Resistance wire heating far infrared board
By using resistive wire heating far infrared plate during the coating and drying of lithium battery electrodes, the existing drying methods are solved, and uniform temperature control and life extension are achieved, and drying efficiency is improved.
Patent Information
- Application Number
- CN202421768997.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-24
AI Technical Summary
During the coating and drying process of existing lithium battery electrodes, hot air drying has low energy efficiency, short-wave infrared drying temperature is high and control is difficult, which can easily lead to poor drying and short service life of drying devices.
The far-infrared plate is heated by a resistive wire. The heat generated by setting a resistive wire on the radiating base plate, combining the pressure plate and the heat insulation plate structure to form a controllable heating area, and a pressure relief hole is set in the base plate to facilitate the return channel of the air, achieving uniform temperature control and extended life.
It achieves more efficient drying effect, extends temperature uniformity and lifespan, and is suitable for hot air and short-wave infrared drying methods, improving drying efficiency and temperature regulation capabilities.
Smart Images
Figure CN223083190U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating plates, in particular to a far-infrared plate heated by a resistance wire. Background Art
[0002] During the preparation process of lithium batteries, after the electrode slurry is coated, it needs to enter an oven for drying. The existing drying methods are mainly hot air drying and short-wave infrared drying. The hot air drying has low energy efficiency, while the short-wave infrared drying has high energy efficiency, high drying temperature, and poor power control, which easily leads to poor drying and has the problem of short service life of drying devices. Content of the Utility Model
[0003] In order to overcome the deficiencies of the prior art, the utility model provides a far-infrared plate heated by a resistance wire, which uses a resistance wire for heating, making the heating area controllable, the temperature uniform, and the service life longer.
[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:
[0005] A far-infrared plate heated by a resistance wire includes a radiation bottom plate, on which a resistance wire is provided. Above the resistance wire, there is a pressing plate for pressing the resistance wire; above the pressing plate, there is a heat insulation plate; at the end of the radiation bottom plate, there is an outgoing line terminal, which is connected to both ends of the resistance wire; a pressure relief hole is opened in the middle of the radiation bottom plate, the pressing plate, and the heat insulation plate, and the pressure relief hole is strip-shaped.
[0006] As a further improvement of the above technical solution, a receiving groove is opened on the surface of the radiation bottom plate facing the pressing plate, and the resistance wire is arranged in the receiving groove.
[0007] As a further improvement of the above technical solution, the receiving groove is an annular groove, and the inner circle of the annular groove forms the pressure relief hole.
[0008] As a further improvement of the above technical solution, the resistance wire is arranged in an S shape.
[0009] As a further improvement of the above technical solution, a convex portion is provided on the side of the pressing plate facing the radiation bottom plate, and the shape of the convex portion corresponds to the shape of the receiving groove, and the convex portion is embedded in the receiving groove.
[0010] As a further improvement of the above technical solution, a first accommodation groove and a second accommodation groove are respectively provided on the opposite sides of the radiation bottom plate and the pressing plate. The first accommodation groove is communicated with one side edge of the receiving groove, and the first accommodation groove and the second accommodation groove cooperate to form a terminal hole, and the outgoing line terminal is clamped in the terminal hole.
[0011] As a further improvement of the above technical solution, the radiation bottom plate includes a radiation surface, the radiation surface is arranged on the side of the radiation bottom plate away from the resistance wire, and a plurality of uniformly distributed radiation grooves are arranged on the radiation surface.
[0012] As a further improvement of the above technical solution, the surface of the radiation surface is coated with a graphene coating.
[0013] As a further improvement of the above technical solution, the material of the radiation bottom plate is aluminum alloy, and the whole radiation bottom plate is subjected to hard anodizing treatment.
[0014] As a further improvement of the above technical solution, an insulating coating is arranged on the side of the radiation bottom plate close to the resistance wire.
[0015] The beneficial effects of the present utility model are as follows: By arranging a resistance wire in the radiation bottom plate for heating, a better heating effect can be achieved, and the heating area can be controlled and adjusted according to the distribution of the resistance wire; the heating temperature of the resistance wire is more uniform and the service life is long. Moreover, a pressure relief hole is also provided, which is convenient for leaving a heating return channel for the wind in the oven, facilitating the wind return in the oven for reheating. It is convenient to use two drying methods, hot air drying and radio wave heating, to dry the polar plate coating after coating, which can accelerate the drying efficiency, ensure the drying effect, and further increase the heating temperature, facilitating temperature control to ensure uniform heating. Description of the Drawings
[0016] The following further describes the present utility model in conjunction with the drawings and embodiments.
[0017] Figure 1 is the assembly schematic diagram of the present utility model Figure 1 ;
[0018] Figure 2 is the explosion schematic diagram of the present utility model;
[0019] Figure 3 is the assembly schematic diagram of the present utility model Figure 2 ;
[0020] Figure 4 is Figure 2 the structural schematic diagram of another perspective of the middle pressing plate;
[0021] Figure 5 is Figure 2 the cross-sectional view of the middle radiation bottom plate;
[0022] Figure 6 is Figure 3 the enlarged schematic diagram at A in;
[0023] Figure 7 is Figure 5 the enlarged schematic diagram at B in.
[0024] Explanation of the reference numerals: 1-radiation bottom plate; 11-accommodating groove; 12-connecting block; 13-radiation surface; 14-ceramic pressure head; 15-first accommodation groove; 131-radiation groove; 132-graphene coating; 133-insulating coating; 2-resistance wire; 3-pressing plate; 31-protrusion; 32-second accommodation groove; 33-first through hole; 34-second through hole; 4-thermal insulation board; 5-outlet terminal; 6-pressure relief hole. DETAILED DESCRIPTION
[0025] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.
[0026] Please refer to Figures 1 to 3 The utility model provides a resistance wire heating far-infrared plate, including a radiation base plate 1 for radiating heat outward, and a resistance wire 2 is arranged on the radiation base plate 1 for generating heat when powered. The material of the radiation base plate 1 is aluminum alloy, and the whole is hard anodized. Moreover, an insulating coating 133 is arranged on the side of the radiation base plate 1 close to the resistance wire 2. Specifically, the insulating coating 133 is a special nano-silicon oxide crystal insulating coating to form a double-layer insulating layer to ensure that the resistance wire 2 can play an insulating role when in contact with the radiation base plate 1, and ensure that the resistance wire 2 can work normally. The use of the resistance wire 2 for heating has the characteristics of controllable heating area, uniform temperature, and long service life. A pressing plate 3 is arranged above the resistance wire 2, and the pressing plate 3 is used to press the resistance wire 2 tightly so that the resistance wire 2 and the radiation base plate 1 are in full contact, which can improve the heat conduction efficiency of the resistance wire 2 to the radiation base plate 1.
[0027] Furthermore, a heat insulation board 4 is provided above the pressing plate 3 to isolate heat and improve the energy utilization efficiency of the resistance wire 2 in the radiation bottom plate 1. An outlet terminal 5 is provided at the end of the radiation bottom plate 1, and the outlet terminal 5 is connected to the resistance wire 2. The outlet terminal 5 serves as an interface for convenient electrical connection.
[0028] The drying methods after the electrode sheet is coated with slurry are mainly hot air type and short-wave infrared type. Among them, a pressure relief hole 6 is provided in the middle of the radiation bottom plate 1, the pressing plate 3 and the heat insulation plate 4, and the pressure relief hole 6 is a long strip hole. The far-infrared plate heated by the resistance wire 2 is installed between two air nozzles of the oven, and a pressure relief hole 6 is provided in the middle as a return channel for air, which is convenient for the air to continue to flow back into the heating package for reheating.
[0029] Furthermore, a plurality of connecting blocks 12 are provided in the radiation bottom plate 1. The connecting blocks 12 are provided with first threaded holes. A plurality of first through holes 33 are provided in the pressing plate 3. The positions of the connecting blocks 12 correspond to the positions of the first through holes 33. The connecting blocks 12 are embedded in the first through holes 33. After the screw passes through the heat insulation plate 4, it is threadedly connected to the first threaded hole. Thus, the heat insulation plate 4 can be fixed. At the same time, the pressing plate 3 can be pressed against the radiation bottom plate 1 through the heat insulation plate 4, so that the pressing plate 3 presses the resistance wire 2 tightly, and the resistance wire 2 is in full contact with the radiation bottom plate 1, improving the heat conduction efficiency.
[0030] Furthermore, a ceramic pressing head 14 is also provided on the radiation bottom plate 1. The ceramic pressing head is used to press both ends of the resistance wire 2 against the radiation bottom plate 1. The ceramic pressing head 14 is provided with a second threaded hole. The pressing plate 2 is provided with a second through hole 34. The position of the ceramic pressing head 14 corresponds to the position of the second through hole 34. The ceramic pressing head 14 is embedded in the second through hole 34. The screw is threadedly connected to the second threaded hole and fixed on the radiation bottom plate 1. Thus, both ends of the resistance wire 2 can be pressed tightly, which is convenient for connecting both ends of the resistance wire 2 to the outgoing line terminal 5.
[0031] Furthermore, in order to stably place the resistance wire 2, a receiving groove 11 is provided in the radiation bottom plate 1. The receiving groove 11 is provided on the side facing the pressing plate 3. The resistance wire 2 is placed in the receiving groove 11. The receiving groove 11 is provided with a border at the edge of the radiation bottom plate 1, including a border at the pressure relief hole 6. The receiving groove 11 forms an annular groove in the radiation bottom plate 1. The border can frame the resistance wire 2 to prevent the resistance wire 2 from moving.
[0032] The resistance wire 2 is arranged in the receiving groove 11, and the resistance wire 2 is arranged in an S shape, bypassing the pressure relief hole 6 and surrounding in the annular groove, and the starting point and the ending point of the resistance wire 2 are located at the same opening. The resistance wire 2 is distributed in an S shape, so that it covers a larger range of the radiation bottom plate 1, increasing the heating area and ensuring the heating quality. In the embodiment of the present invention, the S-shaped distribution of the resistance wire 2 is folded along the short side of the receiving groove 11. As another embodiment, the resistance wire 2 can be folded along the long side or folded in sections, so as to better improve the heating efficiency and increase the heating area.
[0033] The receiving groove 11 where the starting and ending ends of the resistance wire 2 are located has a notch on the corresponding outer peripheral frame. Through the notch in the frame, both ends of the resistance wire 2 can extend out of the receiving groove 11 and contact and cooperate with the outgoing line terminal 5 to conduct electricity.
[0034] Furthermore, an outgoing line terminal 5 is provided at the port of the resistance wire 2. The outgoing line terminal 5 is arranged at the same end of the radiation bottom plate 1 where the port of the resistance wire 2 is located. The outgoing line terminal 5 is connected to both ends of the resistance wire 2 and cooperates with the resistance wire 2 to make the resistance wire 2 conduct electricity. And there are two sections of the resistance wire 2 remaining outside at the outgoing line terminal 5 as the wiring points, which is convenient for wiring cooperation and avoids disconnection when the resistance wire 2 is energized.
[0035] Refer to Figure 2 and Figure 4 In order to cooperate with the receiving groove 11 in the radiation bottom plate 1, a convex portion 31 is provided on the side of the pressing plate 3 facing the radiation bottom plate 1, so that the edge of the pressing plate 3 is a stepped step. The shape of the convex portion 31 corresponds to the shape of the annular groove. The convex portion 31 is embedded in the annular groove. At the same time, the edge of the pressing plate 3 and the frame of the edge of the radiation bottom plate 1 cooperate with each other, so that the pressing plate 3 can be stably clamped in the radiation bottom plate 1 and avoid moving when it presses the resistance wire 2, ensuring the effect of pressing the resistance wire 2.
[0036] And a pressure relief hole 6 is also provided in the pressing plate 3. The pressure relief hole 6 in the pressing plate 3 is the same size as the pressure relief hole 6 in the radiation bottom plate 1 and is communicated at the same position. The pressure relief hole 6 in the radiation bottom plate 1 is provided with a frame, and the frame can further frame and clamp the convex portion 31 in the pressing plate 3, so that the pressing plate 3 is completely clamped in the receiving groove 11 and presses the resistance wire 2 in the receiving groove 11.
[0037] Furthermore, when the pressing plate 3 needs to press the resistance wire 2 and does not need to press the outgoing line terminal 5, and the outgoing line terminal is arranged below the pressing plate 3. In order to ensure the installation of the outgoing line terminal 5, a first accommodating groove 15 and a second accommodating groove 32 are respectively provided on the opposite sides of the radiation bottom plate 1 and the pressing plate 3. The first accommodating groove 15 is communicated with one side edge of the receiving groove 11 to facilitate the end of the resistance wire 2 to extend out. When the pressing plate 3 and the radiation bottom plate 1 are pressed together, the first accommodating groove 15 and the second accommodating groove 32 cooperate to form a terminal hole, and the outgoing line terminal 5 is clamped in the terminal hole. This makes the outgoing line terminal 5 stable between the radiation bottom plate 1 and the pressing plate 3 and will not easily shift, ensuring the stability of the connection and power conduction of the outgoing line terminal 5 and the power-on effect of the resistance wire 2.
[0038] In order to ensure high-quality transfer efficiency, a layer of heat insulation board 4 is provided above the pressing plate 3, which can enable heat transfer on the radiation bottom plate 1. The heat insulation board 4 uses materials with low thermal conductivity such as nano-aerogel and rock wool board, which can better isolate heat and ensure that most of the heat is transferred at the radiation bottom plate 1. Moreover, the heat insulation board 4 is arranged at the pressing plate 3, and its shape and size are the same as those of the pressing plate 3, and pressure relief holes 6 are also provided, which is convenient for the backflow of air, so that the far-infrared board heated by the resistance wire 2 of the present utility model can be arranged and used at the air nozzle in the oven, which is convenient for the further backflow heating of air.
[0039] Please refer to Figure 3 and Figure 6 , the radiation bottom plate 1 includes a radiation surface 13, and the radiation surface 13 is arranged on the side of the radiation bottom plate 1 away from the resistance wire 2, and the radiation surface 13 is used for transmitting radiation energy to the outside. Among them, a plurality of uniformly distributed radiation grooves 131 are provided on the radiation surface 13, and the radiation grooves 131 include transverse grooves and vertical grooves, and the transverse grooves and the vertical grooves are perpendicular to each other and are uniformly distributed on the radiation surface 13.
[0040] Specifically, the radiation grooves 131 are formed by knurling.
[0041] By providing a plurality of radiation grooves 131, the radiation surface 13 can increase the effective area of radiation, thereby increasing the scattering of radiation energy, making the energy more evenly distributed, improving the heating efficiency, and reducing the waste of energy.
[0042] Refer to Figure 7 , further, the surface of the radiation surface 13 is coated with a graphene coating 132, which can further improve the radiation heat conduction efficiency on the radiation bottom plate 1 and ensure the effect of heating and drying the pole piece. Among them, in terms of position, the graphene coating 132 and the insulating coating 133 are respectively arranged on the front and back of the radiation bottom plate 1.
[0043] For the far-infrared board heated by the resistance wire 2 of the present utility model, by providing the radiation bottom plate 1 and arranging the resistance wire 2 in the radiation bottom plate 1 to generate heat, a better heating effect can be achieved, and the heating area can be controlled and adjusted according to the distribution of the resistance wire 2; the heating temperature of the resistance wire 2 is more uniform and the service life is long. Moreover, for the far-infrared board heated by the resistance wire 2 of the present utility model, a pressure relief hole 6 is also provided, which is convenient for leaving a heating backflow channel for air in the oven, and is convenient for the backflow of the air in the oven for further heating. It is convenient to dry the pole piece coating by two methods of hot air drying and radio wave heating, which can accelerate the drying efficiency, ensure the drying effect, and further increase the heating temperature, and is convenient for temperature control to ensure uniform heating.
[0044] The above is a specific description of the preferred embodiment of the present utility model. However, the present utility model is not limited to the described embodiment. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present utility model. These equivalent deformations or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A far-infrared panel with a heating resistance wire, characterized in that, It includes a radiation bottom plate, on which a resistance wire is provided. Above the resistance wire, there is a pressing plate for pressing the resistance wire tightly; above the pressing plate, there is a heat insulation plate; at the end of the radiation bottom plate, there are outgoing line terminals connected to both ends of the resistance wire; in the middle of the radiation bottom plate, the pressing plate and the heat insulation plate, there are pressure relief holes which are strip-shaped.
2. The far-infrared panel with a heating resistance wire according to claim 1, wherein, On the side of the radiation bottom plate facing the pressing plate, there is a receiving groove, and the resistance wire is arranged in the receiving groove.
3. The far-infrared panel with heating by resistance wire according to claim 2, characterized in that, The receiving groove is an annular groove, and the inner circle of the annular groove forms the pressure relief hole.
4. The far-infrared panel with heating by resistance wire according to claim 2, wherein, The resistance wire is arranged in an S shape.
5. The far-infrared panel with heat generated by a resistance wire according to claim 2 or 3, characterized in that, On the side of the pressing plate facing the radiation bottom plate, there is a protruding part, and the shape of the protruding part corresponds to the shape of the receiving groove, and the protruding part is embedded in the receiving groove.
6. The far-infrared panel with heating by resistance wire according to claim 2, wherein On the opposite sides of the radiation bottom plate and the pressing plate, there are a first accommodating groove and a second accommodating groove respectively. The first accommodating groove communicates with one side edge of the receiving groove, and the first accommodating groove and the second accommodating groove cooperate to form a terminal hole, and the outgoing line terminal is clamped in the terminal hole.
7. The far-infrared panel with heating by resistance wire according to claim 1, characterized in that, The radiation bottom plate includes a radiation surface arranged on the side of the radiation bottom plate away from the resistance wire, and there are multiple uniformly distributed radiation grooves on the radiation surface.
8. The far-infrared panel with resistance wire heating according to claim 7, characterized in that The surface of the radiation surface is coated with a graphene coating.
9. The far-infrared panel with heating by resistance wire according to claim 7, characterized in that, The material of the radiation bottom plate is aluminum alloy, and the radiation bottom plate is integrally treated by hard anodization.
10. The far-infrared panel with heating by resistance wire according to claim 7, characterized in that, On the side of the radiation bottom plate close to the resistance wire, there is an insulating coating.