at intervals from top to bottom; the first tuyeres 11 forming the first tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the first tuyeres 11 is downward; the plurality of second tuyeres 12 forming the second tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the second tuyeres 12 is upward; the plurality of third tuyeres 13 forming the third tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the third tuyeres 13 is upward; the plurality of fourth tuyeres 14 constituting the fourth tuyere group are sequentially arranged at intervals from left to right, and the wind direction of the fourth tuyeres 14 is downward.

One preferred embodiment of the first idler set, the second idler set, the third idler set, and the fourth idler set: the first carrier roller group comprises a first carrier rollers 21 with an axis in a fifth plane, the a first carrier rollers 21 are sequentially arranged in parallel at intervals, and the axis of the first carrier rollers 21 is perpendicular to the first direction; the second carrier roller group comprises b second carrier rollers 22 with axes in a sixth plane, the b second carrier rollers 22 are sequentially arranged in parallel at intervals, and the axes of the second carrier rollers 22 are perpendicular to the first direction; the third carrier roller group comprises c third carrier rollers 23 with axes in a seventh plane, the c third carrier rollers 23 are sequentially arranged in parallel at intervals, and the axes of the third carrier rollers 23 are perpendicular to the first direction; the fourth carrier roller group comprises d fourth carrier rollers 24 with axes in an eighth plane, the d fourth carrier rollers 24 are sequentially arranged in parallel at intervals, and the axes of the fourth carrier rollers 24 are perpendicular to the first direction; a. b, c and d are integers greater than 1; the first plane, the fifth plane, the sixth plane, the seventh plane, and the eighth plane are parallel to each other.

Exemplary: the first carrier rollers 21 are sequentially arranged at intervals from left to right; the second carrier rollers 22 are sequentially arranged at intervals from left to right; the third carrier rollers 23 are sequentially arranged at intervals from left to right; the fourth carrier rollers 24 are sequentially arranged at intervals from left to right; the first idler 21, the second idler 22, the third idler 23, and the fourth idler 24 are identical in shape and all extend in the front-rear direction.

As shown in fig. 4, in a fourth preferred combination, the first idler set is further provided with a first reversing roller 31, and the first reversing roller 31 is disposed at a right side of the rightmost first idler 21 at intervals; the second carrier roller set is also provided with a second reversing roller 32 and a first reversing roller 41, the first reversing roller 31 is arranged on the right side of the rightmost second carrier roller 22 at intervals, and the first reversing roller 41 is arranged on the left lower side of the leftmost second carrier roller 22 at intervals; the third carrier roller group is also provided with a third reversing roller 33 and a fourth reversing roller 34, the third reversing roller 33 is arranged at the left side of the leftmost third carrier roller 23 at intervals, the axle center is in the same vertical plane with the axle center of the first reversing roller 41, and the fourth reversing roller 34 is arranged at the right side of the rightmost third carrier roller 23 at intervals; the fourth carrier roller set is also provided with a fifth reversing roller 35, the fifth reversing roller 35 is arranged on the right side of the rightmost fourth carrier roller 24 at intervals, and the axle center of the fourth reversing roller 34 are in the same vertical plane.

As shown in fig. 5, in a fifth preferred combination, the first idler set is further provided with a first reversing roller 31, and the first reversing roller 31 is disposed at a right side of the first idler 21 on the rightmost side at intervals; the second carrier roller set is also provided with a second reversing roller 32 and a first reversing roller 41, the second reversing roller 32 is arranged on the right side of the rightmost second carrier roller 22 at intervals, the axle center and the axle center of the first reversing roller 31 are positioned on the same vertical plane, and the first reversing roller 41 is arranged on the left lower side of the leftmost second carrier roller 22 at intervals; the third carrier roller group is also provided with a third reversing roller 33 and a second reversing roller 42, the third reversing roller 33 is arranged at the left side of the leftmost third carrier roller 23 at intervals, and the second reversing roller 42 is arranged at the right lower side of the rightmost third carrier roller 23 at intervals; the fourth carrier roller set is also provided with a third turning roller 43, the third turning roller 43 is arranged at the upper right of the fourth carrier roller 24 at intervals, and the axle center of the second turning roller 42 are in the same vertical plane.

Optionally, if the span between the reversing roller and the turning roller is too large, a roller passing through can be additionally arranged between the reversing roller and the turning roller to support the pole piece 6, and similarly, if the span between the two turning rollers is too large, a roller passing through can be additionally arranged between the two turning rollers to support the pole piece 6; the axes of the additionally arranged passing roller and the turning roller can be coplanar or not, when the axes are coplanar, the flow path of the pole piece is unchanged, and when the axes are not coplanar, the flow path of the pole piece 6 is increased, so that the pole piece capacity of the oven can be increased.

One preferred arrangement mode of the first carrier roller group, the second carrier roller group, the third carrier roller group, the fourth carrier roller group, the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group is as follows: the first air nozzles 11 and the second air nozzles 12 are in one-to-one correspondence, and the third air nozzles 13 and the fourth air nozzles 14 are in one-to-one correspondence; the first carrier roller 21 corresponds to the first tuyere 11, the second carrier roller 22 corresponds to the second tuyere 12, the third carrier roller 23 corresponds to the third tuyere 13, and the fourth carrier roller 24 corresponds to the fourth tuyere 14. This preferred arrangement may be combined with the fourth or fifth preferred combinations.

Another preferred arrangement mode of the first carrier roller group, the second carrier roller group, the third carrier roller group, the fourth carrier roller group, the first air nozzle group, the second air nozzle group, the third air nozzle group and the fourth air nozzle group is as follows: the first air nozzles 11 and the second air nozzles 12 are in one-to-one correspondence, and the third air nozzles 13 and the fourth air nozzles 14 are in one-to-one correspondence; the first carrier roller 21 corresponds to the interval between the adjacent two first tuyeres 11, the second carrier roller 22 corresponds to the interval between the adjacent two second tuyeres 12, the third carrier roller 23 corresponds to the interval between the adjacent two third tuyeres 13, and the fourth carrier roller 24 corresponds to the interval between the adjacent two fourth tuyeres 14. This preferred arrangement may be combined with the fourth to fifth preferred combinations.

Alternative to the fourth and fifth preferred combinations: the first plane, the second plane, the third plane and the fourth plane are replaced by a fourth plane, a third plane, a second plane and a first plane respectively; the first tuyere 11, the second tuyere 12, the third tuyere 13 and the fourth tuyere 14 are replaced with a fourth tuyere 14, a third tuyere 13, a second tuyere 12 and the first tuyere 11, respectively; the first idler set, the second idler set, the third idler set, and the fourth idler set are replaced with a fourth idler 24, a third idler 23, the second idler set, and the first idler set, respectively. Namely, under the condition that the structure part of the oven is unchanged, the pole piece 6 flows reversely in the same flow path, the pole piece outlet of the oven is changed into a pole piece inlet, and the pole piece inlet is changed into a pole piece outlet, for example: in a fifth preferred combination, the pole piece 6 flows into the oven from the upper left after being coated by the first coating assembly 71, flows out of the oven from the lower left, and after replacement, the pole piece 6 flows into the oven from the lower left after being coated by the first coating assembly 71, and flows out of the oven from the upper left.

A preferred embodiment of the tuyere: referring to fig. 6, a supporting roller 15 with an axis perpendicular to the first direction is disposed in each of the first air nozzle 11, the second air nozzle 12, the third air nozzle 13 and the fourth air nozzle 14. Through all setting up a backing roll 15 in first tuyere 11 and second tuyere 12 in order to avoid pole piece 6 to take place the laminating with first tuyere 11 or second tuyere 12 in the flow in-process, ensure hot-blast normal blow out, simultaneously, when the interval between bearing roller and two adjacent tuyeres corresponds, the accessible drives first tuyere group, second tuyere group, third tuyere group and/or fourth tuyere group and reciprocates, let the tuyere insert the interval between two adjacent bearing rollers, let pole piece 6 with serpentine flow to increase the pole piece 6 length that the oven can hold, if: in a fifth preferred combination mode, the first carrier rollers 21 correspond to the intervals between the two adjacent first air nozzles 11, the first air nozzle 11 enters the interval between the two adjacent first carrier rollers 21 by driving the first air nozzle groups to move downwards, so that the pole piece 6 bends downwards under the driving of the plurality of supporting rollers 15, the original straight flow is changed into the serpentine flow, the flow path of the pole piece 6 is prolonged, and the length of the pole piece 6 which can be accommodated in the oven is increased.

Specific: the oven is also provided with a circulating fan, a heating bag, a circulating air pipe, an air return port, a fresh air port and an air outlet; the circulating fan and the heating bag are arranged in the circulating air pipe; the return air inlet is arranged at the input end of the circulating air pipe; the air outlet is close to the air return port; the new air port is arranged between the air outlet and the circulating fan; the output end of the circulating fan is connected with the input end of the heating bag, and the output end of the circulating air pipe is connected with the first air nozzle 11, the second air nozzle 12, the third air nozzle 13 and the fourth air nozzle 14. The circulating air pipe can circulate air through the air return opening, the fresh air opening and the air outlet, the air is heated into hot air through the heating bag, the hot air flows to the first air nozzle 11, the second air nozzle 12, the third air nozzle 13 and the fourth air nozzle 14 through the circulation fan, and the hot air flows out from the first air nozzle 11, the second air nozzle 12, the third air nozzle 13 and the fourth air nozzle 14 to act on the pole piece 6, so that the solvent of the pole piece 6 is taken away.

Specific: the oven is also provided with a shell for accommodating the tuyere set and the carrier roller set, and a closed space is provided through the shell, so that heat is prevented from being outwards diffused, heat loss is reduced, and drying efficiency is improved. As shown in fig. 7, the oven is provided with an upper housing 51 and a lower housing 52, a first tuyere set, a second tuyere set, and a first carrier roller set are provided in the upper housing 51, and a third tuyere set, a fourth tuyere set, a second carrier roller set, and a third carrier roller set are provided in the lower housing 52.

Preferably: the oven is also provided with a rectifying unit for moving the pole piece 6 back to the correct flow path. The pole piece 6 takes place to shift easily when taking place to turn, the pole piece 6 if take place to shift, can't align with the tuyere, thereby influence drying efficiency and stoving effect, in order to avoid this condition to take place, all set up a unit of rectifying in the position that pole piece 6 needs to turn, the unit of rectifying is provided with photoelectric sensor, a reflection section of thick bamboo and the executor of rectifying, be provided with the speculum in the reflection section of thick bamboo, the casing of oven is worn to locate by the reflection section of thick bamboo, its one end is located the casing, photoelectric sensor locates outside the casing, the executor of rectifying locates in the casing, the detection light that photoelectric sensor sent gets into in the casing after the speculum reflection in the reflection section of thick bamboo, thereby realize the skew detection to pole piece 610, detect the pole piece 6 and take place to shift for rectifying the executor, after rectifying the executor received the signal of rectifying, move pole piece 6 back to the exact flow path.

Example two

The drying method provided by the embodiment of the invention comprises the following steps:

10. the pole piece 6 is driven by the carrier roller group to flow in a state that a first surface to be dried faces the first tuyere 11;

Specifically, the upper peripheral surfaces of the plurality of first carrier rollers 21 support the pole piece 6 to flow rightward in a state where the first surface to be dried is upward.

20. Drying the first surface to be dried through the first tuyere group;

specifically, the plurality of first tuyeres 11 of the first tuyere group blow hot air downward to dry the first surface to be dried upward.

30. Adjusting the flow direction of the pole piece 6 to enable the first surface to be dried to face the second tuyere 12;

specifically, the pole piece 6 flowing through the rightmost first carrier roller 21 is guided by the first reversing roller 31 to turn downwards and then turn leftwards, and the first surface to be dried is changed from upwards to downwards.

40. The pole piece 6 is driven to flow through N carrier roller groups, and the first drying surface is dried through a second tuyere group;

specifically, the lower peripheral surfaces of the plurality of first carrier rollers 21 support the pole piece 6 to flow leftwards in a state that the first surface to be dried faces downwards, and in the process that the pole piece 6 flows leftwards, the plurality of second air nozzles 12 blow hot air upwards to dry the first surface to be dried downwards.

50. Adjusting the flow direction of the pole piece 6 to enable the second surface to be dried of the pole piece 6 to face the third tuyere 13;

specifically, the pole piece 6 flowing leftwards is guided to flow downwards by the first turning roller 41, enters the second coating assembly 72 for coating, and the pole piece flowing out of the second coating assembly 72 is guided to flow rightwards by the third turning roller 33, so that the second surface to be dried of the pole piece 6 faces downwards.

60. The pole piece 6 is driven to flow through N carrier roller groups, and the second surface to be dried is dried through a third air nozzle group;

specifically, the lower peripheral surfaces of the plurality of second carrier rollers 22 support the pole piece 6 to flow rightward in a state that the second surface to be dried faces downward, and in the rightward flowing process of the pole piece 6, the plurality of third air nozzles 13 blow hot air upward to dry the second surface to be dried facing downward.

70. Adjusting the flow direction of the pole piece 6 to enable the second surface to be dried of the pole piece 6 to face the fourth tuyere 14;

specifically, the pole piece 6 flowing to the right is guided to flow downwards by the second direction-changing roller 42, and then the pole piece 6 flowing downwards is guided to flow to the left by the third direction-changing roller 43, so that the second surface to be dried of the pole piece 6 faces upwards.

80. The pole piece 6 is driven to flow through the N carrier roller groups, and the second surface to be dried is dried through the fourth air nozzle group.

Specifically, the upper peripheral surfaces of the fourth carrier rollers 24 support the pole pieces 6 to flow leftwards in a state that the second surface to be dried faces upwards, and in the process that the pole pieces 6 flow leftwards, the fourth air nozzles 14 blow hot air downwards to dry the second surface to be dried upwards.

In this embodiment, the oven according to the fifth preferred combination of the first embodiment is taken as an example.

The drying method can be realized through any one of the ovens provided in the first embodiment, that is, the drying method adopts all the technical schemes in the first embodiment, so that the drying method has at least the beneficial effects brought by the technical schemes in the first embodiment, and the drying method is not described in detail herein.

Example III

The embodiment of the invention provides a coating machine provided with an oven, and the specific structure of the oven refers to embodiment one, and the coating machine adopts all the technical schemes of embodiment one, so that the coating machine at least has the beneficial effects brought by the technical scheme of embodiment one, and the detailed description is omitted.

It should be noted that, the coater is provided with the first coating component 71 and the second coating component 72, the first coating component 71 is used for coating wet slurry on one surface of the pole piece 6 to form a first surface to be dried, then the first surface to be dried is dried for the first time and dried for the second time sequentially through the first tuyere set and the second tuyere set, the second coating component 72 is used for coating wet slurry on the other surface of the pole piece 6 to form a second surface to be dried, and finally the third tuyere set and the fourth tuyere set are used for drying the second surface to be dried for the first time and drying the second time sequentially.

Example IV

The coating system provided by the embodiment of the invention is provided with the coating machine and the winding and unwinding device, and the specific structure of the coating machine refers to the first embodiment, and the coating system adopts all the technical schemes of the first embodiment, so that the coating system at least has the beneficial effects brought by the technical scheme of the first embodiment, and the specific structure is not repeated herein.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oven, comprising:

the third air nozzle group comprises C third air nozzles positioned on a third plane, and the C third air nozzles are arranged at intervals along the first direction;

the length of the projections of the first, second, third and fourth tuyere groups in the first direction is smaller than the sum of the lengths of the first, second, third and fourth tuyere groups in the first direction;

the N carrier roller sets are used for supporting the pole piece to flow through in sequence the first tuyere set, the second tuyere set, the third tuyere set and the fourth tuyere set, when the pole piece passes through the first tuyere set, a first surface to be dried of the pole piece faces the first tuyere, when the pole piece passes through the second tuyere set, a first surface to be dried faces the second tuyere, when the pole piece passes through the third tuyere set, a second surface to be dried of the pole piece faces the third tuyere, and when the pole piece passes through the fourth tuyere set, a second surface to be dried faces the fourth tuyere.

2. An oven according to claim 1, characterized in that:

the first, second, third, and fourth tuyere sets are aligned in a direction perpendicular to the first direction.

3. An oven according to claim 1, characterized in that:

the second plane and the third plane are located between the first plane and the fourth plane, and the second plane is close to the first plane;

4. An oven according to claim 3, characterized in that:

the first carrier roller group comprises a first reversing roller and a first carrier roller, the axis of the first reversing roller is positioned on a fifth plane, a first carrier rollers and the first reversing roller are sequentially arranged in parallel at intervals, the axis of the first carrier roller is perpendicular to the first direction, and a is an integer greater than 1;

The second carrier roller group comprises a second reversing roller and b second carrier rollers, the axes of the second reversing roller and the second carrier rollers are positioned on a sixth plane, the b second carrier rollers and the second reversing roller are sequentially arranged in parallel at intervals, the axes of the second carrier rollers are perpendicular to the first direction, and b is an integer larger than 1;

the first reversing roller is used for adjusting the flow direction of the pole piece so as to change the first surface to be dried from being towards the first air nozzle to being towards the second air nozzle;

the second reversing roller is used for adjusting the flow direction of the pole piece so as to change the second surface to be dried from being towards the third air nozzle to being towards the fourth air nozzle.

5. An oven according to claim 4, characterized in that:

the first carrier roller set is also provided with a first turning roller for guiding the pole piece to flow from the first carrier roller to the second carrier roller;

6. An oven according to claim 4 or 5, characterized in that:

the first air nozzles and the second air nozzles are in one-to-one correspondence, and the third air nozzles and the fourth air nozzles are in one-to-one correspondence;

7. An oven according to claim 1, characterized in that:

the first plane and the second plane are located between the third plane and the fourth plane, and the first plane is close to the fourth plane;

the N carrier roller sets comprise a first carrier roller set, a second carrier roller set and a third carrier roller set;

8. An oven according to claim 1, characterized in that:

the first carrier roller set is arranged between the first plane and the second plane, the second carrier roller set is arranged between the second plane and the third plane, and the third carrier roller set is arranged on one side, far away from the third plane, of the fourth plane.

9. An oven according to claim 7 or 8, characterized in that:

the first plane, the fifth plane, the sixth plane, and the seventh plane are parallel to each other.

10. An oven according to claim 9, characterized in that:

or, the first carrier roller corresponds to the interval between two adjacent first air nozzles, the second carrier roller corresponds to the interval between two adjacent third air nozzles, and the third carrier roller corresponds to the interval between two adjacent fourth air nozzles.

11. An oven according to claim 7 or 8, characterized in that:

the first plane, the second plane, the third plane and the fourth plane are replaced with the fourth plane, the third plane, the second plane and the first plane, respectively;

The first carrier roller set and the third carrier roller set are replaced by the third carrier roller set and the first carrier roller set respectively.

12. An oven according to claim 1, characterized in that:

the N carrier roller sets comprise a first carrier roller set, a second carrier roller set, a third carrier roller set and a fourth carrier roller set;

13. An oven according to claim 1, characterized in that:

the fourth plane is arranged between the fourth carrier roller group and the third plane.

14. An oven according to claim 12 or 13, characterized in that:

the first carrier roller group comprises a first carrier rollers with axes in a fifth plane, wherein a first carrier rollers are sequentially arranged in parallel at intervals, and the axes of the first carrier rollers are perpendicular to the first direction;

a. b, c and d are integers greater than 1;

the first plane, the fifth plane, the sixth plane, the seventh plane, and the eighth plane are parallel to each other.

15. An oven according to claim 14, characterized in that:

the first carrier roller corresponds to the first tuyere, the second carrier roller corresponds to the second tuyere, the third carrier roller corresponds to the third tuyere, and the fourth carrier roller corresponds to the fourth tuyere;

or, the first carrier roller corresponds to the interval between two adjacent first air nozzles, the second carrier roller corresponds to the interval between two adjacent second air nozzles, the third carrier roller corresponds to the interval between two adjacent third air nozzles, and the fourth carrier roller corresponds to the interval between two adjacent fourth air nozzles.

16. An oven according to claim 12 or 13, characterized in that:

the first carrier roller set, the second carrier roller set, the third carrier roller set and the fourth carrier roller set are replaced by the fourth carrier roller set, the third carrier roller set, the second carrier roller set and the first carrier roller set respectively.

17. An oven according to claim 1, characterized in that:

the first air nozzle, the second air nozzle, the third air nozzle and the fourth air nozzle are respectively provided with a supporting roller with the axis perpendicular to the first direction.

18. An oven according to claim 1, further comprising:

the return air inlet is arranged at the input end of the circulating air pipe;

The air outlet is close to the air return opening;

the fresh air port is arranged between the air outlet and the circulating fan;

19. An oven according to claim 1, further comprising:

and a rectifying unit for moving the pole piece back to the correct flow path.

20. A drying method, characterized by comprising:

drying the first surface to be dried through a first tuyere set;

the pole piece is driven to flow through N carrier roller groups, and the first drying surface is dried through a second tuyere group;

adjusting the flow direction of the pole piece to enable the second surface to be dried of the pole piece to face a third tuyere;

Adjusting the flow direction of the pole piece to enable the second surface to be dried of the pole piece to face a fourth tuyere;

and driving the pole piece to flow through N carrier roller groups, and drying the second surface to be dried through a fourth air nozzle group.

21. A coater, characterized by comprising:

an oven as claimed in any one of claims 1 to 19.

22. A coating system, comprising:

a coater and unwind as claimed in claim 21.