Coating pole piece drying equipment
By setting a closed annular cavity with spiral partition plates inside the heat-conducting roller and a circulating liquid bath system, combined with an air circulation system, the problems of uneven heating and large footprint of lithium battery electrode drying equipment are solved, achieving efficient and uniform electrode drying and improved space utilization.
Patent Information
- Application Number
- CN202520028709.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing lithium battery electrode drying equipment suffers from low heating efficiency, uneven heating, and large footprint, making it difficult to meet the demands of high production capacity and improved space utilization.
The heat-conducting roller is equipped with a closed ring cavity formed by a spiral partition plate. Combined with a circulating liquid bath system and an air circulation system, it achieves uniform distribution of the heated fluid and heat transfer. The heat-conducting roller heats the electrode in contact with the electrode, and is combined with non-contact hot air drying to improve heating uniformity and drying efficiency, while reducing the equipment footprint.
It achieves uniform heating and efficient drying of the electrode sheets, reduces the equipment footprint, improves space utilization, and meets high production capacity requirements while achieving energy conservation and emission reduction.
Smart Images
Figure CN223761426U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of lithium battery coating, and in particular to a coating electrode drying device. Background Technology
[0002] Electrode coating is one of the most important key technologies in battery production. Specifically, it refers to the uniform application of electrode coating slurry onto the conductive film of the positive and negative electrode materials of lithium batteries. Electrode coating is of great significance to batteries, mainly in the following aspects: its impact on the capacity of the finished battery (if the coating thickness is inconsistent at different positions of the electrode during the coating process, the battery capacity will be too low or too high); its impact on battery consistency (if the parameters of the electrodes are inconsistent before and after, it will cause large differences in capacity and cycle life); and its impact on battery safety.
[0003] In existing technologies, non-contact drying methods such as forced-air drying, convection drying, and hot air drying are commonly used to dry and remove moisture from battery electrodes. However, these methods have low heating efficiency and uneven heating. Furthermore, with the increasing production capacity and the rapid increase in the production speed of coating equipment, battery manufacturers are placing increasingly higher demands on the technical requirements of coating machines, resulting in faster coating speeds. This leads to continuous increases in the length of drying ovens, as well as higher floor space and equipment costs. Designing a coating electrode drying device that can improve the heating uniformity and drying efficiency of the coated materials, while reducing the floor space required to improve space utilization, is a technical problem that enterprise R&D personnel urgently need to solve. Utility Model Content
[0004] To address the shortcomings of the prior art, this application provides a coating electrode drying apparatus.
[0005] The above-mentioned inventive objective of this application is achieved through the following technical solutions:
[0006] The housing has a heat-conducting roller rotatably mounted inside. The housing has an inlet and an outlet. The coated electrode sheet is fed into the inlet and wound around the heat-conducting roller, and is discharged from the outlet. The heat-conducting roller is used to abut against the electrode sheet. The heat-conducting roller has a closed annular cavity inside.
[0007] A partition plate is disposed within the closed ring cavity and is spiral in shape. A spiral infusion channel is formed between the closed ring cavity and the partition plate. An inlet and an outlet are provided inside the closed ring cavity. The inlet is located on the inlet side of the infusion channel, and the outlet is located on the outlet side of the infusion channel.
[0008] A circulating liquid bath system is used to input heated fluid into the inlet and receive heated fluid output from the outlet.
[0009] By adopting the above technical solution, under the action of the circulating liquid bath system, the heated fluid is input from the inlet into the closed ring cavity, then enters from the inlet side of the liquid delivery channel, exits from the outlet side of the liquid delivery channel, and then returns to the circulating liquid bath system from the outlet, forming a complete liquid heating cycle. The heated fluid can be distributed step by step in the spiral liquid delivery channel to ensure that the heated fluid is evenly distributed in the closed ring cavity inside the heat-conducting roller, thereby making the surface of the heat-conducting roller uniformly heated. This improves the heating uniformity of the electrode sheet when conducting heat with the heat-conducting roller, improves the heating uniformity and drying efficiency of the coating material, and by using the heat-conducting roller to perform contact heating and drying of the electrode sheet, it not only dries the coating material but also guides the electrode sheet for transportation, allowing the electrode sheet transportation process to take place in the vertical space dimension, thereby reducing the floor space of the drying equipment and improving space utilization.
[0010] In a preferred embodiment, this application may be further configured such that: the number of the partition plates is multiple, and multiple spirally arranged infusion channels are formed between the closed ring cavity and the multiple partition plates, the multiple infusion channels form a multi-head spiral structure, and the multiple partition plates are distributed at equal intervals inside the closed ring cavity.
[0011] By adopting the above technical solution, multiple partition plates are set at equal intervals to form multiple infusion channels of the same width, thus forming a multi-head spiral structure. The dense infusion channels and long lead can improve the temperature uniformity of the closed ring cavity and increase the flow velocity of the heated fluid in each infusion channel, thereby improving the heat transfer efficiency of the closed ring cavity.
[0012] In a preferred embodiment, this application may be further configured such that: the number of the partition plates is multiple, and multiple spirally arranged infusion channels are formed between the closed ring cavity and the multiple partition plates, the multiple infusion channels form a multi-head spiral structure, and the multiple partition plates are distributed at unequal intervals inside the closed ring cavity.
[0013] By adopting the above technical solution, and by adjusting the spacing of the partition plates to adjust the spacing of the multi-headed spiral structure, the size of each infusion channel can be flexibly controlled, thereby controlling the flow speed and path of the fluid in the infusion channel, thus meeting the heating requirements of different parts of the electrode.
[0014] In a preferred embodiment, this application may be further configured such that: the number of the partition plates (4) is multiple, and multiple infusion channels are formed between the closed annular cavity and the multiple partition plates in a spiral arrangement, the multiple infusion channels forming a multi-head spiral structure, and the pitch of each spiral-shaped partition plate is the same.
[0015] By adopting the above technical solution, the same pitch is maintained to form multiple infusion channels of the same width. The dense infusion channels and long lead can improve the temperature uniformity of the closed ring cavity and increase the flow velocity of the heated fluid in each infusion channel, thereby improving the heat transfer efficiency of the closed ring cavity.
[0016] In a preferred embodiment, this application may be further configured such that: the number of the partition plates (4) is multiple, and multiple infusion channels are formed between the closed annular cavity and the multiple partition plates in a spiral arrangement, the multiple infusion channels forming a multi-head spiral structure, and the pitch of each spiral-shaped partition plate is different.
[0017] By adopting the above technical solution and adjusting the pitch of the spiral structure formed by each partition plate, the size of each infusion channel can be controlled, thereby controlling the flow speed and path of the fluid in the infusion channel, meeting the heating requirements of different parts of the electrode, and achieving the function of local heat preservation. Technicians can make adjustments according to actual needs.
[0018] In a preferred embodiment, this application may be further configured such that: the number of partition plates is multiple, and multiple spirally arranged infusion channels are formed between the closed ring cavity and the multiple partition plates, the multiple infusion channels forming a multi-head spiral structure, wherein a portion of the infusion channels formed by the partition plates and the closed ring cavity are connected to another portion of the infusion channels formed by the partition plates and the closed ring cavity.
[0019] By adopting the above technical solution, the heated fluid can be evenly distributed in the progressively distributed delivery channels, thereby ensuring uniform heating of the surface of the heat-conducting roller.
[0020] In a preferred embodiment, this application can be further configured such that: the number of water inlets and water outlets are both multiple, the multiple water inlets are all located on the inlet side of the infusion channel and are arranged along the length direction of the partition plate, and the multiple water outlets are all located on the outlet side of the infusion channel and are arranged along the length direction of the partition plate.
[0021] By adopting the above technical solution, setting multiple water inlets and multiple water outlets, and cooperating with the circulating liquid bath system, the flow velocity of the heated fluid in the closed ring cavity can be increased, thereby improving the heat transfer efficiency inside the closed ring cavity and improving the heating efficiency of the heat-conducting roller.
[0022] In a preferred embodiment, the present application may be further configured such that: the circulating liquid bath system includes a circulating liquid pipe assembly, a liquid reservoir, and a pump body; the circulating liquid pipe assembly is located inside the heat-conducting roller and is connected to the inlet and the outlet; the liquid reservoir is connected to the circulating liquid pipe assembly; the liquid reservoir contains a heated fluid and is equipped with a heating element for heating the heated fluid; and the pump body is connected between the liquid reservoir and the circulating liquid pipe assembly.
[0023] By adopting the above technical solution, a complete liquid heating circulation system is formed among the circulating liquid pipe group, the liquid reservoir, the pump body, and the closed ring cavity. After the heated fluid is heated inside the liquid reservoir, it is transported from the inlet to the closed ring cavity through the circulating liquid pipe group under the action of the pump body, so as to conduct heat to the outer surface of the heat-conducting roller and realize the heat conduction effect on the electrode. After passing through the water supply channel, the heated fluid returns to the circulating liquid pipe group from the outlet and then returns to the liquid reservoir, realizing the recycling of the heated fluid and meeting the requirements of energy conservation and emission reduction.
[0024] In a preferred embodiment, this application may be further configured such that: a liquid slip ring is coaxially disposed on the heat-conducting roller, and the liquid slip ring is connected between the circulating liquid pipe assembly and the liquid reservoir.
[0025] By adopting the above technical solution and setting up a liquid slip ring, the problems of twisting, entanglement or breakage of the circulating liquid pipe assembly during the rotation of the heat-conducting roller can be avoided, which is suitable for pipeline transportation conditions.
[0026] In a preferred embodiment, the present application may be further configured such that the coated electrode drying equipment further includes an air circulation system, the air circulation system including a blower, a first ventilation box, an exhaust fan and a second ventilation box, the blower and the exhaust fan being respectively disposed outside the box body, the first ventilation box being disposed between the blower and the box body, and the second ventilation box being disposed between the exhaust fan and the box body.
[0027] By adopting the above technical solution, in the air circulation system, the blower, in conjunction with the first ventilation box, can send external air into the box through the ventilation box, and the exhaust fan, in conjunction with the second ventilation box, can exhaust the air inside the box to form an air circulation inside the box. This can remove the liquid vapor generated when the coating material on the electrode is heated, continuously carry away the solvent components, reduce the interference of vapor on the electrode inside the box, and thus improve the drying efficiency and heating uniformity of the electrode.
[0028] In a preferred embodiment, this application may be further configured such that the first ventilation box contains a plurality of heating tubes for generating heat.
[0029] By adopting the above technical solution, several heating tubes inside the first ventilation box heat the incoming air to form high-temperature hot air. After the high-temperature hot air enters the closed box, it can dry the coating surface of the electrode sheet. That is, heat is transferred from the outer layer to the inner layer of the coating material through non-contact heat conduction. Combined with the contact heat conduction of the heat-conducting roller, it is possible to simultaneously heat the outer and inner layers of the coating material on the electrode sheet, thereby improving the drying efficiency and heating uniformity of the air conditioner.
[0030] In a preferred embodiment, this application may be further configured such that a filter screen is provided inside the first ventilation box.
[0031] By adopting the above technical solution, a filter screen is installed inside the first ventilation box, which can improve the cleanliness of the gas delivered to the box and reduce the possibility of the electrode being contaminated.
[0032] In summary, this application includes at least one of the following beneficial technical effects:
[0033] 1. Under the action of the circulating liquid bath system, the heated fluid is input into the closed ring cavity from the inlet, then enters from the inlet side of the liquid delivery channel, exits from the outlet side of the liquid delivery channel, and then returns to the circulating liquid bath system from the outlet, forming a complete liquid heating cycle. The heated fluid can be distributed step by step in the spiral liquid delivery channel to ensure that the heated fluid is evenly distributed in the closed ring cavity inside the heat-conducting roller, thereby making the surface of the heat-conducting roller uniformly heated. This improves the heating uniformity of the electrode sheet when conducting heat with the heat-conducting roller, improves the heating uniformity and drying efficiency of the coated material, and by using the heat-conducting roller to heat and dry the electrode sheet in contact, it not only dries the coated material but also guides the electrode sheet for transportation. This allows the electrode sheet transportation process to take place in the vertical space dimension, thereby reducing the floor space of the drying equipment and improving space utilization.
[0034] 2. The circulating liquid pipe assembly, the liquid reservoir, the pump body, and the closed ring cavity form a complete liquid heating circulation system. After being heated inside the liquid reservoir, the heated fluid is transported from the inlet to the closed ring cavity through the circulating liquid pipe assembly under the action of the pump body, so as to conduct heat to the outer surface of the heat-conducting roller and realize the heat conduction effect on the electrode. After passing through the water supply channel, the heated fluid returns to the circulating liquid pipe assembly from the outlet and then returns to the liquid reservoir, realizing the recycling of the heated fluid and meeting the requirements of energy conservation and emission reduction.
[0035] 3. In the air circulation system, the blower, in conjunction with the first ventilation box, can send outside air into the box through the ventilation box, and the exhaust fan, in conjunction with the second ventilation box, can exhaust the air inside the box to form an air circulation inside the box. This can remove the liquid vapor generated when the coating material on the electrode is heated, and continuously carry away the solvent components, thereby reducing the interference of vapor on the electrode inside the box and improving the drying efficiency and heating uniformity of the electrode. Attached Figure Description
[0036] Figure 1 This is a schematic diagram of the overall structure of the coating electrode drying equipment in one embodiment of this application;
[0037] Figure 2 This is a schematic diagram of the external structure of the heat-conducting roller in one embodiment of this application;
[0038] Figure 3 This is a schematic diagram of the internal structure of the heat-conducting roller in one embodiment of this application;
[0039] Figure 4 This is a schematic diagram of the internal structure of the heat-conducting roller in another embodiment of this application;
[0040] Figure 5 This is a schematic diagram of the internal structure of the heat-conducting roller in another embodiment of this application;
[0041] Figure 6 This is a schematic diagram of the structure of the heat-conducting roller after the portion has been removed in one embodiment of this application.
[0042] Reference numerals: 1. Box body; 2. Heat-conducting roller; 3. Closed annular cavity; 4. Divider plate; 5. Liquid delivery channel; 6. Water inlet; 7. Water outlet; 8. Circulating liquid pipe assembly; 9. Liquid slip ring; 10. Air circulation system; 101. Blower; 102. First ventilation box; 103. Exhaust fan; 104. Second ventilation box. Detailed Implementation
[0043] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.
[0044] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.
[0045] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.
[0046] A coating electrode drying apparatus of this application is described below with reference to the accompanying drawings.
[0047] Reference Figures 1 to 6 Among them, such as Figure 1 , Figure 2 and Figure 3 As shown, the coated electrode drying equipment includes a housing 1, inside which a heat-conducting roller 2 is rotatably mounted. The housing 1 has an inlet and an outlet. The coated electrode is fed through the inlet and wound around the heat-conducting roller 2, and then discharged through the outlet. The heat-conducting roller 2 is used to contact the electrode. A closed annular cavity 3 is provided inside the heat-conducting roller 2. A partition plate 4 is provided inside the closed annular cavity 3. The partition plate 4 is spiral in shape. A spiral liquid delivery channel 5 is formed between the closed annular cavity 3 and the partition plate 4. A water inlet 6 and a water outlet 7 are provided inside the closed annular cavity 3. The water inlet 6 is located on the inlet side of the liquid delivery channel 5, and the water outlet 7 is located on the outlet side of the liquid delivery channel 5. The equipment also includes a circulating liquid bath system, which is used to input the heated fluid into the water inlet 6 and receive the heated fluid output from the water outlet 7. During operation, under the action of the circulating liquid bath system, the heated fluid flows from the water inlet... The fluid is fed into the closed ring cavity 3, then enters from the inlet side of the infusion channel 5, exits from the outlet side of the infusion channel 5, and is then returned to the circulating liquid bath system from the outlet 7, forming a complete liquid heating cycle. The heated fluid can be distributed step by step in the spiral infusion channel 5 to ensure that the heated fluid is evenly distributed in the closed ring cavity 3 inside the heat-conducting roller 2, thereby making the surface of the heat-conducting roller 2 uniformly heated. This improves the uniformity of heating of the electrode sheet when it conducts heat with the heat-conducting roller 2, improves the heating uniformity and drying efficiency of the coating material, and by using the heat-conducting roller 2 to heat and dry the electrode sheet in contact, it not only dries the coating material but also guides the electrode sheet for transport. This allows the electrode sheet transport process to take place in the vertical space dimension, thereby reducing the floor space of the drying equipment and improving space utilization.
[0048] Preferably, such as Figure 4 and Figure 5 As shown, there are multiple partition plates 4, and multiple spirally arranged infusion channels 5 are formed between the closed annular cavity 3 and the multiple partition plates 4. The multiple infusion channels 5 form a multi-head spiral structure. The multiple partition plates 4 are distributed at intervals inside the closed annular cavity 3. By setting multiple partition plates 4, multiple infusion channels 5 are formed. The infusion channels 5 are dense and have a long lead, which can improve the temperature uniformity of the closed annular cavity 3 and increase the flow rate of the heated fluid in each infusion channel 5, thereby improving the heat transfer efficiency of the closed annular cavity 3, and further improving the heating temperature uniformity and heat transfer efficiency of the heat-conducting roller 2.
[0049] It should be noted that in the above embodiments, the pitch of the spiral structure formed by each partition plate 4 can be the same or different, and the spacing of the multi-head spiral structure formed by multiple partition plates 4 can be the same or different. The multi-head spiral structure with equal pitch and spacing makes the temperature distribution on the surface of the heat-conducting roller 2 more uniform. By adjusting the spacing of the multi-head spiral structure, the size of each infusion channel 5 can be flexibly controlled, thereby controlling the flow speed and path of the fluid in the infusion channel 5, so as to meet the heating requirements of different parts of the electrode. By adjusting the pitch of the spiral structure formed by each partition plate 4, the size of each infusion channel 5 can also be controlled, thereby controlling the flow speed and path of the fluid in the infusion channel 5, meeting the heating requirements of different parts of the electrode, so as to achieve the function of local heat preservation. Technicians can make adjustments according to actual needs.
[0050] In one embodiment, the partition plates 4 are arranged in a symmetrical spiral distribution (not shown in the figure). Specifically, there are multiple partition plates 4, and multiple spirally arranged infusion channels 5 are formed between the closed annular cavity 3 and the multiple partition plates 4. The multiple infusion channels 5 form a multi-head spiral structure. One part of the partition plates 4 is symmetrically arranged with another part of the partition plates 4, and the infusion channel 5 formed by one part of the symmetrically arranged partition plates 4 and the closed annular cavity 3 is connected to the infusion channel 5 formed by the other part of the symmetrically arranged partition plates 4 and the closed annular cavity 3. By setting multiple symmetrical and spirally shaped partition plates 4, the heated fluid can also be evenly distributed in the progressively distributed infusion channels 5, so that the surface of the heat-conducting roller 2 is heated evenly.
[0051] Preferably, there are multiple inlets 6 and multiple outlets 7. The multiple inlets 6 are located on the inlet side of the liquid delivery channel 5 and are arranged along the length of the partition plate 4. The multiple outlets 7 are located on the outlet side of the liquid delivery channel 5 and are arranged along the length of the partition plate 4. By setting multiple inlets 6 and multiple outlets 7, in conjunction with the circulating liquid bath system, the flow velocity of the heated fluid in the closed ring cavity 3 can be increased, thereby improving the heat transfer efficiency inside the closed ring cavity 3 and improving the heating efficiency of the heat-conducting roller 2.
[0052] Specifically, such as Figure 5 As shown, the circulating liquid bath system includes a circulating liquid pipe assembly 8, a liquid reservoir (not shown in the figure), and a pump body (not shown in the figure). The circulating liquid pipe assembly 8 is located inside the heat-conducting roller 2 and is connected to the inlet 6 and the outlet 7. The liquid reservoir is connected to the circulating liquid pipe assembly 8 and contains the heated fluid and a heating element (not shown in the figure) for heating the heated fluid. The pump body is connected between the liquid reservoir and the circulating liquid pipe assembly 8. The circulating liquid pipe assembly 8, the liquid reservoir, the pump body, and the closed ring cavity 3 form a complete liquid heating circulation system. After being heated inside the liquid reservoir, the heated fluid is transported from the inlet 6 to the closed ring cavity 3 through the circulating liquid pipe assembly 8 under the action of the pump body to conduct heat to the outer surface of the heat-conducting roller 2, thereby achieving heat conduction on the electrode. After passing through the water supply channel, the heated fluid returns to the circulating liquid pipe assembly 8 from the outlet 7 and then returns to the liquid reservoir, realizing the recycling of the heated fluid and meeting the requirements of energy conservation and emission reduction.
[0053] Furthermore, a liquid slip ring 9 is coaxially provided on the heat-conducting roller 2. The liquid slip ring 9 is connected between the circulating liquid pipe assembly 8 and the liquid reservoir. By setting the liquid slip ring 9, the problem of twisting, entanglement or breakage of the circulating liquid pipe assembly 8 during the rotation of the heat-conducting roller 2 can be avoided, which is suitable for pipeline transportation conditions.
[0054] In addition, such as Figure 1 As shown, the coated electrode drying equipment also includes an air circulation system 10. The air circulation system 10 includes a blower 101, a first ventilation box 102, an exhaust fan 103, and a second ventilation box 104. The blower 101 and the exhaust fan 103 are respectively located outside the housing 1. The first ventilation box 102 is located between the blower 101 and the housing 1, and the second ventilation box 104 is located between the exhaust fan 103 and the housing 1. In the air circulation system 10, the blower 101, in conjunction with the first ventilation box 102, can send outside air into the housing 1 through the ventilation box. The exhaust fan 103, in conjunction with the second ventilation box 104, can exhaust the air inside the housing 1, thereby forming an airflow circulation inside the housing 1. This can remove the liquid vapor generated when the coated material on the electrode is heated, continuously remove the solvent components, reduce the interference of vapor on the electrode inside the housing 1, and thus improve the drying efficiency and heating uniformity of the electrode.
[0055] Furthermore, the first ventilation box 102 is equipped with several heating tubes (not shown in the figure) for heating. During operation, the heating tubes inside the first ventilation box 102 heat the incoming air to form high-temperature hot air. After the high-temperature hot air enters the closed box 1, it can dry the coating surface of the electrode sheet with hot air. That is, heat is transferred from the outer layer to the inner layer of the coating material through non-contact heat conduction. Combined with the contact heat conduction of the heat-conducting roller 2, it can simultaneously heat the outer and inner layers of the coating material on the electrode sheet, thereby improving the drying efficiency and heating uniformity of the electrode sheet.
[0056] Furthermore, a filter screen (not shown in the figure) is provided inside the first ventilation box 102. The filter screen inside the first ventilation box 102 can improve the cleanliness of the gas delivered to the box 1 and reduce the possibility of the electrode being contaminated.
[0057] The implementation principle of the coated electrode drying equipment in this application embodiment is as follows: After the electrode completes the coating process, it enters the box 1 from the feed port and is wound around the heat-conducting roller 2 by the traction of the external unwinding mechanism and the coating mechanism. The heat-conducting roller 2 abuts against and guides the electrode to be output from the discharge port of the box 1. During this process, in the closed annular cavity 3 inside the heat-conducting roller 2, the heated fluid is input from the water inlet 6 into the closed annular cavity 3 under the action of the circulating liquid bath system, and then enters from the inlet side of the liquid delivery channel 5 and exits from the outlet side of the liquid delivery channel 5. Then it is returned to the circulating liquid bath system from the water outlet 7, forming a complete liquid heating cycle. The heated fluid is distributed step by step in the spiral liquid delivery channel 5 to ensure that the heated fluid is evenly distributed in the closed annular cavity 3 inside the heat-conducting roller 2, so that the surface of the heat-conducting roller 2 is evenly heated, and then the heat is evenly transferred to the electrode to complete the electrode drying process.
[0058] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A coated pole piece drying apparatus characterized by, The utility model relates to a kind of heat transfer coating device, including: Box (1), heat conducting roller (2) is rotationally arranged inside the box (1), the box (1) is opened with feed inlet and discharge outlet, after coating, pole piece is fed from the feed inlet and is discharged from the discharge outlet after being arranged on the heat conducting roller (2), the heat conducting roller (2) is used to abut pole piece, the heat conducting roller (2) is provided with closed ring cavity (3) inside; Partition plate (4), the partition plate (4) is arranged in the closed ring cavity (3) and is helically shaped, the closed ring cavity (3) and the partition plate (4) form the helically arranged infusion channel (5) between, the closed ring cavity (3) is opened with water inlet (6) and water outlet (7) inside, the water inlet (6) is located at the inlet side of the infusion channel (5), the water outlet (7) is located at the outlet side of the infusion channel (5); Circulating liquid bath system, for inputting heated fluid to the water inlet (6) and receiving the heated fluid output from the water outlet (7).
2. The coated electrode drying apparatus of claim 1, wherein, The number of the partition plate (4) is multiple, the closed ring cavity (3) and multiple partition plates (4) form multiple helically arranged infusion channels (5) between, multiple infusion channels (5) form multi-start spiral structure, multiple partition plates (4) are distributed equidistantly inside the closed ring cavity (3).
3. The coated electrode drying apparatus of claim 1, wherein, The number of the partition plate is multiple, the closed ring cavity (3) and multiple partition plates (4) form multiple helically arranged infusion channels (5) between, multiple infusion channels (5) form multi-start spiral structure, multiple partition plates are distributed unequidistantly inside the closed ring cavity.
4. The coated electrode drying apparatus of claim 1, wherein, The number of the partition plate (4) is multiple, the closed ring cavity (3) and multiple partition plates (4) form multiple helically arranged infusion channels (5) between, multiple infusion channels (5) form multi-start spiral structure, the pitch of each helically shaped partition plate is same.
5. The coated electrode drying apparatus of claim 1, wherein, The number of the partition plate (4) is multiple, the closed ring cavity (3) and multiple partition plates (4) form multiple helically arranged infusion channels (5) between, multiple infusion channels (5) form multi-start spiral structure, the pitch of each helically shaped partition plate is different.
6. The coated electrode drying apparatus of claim 1, wherein, The number of the partition plate (4) is multiple, the closed ring cavity (3) and multiple partition plates (4) form multiple helically arranged infusion channels (5) between, multiple infusion channels (5) form multi-start spiral structure, part of the partition plate (4) and another part of the partition plate (4) are symmetrically arranged, and the infusion channel (5) formed by part of the partition plate (4) and the closed ring cavity (3) and the infusion channel (5) formed by another part of the partition plate (4) and the closed ring cavity (3) symmetrically arranged are communicated.
7. The coated electrode drying apparatus of claim 1, wherein, The number of the water inlets (6) and the water outlets (7) are both provided with multiple, multiple water inlets (6) are located on the inlet side of the infusion channel (5) and arranged along the length direction of the partition plate (4), and multiple water outlets (7) are located on the outlet side of the infusion channel (5) and arranged along the length direction of the partition plate (4).
8. The coated electrode drying apparatus of claim 1, wherein, The circulating liquid bath system comprises a circulating liquid pipe group (8), a liquid storage device and a pump body, the circulating liquid pipe group (8) is located inside the heat conducting roller (2) and is communicated with the water inlet (6) and the water outlet (7), the liquid storage device is communicated with the circulating liquid pipe group (8), and the liquid storage device is internally provided with a heated fluid and a heating element for heating the heated fluid, and the pump body is communicated between the liquid storage device and the circulating liquid pipe group (8).
9. The coated electrode drying apparatus of claim 8, wherein, The heat conducting roller (2) is coaxially provided with a liquid slip ring (9), and the liquid slip ring (9) is communicated between the circulating liquid pipe group (8) and the liquid storage device.
10. The coated electrode drying apparatus of claim 1, wherein, The coating pole piece drying equipment further comprises a wind circulation system (10), the wind circulation system (10) comprises a blower (101), a first ventilation box (102), an exhaust fan (103) and a second ventilation box (104), the blower (101) and the exhaust fan (103) are respectively arranged outside the box (1), the first ventilation box (102) is arranged between the blower (101) and the box (1), and the second ventilation box (104) is arranged between the exhaust fan (103) and the box (1).
11. The coated electrode drying apparatus of claim 10, wherein, The first ventilation box (102) is internally provided with a plurality of heating pipes for heating.
12. The coated electrode drying apparatus of claim 10, wherein, The first ventilation box (102) is internally provided with a filter screen.