CN117553527A - Drying device and pole piece forming equipment - Google Patents

Abstract

The application provides a drying device and pole piece former, drying device includes: the oven comprises a box body, a humidity adjusting component and a collector, wherein the box body is provided with a containing cavity, the humidity adjusting component is arranged on the box body and used for adjusting the humidity value in the containing cavity, and the collector is used for collecting the humidity value in the containing cavity; and a controller configured to control the humidity adjusting part to adjust the humidity value in the accommodating chamber to be within a preset threshold range when the humidity value exceeds the preset threshold range. The utility model provides a drying device and pole piece former, drying device can satisfy the stoving demand to can reduce the initial stage of reproduction after shut down and by the part surface cracking problem emergence of stoving probability.

Description

Drying device and pole piece forming equipment

Technical Field

The application relates to the field of batteries, in particular to a drying device and pole piece forming equipment.

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles.

In the existing battery manufacturing process, the corresponding components, such as the pole pieces of the battery cells, need to be dried by a drying device to ensure the performance of the pole pieces. However, the existing drying device has the problem that the surface of the part dried in the early stage of reproduction after shutdown is easy to crack.

Disclosure of Invention

In view of the above problems, the application provides a drying device and pole piece forming equipment, wherein the drying device can meet the drying requirement, and the probability of occurrence of surface cracking of the part which is dried in the initial stage and is reproduced after shutdown can be reduced.

In a first aspect, the present application provides a drying apparatus comprising: the oven comprises a box body, a humidity adjusting component and a collector, wherein the box body is provided with a containing cavity, the humidity adjusting component is arranged on the box body and used for adjusting the humidity in the containing cavity, and the collector is used for collecting the humidity value in the containing cavity; and a controller configured to control the humidity adjusting part to adjust the humidity value in the accommodating chamber to be within a preset threshold range when the humidity value exceeds the preset threshold range.

In the technical scheme of this embodiment, drying device includes oven and controller, the oven includes the case body, humidity control part and collector, can adjust the humidity value that holds the intracavity through humidity control part, utilize the collector to gather the humidity value that holds the intracavity, drying device is at the initial stage of shutting down back restart production, the controller can utilize humidity control part to carry out humidification and/or dehumidification to holding the chamber according to the humidity value control humidity control part that the collector gathered, in order to adjust the humidity that holds the intracavity to the threshold value scope of predetermineeing, avoid drying device to shut down the initial stage of reproduction to be dried the part top layer solvent volatilization speed fast, make drying device wait for drying part's surface and inside drying rate unanimous at normal production stage pole piece, and then reduce the probability that the pole piece waits for drying part cracking problem to take place.

In some embodiments, the humidity conditioning component includes a humidifying member for increasing the humidity within the receiving cavity and a dehumidifying member for reducing the humidity within the receiving cavity.

The embodiment of the application provides a drying device, through making humidity control part include humidification spare and dehumidification spare for drying device is less than when predetermineeing the threshold value scope at the humidity value that the collector gathered, handles through humidification spare humidification, in order to increase the humidity that holds the intracavity. When the humidity value acquired by the collector is greater than the preset threshold range, the humidity in the accommodating cavity can be reduced through dehumidification treatment of the dehumidifying part. The humidity in the accommodating cavity can be always kept within the range of a preset threshold value, and the risk that the pole piece waits for the drying part to crack is avoided.

In some embodiments, the controller is configured to control the dehumidifying member to decrease the humidity within the accommodating chamber when the humidity value is above a preset threshold range, and to control the humidifying member to increase the humidity value within the accommodating chamber when the humidity value is below the preset threshold range.

The embodiment of the application provides a drying device, the humidity in the chamber can be held according to the humidity value automatic control that the collector gathered for drying device even the initial stage of reproduction after long-time shut down, hold the humidity in the chamber and can increase rapidly and remain in the threshold value scope in advance all the time, avoid the pole piece to wait for the emergence of the part surface fracture problem of stoving.

In some embodiments, the drying device further comprises a partition plate separating the receiving chamber to form a transmission chamber and a wind chamber, the transmission chamber and the wind chamber are communicated with each other, the humidifying member is communicated with the wind chamber, the dehumidifying member is communicated with the transmission chamber, and the collector is configured to collect humidity in the transmission chamber.

According to the drying device provided by the embodiment of the application, after the transmission cavity and the wind cavity are formed by separating the accommodating cavity through the separating plate, the external fresh air after being heated can be conveyed into the wind cavity, the wind cavity is humidified to a preset threshold range, and then the transmission cavity is conveyed to be used for drying the pole piece, so that the humidity of the pole piece is in the preset threshold range when the pole piece is started to be dried, and the risk of surface cracking of the pole piece can be effectively reduced.

In some embodiments, the collector includes a humidity sensor disposed in the transfer chamber and connected to the tank body.

The embodiment of the application provides a drying device, through making the collector include humidity transducer, simple structure easily purchases and installs, and does benefit to the collection to humidity.

In some embodiments, the number of humidity sensors included in the collector is more than two, wherein one humidity sensor is disposed in a central region of the transmission cavity, and the remaining humidity sensors are disposed at intervals in an edge region of the transmission cavity. The controller is configured to: acquiring a first humidity value acquired by a humidity sensor positioned in a central area and a second humidity value acquired by a humidity sensor positioned in an edge area; obtaining a humidity value in the accommodating cavity according to the weights of the first humidity value and the second humidity value; when the humidity value exceeds a preset threshold range, the humidity adjusting component is controlled to adjust the humidity in the accommodating cavity to be within the preset threshold range.

According to the drying device, the number of the humidity sensors is more than two, the positions of the humidity sensors are limited, meanwhile, the control mode of the controller is beneficial to collecting and adjusting humidity of the region, which is close to the pole piece, in the transmission cavity and the region, which is far away from the pole piece, of the transmission cavity, and the probability of cracking of the pole piece in the drying process is further reduced.

In some embodiments, the humidifying element is disposed outside the wind chamber and is connected to the tank body.

The embodiment of the application provides a drying device, through setting up the humidification piece outside the wind chamber, do benefit to the regulation that holds intracavity humidity.

In some embodiments, the dehumidifying element is disposed within the transfer chamber and is connected to the tank body.

The drying device that this embodiment provided through setting up dehumidification piece in transmission intracavity and with case body coupling, can do benefit to the removal to the pole piece stoving in-process production steam, does benefit to the pole piece and is in the environment that humidity value was in the threshold value range in advance and dries all the time. The occurrence of the pole piece cracking phenomenon can be avoided. Meanwhile, the influence of the too high humidity on the drying rate can be avoided.

In some embodiments, the humidifying element comprises at least one of an ultrasonic humidifying component, an evaporative humidifying component; and/or the dehumidifying element comprises a dehumidifying component.

The embodiment of the application provides a drying device, humidification spare and dehumidifier adopt above-mentioned form, and humidification and dehumidification are effectual, and easy control.

In some embodiments, the partition plate is provided with an air inlet and an air outlet, which are respectively communicated with the transmission cavity and the air cavity.

According to the drying device, the air inlet and the air outlet are formed in the partition plate, so that the air flow used for drying in the air cavity enters the transmission cavity through the air inlet to wait for drying the pole piece, and then the air flow enters the air cavity through the air outlet to be reused, and drying benefits are improved.

In some embodiments, the drying device further comprises an air outlet component, the air outlet component is disposed in the transmission cavity, and the air outlet component is configured to receive the drying air flow in the air cavity and uniformly disperse the drying air flow into the transmission cavity.

The embodiment of the application provides a drying device, through setting up the air-out part, does benefit to the even dispersion of stoving air current in the transmission chamber, guarantees the homogeneity of stoving, optimizes the stoving effect.

In some embodiments, the predetermined threshold range of humidity values is 15% rh to 60% rh.

The embodiment of the application provides a drying device, through making humidity be worth predetermining threshold value scope and adopting above-mentioned numerical range, can enough avoid the pole piece to wait for the emergence of stoving part fracture problem in the stoving process, can also guarantee the stoving speed simultaneously.

In some embodiments, the drying device further comprises a heating member disposed outside the oven, the heating member for heating the gas entering the receiving chamber.

The embodiment of the application provides a drying device through setting up heating element to make heating element set up outside the oven, can guarantee the heating requirement to the stoving with gaseous, simultaneously, can also reduce the volume of case body.

In some embodiments, the drying device further includes a conveying member disposed in the accommodating chamber, the conveying member being for conveying the member to be dried.

The drying device that this application embodiment provided gets into next drying device further drying process through making the pole piece after first drying device drying process, does benefit to the multistage stoving to the pole piece, guarantees the stoving effect.

The drying device that this application embodiment provided, through setting up the conveying part, do benefit to the pole piece and wait for drying the stoving of drying part and carry, be convenient for pole piece etc. get into drying device and the discharge demand after the stoving.

In some embodiments, the number of ovens included in the drying device is more than two, and the more than two ovens are sequentially arranged along the same direction, and two adjacent ovens are communicated.

According to the drying device, the pole piece enters the next drying oven for further drying treatment after being dried by the first drying oven, multistage drying of the pole piece is facilitated, and drying effect is guaranteed.

In some embodiments, each oven is provided with a controller; alternatively, the number of controllers is one and is in communication with the collectors of each oven and the humidity conditioning component.

According to the drying device, each drying oven is correspondingly provided with the controller, the controller is in communication connection with the collector and the controller of the corresponding drying oven, one-to-one control between the controller and the drying oven is achieved, and the control accuracy is improved.

Of course, in some embodiments, the number of controllers may also be one and communicatively coupled to the collectors of each oven and the humidity conditioning component. Through the arrangement, the integration of the controller can be realized, and the overall control is facilitated.

In a second aspect, the present application provides a pole piece forming device, including the above-mentioned drying device.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

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 structural view of a drying device according to an embodiment of the present application;

fig. 2 is a schematic structural view of a drying device according to another embodiment of the present application;

fig. 3 is a schematic structural view of a drying apparatus according to another embodiment of the present application;

fig. 4 is a schematic structural view of a drying apparatus according to still another embodiment of the present application.

Reference numerals in the specific embodiments are as follows:

10-baking oven;

11-a box body; 111-a receiving cavity; 111 a-a transmission chamber; 111 b-wind chamber;

12-humidity adjusting part; 121-a humidifying member; 122-dehumidifying element;

13-a collector; 131-humidity sensor;

20-a controller;

30-dividing plates; 31-an air inlet; 32-an air outlet;

40-an air outlet component;

50-a conveying component;

100-pole piece.

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.

It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present application should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present application belong.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the 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 orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

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, for example, be fixedly connected, detachably connected, or be integrated; 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.

In the description of embodiments of the present application, unless explicitly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediary. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

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.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, and the positive electrode current collector can be made of aluminum for example, the positive electrode active material layer comprises a positive electrode active material, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate and the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode active material may be carbon, silicon, or the like. The material of the separator may be PP (polypropylene) or PE (polyethylene), etc.

In the process of forming the pole piece, the active substance is usually required to be mixed with an adhesive, a conductive agent and the like to form a fluid state, then the fluid state is coated on a corresponding current collector, and then the current collector is dried.

The inventor notices that taking the drying of the pole piece as an example, in the existing drying device, when the pole piece is dried after stopping for a period of time, the surface of the pole piece is easy to crack. The inventor finds through further research that the drying device has an opening stage and a normal production stage, the humidity of the drying device is lower in the opening stage, and the volatilization speed of the surface solvent is higher when the pole piece is dried, so that when the drying device enters the normal production stage, the surface layer of the pole piece is inconsistent with the internal drying speed due to more volatilization of the solvent, and the phenomenon of cracking of the surface occurs.

In order to relieve the problem that the surface of the pole piece waiting drying part of the drying device is cracked in the drying process, the applicant researches and discovers that the humidity inside the drying device can be adjusted according to needs so as to inhibit the problem that the volatilization speed of the surface solvent of the pole piece waiting drying part is higher when the pole piece waiting drying part is dried in the starting stage of the drying device.

Based on the above consideration, in order to solve the problem that the part to be dried of the drying device cracks in the drying process, the inventor has conducted intensive studies and devised a drying device, which comprises a drying oven and a controller, wherein the drying oven comprises a box body, a humidity adjusting part and a collector, the box body is provided with a containing cavity, the humidity adjusting part is arranged on the box body and is used for adjusting the humidity value in the containing cavity, and the collector is used for collecting the humidity value in the containing cavity; the controller is configured to control the humidity adjustment component to adjust the humidity value within the accommodating chamber to be within a preset threshold range when the humidity value exceeds the preset threshold range.

In such drying device, drying device is the initial stage of production of restarting after shutting down, the controller can utilize humidity control part to carry out humidification and/or dehumidification according to the humidity value control humidity control part that the collector gathered to adjust the humidity that holds the intracavity and to predetermineeing the threshold value within range, avoid drying device to shut down the initial stage of reproduction and by the problem that the part top layer solvent volatilization speed is faster that dries, make drying device wait for drying part's surface and inside drying rate unanimous at normal production stage pole piece, and then reduce the pole piece and wait for drying part cracking problem emergence probability.

The technical scheme described in the embodiment of the application is suitable for drying the parts such as the pole pieces of the battery monomers.

Referring to fig. 1, the drying device provided in the embodiment of the application includes an oven 10 and a controller 20, the oven 10 includes a box body 11, a humidity adjusting component 12 and a collector 13, the box body 11 has a containing cavity 111, the humidity adjusting component 12 is disposed in the box body 11 and is used for adjusting the humidity in the containing cavity 111, and the collector 13 is used for collecting the humidity value in the containing cavity 111. The controller 20 is configured to control the humidity adjustment member 12 to adjust the humidity value within the accommodation chamber 111 to be within a preset threshold range when the humidity value exceeds the preset threshold range.

Alternatively, oven 10 may include a box body 11 having a box-type structure with a receiving cavity 111. The components of pole piece 100 waiting to be dried may pass within oven 10 and be dried by oven 10.

Optionally, a heating element may be disposed in the case body 11, which is an alternative embodiment, and in some embodiments, a heating element may be disposed outside the case body 11, and the drying air flow may be heated by the heating element and then conveyed into the accommodating cavity 111 of the case body 11, so that the drying of the pole piece 100 can be achieved.

Alternatively, the humidity conditioning component 12 may be provided with both humidification and dehumidification functions. The humidity conditioning component 12 may be integrated into a unitary arrangement, or may be a split structure.

Optionally, the collector 13 may include a humidity sensor 131, and the number of the humidity sensors 131 included may be one, or of course, may be more than two, for collecting the humidity value in the accommodating cavity 111.

Alternatively, the number of ovens 10 included in the drying apparatus may be one, or may be more than two, and when the number of ovens 10 included in the drying apparatus is more than two, each oven 10 may be correspondingly provided with one controller 20, and of course, a plurality of ovens 10 may share one controller 20.

Alternatively, the preset threshold range may be a range of humidity values of the drying apparatus at a normal production stage.

The embodiment of the application provides a drying device, including oven 10 and controller 20, oven 10 includes case body 11, humidity control part 12 and collector 13, can adjust the humidity value that holds the intracavity 111 through humidity control part 12, utilize collector 13 to gather the humidity value that holds the intracavity 111, drying device is shut down the initial stage of the production of turning on again, controller 20 can be according to the humidity value control humidity control part 12 that collector 13 gathered, utilize humidity control part 12 to humidify and/or dehumidify, in order to adjust the humidity that holds the intracavity 111 to the threshold value within range of predetermineeing, avoid drying device to shut down the initial stage of reproduction by the problem that the part top layer solvent volatilization speed is very fast, make drying device wait for drying part's surface and inside drying speed unanimous at normal production stage pole piece 100, and then reduce the probability that pole piece 100 waited drying part cracking problem takes place.

In some alternative embodiments, the drying device provided in the embodiments of the present application, the humidity adjusting part 12 includes a humidifying part 121 and a dehumidifying part 122, the humidifying part 121 is used for increasing the humidity in the accommodating chamber 111, and the dehumidifying part 122 is used for reducing the humidity in the accommodating chamber 111.

Alternatively, the humidification mode of the humidification member 121 may include, but is not limited to, ultrasonic humidification, direct evaporation humidification, thermal evaporation, and the like.

Alternatively, the dehumidification mode of the dehumidification member 122 may include, but is not limited to, a mode of increasing low-humidity fresh air, increasing exhaust air, and rotating wheel dehumidification.

Alternatively, the humidifying member 121 and the dehumidifying member 122 may be separately disposed and distributed at different positions, and of course, may be integrally disposed at the same position.

The embodiment of the application provides a drying device, through making humidity control part 12 include humidification piece 121 and dehumidification piece 122 for drying device is when the humidity value that collector 13 gathered is less than the threshold value scope of predetermineeing, handles through humidification piece 121 humidification, in order to increase the humidity that holds in the chamber 111. When the humidity value collected by the collector 13 is greater than the preset threshold range, the humidity in the accommodating cavity 111 can be reduced through the dehumidification process of the dehumidification member 122. So that the humidity in the accommodating cavity 111 can be always kept within the preset threshold range, and the risk that the pole piece 100 waits for the drying part to crack is avoided.

In some alternative embodiments, the controller 20 is configured to control the dehumidifying member 122 to decrease the humidity within the accommodating chamber 111 when the humidity value is above a preset threshold range, and to control the humidifying member 121 to increase the humidity within the accommodating chamber 111 when the humidity value is below the preset threshold range.

Alternatively, when the humidity value is higher than the preset threshold range, the humidity in the accommodating chamber 111 may be reduced by exhausting the moisture in the accommodating chamber 111 and rotating the wheel to dehumidify.

Alternatively, when the humidity value is lower than the preset threshold range, water vapor may be delivered into the accommodating chamber 111 by means of ultrasound, evaporation humidification, or the like, so as to increase the humidity in the accommodating chamber 111.

According to the drying device provided by the embodiment of the application, the humidity in the accommodating cavity 111 can be automatically controlled according to the humidity value acquired by the collector 13 through the controller 20, so that the humidity in the accommodating cavity 111 can be rapidly increased and always kept within the range of the preset threshold value even in the initial period of reproduction after long-time shutdown of the drying device, and the problem of surface cracking of a part waiting for drying of the pole piece 100 is avoided.

Referring to fig. 2, in some alternative embodiments, the drying apparatus further includes a partition plate 30, the partition plate 30 partitions the accommodating chamber 111 to form a transmission chamber 111a and an air chamber 111b, the transmission chamber 111a and the air chamber 111b are communicated, the humidifying member 121 is communicated with the air chamber 111b, the dehumidifying member 122 is communicated with the transmission chamber 111a, and the collector 13 is configured to collect humidity in the transmission chamber 111a.

Optionally, the transmission cavity 111a is used to accommodate and dry the pole piece 100, etc.

Optionally, a roller may be disposed within the transfer chamber 111a for supporting and providing operating power to the pole piece 100.

Alternatively, the size of the transmission cavity 111a may be equal to the size of the wind cavity 111b, and of course may be larger than the size of the wind cavity 111 b.

Alternatively, the transmission chamber 111a and the wind chamber 111b may be connected to each other through a pipe outside the case body 11, and of course, a communication hole may be provided in the partition plate 30, through which the transmission chamber 111a and the wind chamber 111b are connected to each other.

Alternatively, both the humidifying member 121 and the dehumidifying member 122 may be provided inside the tank body 11, but may be provided outside the tank body 11. One may also be provided inside the tank body 11 and the other may be provided outside the tank body 11.

According to the drying device provided by the embodiment of the application, after the accommodating cavity 111 is separated to form the transmission cavity 111a and the air cavity 111b through the partition plate 30, the air flow after the outside is heated can be conveyed into the air cavity 111b, the air cavity 111b is humidified to a preset threshold range, and then the transmission cavity 111a is conveyed to be used for drying the pole piece 100, so that the surface cracking risk of the pole piece 100 can be effectively reduced when the pole piece 100 starts to be dried, namely, the humidity is in the preset threshold range.

In some alternative embodiments, the drying device provided in the embodiments of the present application, the collector 13 includes a humidity sensor 131, and the humidity sensor 131 is disposed in the transmission chamber 111a and connected to the case body 11.

Alternatively, the number of the humidity sensors 131 included in the collector 13 may be one, or of course, two or more, and the collector 13 may be connected to the side wall of the case body 11, or of course, may be connected to the bottom of the case body 11.

The embodiment of the application provides a drying device, through making collector 13 include humidity transducer 131, simple structure easily purchases and installs, and does benefit to the collection to humidity.

In some optional embodiments, in the drying device provided in the embodiments of the present application, the number of humidity sensors 131 included in the collector 13 is more than two, wherein one humidity sensor 131 is disposed in a central area of the transmission cavity 111a, and the remaining humidity sensors 131 are disposed at intervals in an edge area of the transmission cavity 111a. The controller 20 is configured to: a first humidity value acquired by the humidity sensor 131 located in the center area and a second humidity value acquired by the humidity sensor 131 located in the edge area are acquired. The humidity value in the accommodating chamber 111 is obtained according to the weights of the first humidity value and the second humidity value. When the humidity value exceeds the preset threshold range, the humidity adjusting part 12 is controlled to adjust the humidity in the accommodating chamber 111 to be within the preset threshold range.

Alternatively, the number of collectors 13 may be two, three or even more.

Alternatively, taking the orthographic projection shape surrounding the side wall forming the transmission cavity 111a as a polygon as an example, the central region of the transmission cavity 111a may be understood as the center position of an inscribed circle or an circumscribed circle of the polygon. The edge region may be understood as the vertex angle region of a polygon.

Alternatively, obtaining the humidity value in the accommodating chamber 111 according to the weight of the first humidity value and the weight of the second humidity value may be understood that the sum of the weight of the first humidity value and the weight of the second humidity value is 1, the weight of the first humidity value is 0.6, and the weight of the second humidity value is 0.4,0.6 times the sum of the first humidity value and the second humidity value which is 0.4 times the weight of the second humidity value, to obtain the humidity value in the accommodating chamber 111.

When the number of the humidity sensors 131 at the edge is two or more and the acquired values are not equal, the humidity values acquired by the humidity sensors 131 at the edge may be averaged to obtain a second humidity value.

According to the drying device provided by the embodiment of the application, the number of the humidity sensors 131 is multiple, the positions of the humidity sensors 131 are limited, and meanwhile, the controller 20 adopts the control mode, so that the collection and humidity adjustment of the humidity values of the region, which is close to the pole piece 100 and is far away from the pole piece 100, in the transmission cavity 111a are facilitated, and the probability of cracking of the pole piece 100 in the drying process is further reduced.

In some alternative embodiments, humidifying member 121 is disposed outside of wind chamber 111b and is connected to tank body 11.

Alternatively, the humidifying member 121 may be connected between the tank bodies 11 in a detachable connection.

Alternatively, the humidifying member 121 may be connected to a side wall of the case body 11 enclosing the wind chamber 111 b.

The drying device provided by the embodiment of the application facilitates the adjustment of the humidity in the accommodating cavity 111 by arranging the humidifying member 121 outside the air cavity 111 b.

In some alternative embodiments, the dehumidifying element 122 is disposed within the transfer chamber 111a and is connected to the tank body 11.

Alternatively, the dehumidifying member 122 may be detachably connected to the tank body 11.

According to the drying device provided by the embodiment of the application, the dehumidifying piece 122 is arranged in the transmission cavity 111a and is connected with the box body 11, so that the removal of water vapor generated in the drying process of the pole piece 100 can be facilitated, and the pole piece 100 can be dried in the environment that the humidity value is in the range of the preset threshold value. The occurrence of the cracking phenomenon of the pole piece 100 can be avoided. Meanwhile, the influence of the too high humidity on the drying rate can be avoided.

In some alternative embodiments, humidifying member 121 includes at least one of an ultrasonic humidifying component, an evaporative humidifying component; and/or, the desiccant 122 includes a dehumidifying component.

Alternatively, the humidifying member 121 includes one of an ultrasonic humidifying member and an evaporation humidifying member, and of course, it is also possible to make the humidifying member 121 include both an ultrasonic humidifying member and an evaporation humidifying member.

The embodiment of the application provides a drying device, humidification spare 121 and dehumidification spare 122 adopt above-mentioned form, and humidification and dehumidification are effectual, and easy control.

As shown in fig. 3, in some alternative embodiments, the partition plate 30 is provided with an air inlet 31 and an air outlet 32, and the air inlet 31 and the air outlet 32 are respectively communicated with the transmission cavity 111a and the air cavity 111 b.

Alternatively, the number of the air inlets 31 and the air outlets 32 may be one for each position and may be spaced apart from each other.

According to the drying device provided by the embodiment of the application, the air inlet 31 and the air outlet 32 are arranged on the partition plate 30, so that the air flow used for drying in the air cavity 111b is facilitated to enter the transmission cavity 111a through the air inlet 31, and then the pole piece 100 and the like are dried, and then the air flow enters the air cavity 111b through the air outlet 32 to be reused, so that the drying benefit is improved.

In some alternative embodiments, the drying device further includes an air outlet component 40, where the air outlet component 40 is disposed in the conveying cavity 111a, and the air outlet component 40 is configured to receive the drying air flow in the air cavity 111b and uniformly disperse the drying air flow into the conveying cavity 111a.

Alternatively, the air outlet member 40 may be a plate-shaped structural body, and a plurality of air outlets 32 are uniformly provided.

Alternatively, the air outlet component 40 may be in communication with the air inlet 31, with the air flow entering from the air inlet 31 being evenly dispersed through the air outlet component 40.

The drying device provided by the embodiment of the application is beneficial to uniformly dispersing the drying airflow in the transmission cavity 111a by arranging the air outlet component 40, so that the drying uniformity is ensured, and the drying effect is optimized.

In some alternative embodiments, the predetermined threshold range of humidity values is 15% rh to 60% rh.

Alternatively, the preset threshold value of the humidity value may be any value between 15% rh and 60% rh, including both ends of 15% rh and 60% rh.

The embodiment of the application provides a drying device, through making humidity be worth predetermining threshold value scope and adopting above-mentioned numerical range, can enough avoid pole piece 100 to take place at the in-process fracture problem of stoving, can also guarantee the stoving speed simultaneously.

In some alternative embodiments, the drying apparatus further comprises a heating member disposed outside oven 10 for heating the gas entering into receiving cavity 111.

Alternatively, the heating element may be electrically heated, fuel heated, or the like.

Alternatively, the gas before entering the accommodating chamber 111 may be heated to a desired temperature by the heating means and then delivered into the air chamber 111b of the accommodating chamber 111 through a delivery pipe or the like.

The embodiment of the application provides a drying device through setting up heating element to make heating element set up outside oven 10, can guarantee the heating requirement to the stoving with gaseous, simultaneously, can also reduce the volume of case body 11.

With continued reference to fig. 3, in some alternative embodiments, the drying apparatus further includes a conveying member 50, where the conveying member 50 is disposed in the accommodating chamber 111, and the conveying member 50 is used to convey the parts to be dried.

Alternatively, the conveying member 50 may be a roller or the like, and of course, may be a belt or the like.

The drying device that this application embodiment provided, through setting up transfer part 50, do benefit to the stoving and the transportation of pole piece 100 wait for the stoving part, the discharge demand after the pole piece 100 etc. entering drying device of being convenient for dries and dries.

Referring to fig. 4, in some alternative embodiments, the number of ovens 10 included in the drying apparatus according to the present embodiment is two or more, and two or more ovens 10 are sequentially arranged along the same direction, and two adjacent ovens 10 are in communication.

Alternatively, the drying apparatus may include two, three or even more ovens 10, and a plurality of ovens 10 may be distributed along the extension direction of the pole piece 100 waiting for drying the components.

Alternatively, when the cabinet body 11 includes the transfer chamber 111a and the air chamber 111b, the transfer chambers 111a of the adjacent two ovens 10 communicate with each other.

According to the drying device, the pole piece 100 enters the next drying oven 10 for further drying treatment after the drying treatment of the first drying oven 10, multistage drying of the pole piece 100 is facilitated, and drying effect is guaranteed.

In some optional embodiments, in the drying device provided by the embodiments of the present application, each oven 10 is correspondingly provided with a controller 20, and the controller 20 is in communication connection with the collector 13 corresponding to the oven 10 and the controller 20, so that one-to-one control between the controller 20 and the oven 10 is realized, and the accuracy of control is improved.

Of course, in some embodiments, it is also possible to have the number of controllers 20 be one and communicatively connected to collectors 13 and humidity conditioning components 12 of each oven 10. By the above arrangement, the integration of the controller 20 can be realized, facilitating overall control.

As shown in fig. 3, the drying device provided in the embodiment of the application includes an oven 10, a controller 20, an air outlet component 40, a heating component and a conveying component 50, the oven 10 includes a box body 11, a humidity adjusting component 12 and a collector 13, the box body 11 has a containing cavity 111, a partition board 30 is provided in the box body 11, the partition board 30 separates the containing cavity 111 to form a transmission cavity 111a and an air cavity 111b, an air inlet 31 and an air outlet 32 are provided on the partition board, and the air inlet 31 and the air outlet 32 are respectively communicated with the transmission cavity 111a and the air cavity 111 b. The humidity adjusting part 12 is provided in the case body 11 and is used for adjusting the humidity value in the accommodating chamber 111, the humidity adjusting part 12 includes a humidifying part 121 and a dehumidifying part 122, the humidifying part 121 is communicated with the wind chamber 111b and is used for increasing the humidity in the accommodating chamber 111, and the dehumidifying part 122 is communicated with the transmission chamber 111a and is used for reducing the humidity in the accommodating chamber 111. The humidifying member 121 is disposed outside the air chamber 111b and connected to the case body 11, and the dehumidifying member 122 is disposed inside the transfer chamber 111a and connected to the case body 11. The collector 13 is used for collecting the humidity value in the accommodating chamber 111. The collector 13 includes more than two humidity sensors 131, wherein one humidity sensor 131 is disposed in a central area of the transmission cavity 111a, and the remaining humidity sensors 131 are disposed in an edge area of the transmission cavity 111a at intervals. The controller 20 is configured to control the humidity adjusting part 12 to adjust the humidity in the accommodating chamber 111 to be within a preset threshold range when the humidity value exceeds the preset threshold range, and specifically, the controller 20 is configured to: acquiring a first humidity value acquired by a humidity sensor 131 positioned in a central area and a second humidity value acquired by a humidity sensor 131 positioned in an edge area; obtaining a humidity value in the accommodating cavity 111 according to the weights of the first humidity value and the second humidity value; when the humidity value exceeds the preset threshold range, the humidity adjusting part 12 is controlled to adjust the humidity in the accommodating chamber 111 to be within the preset threshold range. The air-out part 40 is arranged in the transmission cavity 111a, the air-out part 40 is used for receiving the drying air flow in the air cavity 111b and uniformly dispersing the drying air flow to the transmission cavity 111a, the heating part is arranged outside the oven 10 and used for heating the air entering the accommodating cavity 111, the transmission part 50 is arranged in the accommodating cavity 111, and the transmission part 50 is used for conveying the parts to be dried.

In a second aspect, an embodiment of the present application further provides a pole piece forming apparatus, including the drying device.

According to the pole piece forming equipment, the humidity value in the accommodating cavity 111 can be adjusted through the humidity adjusting component 12 by the drying device provided by the embodiments, the humidity value in the accommodating cavity 111 can be collected by the collector 13, the drying device is started up again for production at the initial stage after stopping, the controller 20 can control the humidity adjusting component 12 according to the humidity value collected by the collector 13, the humidity adjusting component 12 is utilized for humidification and/or dehumidification, the humidity in the accommodating cavity 111 is adjusted to be within a preset threshold range, the problem that the solvent volatilization speed of the surface layer of the component dried at the initial stage of reproduction after stopping of the drying device is fast is avoided, the drying speed of the surface and the inside of the pole piece 100 waiting for the drying component of the drying device is consistent in the normal production stage, the probability that the pole piece 100 waits for the drying component cracking problem to occur is reduced, and the yield of the formed pole piece 100 is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (15)

1. A drying apparatus, comprising:

the oven comprises a box body, a humidity adjusting component and a collector, wherein the box body is provided with a containing cavity, the humidity adjusting component is arranged on the box body and used for adjusting the humidity in the containing cavity, and the collector is used for collecting the humidity value in the containing cavity;

and a controller configured to control the humidity adjusting part to adjust the humidity value in the accommodating chamber to be within a preset threshold range when the humidity value exceeds the preset threshold range.

2. The drying apparatus according to claim 1, wherein the humidity adjusting means includes a humidifying member for increasing the humidity in the accommodating chamber and a dehumidifying member for reducing the humidity in the accommodating chamber;

the controller is configured to control the dehumidifying element to reduce the humidity in the accommodating chamber when the humidity value is higher than the preset threshold range, and to control the humidifying element to increase the humidity in the accommodating chamber when the humidity value is lower than the preset threshold range.

3. The drying apparatus according to claim 2, further comprising a partition plate that partitions the accommodation chamber into a transmission chamber and a wind chamber, the transmission chamber and the wind chamber being in communication, the humidifying member being in communication with the wind chamber, the dehumidifying member being in communication with the transmission chamber, the collector being configured to collect a humidity value in the transmission chamber.

4. A drying apparatus according to claim 3, wherein the collector comprises a humidity sensor disposed in the transmission chamber and connected to the tank body.

5. The drying apparatus according to claim 4, wherein the number of the humidity sensors included in the collector is two or more, one of the humidity sensors is disposed in a central region of the transmission chamber, and the remaining humidity sensors are disposed at intervals in an edge region of the transmission chamber;

the controller is configured to:

acquiring a first humidity value acquired by the humidity sensor in the central area and a second humidity value acquired by the humidity sensor in the edge area;

obtaining the humidity value in the accommodating cavity according to the weights of the first humidity value and the second humidity value;

and when the humidity value exceeds a preset threshold range, controlling the humidity adjusting component to adjust the humidity in the accommodating cavity to be within the preset threshold range.

6. A drying apparatus according to claim 3, wherein the humidifying member is disposed outside the air chamber and connected to the case body.

7. A drying apparatus according to claim 3, wherein the dehumidifying member is disposed in the transfer chamber and is connected to the cabinet body.

8. A drying apparatus according to claim 3, wherein the partition plate is provided with an air inlet and an air outlet, which communicate with the transmission chamber and the air chamber, respectively.

9. The drying apparatus of claim 3, further comprising an air outlet member disposed in the transport chamber, the air outlet member configured to receive the flow of drying air in the air chamber and uniformly disperse the flow of drying air into the transport chamber.

10. The drying apparatus according to any one of claims 1 to 9, wherein the preset threshold value of the humidity value ranges from 15% rh to 60% rh.

11. The drying apparatus according to any one of claims 1 to 9, further comprising a heating member disposed outside the oven for heating the gas entering the accommodation chamber.

12. The drying apparatus according to any one of claims 1 to 9, further comprising a conveying member provided in the accommodation chamber, the conveying member being for conveying the member to be dried.

13. The drying apparatus according to any one of claims 1 to 9, wherein the drying apparatus includes two or more ovens, the two or more ovens being disposed one after another in the same direction, and two adjacent ovens being communicated.

14. The drying apparatus according to claim 13, wherein each of the ovens is provided with one of the controllers; alternatively, the number of controllers is one and is in communication with the collectors and the humidity conditioning components of each oven.

15. A pole piece forming apparatus comprising a drying device according to any one of claims 1 to 14.