Elastic sheet type conductive air knife and drying equipment

Abstract

The utility model relates to the technical field of lithium battery coating pole piece drying, and discloses an elastic piece type conductive air knife and drying equipment, the elastic piece type conductive air knife is applied to the drying equipment for use, an infrared heating plate is installed on the air knife, after the infrared heating plate is externally connected with power through a conductive elastic piece, heat is radiated, and a coating pole piece of a lithium battery is directly baked; the problem of energy waste caused by indirect baking of the coated pole piece by heating air flow is avoided, energy loss is reduced, and the resource utilization rate is increased.

Description

Technical Field

[0001] The present application relates to the technical field of drying coated pole pieces of lithium batteries, and in particular to a spring-type conductive air knife and drying equipment. Background Art

[0002] In the manufacturing process of lithium batteries, the coated electrodes need to be dried. Currently, the equipment used to dry the coated electrodes often uses heating methods such as oil heating or electric heating packs to heat the air flow introduced from the outside. The heated air flow indirectly bakes the coated electrodes. The entire heating process has a large energy loss, resulting in energy waste. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a spring-type conductive air knife and drying equipment, aiming to solve the technical problem of energy waste caused by indirect baking of coated pole pieces through heated air flow.

[0004] To achieve the above purpose, the present application proposes a spring-type conductive air knife for baking coated pole pieces, the air knife comprising:

[0005] An installation body, wherein an air inlet is provided at the bottom end of the installation body, and air outlets are provided at both sides of the top end of the installation body, and the air inlet is connected to the two air outlets;

[0006] An infrared heating plate, which is installed on the installation body and located between the two air outlets; the top surface of the infrared heating plate is a heating surface, and the bottom surface of the infrared heating plate is an electrical terminal;

[0007] A power connection component is installed on the installation body and is located on the bottom surface of the infrared heating plate; the power connection component is used for external power supply; the power connection component is provided with a conductive spring sheet with one end extending outward, and the end of the conductive spring sheet extending outward elastically abuts against and is electrically connected to the power connection end.

[0008] Optionally, the wind knife comprises:

[0009] One or more infrared heating panels;

[0010] Wherein, the plurality of infrared heating panels are arranged successively along a direction perpendicular to a line connecting the two air outlets.

[0011] Optionally, the power connection component includes:

[0012] Two power connection bars, each of which is provided with a plurality of conductive springs;

[0013] The two power connection bars are respectively located on both sides of the infrared heating plate close to the two air outlets; the two power connection bars are elastically pressed against and electrically connected to the power connection ends on both sides of the bottom surface of the infrared heating plate through the conductive spring sheets.

[0014] Optionally, the installation body includes:

[0015] A first mounting seat, wherein the bottom end of the first mounting seat is open; the two air outlets are located on both sides of the top end of the first mounting seat;

[0016] A second mounting seat, the top end of which is inserted into the bottom opening of the first mounting seat and is detachably connected to the first mounting seat; the air inlet is located at the bottom end of the second mounting seat.

[0017] Optionally, the first mounting seat or the second mounting seat is provided with a waist hole extending along the height direction, and the second mounting seat or the first mounting seat is detachably connected to the waist hole; the connection position of the second mounting seat or the first mounting seat is moved along the waist hole to adjust the relative height of the air outlet and the air inlet.

[0018] Optionally, a first air uniforming plate is provided at the top of the second mounting seat, and a plurality of first air uniforming holes are evenly arranged on the first air uniforming plate, and the air inlet is connected to the air outlet through the first air uniforming holes.

[0019] Optionally, the first mounting seat is provided with a second air uniforming plate, the second air uniforming plate is located at the bottom end of the air outlet nozzle, the second air uniforming plate is evenly arranged with a plurality of second air uniforming holes, and the air inlet is connected to the air outlet nozzle through the second air uniforming holes.

[0020] Optionally, the wind knife further comprises:

[0021] A mica gasket is installed on the installation body and is located on the bottom surface of the power connection component.

[0022] Optionally, the wind knife further comprises:

[0023] A first stopper, wherein the first stopper is L-shaped, connected to the installation body, and located on a side opposite to the two air outlets; the first stopper abuts against the top surface of the infrared heating plate; or,

[0024] A second limit member, the second limit member is connected to the installation body and is located on a side opposite to the two air outlets, the second limit member is abutted against the bottom surface of the power connection component, and a protrusion is protruding from the top surface of the second limit member, and the protrusion is located on a side of the power connection component away from the air outlet.

[0025] Another technical solution proposed in the present application is as follows: A drying device comprises: the spring-type conductive air knife as described above, wherein a plurality of the air knives are staggeredly distributed in the drying device.

[0026] The present application provides a shrapnel-type conductive air knife and drying equipment. The shrapnel-type conductive air knife is used in the drying equipment. An infrared heating plate is installed on the air knife. After the infrared heating plate is powered externally by the conductive shrapnel, it radiates heat to directly bake the coated pole pieces of the lithium battery, thereby avoiding the energy waste problem caused by indirectly baking the coated pole pieces by heating the air flow, reducing energy loss, and helping to improve resource utilization.

[0027] Air outlets are respectively provided on both sides of the top of the installation body, and an air inlet is provided at the bottom. The air inlet is connected to the two air outlets, so that air flows into the installation body from the air inlet and flows out from the air outlet to blow toward the coated electrode to disperse the solvent and moisture on the coated electrode and improve the baking efficiency; the wind force acts on the coated electrode to form a suspension effect on the coated electrode.

[0028] When the infrared heating plate is placed on the power connection component, the conductive spring piece elastically abuts against the power connection terminal on the bottom surface of the infrared heating plate, the power connection component is externally powered, and the conductive spring piece is electrically connected to the power connection terminal, so as to power the infrared heating plate and ensure the baking effect of the infrared heating plate on the coated electrode. At the same time, the infrared heating plate can be powered externally through the power connection component by simply placing the infrared heating plate on the power connection component, which is also convenient for the installation of the infrared heating plate. The power connection component elastically abuts against the power connection terminal of the infrared heating plate through the conductive spring piece, which is conducive to ensuring the reliability of the electrical connection between the infrared heating plate and the power connection component. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of the shrapnel-type conductive wind knife provided in this application;

[0031] Figure 2 A schematic top view of the shrapnel-type conductive wind knife provided in the present application;

[0032] Figure 3 A schematic diagram of the main view of the shrapnel-type conductive air knife provided in the present application;

[0033] Figure 4 This application Figure 3 A schematic cross-sectional view along the Ⅰ-Ⅰ direction;

[0034] Figure 5 A schematic diagram of the connection structure between the power connection assembly and the infrared heating plate provided in this application;

[0035] Figure 6 A cross-sectional schematic diagram of the connection structure between the power connection assembly and the infrared heating plate provided in the present application;

[0036] Figure 7 For this application Figure 6 A magnified schematic diagram of the middle part;

[0037] Figure 8 A schematic diagram of the three-dimensional structure of the second mounting base provided in this application;

[0038] Fig. 9 A schematic top view of a second mounting base provided in the present application;

[0039] Fig.10 A schematic front view of a second mounting base provided in the present application;

[0040] Fig.11 A right side schematic diagram of a second mounting base provided in the present application;

[0041] Fig.12 This application Fig.10 Schematic diagram of the cross section along the II-II direction;

[0042] Fig.13 A schematic diagram of the three-dimensional structure of the first mounting base provided in this application;

[0043] Fig.14 A schematic top view of a first mounting base provided in the present application;

[0044] Fig.15 A bottom view schematic diagram of a first mounting base provided in the present application;

[0045] Fig.16 A schematic front view of a first mounting base provided in the present application;

[0046] Fig.17 A left side schematic diagram of a first mounting base provided in the present application;

[0047] Fig.18 This application Fig.16 A schematic cross-sectional view along the III-III direction;

[0048] Fig.19 This is a right side schematic view of the spring-type conductive wind knife provided in this application.

[0049] Description of Figure Numbers:

[0050] 10. Wind knife;

[0051] 11. Install the main body;

[0052] 111. air inlet; 112. air outlet;

[0053] 113. A first mounting seat;

[0054] 1131, second air uniforming plate; 1132, second air uniforming hole;

[0055] 114. Second mounting seat;

[0056] 1141. a first air uniforming plate; 1142. a first air uniforming hole;

[0057] 115, waist hole; 116, fixing hole; 117, latch; 118, buckle; 119, handle; 12, infrared heating plate;

[0058] 121, heating surface; 122, power connection terminal;

[0059] 13. Connect the power components;

[0060] 131. Conductive spring; 132. Silver-plated bump; 133. Power strip; 134. High-temperature wiring; 14. Sealing strip; 15. Mica gasket; 16. First stopper;

[0061] 17. Second limiter;

[0062] 171. Bulge. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0064] The present application aims to solve the technical problem of energy waste caused by indirect baking of coated electrodes through heated air flow, and provides a spring-type conductive wind knife and drying equipment. The spring-type conductive wind knife is used in the drying equipment. The infrared heating plate installed on the wind knife is powered by an external conductive spring, radiates heat, and directly bakes the coated electrodes of the lithium battery, thereby avoiding the energy waste problem caused by indirect baking of the coated electrodes through heated air flow, reducing energy loss, and being conducive to improving resource utilization. For details, please refer to the following embodiments.

[0065] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4In the first embodiment of the present application, a spring-type conductive air knife 10 is provided for baking coated electrodes, the air knife 10 comprising a mounting body 11, an infrared heating plate 12 and an electrical connection component 13; an air inlet 111 is provided at the bottom end of the mounting body 11, and air outlets 112 are provided on both sides of the top end of the mounting body 11, the air inlet 111 is connected to the two air outlets 112; the infrared heating plate 12 is mounted on the mounting body 11 and is located between the two air outlets 112; the top surface of the infrared heating plate 12 is a heating surface 121, and the bottom surface of the infrared heating plate 12 is an electrical connection terminal 122; the electrical connection component 13 is mounted on the mounting body 11 and is located on the bottom surface of the infrared heating plate 12; the electrical connection component 13 is used for external power supply; the electrical connection component 13 is provided with a conductive spring 131 extending outward at one end, and the end of the conductive spring 131 extending outward elastically abuts against and is electrically connected to the electrical connection terminal 122.

[0066] It can be understood that the shrapnel-type conductive wind knife 10 provided in the present application is used in a drying device. An infrared heating plate 12 is installed on the wind knife 10. After the infrared heating plate 12 is powered externally by the conductive shrapnel 131, it radiates heat and directly bakes the coated electrode of the lithium battery, thereby avoiding the energy waste problem caused by indirectly baking the coated electrode through the heated air flow, reducing energy loss, and being conducive to improving resource utilization. The installation body 11 is installed in the drying equipment and is used to fix the infrared heating plate 12. Specifically, the top surface of the installation body 11 is provided with a mounting groove, and the infrared heating plate 12 is fixed in the mounting groove. Air outlet nozzles 112 are respectively provided on both sides of the top of the installation body 11. The blowing nozzle is in the shape of a slit. The air outlet nozzle 112 is usually facing the coated electrode. The bottom end of the installation body 11 is provided with an air inlet 111, and the air inlet 111 is connected to the two air outlet nozzles 112. The bottom end of the installation body 11 is provided with a sealing strip 14, which is arranged around the air inlet 111, and is used to improve the sealing of the air inlet 111 when the installation body 11 is installed in the drying equipment to prevent air leakage. When the installation body 11 is installed in the drying equipment for use, the air inlet 111 is connected to the air inlet on the drying equipment, so that the airflow enters the installation body 11 from the air inlet 111, and flows out from the air outlet 112, blowing toward the coated electrode to blow away the solvent and moisture on the coated electrode, thereby improving the baking efficiency; the wind acts on the coated electrode to form a suspension effect on the coated electrode. The top surface of the infrared heating plate 12 is the heating surface 121. When the wind knife 10 bakes the coated electrode, the heating surface 121 faces the coated electrode. The wind knife 10 is also provided with an air outlet 112 and an infrared heating plate 12. The infrared heating plate 12 is located between the two air outlets 112. The airflow blown out by the air outlet 112 has a diffusion effect on the radiant heat of the infrared heating plate 12, which is beneficial to the uniform and rapid diffusion of heat, promotes the rapid drying of the coated electrode, and improves the baking efficiency. The air outlet 112 can be at a certain inclination angle relative to the coated electrode. The two air outlets 112 are symmetrically distributed relative to the coated electrode, and the two air outlets 112 are inclined to the middle position, so that the airflow blown out by the two air outlets 112 acts evenly on the coated electrode, which is beneficial to keep the coated electrode stable and avoid the coated electrode from deviating from the infrared heating plate 12, thereby ensuring the baking effect of the infrared heating plate 12.The power connection component 13 is installed on the installation body 11 and is located on the bottom surface of the infrared heating plate 12, and has a supporting function for the infrared heating plate 12; the bottom surface of the infrared heating plate 12 is provided with a power connection terminal 122 for powering on; the power connection component 13 is provided with a conductive spring 131, one end of the conductive spring 131 extends outward away from the conductive component, and is inclined relative to the top surface of the power connection component 13, so that the conductive spring 131 has elasticity, and the other end of the conductive spring 131 is connected to the conductive component; when the infrared heating plate 12 is placed on the power connection component 13, the conductive spring 131 elastically abuts against the infrared heating plate 12. The power connection terminal 122 on the bottom surface of the external heating plate 12, the power connection component 13 is externally powered, and the conductive spring piece 131 is electrically connected to the power connection terminal 122, so as to realize power supply to the infrared heating plate 12 and ensure the baking effect of the infrared heating plate 12 on the coated electrode; at the same time, the infrared heating plate 12 only needs to be placed on the power connection component 13 to be externally powered through the power connection component 13, which is also convenient for the installation of the infrared heating plate 12; the power connection component 13 elastically abuts against the power connection terminal 122 of the infrared heating plate 12 through the conductive spring piece 131, which is conducive to ensuring the reliability of the electrical connection between the infrared heating plate 12 and the power connection component 13.

[0067] The traditional wind knife only has the function of blowing and suspending. The wind knife 10 provided in this application integrates the functions of blowing and suspending and infrared heating. No additional installation space for the infrared heating plate 12 is required, which is conducive to reducing the cost of equipment materials and reducing space occupancy. This application does not limit the number of infrared heating plates 12 and conductive springs 131. Multiple infrared heating plates 12 and conductive springs 131 can be set, so that multiple infrared heating plates 12 can be electrically connected through multiple conductive springs 131 of the power connection component 13, so that multiple infrared heating plates 12 can be powered by the same power supply, reducing wiring and reducing assembly difficulty. The infrared heating plate 12 generates infrared rays after power is turned on, radiates heat, and bakes the coated electrode; infrared radiation is divided into three bands: near (short wave) infrared radiation (wavelength ≤ 2μm), medium (medium wave) infrared radiation (wavelength 2μm~4μm) and far (long wave) infrared radiation (wavelength> 4μm), which can be selected according to actual needs.

[0068] Please continue reading Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments, the wind knife 10 includes one or more infrared heating plates 12; wherein the plurality of infrared heating plates 12 are arranged successively along a direction perpendicular to a line connecting the two air outlets 112.

[0069] It can be understood that the wind knife 10 can use one or more infrared heating plates 12 as needed. For example, when the baking area is small, one infrared heating plate 12 can meet the baking area requirement. When the baking area is large, multiple infrared heating plates 12 can be spliced ​​together to meet the baking area requirement. Multiple infrared heating plates 12 are arranged in sequence along a direction perpendicular to the connection direction of the two air outlets 112, that is, multiple infrared heating plates 12 are spliced ​​together one by one, so as to realize direct baking of the coated electrodes of the lithium battery. The power connection ends 122 of the multiple infrared heating plates 12 can be electrically connected to the conductive spring pieces 131 of the same power connection component 13, so as to realize the same power supply, reduce wiring, and reduce the difficulty of assembly.

[0070] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 In some embodiments, the power connection component 13 includes two power connection bars 133, each of which is provided with a plurality of conductive spring sheets 131; the two power connection bars 133 are respectively located on both sides of the infrared heating plate 12 close to the two air outlets 112; the two power connection bars 133 are elastically abutted against and electrically connected to the power connection ends 122 on both sides of the bottom surface of the infrared heating plate 12 through the conductive spring sheets 131.

[0071] It can be understood that two power connection bars 133 are used to electrically connect all the infrared heating plates 12, so that the spring-type conductive wind knife 10 only needs to lead two wires to externally power all the infrared heating plates 12, reducing wiring and reducing the difficulty of assembly; each power connection bar 133 is provided with multiple conductive springs 131, which can electrically connect multiple infrared heating plates 12 at the same time, and the two power connection bars 133 are respectively located on both sides of the infrared heating plate 12 close to the two air outlets 112, and the two power connection bars 133 are elastically abutted against and electrically connected to the power connection terminals 122 on both sides of the bottom surface of the infrared heating plate 12 through the conductive springs 131, which can stably support multiple infrared heating plates 12 and realize simultaneous power connection of multiple infrared heating plates 12, and the two power connection bars 133 can be externally connected to the positive and negative electrodes (or external high-temperature wiring 134-live wire and neutral wire) respectively to ensure the power supply to the infrared heating plate 12 and realize the baking effect on the coated electrode. The mounting body 11 may be provided with a wire outlet hole to facilitate the introduction of the high temperature wire 134 into the wire outlet hole to electrically connect the two power bars 133. A silver-plated bump 132 may be provided at one end of the conductive spring sheet 131 extending away from the conductive bar, and the silver-plated bump 132 is riveted and fixed to the conductive spring sheet 131, which is conducive to enhancing the conductivity of the infrared heating plate 12 and the power connection component 13.

[0072] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 8, Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 , Fig.17 and Fig.18 In some embodiments, the mounting body 11 includes a first mounting seat 113 and a second mounting seat 114; the bottom end of the first mounting seat 113 is opened; the two air outlets 112 are located on both sides of the top of the first mounting seat 113; the top of the second mounting seat 114 is inserted into the bottom end opening of the first mounting seat 113, and is detachably connected to the first mounting seat 113; the air inlet 111 is located at the bottom end of the second mounting seat 114.

[0073] It can be understood that the installation body 11 is split into a first installation seat 113 and a second installation seat 114 to facilitate production and manufacturing; the second installation seat 114 is detachably connected to the first installation seat 113 to facilitate assembly; the bottom end of the second installation seat 114 is installed at the air inlet of the drying equipment, so that the air inlet is connected to the air inlet 111; the top of the first installation seat 113 is provided with two air outlet nozzles 112, which have a suspension effect on the coated electrode, and can blow away the solvent and moisture on the coated electrode, thereby improving the baking efficiency.

[0074] Please continue to refer to Figure 1 , Figure 3 , Figure 4 , Figure 8 and Fig.13 In some embodiments, the first mounting seat 113 or the second mounting seat 114 is provided with a waist hole 115 extending along the height direction, and the second mounting seat 114 or the first mounting seat 113 is detachably connected to the waist hole 115; the connection position of the second mounting seat 114 or the first mounting seat 113 is moved along the waist hole 115 to adjust the relative height of the air outlet 112 and the air inlet 111.

[0075] It can be understood that the first mounting seat 113 and the second mounting seat 114 are detachably fixed together through the waist hole 115; the waist hole 115 is specifically located on the first mounting seat 113 or the second mounting seat 114, preferably on the first mounting seat 113. Since the top of the second mounting seat 114 is inserted into the bottom opening of the first mounting seat 113, the waist hole 115 is located on the first mounting seat 113, which is convenient for the user to directly observe during installation; when the waist hole 115 is located on the first mounting seat 113 or the second mounting seat 114, a fixing hole 116 is provided on the second mounting seat 114 or the first mounting seat 113, and the first mounting seat 113 and the second mounting seat 114 are detachably connected through the waist hole 115 and the fixing hole 116. The connection method can adopt a bolt or a snap-on structure, which is convenient for disassembly and assembly and convenient for adjusting the connection position. The waist hole 115 extends in the height direction, and the connection position of the second mounting seat 114 or the first mounting seat 113 can be moved along the waist hole 115, that is, the first mounting seat 113 can adjust the height relative to the second mounting seat 114, so as to adjust the relative height of the air outlet 112 on the first mounting seat 113, the infrared heating plate 12 and the air inlet 111 on the second mounting seat 114. When the second mounting seat 114 is installed in the drying equipment, the installation height of the air outlet 112 and the infrared heating plate 12 on the first mounting seat 113 can be adjusted through the waist hole 115, so that the air outlet 112 and the infrared heating plate 12 can be adjusted to a better position relative to the coated electrode, so as to improve the baking efficiency of the coated electrode, and at the same time, the air knife 10 can be used for drying coated electrodes of different specifications. A scale is set on one side of the waist hole 115 in the height direction, so as to be used as a reference when adjusting the height of the first mounting seat 113 relative to the second mounting seat 114, so as to improve the convenience of height adjustment.

[0076] Please continue to refer to Figure 4 , Figure 8 , Fig. 9 , Fig.10 and Fig.12 In some embodiments, a first air uniforming plate 1141 is disposed at the top of the second mounting base 114 , and a plurality of first air uniforming holes 1142 are evenly arranged on the first air uniforming plate 1141 , and the air inlet 111 is connected to the air outlet 112 through the first air uniforming holes 1142 .

[0077] It can be understood that the first air uniformity plate 1141 is located at the top of the second mounting seat 114, and the first air uniformity plate 1141 is evenly arranged with multiple first air uniformity holes 1142, which has a uniform dispersion effect on the airflow, promotes the airflow to act evenly on the coated electrode, blows away the solvent and moisture on the coated electrode, and is beneficial to improving the drying efficiency of the coated electrode.

[0078] Please continue to refer to Figure 4 , Fig.12 , Fig.15 and Fig.18In some embodiments, the first mounting base 113 is provided with a second air uniforming plate 1131, the second air uniforming plate 1131 is located at the bottom end of the air outlet nozzle 112, the second air uniforming plate 1131 is evenly arranged with a plurality of second air uniforming holes 1132, and the air inlet 111 is connected to the air outlet nozzle 112 through the second air uniforming holes 1132.

[0079] It can be understood that the second air uniformity plate 1131 is located on the first mounting seat 113 and at the bottom of the air outlet 112. The second air uniformity plate 1131 is evenly arranged with a plurality of second air uniformity holes 1132. The air inlet 111 is connected to the air outlet 112 through the second air uniformity holes 1132, which has a uniform dispersion effect on the airflow, promotes the airflow to act evenly on the coated electrode, blows away the solvent and moisture on the coated electrode, and is conducive to improving the drying efficiency of the coated electrode. After the air flow enters the air inlet 111, it passes through the first air uniformity hole 1142 and the second air uniformity hole 1132 in sequence, and flows out from the two air outlets 112, improving the uniformity of the airflow outflowing from the two air outlets 112, ensuring that the coated electrode is balanced under the suspension effect of the airflow outflowing from the two air outlets 112, preventing the coated electrode from deviating from the infrared heating plate 12, and thus ensuring the drying effect of the coated electrode.

[0080] Please continue reading Figure 4 In some embodiments, the wind knife 10 further includes a mica gasket 15 , which is installed on the installation body 11 and located on the bottom surface of the power connection component 13 .

[0081] It can be understood that the mica gasket 15 is made of mica material, so that the mica gasket 15 has excellent high temperature resistance, which can prevent the gasket from melting when the infrared heating plate 12 is used for a long time; the mica material also has electrical insulation and mechanical strength, which improves durability; the mica gasket 15 is installed on the installation body 11 and is located on the bottom surface of the power connection component 13, stably supporting the power connection component 13 and the infrared heating plate 12, so that the mica gasket 15 can insulate and separate the power connection component 13 and the installation body 11, and when the installation body 11 is made of conductive metal, it can prevent the power connection component 13 from being short-circuited.

[0082] Please continue to refer to Figure 1 , Figure 2 and Figure 4 In some embodiments, the wind knife 10 also includes a first limit member 16, which is L-shaped. The first limit member 16 is connected to the installation body 11 and is located on the opposite side of the two air outlet nozzles 112; the first limit member 16 is against the top surface of the infrared heating plate 12.

[0083] It can be understood that the first limiting member 16 has a limiting function on the top surface of the infrared heating plate 12, preventing the infrared heating plate 12 from escaping from the top of the installation body 11, thereby improving the structural stability of the wind knife 10; the first limiting member 16 is L-shaped, one end of the first limiting member 16 is connected to the opposite side of the two air outlets 112, and the other end is against the top surface of the infrared heating plate 12, forming a limit on the top surface of the infrared heating plate 12; the use of an L-shaped first limiting member 16 is beneficial to preventing the area of ​​the heating surface 121 of the infrared heating plate 12 from being occupied.

[0084] Please continue reading Figure 4 In some embodiments, the wind knife 10 also includes a second limit member 17, which is connected to the installation body 11 and is located on the side opposite to the two air outlet nozzles 112, and the second limit member 17 is abutted against the bottom surface of the power connection component 13, and the top surface of the second limit member 17 is protruding with a protrusion 171, and the protrusion 171 is located on the side of the power connection component 13 away from the air outlet nozzle 112.

[0085] It can be understood that the second limiting member 17 has a supporting function for the connecting component 13 and the infrared heating plate 12; one end of the second limiting member 17 is connected to the opposite side of the two air outlets 112, and the other end is against the bottom surface of the connecting component 13, forming a limit for the bottom surface of the infrared heating plate 12; the top surface of the second limiting member 17 is protrudingly provided with a protrusion 171, and the protrusion 171 is located on the side of the connecting component 13 away from the air outlet 112, forming a limiting function for the connecting component 13, which is beneficial to prevent the connecting component 13 from falling off the second limiting member 17, thereby improving the structural stability of the wind knife 10.

[0086] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Fig.19 In the second embodiment of the present application, a drying device is also provided, including the spring-type conductive wind knife 10 as described above, and a plurality of the wind knives 10 are staggeredly distributed in the drying device.

[0087] It can be understood that the drying equipment provided by the present application adopts the above-mentioned shrapnel-type conductive wind knife 10, and multiple wind knives 10 are staggered in the drying equipment, that is, multiple wind knives 10 are staggered. After the infrared heating plate installed on the wind knife is powered externally by the conductive spring, the infrared heating plate 12 radiates heat to directly bake the coated pole piece of the lithium battery, avoiding the energy waste problem caused by indirectly baking the coated pole piece through the heated air flow, reducing energy loss, and helping to improve resource utilization. The drying equipment can adopt a hull-type coating oven structure, and multiple wind knives 10 are respectively installed on the upper hull and the lower hull. The installation body 11 is installed on the drying equipment for fixing the infrared heating plate 12. Specifically, the top surface of the installation body 11 is provided with an installation groove, and the infrared heating plate 12 is fixed in the installation groove. The two sides of the bottom end of the installation body 11 are respectively provided with a latch 117 and a buckle 118 for detachably fixing on the upper hull or the lower hull. The outer periphery of the installation body 11 is provided with a handle 119 to facilitate the disassembly and assembly of the wind knife 10 on the drying equipment. Air outlets 112 are provided on both sides of the top of the installation body 11. The air outlets 112 are slit-shaped and usually face the coated electrode. An air inlet 111 is provided at the bottom of the installation body 11. The air inlet 111 connects the two air outlets 112. A sealing strip 14 is provided at the bottom of the installation body 11. The sealing strip 14 is arranged around the air inlet 111 to improve the sealing of the air inlet 111 when the installation body 11 is installed in the drying equipment to prevent air leakage. When the installation body 11 is installed in the drying equipment for use, the air inlet 111 connects to the air inlet on the drying equipment, so that the airflow enters the installation body 11 from the air inlet 111 and flows out from the air outlet 112 to blow toward the coated electrode to disperse the solvent and moisture on the coated electrode and improve the baking efficiency. The wind acts on the coated electrode to form a suspension effect on the coated electrode. The top surface of the infrared heating plate 12 is a heating surface 121. When the wind knife 10 bakes the coated electrode, the heating surface 121 faces the coated electrode. The wind knife 10 is provided with an air outlet 112 and an infrared heating plate 12 at the same time. The infrared heating plate 12 is located between the two air outlets 112. The airflow blown out of the air outlet 112 has a diffusion effect on the radiated heat of the infrared heating plate 12, which is conducive to uniform and rapid diffusion of heat, promotes rapid drying of the coated electrode, and improves baking efficiency. The air outlet 112 can be at a certain inclination angle relative to the coated electrode. The two air outlets 112 are symmetrically distributed relative to the coated electrode, and the two air outlets 112 are inclined to the middle position, so that the airflow blown out of the two air outlets 112 acts evenly on the coated electrode, which is conducive to maintaining the stability of the coated electrode and preventing the coated electrode from deviating from the heating surface 121 of the infrared heating plate 12, thereby ensuring the baking effect of the infrared heating plate 12. The power connection assembly 13 is installed on the installation body 11 and is located on the bottom surface of the infrared heating plate 12, and has a supporting function for the infrared heating plate 12. The bottom surface of the infrared heating plate 12 is provided with a power connection terminal 122 for power supply.The power connection component 13 is provided with a conductive spring 131, one end of which extends outward away from the conductive component and is inclined relative to the top surface of the power connection component 13, so that the conductive spring 131 is elastic, and the other end of the conductive spring 131 is connected to the conductive component. When the infrared heating plate 12 is placed on the power connection component 13, the conductive spring 131 elastically abuts against the power connection terminal 122 on the bottom surface of the infrared heating plate 12, the power connection component 13 is externally powered, and the conductive spring 131 is electrically connected to the power connection terminal 122, so as to power the infrared heating plate 12 and ensure the baking effect of the infrared heating plate 12 on the coated electrode; at the same time, the infrared heating plate 12 can be externally powered by the power connection component 13 by simply placing the infrared heating plate 12 on the power connection component 13, which is also convenient for the installation of the infrared heating plate 12; the power connection component 13 elastically abuts against the power connection terminal 122 of the infrared heating plate 12 through the conductive spring 131, which is conducive to ensuring the reliability of the electrical connection between the infrared heating plate 12 and the power connection component 13.

[0088] The present application provides a spring-type conductive wind knife and drying equipment. The spring-type conductive wind knife is used in the drying equipment. The infrared heating plate installed on the wind knife radiates heat after being powered externally by the conductive spring, and directly bakes the coated pole piece of the lithium battery, avoiding the energy waste problem caused by indirectly baking the coated pole piece by heating the air flow, reducing energy loss, and helping to improve resource utilization. The top of the installation body is provided with air outlets on both sides, and the bottom is provided with an air inlet. The air inlet connects the two air outlets, so that the airflow enters the installation body from the air inlet, and flows out from the air outlet, blowing towards the coated pole piece to blow away the solvent and moisture on the coated pole piece, thereby improving the baking efficiency; the wind acts on the coated pole piece, forming a suspension effect on the coated pole piece. When the infrared heating plate is placed on the power connection component, the conductive spring piece elastically abuts against the power connection terminal on the bottom surface of the infrared heating plate, the power connection component is externally powered, and the conductive spring piece is electrically connected to the power connection terminal, so as to power the infrared heating plate and ensure the baking effect of the infrared heating plate on the coated electrode. At the same time, the infrared heating plate can be powered externally through the power connection component by simply placing the infrared heating plate on the power connection component, which is also convenient for the installation of the infrared heating plate. The power connection component elastically abuts against the power connection terminal of the infrared heating plate through the conductive spring piece, which is conducive to ensuring the reliability of the electrical connection between the infrared heating plate and the power connection component.

[0089] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0090] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes, taking "A and / or B" as an example, including scheme A, or scheme B, or a scheme that satisfies both A and B.

[0091] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0092] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0093] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the application concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A spring-type conductive air knife, used for baking and coating pole pieces, characterized in that: include: An installation body, wherein an air inlet is provided at the bottom end of the installation body, and air outlets are provided at both sides of the top end of the installation body, and the air inlet is connected to the two air outlets; An infrared heating plate, which is installed on the installation body and located between the two air outlets; the top surface of the infrared heating plate is a heating surface, and the bottom surface of the infrared heating plate is an electrical terminal; A power connection component is installed on the installation body and is located on the bottom surface of the infrared heating plate; the power connection component is used for external power supply; the power connection component is provided with a conductive spring sheet with one end extending outward, and the end of the conductive spring sheet extending outward elastically abuts against and is electrically connected to the power connection end.

2. The spring-type conductive air knife according to claim 1, characterized in that: The wind knife comprises: One or more infrared heating panels; Wherein, the plurality of infrared heating panels are arranged successively along a direction perpendicular to a line connecting the two air outlets.

3. The spring-type conductive air knife according to claim 2, characterized in that: The power connection assembly comprises: Two power connection bars, each of which is provided with a plurality of conductive springs; The two power connection bars are respectively located on both sides of the infrared heating plate close to the two air outlets; the two power connection bars are elastically pressed against and electrically connected to the power connection ends on both sides of the bottom surface of the infrared heating plate through the conductive spring sheets.

4. The spring-type conductive air knife according to claim 1, characterized in that: The installation body comprises: A first mounting seat, wherein the bottom end of the first mounting seat is open; the two air outlets are located on both sides of the top end of the first mounting seat; A second mounting seat, the top end of which is inserted into the bottom opening of the first mounting seat and is detachably connected to the first mounting seat; the air inlet is located at the bottom end of the second mounting seat.

5. The spring-type conductive air knife according to claim 4, characterized in that: The first mounting seat or the second mounting seat is provided with a waist hole extending along the height direction, and the second mounting seat or the first mounting seat is detachably connected to the waist hole; the connection position of the second mounting seat or the first mounting seat is moved along the waist hole to adjust the relative height of the air outlet and the air inlet.

6. The spring-type conductive air knife according to claim 4, characterized in that: A first air uniforming plate is disposed at the top of the second mounting seat, and a plurality of first air uniforming holes are evenly arranged on the first air uniforming plate. The air inlet is connected to the air outlet through the first air uniforming holes.

7. The spring-type conductive air knife according to claim 6, characterized in that: The first mounting seat is provided with a second air uniforming plate, the second air uniforming plate is located at the bottom end of the air outlet, the second air uniforming plate is evenly arranged with a plurality of second air uniforming holes, and the air inlet is connected to the air outlet through the second air uniforming holes.

8. The spring-type conductive air knife according to claim 1, characterized in that: The wind knife also includes: A mica gasket is installed on the installation body and is located on the bottom surface of the power connection component.

9. The shrapnel-type conductive air knife according to any one of claims 1 to 8, characterized in that: The wind knife also includes: A first stopper, wherein the first stopper is L-shaped, connected to the installation body, and located on a side opposite to the two air outlets; the first stopper abuts against the top surface of the infrared heating plate; or, A second limit member, the second limit member is connected to the installation body and is located on a side opposite to the two air outlets, the second limit member is abutted against the bottom surface of the power connection component, and a protrusion is protruding from the top surface of the second limit member, and the protrusion is located on a side of the power connection component away from the air outlet.

10. A drying device, characterized in that: include: The spring-type conductive air knife as described in any one of claims 1 to 9, wherein a plurality of the air knives are staggeredly distributed in the drying equipment.

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