Drying device and battery manufacturing system

Abstract

The present application relates to a drying apparatus and a battery manufacturing system including a drying tower and a cooling mechanism. [Solution] The drying tower is provided with a cooling mechanism, and the cooling mechanism cools and lowers the temperature of the inner wall of the drying tower so that the temperature of the inner wall of the drying tower is controlled within a required temperature range. When spray drying is performed in the drying tower in this manner, after the material comes into contact with the inner wall of the drying tower, the high inner wall temperature prevents fusion, and the probability of the material hanging on the wall is reduced, thereby improving the productivity and granulation quality of the material.

Description

[Technical field]

[0001] This application incorporates the Chinese patent application entitled “Drying Apparatus and Battery Manufacturing System” filed on March 16, 2023 and bearing the number 2023205036983, which is incorporated herein by reference in its entirety.

[0002] The present application relates to the technical field of drying equipment, and in particular to a drying device and a battery manufacturing system. [Background technology]

[0003] Spray drying refers to the process of blowing hot air into the drying tower from the tower mouth and contacting the atomized material to rapidly dry the moisture in the material. However, during atomization drying, the material is easily attached to the inner wall of the drying tower, resulting in the wall hanging phenomenon of the material, which affects the productivity and granulation quality of the material. Summary of the Invention [Problem to be solved by the invention]

[0004] Based on the above, there is a need to provide a drying apparatus and a battery manufacturing system that can reduce the occurrence probability of the wall hanging phenomenon of material and improve the production rate and granulation quality of material. [Means for solving the problem]

[0005] According to a first aspect, the present application provides a drying apparatus including a drying tower and a cooling mechanism provided in the drying tower for lowering a temperature of an inner wall of the drying tower, the cooling mechanism including a reinforcing member and a cooling member provided on an outer wall of the drying tower, and at least a portion of the reinforcing member is connected between the cooling member and the outer wall of the drying tower. Effect of the Invention

[0006] In the above drying apparatus, a cooling mechanism is provided in the drying tower, and the cooling mechanism cools and lowers the temperature of the inner wall of the drying tower, thereby controlling the temperature of the inner wall of the drying tower within a required temperature range. When spray drying is performed in the drying tower in this way, after the material comes into contact with the inner wall of the drying tower, the high inner wall temperature prevents fusion, thereby reducing the probability of the material hanging on the wall, thereby improving the production rate and granulation quality of the material. At the same time, a reinforcing member is provided between the cooling member and the drying tower, improving the connection strength between the two, making the mounting structure of the cooling member to the drying tower more stable, facilitating the cooling medium to stably lower the temperature of the drying tower in the cooling member, and at the same time helping to reinforce the strength of the drying tower.

[0007] In some embodiments, the cooling mechanism includes a power source and a cooling member provided on an outer wall of the drying tower, the cooling member having a cooling passage, and the power source is for driving a cooling medium to flow through the cooling passage. In this way, by driving the cooling medium to flow through the cooling passage by the power source, heat exchange is performed between the cooling medium and the drying tower, the effect of lowering the temperature of the inner wall of the drying tower is realized, and the occurrence of the wall hanging phenomenon of the substance is reduced.

[0008] In some embodiments, the cooling element is installed around the outer periphery of the drying tower and forms a cooling passage between the cooling element and the outer wall of the drying tower. In this way, the cooling medium flows directly through the outer wall of the drying tower, which is advantageous for improving the heat exchange effect.

[0009] In some embodiments, the cooling mechanism further includes a flow equalizer disposed around the outer periphery of the drying tower, the inlet end of the cooling passage communicates with the flow equalizer, and the power source is for driving the cooling medium in the flow equalizer to flow into the cooling passage. In this way, the flow equalizer is disposed at the inlet end of the cooling passage, and the flow equalizer uniformly distributes the cooling medium in the cooling passage, which makes the temperature distribution of the inner wall of the drying tower more uniform, further reduces the occurrence of the wall hanging phenomenon of the material, and is also advantageous in improving the granulation quality of the material.

[0010] In some embodiments, the reinforcing member is provided around the outer periphery of the drying tower, and a flow port through which the cooling medium of the cooling passage flows is provided at a portion of the reinforcing member located in the cooling passage. By providing the flow port penetrating the reinforcing member in this manner, the cooling medium can smoothly flow through the cooling passage beyond the reinforcing member, thereby improving the temperature reduction effect of the drying tower.

[0011] In some embodiments, the reinforcing member is provided with one end thereof, which is located radially away from the drying tower, penetrating the cooling member. By penetrating one end of the reinforcing member through the cooling member in this manner, the connection area between the reinforcing member and the cooling member is increased, which is advantageous for reinforcing the connection strength, and at the same time, the portion of the reinforcing member that is inserted through the cooling member can be used as a support base, so that the cooling member can be more stably attached to the drying tower.

[0012] In some embodiments, the drying tower has an air outlet, and the cooling element extends to a position adjacent to the air outlet on the outer wall of the drying tower. In this way, by extending the cooling element to the air outlet, the cooling temperature drop at the air outlet is increased and the blowing air temperature is reduced to meet the process requirements.

[0013] In some embodiments, the drying tower includes a first section and a second section having an outlet, the cross-sectional area S of the second section gradually decreases from one end of the second section close to the first section to one end of the second section having the outlet, and the cooling member is provided in the first section and extends to the second section. In this manner, by extending the cooling member to the second section, the cooling temperature drop in the second section can be increased, the temperature of the air blown from the drying tower can be lowered, and the process requirements can be further met.

[0014] In some embodiments, the cooling mechanism further includes an exhaust member provided in the drying tower and having an exhaust port communicating with the cooling passage. By providing the exhaust member so that the cooling medium flows out from the exhaust port, new cooling medium can be easily continuously introduced into the cooling passage, thereby improving the temperature reduction effect of the drying tower.

[0015] In some embodiments, the number of outlets is at least two, and all the outlets are spaced around the circumference of the drying tower. In this way, the outlets are spaced around the circumference of the drying tower, which is advantageous for changing the flow path of the cooling medium in the cooling passage by making the cooling medium in the cooling passage flow out from different outlets, making the distribution of the cooling medium more uniform and improving the temperature reduction effect.

[0016] In some embodiments, the drying device further includes a heat insulation layer exteriorly wrapped around the cooling member. In this way, the heat insulation layer is provided outside the cooling member, which reduces heat loss in the cooling passage and ensures sufficient heat exchange between the cooling medium and the drying tower, thereby maintaining the inner wall of the drying tower at a required temperature for a long time and reducing the probability of the material sticking to the wall due to the inner wall temperature being too high.

[0017] In some embodiments, the drying apparatus further includes a heat exchanger that is connected to one end of the cooling member through which the cooling medium flows in. In this way, the heat exchanger exchanges heat with the cooling medium in advance, changing the temperature of the cooling medium to better meet the temperature reduction requirement of the inner wall of the drying tower.

[0018] According to a second aspect, the present application provides a battery manufacturing system including the drying apparatus according to any one of the above claims.

[0019] The above description is merely an outline of the technical content of the present application, and in order to make the technical means of the present application more clearly understandable, it is possible to implement the present application according to the contents of the specification, and in order to make the above and other objects, features and advantages of the present application more clearly understandable, the following particularly describes the form for implementing the present application. [Brief description of the drawings]

[0020] Various other benefits and advantages will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings are used only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. In addition, the same elements are designated by the same reference numerals in all the drawings. In the drawings,

[0021] [Figure 1] FIG. 1 is a schematic diagram of a drying device according to one or more embodiments. [Diagram 2] FIG. 2 is a schematic diagram of the structure of the reinforcing member in FIG. [Diagram 3] FIG. 2 is a partial enlarged schematic view of a portion A in FIG. [Figure 4] FIG. 1 is a schematic diagram of a drying apparatus including a heat exchanger according to one or more embodiments. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, in combination with the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described.

[0023] It is clear that the described embodiments are not all of the embodiments of the present application, but only some of the embodiments. All other embodiments that a person skilled in the art can obtain based on the embodiments of the present application without making any inventive efforts belong to the scope of the claims of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are used only for the purpose of describing specific examples and are not intended to limit the present application. The terms "including", "having" and any variations thereof in the specification, claims and above drawings of this application are intended to cover non-exclusive inclusion.

[0025] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are used only to distinguish different objects, and cannot be understood to indicate or imply their relative importance, or to imply the number of components, a particular order, or a hierarchical relationship that they indicate. In the description of the embodiments of the present application, unless otherwise clearly and specifically limited, "plurality" means two or more.

[0026] Reference to an "embodiment" in this specification means that the particular feature, structure, or characteristic described in the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. It should be understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments of the present application, the term "and / or" is merely a relational relationship for describing related objects, and indicates that three kinds of relations can exist. For example, A and / or B can indicate three cases: only A exists, A and B exist simultaneously, and only B exists. In addition, the character " / " in this specification generally indicates that the related objects before and after it are in an "or" relationship.

[0028] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple sheets" refers to two or more sheets (including two sheets).

[0029] In the description of the embodiments of the present application, the directions or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc. are based on the directions or positional relationships shown in the drawings, and are merely intended to facilitate and simplify the description of the embodiments of the present application, and do not indicate or imply that the devices or elements shown necessarily have a specific orientation and must be configured or operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0030] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "attached", "coupled", "connected", "fixed" and the like should be understood broadly, for example, they may be fixedly connected, detachably connected, or integrated; they may be mechanically connected, electrically connected; they may be directly connected, indirectly connected via an intermediate medium, or they may be in communication within two members or in a relationship of interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present application according to the specific circumstances.

[0031] Spray drying refers to the process of blowing hot air into the drying tower from the tower mouth and contacting it with the atomized material to rapidly dry the moisture in the material. During drying, if the hot air continues to pass through the drying tower, the inside of the drying tower will be heated and the temperature of the inner wall of the drying tower will reach a certain temperature value. For example, for temperature-sensitive materials such as nano-electric fuel, feather enzyme decomposition protein, Chinese herbal medicine extract, or other sugar-rich materials, when the materials come into contact with the inner wall of the drying tower, they will melt at high temperatures and tend to adhere to the inner wall of the drying tower, resulting in the wall-hanging phenomenon of materials. With the increase in the wall-hanging phenomenon, the amount of materials adhering to the inner wall of the drying tower will increase, and the amount of materials produced from the drying tower will decrease, resulting in a waste of materials and a decrease in the production rate of products.

[0032] At the same time, some of the material adhering to the inner wall of the drying tower may fall off when blown by hot air. The particle size of the fallen material changes after melting, and generally becomes larger than the particle size of the material after normal drying, so the fallen material is mixed into the material after drying and affects the particle size quality of the product.

[0033] Based on this, in order to effectively reduce the probability of the occurrence of the wall-hanging phenomenon of the material and improve the productivity and granulation quality of the material, referring to Fig. 1, the present application has designed a drying apparatus 100 in which a cooling mechanism 20 is disposed in a drying tower 10 and the cooling mechanism 20 cools and lowers the temperature of the inner wall 11 of the drying tower 10. In this way, when spray drying is performed in the drying tower 10, after the material comes into contact with the inner wall 11 of the drying tower 10, the high temperature of the inner wall 11 prevents the fusion phenomenon from occurring, thereby reducing the probability of the occurrence of the wall-hanging phenomenon of the material and thereby improving the productivity and granulation quality of the material.

[0034] At the same time, by cooling and lowering the temperature of the inner wall 11 of the drying tower 10 by the cooling mechanism 20, substances are less likely to adhere to the inner wall 11 of the drying tower 10, and the difficulty of cleaning the inner wall 11 of the drying tower 10 is reduced. In addition, as more substances adhere to the inner wall 11 of the drying tower 10, the internal space of the drying tower 10 is reduced, and the granulation space becomes smaller, which affects the granulation effect of the equipment. For this reason, by lowering the temperature of the inner wall 11 by the cooling mechanism 20, the probability of the substance hanging on the wall phenomenon can be similarly reduced, the degree to which the internal space of the drying tower 10 is reduced, and the granulation effect of the equipment can be improved.

[0035] The drying apparatus 100 provided herein can be applied to the spray drying process of different materials, for example, but not limited to, the drying apparatus 100 can be applied to the spray drying process of nano-electrofuel.

[0036] According to some embodiments of the present application, with reference to Fig. 1, the present application provides a drying apparatus 100 including a drying tower 10 and a cooling mechanism 20. The cooling mechanism 20 is provided in the drying tower 10 and serves to lower the temperature of an inner wall 11 of the drying tower 10, where the cooling mechanism 20 includes a reinforcing member 25 and a cooling member 22 provided on an outer wall of the drying tower 10, and at least a portion of the reinforcing member 25 is connected between the cooling member 22 and the outer wall of the drying tower 10.

[0037] The drying tower 10 refers to equipment for drying materials, and can pass hot air through the inside of the drying tower 10 to dry the materials atomized by the hot air. The hot air can be transported into the drying tower 10 in a top-down manner, a bottom-up manner, or even from the side of the drying tower 10. The shape of the drying tower 10 can be designed in various ways, for example, a cylindrical shape, a cone shape, a rectangular parallelepiped shape, and the like, but is not limited thereto. When the drying tower 10 is designed to have a tapered structure, the tapered portion can play a role of collecting the materials after drying, making it easy to transport the materials together.

[0038] It can be understood that the method of introducing the material into the drying tower 10 is usually through the top or side of the drying tower 10. For example, an atomizing nozzle is provided at the top of the drying tower 10, and the material is atomized and sprayed into the drying tower 10 by the atomizing nozzle so as to come into contact with hot air.

[0039] The cooling mechanism 20 refers to equipment capable of lowering the temperature of the inner wall 11 of the drying tower 10, and there are various cooling methods for the inner wall 11 of the drying tower 10, such as air-cooling or water-cooling, or using a Peltier sheet. The cooling mechanism 20 may also be disposed in the drying tower 10 in various ways, such as being disposed on the outer wall of the drying tower 10 or being embedded in the tower wall of the drying tower 10.

[0040] The cooling mechanism 20 may be designed, for example, as a plate-like structure such as a water-cooled plate structure, or may be designed, for example, as a tubular structure such as a cooling water pipe structure.

[0041] The cooling member 22 is a structure that allows the flow of the cooling medium and enables heat exchange between the cooling medium and the drying tower 10. The cooling member 22 can be designed to have a hollow structure in which the inside can be directly used as a cooling passage 23, or can be designed to have a plate or sheet-like structure, in which case a cooling passage can be formed on the outer surface of the cooling member 22, for example, a gap that can be used as a cooling passage can be formed between the cooling member 22 and the outer wall of the drying tower 10. When the cooling member 22 is designed to have a hollow structure, it can be a tubular or hollow plate-like structure, in which the tubular cooling member 22 can be wrapped around the outer wall of the drying tower 10.

[0042] The reinforcing member 25 refers to a structure connected between the cooling member 22 and the outer wall of the drying tower 10. There are various types of connection methods between the cooling member 22 and the drying tower 10. For example, the reinforcing member 25 can be connected between the cooling member 22 and the drying tower 10 by bolting, welding, engaging, gluing, crimping, pin fastening, or an integral molding method, etc.

[0043] In addition, the reinforcing member 25 shown in FIG. 1 is not provided so as to penetrate the drying tower 10 in the lateral direction, but has a ring-shaped structure surrounding the outer periphery of the reinforcing member 25. Of course, the reinforcing member 25 shown in FIG. 1 is merely one embodiment and cannot be interpreted as limiting the scope of the rights of the present solution. For example, between the cooling member 22 and the drying tower 10, the reinforcing member 25 may have a block-shaped structure or a ring-shaped structure. When the reinforcing member 25 has a ring-shaped structure, the reinforcing member 25 is connected between the cooling member 22 and the drying tower 10 in the circumferential direction. The number of the reinforcing members 25 may be one or more. When the number of the reinforcing members 25 is more than one, there are various designs for the distribution of all the reinforcing members 25 between the cooling member 22 and the desiccant, such as some of the reinforcing members 25 being arranged at intervals along the height direction X of the drying tower 10, or some of the reinforcing members 25 being arranged at intervals around the circumferential direction of the drying tower 10.

[0044] When spray drying is performed in the drying tower 10, after the material comes into contact with the inner wall 11 of the drying tower 10, the high temperature of the inner wall 11 prevents the material from melting, reducing the probability of the material hanging on the wall, thereby improving the productivity and granulation quality of the material. At the same time, a reinforcing member 25 is provided between the cooling member 22 and the drying tower 10 to reinforce the connection strength between them, making the mounting structure of the cooling member 22 to the drying tower 10 more stable, facilitating the stable cooling of the drying tower 10 by the cooling medium in the cooling member 22, and at the same time, advantageously reinforcing the strength of the drying tower 10.

[0045] 1, according to some embodiments of the present application, the cooling mechanism 20 further includes a power source 21. The cooling member 22 has a cooling passage 23, and the power source 21 is for driving a cooling medium to flow through the cooling passage 23.

[0046] The power source 21 refers to equipment capable of supplying power to the flow of the cooling medium, and may be a blower, a power pump, or the like. When the power source 21 is a blower, the cooling medium may be air, carbon dioxide, or the like. Here, the air may be air outside the drying tower 10, and the air outside the drying tower 10 is blown in or sucked in by the blower and transported to the cooling passage 23. When the power source 21 is a power pump, the cooling medium may be tap water, a glycerin-type cooling liquid, or the like.

[0047] The power of the power source 21 can be set to an adjustable state, that is, the power source 21 is a variable frequency equipment, so that the amount of inflow of the cooling medium can be controlled (for example, the amount of air blown through the cooling passage 23 can be adjusted) by changing the power of the power source 21 according to the demand for lowering the temperature of the inner wall 11 of the drying tower 10. For example, a temperature monitoring device (for example, a temperature sensor, etc.) is provided at a certain distance from the inner wall 11 of the drying tower 10, and the amount of cold air passed can be adjusted by detecting the temperature change in different areas of the inner wall 11 of the drying tower 10 in real time. Also, if too much cooling medium is passed through, condensation may occur on the inner wall 11 of the drying tower 10. In this case, too, the frequency of the power source 21 can be changed to reduce the amount of inflow of the cooling medium and reduce the probability of condensation on the inner wall 11.

[0048] By using the power source 21 to drive the cooling medium to flow through the cooling passage 23, heat exchange takes place between the cooling medium and the drying tower 10, which has the effect of lowering the temperature of the inner wall 11 of the drying tower 10 and reduces the occurrence of the wall hanging phenomenon of materials.

[0049] According to some embodiments of the present application, referring to FIG. 1, the cooling member 22 is provided around the outer periphery of the drying tower 10 and forms a cooling passage 23 between the cooling member 22 and the outer wall of the drying tower 10.

[0050] The cooling member 22 is installed around the outer periphery of the drying tower 10, and the cooling member 22 is surrounded by the outside of the drying tower 10, and it can be understood that there is a certain gap between the cooling member 22 and the outer wall of the drying tower 10. By making this gap a direct cooling passage 23, the cooling medium is brought into direct contact with the outer wall of the drying tower 10, thereby improving the heat exchange effect.

[0051] At the same time, the cooling member 22 is installed around the outside of the drying tower 10, and there are various types of fixing methods for it. For example, the cooling member 22 is fixed to the outer wall of the drying tower 10 by bolting, welding, engagement, crimping, etc.

[0052] By surrounding the cooling member 22 on the outside of the drying tower 10, a cooling passage 23 is formed between the cooling member 22 and the drying tower 10, so that the cooling medium flows directly along the outer wall of the drying tower 10, which is advantageous in improving the heat exchange effect.

[0053] 1, according to some embodiments of the present application, the cooling mechanism 20 further includes a flow equalizer 26 disposed around the outer periphery of the drying tower 10. The inlet end of the cooling passage 23 is connected to the flow equalizer 26, and the power source 21 is for driving the cooling medium in the flow equalizer 26 to flow into the cooling passage 23.

[0054] The flow equalizer 26 refers to a device for uniformly distributing the cooling medium and allowing the cooling medium to flow relatively uniformly into the cooling passage 23. When the cooling medium enters the flow equalizer 26 due to the action of the power source 21, the flow equalizer 26 is structured to be installed around the outer periphery of the drying tower 10, so that the entered cooling medium flows around the outer periphery of the drying tower 10 inside the flow equalizer 26, and is dispersed before entering the cooling passage 23. Specifically, in some embodiments, the flow equalizer 26 can be designed as a ring-shaped hollow box structure.

[0055] The inlet end of the cooling passage 23 refers to the end of the cooling passage 23 where the cooling medium starts to flow in. The cooling passage 23 is formed by the cooling member 22 around the outer periphery of the drying tower 10, so the inlet end of the cooling passage 23 also has an annular end or a nearly annular end. If the inlet end of the cooling passage 23 is connected to the flow equalizer 26, it can be understood that the inlet end of the cooling passage 23 and the flow equalizer 26 should be connected in an annular manner, that is, the communication port between the cooling passage 23 and the flow equalizer 26 is provided around the outer periphery of the drying tower 10, so that the cooling medium filled in the flow equalizer 26 flows into the cooling passage 23 synchronously in different directions, and the cooling medium is uniformly distributed in the cooling passage 23.

[0056] When the power source 21 is a blowing-type equipment, the power source 21 can be connected to the cooling passage 23 via the flow equalizer 26, and when the power source 21 is a suction-type equipment, the flow equalizer 26 is connected to the inlet end of the cooling passage 23, and the power source 21 is connected to the outlet end of the cooling passage 23.

[0057] A flow equalizer 26 is provided at the inlet end of the cooling passage 23, and the flow equalizer 26 uniformly distributes the cooling medium in the cooling passage 23, thereby making the temperature distribution on the inner wall 11 of the drying tower 10 more uniform and further reducing the occurrence of the wall hanging phenomenon of the material, which is also advantageous in improving the granulation quality of the material.

[0058] According to some embodiments of the present application, with reference to FIG. 1 , the cooling mechanism 20 further includes a reinforcing member 25 at least partially connected between the cooling member 22 and the outer wall of the drying tower 10 .

[0059] In some embodiments of the present application, referring to FIG. 2, the reinforcing member 25 is provided around the outer periphery of the drying tower 10, and a flow port 251 through which the cooling medium of the cooling passage 23 flows is provided in the portion of the reinforcing member 25 located in the cooling passage 23.

[0060] The reinforcing member 25 can extend around the outer periphery of the drying tower 10 to form a ring-shaped structure, and since the reinforcing member 25 is located between the cooling member 22 and the drying tower 10, the ring-shaped reinforcing member 25 impedes the flow of the cooling medium to some extent. In order to ensure a smooth flow of the cooling medium, the reinforcing member 25 is provided with a flow port 251 penetrating therethrough, and the flow port 251 allows the cooling medium to flow through the cooling passage 23 beyond the reinforcing member 25.

[0061] The number of the flow ports 251 may be one or more in the same reinforcing member 25. When the number of the flow ports 251 is more than one, all the flow ports 251 are arranged around the outer periphery of the drying tower 10 on the reinforcing member 25 with intervals therebetween.

[0062] In order to allow the cooling medium to flow smoothly through the cooling passage 23 over the reinforcing member 25, a flow port 251 is provided penetrating the reinforcing member 25, thereby improving the temperature lowering effect of the drying tower 10.

[0063] According to some embodiments of the present application, referring to FIG. 3, the reinforcing member 25 is provided such that one end thereof, which is far from the drying tower 10 in the radial direction of the drying tower 10, penetrates the cooling member 22.

[0064] It should be understood that one end of the reinforcing member 25 penetrates the cooling member 22 as one end of the reinforcing member 25 being fitted into the cooling member 22 and protruding from the cooling member 22. When one end of the reinforcing member 25 penetrates the cooling member 22, it is necessary to seal the part of the reinforcing member 25 penetrating the cooling member 22, for example, by welding between the cooling member 22 and the reinforcing member 25 or applying a sealant. When a heat-retaining structure is provided outside the cooling member 22, the one end of the reinforcing member 25 remote from the drying tower 10 may penetrate the cooling member 22 and the heat-retaining structure at the same time. In addition, when the reinforcing member 25 is designed to have a ring-shaped structure, the one end of the reinforcing member 25 remote from the drying tower 10 may be understood as the outer end of the ring-shaped structure.

[0065] By penetrating one end of the reinforcing member 25 through the cooling member 22, the connection area between the reinforcing member 25 and the cooling member 22 is increased, which is advantageous for reinforcing the connection strength. In addition, the part of the reinforcing member 25 that is inserted into the cooling member 22 can serve as a support base, thereby more stably attaching the cooling member 22 to the drying tower 10.

[0066] According to some embodiments of the present application, the drying tower 10 has an outlet 12. The cooling member 22 extends to a position adjacent to the outlet 12 on the outer wall of the drying tower 10.

[0067] During drying, control of the hot air intake temperature and the hot air blowing temperature is very important as they can determine the product quality and dry bulk density, so these two temperatures need to be strictly controlled. By extending the cooling member 22 to the blowing port 12, i.e., by extending the cooling passage to the blowing port 12, the cooling temperature drop at the blowing port 12 can be increased and the blowing air temperature can be lowered to meet the process requirements.

[0068] The cooling member 22 is extended to the air outlet 12 to increase the cooling temperature drop at the air outlet 12 and lower the air temperature to meet the process requirements.

[0069] 1 , according to some embodiments of the present application, a drying tower 10 includes a first portion 13 and a second portion 14 having an outlet 12. A cross-sectional area S in the second portion 14 gradually decreases from one end of the second portion 14 close to the first portion 13 to one end of the second portion 14 having the outlet 12, and a cooling member 22 is provided in the first portion 13 and extends to the second portion 14.

[0070] The cross-sectional area S of the second member becomes smaller closer to the outlet 12, which indicates that the second member has a structure that becomes smaller from top to bottom, for example, the second member has a tapered design, which makes it easier to discharge dried materials collectively.

[0071] By extending the cooling member 22 to the second portion 14, the cooling temperature drop in the second member can be increased, and the blowing air temperature of the drying tower 10 can be lowered to better meet the requirements of the process.

[0072] 1, according to some embodiments of the present application, the cooling mechanism 20 further includes a discharge member 24 provided in the drying tower 10. The discharge member 24 has a discharge port 241 communicating with the cooling passage 23.

[0073] The discharge member 24 may be provided at the top of the drying tower 10 or at the bottom of the drying tower 10. When the discharge member 24 is provided at the top of the drying tower 10, the cooling medium can be introduced from the bottom of the drying tower 10, and the cooling medium flows from bottom to top at this time. Here, the top and bottom of the drying tower 10 can be understood to mean that, when the drying tower 10 is normally operating, a higher end of the drying tower 10 in the vertical direction is the top, and a relatively lower end is the bottom, etc.

[0074] The method of attaching the discharge member 24 to the drying tower 10 may be, but is not limited to, bolting, engaging, caulking, welding, or bonding. There are various types of communication methods between the discharge outlet 241 and the cooling passage 23. For ease of understanding, the case where the discharge member 24 is provided at the top of the drying tower 10 will be taken as an example. The discharge member 24 can be provided at an interval at the top of the drying tower 10 so that a passage is formed between the discharge member 24 and the top of the drying tower 10. Then, the cooling member 22 is connected to the outer periphery of the discharge member 24 so that an integrated lid or cover structure is formed between the discharge member 24 and the cooling member 22. When the cooling member 22 is directly fitted to the exterior of the drying tower 10, the cooling passage 23 on the cooling member 22 communicates with the passage between the discharge member 24 and the top of the drying tower 10. Alternatively, the discharge member 24 can be provided by covering the top of the drying tower 10. Then, the cooling member 22 can be provided around the side of the drying tower 10, and one end of the cooling member 22 can be extended to surround the outer periphery of the discharge member 24. At this time, the discharge member 24 may have an opening communicating with the inside of itself (at this time, the discharge member 24 may have a hollow structure), and the opening communicates with the cooling passage 23 between the cooling member 22 and the drying tower 10, thereby maintaining communication between the cooling passage 23 and the discharge port 241. Specifically, in some embodiments, the discharge member 24 and the cooling member 22 are of an integral structure, and are integrally attached to the outer wall of the drying tower 10. In addition, when the discharge member 24 is provided at the upper part of the drying tower 10, it can serve as a support for equipment, for example, to support the installation of a spray head of the drying tower 10 or to allow maintenance personnel to climb to the top of the tower to perform maintenance.

[0075] By providing the discharge member 24 so that the cooling medium flows out from the discharge port 241, new cooling medium tends to continue to flow into the cooling passage 23, improving the temperature lowering effect of the drying tower 10.

[0076] According to some embodiments of the present application, referring to FIG. 1, the number of outlets 241 is at least two, and all the outlets 241 are spaced around the circumference of the drying tower 10 .

[0077] The number of outlets 241 and the interval between two adjacent outlets 241 can be determined according to the actual temperature reduction requirements, and are not particularly limited here. At the same time, when the outlets 241 are arranged at intervals around the circumference of the drying tower 10, the outlets 241 may be arranged around one circumference, or multiple outlets 241 distributed up and down may be arranged around the circumference. Specifically, in some embodiments, the outlets 241 may be distributed at equal intervals around the circumference of the drying tower 10 on the discharge member 24 so as to make the discharge of the cooling medium more uniform.

[0078] If the outlets 241 are spaced apart around the circumference of the drying tower 10 so that the cooling medium in the cooling passage 23 flows out from different outlets 241, this is advantageous in changing the flow path of the cooling medium in the cooling passage 23, making the distribution of the cooling medium more uniform and improving the temperature reduction effect.

[0079] According to some embodiments of the present application, referring to FIG. 1, the drying apparatus 100 further includes a thermal insulation layer 30 exteriorly wrapped around the cooling member 22 .

[0080] The heat-retaining layer 30 refers to a structure that can reduce the rate of heat transfer, and examples thereof include, but are not limited to, an asbestos layer, a silicate layer, a rock wool layer, an expanded perlite layer, etc. There are various types of connection methods for the heat-retaining layer 30 to the cooling member 22, and examples thereof may include, but are not limited to, bolting, bonding, welding, engagement, etc.

[0081] By providing a heat retaining layer 30 outside the cooling member 22 and reducing heat loss in the cooling passage 23, heat exchange between the cooling medium and the drying tower 10 is sufficiently performed, so that the inner wall 11 of the drying tower 10 is maintained at a required temperature for a long period of time, and the probability of the material sticking to the wall due to the temperature of the inner wall 11 being too high is reduced.

[0082] According to some embodiments of the present application, and referring to FIG. 4, the drying apparatus 100 further includes a heat exchanger 40 in communication with one end of the cooling member 22 through which the cooling medium flows.

[0083] The heat exchanger 40 refers to equipment capable of exchanging heat with the cooling medium, and may be designed to have a structure such as a heat dissipation fin. When the temperature of the cooling medium (such as air at room temperature) cannot meet the temperature reduction requirements, the heat exchanger 40 may be connected to the input end of the cooling passage 23 to reduce the temperature of the cooling medium. When the power source 21 is a blower, the heat exchanger 40 may be connected between the power source 21 and one end of the cooling member 22 into which the cooling medium flows. When a flow equalizer 26 is connected to one end of the cooling member 22 into which the cooling medium flows, the heat exchanger 40 may be connected to one end of the cooling member 22 via the flow equalizer 26.

[0084] The heat exchanger 40 exchanges heat with the cooling medium in advance to change the temperature of the cooling medium, thereby more effectively satisfying the requirement for lowering the temperature of the inner wall 11 of the drying tower 10.

[0085] According to some embodiments of the present application, the present application provides a battery manufacturing system including the drying apparatus 100 according to any one of the above.

[0086] According to some embodiments of the present application, referring to Figs. 1 to 4, the present application provides a drying device 100 in which a cooling member 22 is provided between a drying tower 10 and a heat-retaining layer 30, and air is blown from the bottom of the cooling member 22, and room-temperature air, which is lower than the temperature of the drying tower 10, is passed through to lower the temperature of the inner wall 11. The heat-retaining layer 30 is provided outside the cooling member 22 to maintain the inner wall 11 at a required temperature for a long time, so that the material does not melt when it comes into contact with the inner wall 11. In addition, several annular reinforcing members 25 are welded between the drying tower 10 and the cooling member 22. A power source 21 (e.g., a fan, etc.) is attached to the bottom of the drying tower 10, and air at room temperature is sucked and sent into the cooling passage 23, and the air passes through a flow port 251 on the reinforcing member 25 and reaches the upper part of the drying tower 10, and an exhaust port 241 is provided at the upper part to exhaust the hot air.

[0087] Finally, it should be explained that the above embodiments are merely for illustrating the technical solutions of the present application, and do not limit the present application. Although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions described in the above embodiments can still be amended, or some or all of the constituent elements therein can be replaced equally. These amendments or replacements should not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present application, and should be included in the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the constituent elements mentioned in each embodiment may be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, and includes all technical solutions falling within the scope of the claims.

[0088] The components of the embodiments described above can be combined in any manner, and for the sake of brevity, not all possible combinations of the components in the embodiments described above are described; however, as long as there is no contradiction in the combination of these components, it should be considered to be within the scope described in this specification.

[0089] The above-mentioned examples only show some embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as limiting the scope of the patent application. However, those skilled in the art can make some modifications and improvements without departing from the concept of the present application, which are within the scope of the patent application. Therefore, the scope of the patent application should be determined based on the scope of the attached claims. [Explanation of symbols]

[0090] 100 drying device; 10 drying tower; 11 inner wall; 12 outlet; 13 first portion; 14 second portion; 20 cooling mechanism; 21 power source; 22 cooling member; 23 Cooling passage; 24 Discharge member; 241 Discharge port; 25 Reinforcement member; 251 Distribution port; 26 Flow equalizer; 30 Heat insulation layer; 40 Heat exchanger;

Claims

1. A drying tower (10); a cooling mechanism (20) provided in the drying tower (10) for lowering a temperature of an inner wall (11) of the drying tower (10), The cooling mechanism (20) includes a reinforcing member (25) and a cooling member (22) provided on the outer wall of the drying tower (10), and the reinforcing member (25) is at least partially connected between the cooling member (22) and the outer wall of the drying tower (10). drying equipment.

2. The cooling mechanism (20) further includes a power source (21), the cooling member (22) includes a cooling passage (23), and the power source (21) is for driving a cooling medium to flow through the cooling passage (23).

2. The drying device according to claim 1.

3. The cooling member (22) is provided around the outer periphery of the drying tower (10) and forms the cooling passage (23) between itself and the outer wall of the drying tower (10).

3. The drying device according to claim 2.

4. The cooling mechanism (20) further includes a flow equalizer (26) provided around the outer periphery of the drying tower (10), an inlet end of the cooling passage (23) is connected to the flow equalizer (26), and the power source (21) drives the cooling medium in the flow equalizer (26) to flow into the cooling passage (23).

4. The drying device according to claim 3.

5. The reinforcing member (25) is provided around the outer periphery of the drying tower (10), and a flow port (251) through which the cooling medium of the cooling passage (23) flows is provided at a portion of the reinforcing member (25) located in the cooling passage (23).

3. The drying device according to claim 2.

6. The reinforcing member (25) is provided such that one end thereof, which is far from the drying tower (10) in the radial direction of the drying tower (10), penetrates the cooling member (22).

2. The drying device according to claim 1.

7. The drying tower (10) has an air outlet (12), and the cooling member (22) extends to a position adjacent to the air outlet (12) on the outer wall of the drying tower (10).

7. A drying device according to claim 1.

8. The drying tower (10) includes a first portion (13) and a second portion (14) having the air outlet (12), a cross-sectional area S in the second portion (14) gradually decreases from one end of the second portion (14) close to the first portion (13) toward one end of the second portion (14) having the air outlet (12), and the cooling member (22) is provided in the first portion (13) and extends to the second portion (14).

8. The drying device according to claim 7.

9. The cooling mechanism (20) further includes an exhaust member (24) provided in the drying tower (10) and having an exhaust port (241) communicating with the cooling passage (23).

9. A drying device according to any one of claims 2 to 8.

10. The number of the outlets (241) is at least two, and all of the outlets (241) are spaced around the circumference of the drying tower (10).

10. The drying device according to claim 9.

11. The cooling member (22) further includes a heat insulating layer (30) that is sheathed on the outside.

11. A drying device according to any one of claims 1 to 10.

12. The cooling member further includes a heat exchanger (40) that communicates with one end into which a cooling medium flows in.

11. A drying device according to any one of claims 1 to 10.

13. A battery manufacturing system comprising the drying device according to any one of claims 1 to 12.

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