CN220750577U - Oven, pole piece manufacturing equipment and battery production line - Google Patents

Abstract

The application relates to the technical field of battery manufacturing, and provides an oven, pole piece manufacturing equipment and a battery production line. Wherein, the oven includes: a case; the liquid spraying device comprises a distributor and at least one liquid spraying piece communicated with the distributor, wherein the at least one liquid spraying piece is arranged in the box body and is used for spraying liquid to pole pieces and/or pole lugs in the box body, the distributor is positioned outside the box body, liquid is stored in the distributor, and the liquid spraying quantity of the at least one liquid spraying piece is suitable for being adjusted. Through the technical scheme of this application to this can improve the diaphragm and easily appear drying fracture, beat in the drying process, and improve the condition that the utmost point ear easily appears beating the wrinkle deformation, help improving the qualification rate of pole piece production, and reduce the manufacturing cost of product.

Description

Oven, pole piece manufacturing equipment and battery production line

Technical Field

The application relates to the technical field of battery manufacturing, in particular to an oven, pole piece manufacturing equipment and a battery production line.

Background

This section provides merely background information related to the present disclosure and is not necessarily prior art.

At present, with the rapid development of new energy automobiles, power batteries are increasingly coming into the public view.

In the manufacturing process of the power battery, the power battery particularly needs to enter an oven for drying after the pole piece is coated in the pole piece manufacturing process, and the drying cracking and material dropping of the diaphragm are easy to occur in the drying process due to the high temperature in the oven, and the wrinkling and deformation of the pole lug area are easy to occur in the drying process, so that the pole piece is scrapped, the qualification rate of products is reduced, and the production cost of the products is increased.

Disclosure of Invention

The utility model aims at providing an oven, pole piece manufacture equipment and battery production line for improve the diaphragm and easily appear dry fracture, beat in the drying process, and improve the condition that the utmost point ear easily appears beat and warp, help improving the qualification rate of pole piece production, and reduce the manufacturing cost of product. The aim is achieved by the following technical scheme:

in a first aspect, the present application provides an oven comprising: a case; the liquid spraying device comprises a distributor and at least one liquid spraying piece communicated with the distributor, wherein at least one liquid spraying piece is arranged in the box body and used for spraying liquid to the pole piece and/or the pole lug in the box body, the distributor is positioned outside the box body, and liquid is stored in the distributor and is suitable for adjusting the liquid spraying amount of at least one liquid spraying piece.

According to the oven that this application provided, through increasing the setting with the supporting liquid jet equipment who uses of oven, liquid jet equipment includes the distributor and with the at least one liquid jet spare that the distributor is linked together, through setting up at least one liquid jet spare in the box inside, with the distributor outside that is located the box, store in the distributor and have liquid, and the distributor can adjust the liquid jet capacity of at least one liquid jet spare in real time, in the in-service use, can be in pole piece initial stage of coating, utilize the liquid jet capacity of distributor regulation liquid jet spare more, spout the liquid on the pole piece with this humidity in promoting the oven, thereby improve the diaphragm and play and scribble the diaphragm fracture that the initial stage oven is too dry to arouse, fall the condition of material, wait for normal film, available distributor reduces the liquid jet spare's liquid jet capacity, and utilize the liquid jet spare to drop in the tab region, in order to wet the tab, thereby can improve the tab and lead to the condition of pole piece scrapping because of the wrinkling deformation that excessively dry causes, not only help improving the qualification rate of pole piece production, and help reducing the manufacturing cost of product.

In addition, the oven provided by the application can also have the following additional technical characteristics:

in some embodiments of the present application, the case includes a side plate, a guide rail extending along a first direction is provided on an inner wall surface of the side plate, and the at least one liquid spraying member is movably provided on the guide rail.

Through set up the guide rail that extends along the first direction on the internal face of the curb plate of box to with at least one hydrojet spare movably setting on the guide rail, like this, alright with the position of rational adjustment hydrojet spare on the guide rail according to the actual position of utmost point ear, thereby make hydrojet spare drop to the utmost point ear with moist utmost point ear on with liquid accuracy, and then can realize improving the utmost point ear and easily appear wrinkling the deformation's in the drying process condition.

In some embodiments of the present application, the number of the liquid spraying pieces is plural, and the plural liquid spraying pieces are disposed on the guide rail at intervals along the first direction and are respectively communicated with the dispenser.

The number of the liquid spraying pieces is set to be multiple, so that the positions and the number of the liquid spraying pieces can be reasonably arranged according to the actual number and the positions of the lugs, one liquid spraying piece can be correspondingly arranged above each lug, and the applicability and the compatibility of products are improved.

In some embodiments of the present application, the spray member includes a connecting body and a nozzle provided on the connecting body, the connecting body is provided with a connecting portion, and the connecting portion is movably connected with the guide rail.

The liquid outlet end of the nozzle is used for being arranged towards the pole piece in the box body, and the nozzle can be positioned right above the pole lug area in the conveying process of the pole piece, so that liquid can be sprayed to the pole piece film coating area, and liquid can be dropped on the pole lug. Through locating the nozzle on the connecting body to set up connecting portion on the connecting body, connecting portion can be with spacing hole or trip etc. of guide rail looks adaptation, utilize connecting portion and guide rail swing joint, thereby can realize driving the nozzle along the activity of first direction on the guide rail, with the position of adjusting the nozzle, make the nozzle can correspond with the position of utmost point ear, thereby realize dropping liquid on the utmost point ear, improve the condition that the utmost point ear is dry in-process easily wrinkled and is out of shape.

In some embodiments of the present application, a conveying assembly is disposed in the case, and the conveying assembly is located below the at least one liquid spraying piece, and is configured to drive the pole piece to move along a second direction, where the second direction intersects the first direction.

Through set up the conveying component that is located the hydrojet spare below in the box, then after the pole piece coating, accessible conveying component drives the pole piece and removes along the second direction that intersects with first direction, and in the removal in-process, available hydrojet spare spouts liquid on the pole piece or drips on the utmost point ear to improve oven humidity or the humidity of utmost point ear, thereby improve the problem that the utmost point ear stoving in-process is liable to appear wrinkling and is warp.

In some embodiments of the present application, the transport assembly includes at least two roller assemblies, at least two of the roller assemblies being spaced apart along the second direction.

At least two roller assemblies can rotate relative to the box body, and when the roller assemblies rotate, the pole pieces on the roller assemblies are driven to move along a second direction intersecting with the first direction, so that continuous conveying and drying treatment of the whole pole pieces are realized.

Illustratively, the angle between the first direction and the second direction is 90 degrees.

In some embodiments of the present application, the dispenser has a liquid storage chamber and at least one liquid discharge tube in communication with the liquid storage chamber, and the liquid discharge tube is in communication with the liquid spray member; the liquid discharge pipe is provided with a liquid spraying amount adjusting piece, and the liquid spraying amount adjusting piece is used for adjusting the liquid spraying amount of the liquid spraying piece.

The distributor is provided with at least one liquid discharge pipe, one end of the liquid discharge pipe is communicated with the liquid storage cavity of the distributor, and the other end of the liquid discharge pipe is correspondingly communicated with the nozzle of the liquid spraying piece, so that liquid in the liquid storage cavity can be conveyed to the nozzle and sprayed on the pole piece and the pole lug by the nozzle. The liquid spraying amount adjusting piece is arranged on the liquid discharging pipes and can be a valve or a pumping piece, and the liquid discharging amount of each liquid discharging pipe is adjusted by the liquid spraying amount adjusting piece, so that the adjustment of the liquid spraying amount of the nozzle can be realized.

In some embodiments of the present application, the dispenser is further provided with a pipette, one end of which is in communication with the liquid storage chamber and the other end of which is adapted to be in communication with a liquid supply.

Through set up the pipette that is linked together with the liquid supply device on the distributor, can supply liquid to the stock solution intracavity of distributor through liquid supply device and pipette to satisfy the user demand of oven.

In some embodiments of the present application, the liquid ejection device further includes a controller electrically connected to the liquid ejection amount adjusting member.

The liquid spraying amount adjusting part is electrically connected with the controller, and the controller is used for controlling the liquid spraying amount adjusting part to execute actions so as to automatically adjust the real-time liquid spraying amount of each nozzle, thereby improving the automation level of products and the production efficiency of pole pieces.

In a second aspect, the present application provides a pole piece manufacturing apparatus comprising: the coating device is used for coating the pole piece; and an oven as in any one of the first aspect embodiments, downstream of the coating device, for drying the pole piece.

According to the pole piece manufacturing equipment provided by the application, the coating area of the pole piece is coated by the coating device, and then the coated pole piece is dried by the oven. The drying process adopts the oven according to any one of the embodiments of the first aspect, so that the drying process has the technical effects of any one of the embodiments, and will not be described herein.

In a third aspect, the present application provides a battery production line, including the pole piece manufacturing apparatus according to the second aspect.

The pole piece manufacturing device provided in the present application, because of including the pole piece manufacturing device described in the second aspect, also has the technical effects of any one of the foregoing embodiments, and will not be described herein again.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic view of a partial structure of an oven according to some embodiments of the present application;

FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;

in fig. 1, the direction of the X axis of the coordinate system represents the first direction, and the direction of the Y axis represents the second direction.

The reference numerals are as follows:

100. an oven; 200. a pole piece;

10. a case;

11. a side plate; 12. a guide rail; 13. a roller assembly; 21. a dispenser; 22. a liquid spraying member;

211. a liquid discharge pipe; 212. a pipette; 221. a connecting body; 222. a nozzle;

2211. a connection part; 2221. and a liquid outlet end.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

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

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

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

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

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

In the power battery manufacturing procedure, in particular in the pole piece manufacturing procedure, the pole piece needs to be dried in the oven after being coated, the conditions of drying cracking and material dropping easily occur in the drying process of the diaphragm due to the higher temperature in the oven, and the conditions of wrinkling and deformation of the pole lug area easily occur in the drying process, so that the pole piece is scrapped, the product qualification rate is reduced, and the production cost of the product is increased.

In order to solve the problem that the diaphragm is easy to crack in the drying process, the tab is easy to wrinkle and deform, the application designs an oven, the oven comprises a box body and a liquid spraying device, the liquid spraying device comprises a distributor for adjusting the liquid spraying amount and at least one liquid spraying piece communicated with the distributor, the liquid spraying amount of each liquid spraying piece is adjusted through the distributor in the box body, so that liquid can be sprayed onto a pole piece and a tab at different stages of coating, the humidity in the oven is increased, the tab can be soaked with the liquid, the tab is kept wet, the conditions that the diaphragm is easy to crack in the drying process and the tab is easy to wrinkle and deform in the drying process are improved, the qualification rate of the pole piece is improved, and the production cost is reduced.

The oven 100 disclosed in the embodiment of the application is used on a power battery production line, in particular to pole piece production equipment of a battery, and can be used for drying a pole piece after being coated.

The electrode sheet 200 generally includes a positive electrode sheet and a negative electrode sheet wound or stacked to form an electrode assembly in which electrochemical reaction occurs in a battery cell, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive electrode sheet and the negative electrode sheet having the active material constitute the main body portion of the electrode assembly, and the portions of the positive electrode sheet and the negative electrode sheet having no active material constitute the tabs, respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or located at two ends of the main body portion respectively. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected with the electrode terminal to form a current loop.

Referring to fig. 1, fig. 1 is a schematic partial structure of an oven according to some embodiments of the present application. Embodiments of the first aspect of the present application provide an oven 100 comprising: a case 10; the liquid spraying device comprises a dispenser 21 and at least one liquid spraying piece 22 communicated with the dispenser 21, wherein the at least one liquid spraying piece 22 is arranged in the box body 10 and is used for spraying liquid to the pole piece 200 and/or the pole lug in the box body 10, the dispenser 21 is positioned outside the box body 10, and the dispenser 21 stores liquid and is suitable for adjusting the liquid spraying amount of the at least one liquid spraying piece 22.

In this embodiment, the case 10 defines a drying space, at least one liquid spraying member 22 is disposed in the case 10, and the dispenser 21 can adjust the liquid spraying amount of each liquid spraying member 22 in real time, so that the liquid spraying member 22 can spray liquid to the surface of the pole piece 200 or drop liquid to the pole lug.

According to the oven 100 provided by the embodiment of the application, through adding the liquid spraying device matched with the oven 100, the liquid spraying device comprises the dispenser 21 and at least one liquid spraying piece 22 communicated with the dispenser 21, the dispenser 21 is positioned outside the oven 10 by arranging the at least one liquid spraying piece 22 inside the oven 10, liquid is stored in the dispenser 21, the liquid spraying quantity of the at least one liquid spraying piece 22 can be regulated in real time by the dispenser 21, in the practical use process, the liquid spraying quantity of the liquid spraying piece 22 can be regulated by the dispenser 21 at the initial stage of coating the pole piece 200, so that the humidity in the oven 100 is improved, the situation of membrane cracking and material dropping caused by excessive drying in the oven 100 at the initial stage of coating the membrane is improved, the liquid spraying quantity of the liquid spraying piece 22 can be reduced by the dispenser 21 when the film is normally coated, and the liquid is dripped in the lug area by the liquid spraying piece 22, so that the lug is wetted, the situation of the pole piece 200 is improved, the qualified rate of the production of the pole piece 200 is improved, and the production cost is reduced.

Referring to fig. 1, according to some embodiments of the present application, a case 10 includes a side plate 11, a guide rail 12 extending along a first direction of a horizontal plane is provided on an inner wall surface of the side plate 11, and at least one spray member 22 is movably provided on the guide rail 12.

In the present embodiment, the side plate 11 is one side plate 11 enclosing the drying space of the oven 100, and the side plate 11 extends in the vertical direction. The inner wall surface of the side plate 11 is one wall surface of the side plate 11 facing the inside of the case 10.

The number of the guide rails 12 may be one or plural, and both ends of the guide rails 12 are provided with fixing members by which the guide rails 12 are fixed to the inner wall surfaces of the side plates 11.

The guide rail 12 extending along the first aspect of the horizontal plane is arranged on the inner wall surface of the side plate 11 of the box body 10, and at least one liquid spraying piece 22 is movably arranged on the guide rail 12, so that the position of the liquid spraying piece 22 on the guide rail 12 can be reasonably adjusted according to the actual position of the tab, the liquid spraying piece 22 can accurately drop onto the tab to wet the tab, and the situation that the tab is easy to wrinkle and deform in the drying process can be improved.

Referring to fig. 1, according to some embodiments of the present application, the number of the liquid spraying members 22 is plural, and the plurality of liquid spraying members 22 are disposed on the guide rail 12 at intervals along the first direction and are respectively communicated with the dispenser 21.

In this embodiment, the number of the liquid spraying pieces 22 is set to be multiple, so that the positions and the number of the plurality of liquid spraying pieces 22 can be reasonably arranged according to the actual number and positions of the tabs, so that one liquid spraying piece 22 can be correspondingly arranged above each tab, and the applicability and compatibility of products are improved.

Referring to fig. 1, and further referring to fig. 2, fig. 2 is an enlarged schematic view of a portion a in fig. 1. According to some embodiments of the present application, the spray member 22 includes a connection body 221 and a nozzle 222 disposed on the connection body 221, the connection body 221 is provided with a connection portion 2211, and the connection portion 2211 is movably connected with the guide rail 12.

In the present embodiment, the connection portion 2211 is illustratively a connection hole, which may be in the shape of a rectangular hole or an angular hole, or the like. Or, the connection portion 2211 is a hook, and the hook is adapted to the guide rail 12, and can be hooked on the guide rail 12 to fix, so as to facilitate installation and disassembly.

Nozzle 222 has a liquid inlet end in communication with dispenser 21 and also has a liquid outlet end 2221 for spraying liquid onto pole piece 200 and/or the pole tabs.

The liquid outlet end 2221 of the nozzle 222 is used for being arranged towards the pole piece 200 in the box body 10, and the nozzle 222 can be positioned right above the pole lug area in the conveying process of the pole piece 200, so that liquid can be sprayed to the film coating area of the pole piece 200, and liquid can be dropped on the pole lug. The nozzle 222 is arranged on the connecting main body 221, the connecting part 2211 is arranged on the connecting main body 221, and the connecting part 2211 is movably connected with the guide rail 12, so that the nozzle 222 is driven to move on the guide rail 12 along the first direction, the position of the nozzle 222 is adjusted, the nozzle 222 can correspond to the position of the tab, the liquid is dropped on the tab, and the condition that the tab is easy to crumple and deform in the drying process is improved.

According to some embodiments of the present application, a conveying assembly is disposed in the case 10 and is located below the at least one liquid spraying member 22, for driving the pole piece 200 to move along a second direction, and the second direction intersects the first direction.

In this embodiment, the guide rail extends in a first direction along the horizontal plane, and the transport assembly is used to drive the pole piece 200 to extend in a second direction along the horizontal plane. Wherein preferably the angle between the second direction and the first direction is 90 degrees.

Illustratively, the conveyor assembly may include a conveyor belt and sprocket, or include a roller assembly 13, or the like.

Through setting up the conveying component that is located hydrojet piece 22 below in box 10, then after pole piece 200 coating, accessible conveying component drives pole piece 200 and removes along the second direction that intersects with first direction, and in the removal process, available hydrojet piece 22 spouts the liquid on pole piece 200 or drop on the utmost point ear to improve oven 100 humidity or the humidity of utmost point ear, thereby improve the problem that the utmost point ear stoving in-process is liable to appear wrinkling and is warp.

According to some embodiments of the present application, the transport assembly includes at least two roller assemblies 13, the at least two roller assemblies 13 being spaced apart along the second direction.

In this embodiment, the roller assembly 13 includes a rotating shaft and a roller sleeved on the rotating shaft, the rotating shaft is rotationally connected with the box 10, the roller is used for contacting with the pole piece 200, and the rotating shaft can drive the pole piece 200 on the roller to move along the second direction when rotating.

Because the at least two roller assemblies 13 can rotate relative to the box 10, the at least two roller assemblies 13 rotate to drive the pole piece 200 on the roller assemblies 13 to move along the second direction perpendicular to the first direction, so as to realize continuous conveying and drying treatment of the whole pole piece 200.

Referring to fig. 1, according to some embodiments of the present application, a dispenser 21 has a liquid storage chamber (not shown) and at least one liquid discharge tube 211 in communication with the liquid storage chamber, and the liquid discharge tube 211 is in communication with a nozzle 222; wherein, the liquid discharge pipe 211 is provided with a liquid spray amount adjusting member (not shown in the figure) for adjusting the liquid spray amount of the liquid spray member 22.

In the present embodiment, the liquid ejection amount adjusting member may be a valve or a pumping member or the like, for example. The flow rate of the liquid in the liquid discharge pipe 211 can be controlled and regulated by controlling the opening degree of the valve or the power of the pumping member.

The dispenser 21 is provided with at least one liquid discharge tube 211, one end of the liquid discharge tube 211 is communicated with a liquid storage cavity of the dispenser 21, and the other end is correspondingly communicated with a nozzle 222 of the liquid spraying piece 22, so that liquid in the liquid storage cavity can be conveyed to the nozzle 222 and sprayed on the pole piece 200 and the pole lugs by the nozzle 222. By providing the liquid discharge pipes 211 with liquid injection amount adjusting members, the liquid discharge amount of each liquid discharge pipe 211 is adjusted by the liquid injection amount adjusting members, so that the liquid injection amount of the nozzle 222 can be adjusted.

Referring to fig. 1, according to some embodiments of the present application, the dispenser 21 is further provided with a pipette 212, one end of the pipette 212 being in communication with the liquid storage chamber, and the other end being for communication with the liquid supply device.

In this embodiment, the liquid supply device may be a water tower or a water tank, for example. The number of pipettes 212 may be one or more.

By arranging the liquid suction pipe 212 communicated with the liquid supply device on the dispenser 21, liquid can be supplemented into the liquid storage cavity of the dispenser 21 through the liquid supply device and the liquid suction pipe 212 so as to meet the use requirement of the oven 100.

According to some embodiments of the present application, the liquid ejecting apparatus further includes a controller (not shown in the drawings), and the controller is electrically connected to the liquid ejection amount adjusting member.

In this embodiment, the controller is illustratively a programmable controller of the coating machine, so that the oven 100 and the coating machine can be linked to correspondingly control the spraying amount of the spraying piece 22 according to the operation condition of the coating machine.

The liquid spraying amount adjusting member is electrically connected with the controller, and the controller is used for controlling the liquid spraying amount adjusting member to execute actions so as to automatically adjust the real-time liquid spraying amount of each nozzle 222, thereby improving the automation level of products and the production efficiency of the pole piece 200.

Referring to fig. 1 and 2, according to some embodiments of the present application, an oven 100 is provided, including a cabinet 10 and a liquid spraying device. The case 10 includes a side plate 11, a guide rail 12 is disposed on an inner wall surface of the side plate 11, the guide rail 12 extends along a first direction of a horizontal plane, a roller assembly 13 is further disposed in the case 10, the roller assembly 13 is used for driving the pole piece 200 to move along a second direction of the horizontal plane, and the second direction is perpendicular to the first direction. The liquid ejecting apparatus includes a dispenser 21, a controller, and a plurality of liquid ejecting members 22. A plurality of spray members 22 are movably disposed on the rail 12 for spraying liquid onto the pole pieces 200 and/or lugs. The distributor 21 is provided with a liquid storage cavity, the distributor 21 is further provided with a liquid suction pipe 212 and a plurality of liquid discharge pipes 211 which are communicated with the liquid storage cavity, the liquid suction pipe 212 is used for being communicated with a liquid supply device, the liquid discharge pipes 211 are communicated with the liquid spray pieces 22 in a one-to-one correspondence mode, the liquid discharge pipes 211 are provided with liquid spray amount adjusting pieces used for adjusting liquid flow, the liquid spray amount adjusting pieces are electrically connected with a controller, and the controller is used for controlling the liquid spray amount adjusting pieces to adjust the liquid flow in each liquid discharge pipe 211 in real time. The method has the advantages that the internal humidity of the oven 100 is improved by controlling more spraying liquid in the initial stage of film coating, so that the cracking phenomenon caused by excessive drying of the oven 100 in the initial stage of film coating is improved, the spraying liquid can be controlled to be less when the film is normally coated, the liquid can accurately drop onto the tab, the occurrence of wrinkling deformation caused by thermal expansion and cold contraction due to excessive drying of the tab is reduced, the overall qualification rate of the pole piece 200 is improved, and the production cost of the pole piece 200 is reduced.

According to some embodiments of the present application, embodiments of the second aspect of the present application provide a pole piece 200 manufacturing apparatus comprising a coating device and an oven 100 as in any of the embodiments of the first aspect. Wherein the coating device is used for coating the pole piece 200. The oven 100 is located downstream of the coating apparatus for drying the pole piece 200.

According to the pole piece 200 manufacturing equipment provided by the application, the coating area of the pole piece 200 is coated by using the coating device, and then the coated pole piece 200 is dried by using the oven 100. Since the oven 100 of any one of the embodiments of the first aspect is adopted in the drying process, the technical effects of any one of the embodiments described above are achieved, and are not described herein.

According to some embodiments of the present application, embodiments of a third aspect of the present application provide a battery production line including the pole piece 200 manufacturing apparatus of the embodiments of the second aspect.

The pole piece 200 manufacturing apparatus according to the present application, because of including the pole piece 200 manufacturing apparatus of the second aspect embodiment, also has the technical effects of any of the foregoing embodiments, and will not be described herein again.

The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (11)

1. An oven, comprising:

a case;

the liquid spraying device comprises a distributor and at least one liquid spraying piece communicated with the distributor, wherein at least one liquid spraying piece is arranged in the box body and used for spraying liquid to the pole piece and/or the pole lug in the box body, the distributor is positioned outside the box body, and liquid is stored in the distributor and is suitable for adjusting the liquid spraying amount of at least one liquid spraying piece.

2. The oven of claim 1, wherein the cabinet comprises a side plate, a guide rail extending in a first direction is provided on an inner wall surface of the side plate, and the at least one spray member is movably provided on the guide rail.

3. The oven of claim 2, wherein the number of liquid spraying members is plural, and the plural liquid spraying members are disposed on the guide rail at intervals along the first direction and are respectively communicated with the dispenser.

4. An oven according to claim 2 or 3, wherein the spray member comprises a connecting body and a nozzle provided on the connecting body, the connecting body being provided with a connecting portion, the connecting portion being movably connected with the guide rail.

5. An oven according to claim 2 or 3, wherein a conveying assembly is provided in the oven, the conveying assembly being located below the at least one liquid spraying member for driving the pole piece to move in a second direction, the second direction intersecting the first direction.

6. The oven of claim 5 wherein said conveyor assembly comprises at least two roller assemblies, at least two of said roller assemblies being spaced apart along said second direction.

7. An oven according to any one of claims 1 to 3, wherein the dispenser has a reservoir and at least one drain in communication with the reservoir, and the drain is in communication with the spray;

the liquid discharge pipe is provided with a liquid spraying amount adjusting piece, and the liquid spraying amount adjusting piece is used for adjusting the liquid spraying amount of the liquid spraying piece.

8. An oven according to claim 7, wherein the dispenser is further provided with a pipette having one end in communication with the reservoir and the other end for communication with a liquid supply.

9. The oven of claim 7 wherein said spray device further comprises a controller, said controller being electrically connected to said spray volume adjustment member.

10. A pole piece manufacturing apparatus, comprising:

the coating device is used for coating the pole piece; and

an oven as claimed in any one of claims 1 to 9, located downstream of the coating means, for drying the pole pieces.

11. A battery production line comprising the pole piece manufacturing apparatus of claim 10.