Heat preservation device applied to lithium battery coating machine

Abstract

The utility model discloses a heat preservation device applied to a lithium battery coating machine. Comprising a heating box mechanism, an air box mechanism and a hot air conveying mechanism, wherein the heating box mechanism is used for being fixed to the lithium battery coating machine and located between a coating mechanism in the lithium battery coating machine and a drying box in the lithium battery coating machine; the air box mechanism is arranged on the heating box mechanism in a communicating mode; and the heating box mechanism, the air box mechanism and the hot air conveying mechanism are matched with one another to form an environment for preserving heat of the lithium battery pole piece which is just coated in the heating box. The lithium battery pole piece heating box mechanism is reasonable in structure, high in safety, good in energy-saving effect and high in practicability, the temperature of a just coated lithium battery pole piece is relatively stable when the lithium battery pole piece passes through the heating box mechanism, the lithium battery pole piece cannot bear the effect of alternate cold and hot temperature change, and the production quality of the lithium battery pole piece can be effectively improved. The utility model is suitable for being mounted on the lithium battery coating machine and used when the lithium battery pole piece is produced.

Description

Technical Field

[0001] The utility model relates to a heat preservation device, in particular to a heat preservation device applied to a lithium battery coating machine. Background Art

[0002] The coating process of lithium batteries is to evenly apply the prepared slurry on the substrate and then dry it to make lithium battery pole pieces. This coating process is an important process in the production of lithium batteries. It directly affects the production quality of lithium battery pole pieces and further affects the performance of lithium battery products.

[0003] like Figure 1 As shown, the existing lithium battery coating machine usually includes a unwinding mechanism 1, a first steering roller 2, a coating mechanism 3, a roller mechanism 4, a drying box 5, a second steering roller 6 and a winding device 7. When in use, the substrate 8 is wound on the unwinding device and passes through the first steering roller 2, the coating mechanism 3, the roller mechanism 4, the drying box 5, the second steering roller 6 and the winding device 7 in sequence to complete the coating process.

[0004] At present, when the above-mentioned lithium battery coating machine is used for the coating process, the slurry in the coating process usually uses a high-viscosity slurry. In order to improve the fluidity of the high-viscosity slurry, improve the coating efficiency and ensure the stability of the coating, it is usually necessary to first heat the high-viscosity slurry to a certain temperature before the coating work. Specifically, when the coating work is performed, the high-viscosity slurry with temperature is coated on the substrate 8 through the coating mechanism 3 to form a newly coated lithium battery pole piece. The newly coated lithium battery pole piece needs to pass through the roller mechanism 4 and enter the drying box 5 for drying. The temperature of the newly coated lithium battery pole piece is relatively high. In the process of passing through the roller mechanism 4 and entering the drying box 5, the newly coated lithium battery pole piece will be exposed to the relatively low temperature room temperature environment, and then the newly coated lithium battery pole piece will enter the relatively high temperature drying box 5 from the relatively low temperature room temperature environment. The newly coated lithium battery pole piece will be subjected to the effects of alternating hot and cold temperature changes in a short period of time, which will easily cause cracks and wrinkles on the lithium battery pole piece, and even cause damage to the lithium battery pole piece, seriously affecting the production quality of the lithium battery pole piece. Summary of the invention

[0005] In order to solve the above deficiencies in the prior art, the utility model aims to provide a heat preservation device applied to a lithium battery coating machine, so as to achieve the purpose of improving the production quality of lithium battery pole pieces.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: an insulation device applied to a lithium battery coating machine, comprising a heating box mechanism fixed on the lithium battery coating machine, located between a coating mechanism in the lithium battery coating machine and a drying box in the lithium battery coating machine, a wind box mechanism connected to the heating box mechanism, and a hot air conveying mechanism connected to the wind box mechanism. The heating box mechanism, the wind box mechanism and the hot air conveying mechanism cooperate with each other to form an environment in the heating box to keep the lithium battery pole pieces that have just been coated warm.

[0007] As a limitation of the present invention, the heating box mechanism includes a box body with openings at both ends, a bracket fixed to the bottom of the box body, and a roller component fixed in the box body, wherein a heating layer component is fixedly provided on at least one side of the box body, a first heat insulation layer component and a first protective layer component are fixedly provided on the outer side of the heating layer component in sequence, a second heat insulation layer component and a second protective layer component are fixedly provided in sequence on the side of the box body where no heating layer component is provided; a heating box temperature sensor component is fixedly provided on the side of the box body where the heating layer component is provided.

[0008] As a further definition of the present utility model, the wind box mechanism includes a zigzag box body with an opening at the lower end fixed on the box body, an air inlet duct connected to the zigzag box body, a dispersing wind component fixed in the cavity of the zigzag box body for dispersing concentrated wind, a first wind direction arranging component fixed in the cavity of the zigzag box body for preliminarily arranging the wind to be uniform, a second wind direction arranging component fixed in the cavity of the zigzag box body for arranging the wind to be uniform again, and a wind box temperature sensor fixed at the lower end opening position of the zigzag box body; the air inlet duct is located above the dispersing wind component, and the dispersing wind component, the first wind direction arranging component and the second wind direction arranging component are arranged in sequence from top to bottom along the height direction of the zigzag box body.

[0009] As a further limitation of the present invention, a third heat insulating layer component is fixedly provided on the outer surface of the folded line box body, and a third protective layer component is fixedly provided on the outer surface of the third heat insulating layer component.

[0010] As a further limitation of the present invention, the wind dispersing component includes a mounting plate fixed in the cavity of the folded-line box body, and a plurality of wind hoods are detachably connected side by side on the mounting plate.

[0011] As a further limitation of the present invention, both the first wind direction arrangement component and the second wind direction arrangement component are orifice plates.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0013] (1) The utility model adopts a structural form that combines a heating box mechanism, a wind box mechanism and a hot air conveying mechanism, wherein the heating box mechanism, the wind box mechanism and the hot air conveying mechanism cooperate with each other to form an environment in the heating box that keeps the lithium battery pole pieces just coated. The lithium battery pole pieces just coated from the coating mechanism can pass through the heating box mechanism and then enter the drying box. The temperature in the heating box is close to the temperature of the lithium battery pole pieces just coated. The lithium battery pole pieces just coated will not be subjected to the effects of alternating hot and cold temperature changes. Therefore, the temperature of the lithium battery pole pieces just coated is relatively stable, and the lithium battery pole pieces are not prone to cracks and wrinkles, which can effectively improve the coating quality, and further effectively improve the production quality of the lithium battery pole pieces.

[0014] (2) The heating box mechanism, hot air delivery mechanism and wind box mechanism in the utility model cooperate with each other to form an environment in the heating box that keeps the newly coated lithium battery pole piece warm. The heating layer components and the hot air delivery mechanism in the heating box mechanism serve as heat sources and jointly provide heat to the environment inside the heating box mechanism, which can effectively increase the heating speed of the heating box mechanism. Specifically, heating the internal environment by relying solely on the heating layer components in the heating box mechanism is very slow, and because the utility model is connected to a drying box when in use, the drying box is provided with a device for extracting harmful gases, which makes the utility model in a negative pressure state on the side close to the coating mechanism, and the external normal temperature air is sucked into the heating box mechanism, which will further affect the heating speed inside the heating box mechanism. The hot air conveying mechanism and the wind box mechanism in the utility model can effectively solve the problem of slow heating inside the heating box mechanism, and the hot air blown out by the hot air conveying mechanism is blown out into the heating box mechanism through the wind box mechanism. The hot air blown out by the wind box mechanism can form a barrier at the air inlet of the heating box mechanism, and the balance with the negative pressure can prevent the normal temperature air in the environment from entering the heating box mechanism, and the hot air blown out by the wind box mechanism can directly heat up the inside of the heating box mechanism, which can effectively improve the heating efficiency of the utility model.

[0015] (3) The first insulation layer component and the second insulation layer component in the heating box mechanism of the utility model can reduce the temperature loss inside the heating box mechanism, which can effectively improve the heating efficiency of the utility model and reduce energy consumption, and can play a role in heat insulation safety protection, which can prevent burns to the staff and effectively improve the safety of the utility model.

[0016] (4) The hot air entering the air inlet pipe of the stroke box mechanism of the utility model is concentrated air. The concentrated air first passes through the wind dispersing component to become dispersed air. The dispersed air then passes through the first wind direction adjustment component and the second wind direction adjustment component in sequence to become uniform and stable air. The wind is then transported into the heating box mechanism, which can effectively improve the uniformity and stability of the hot air input into the heating box mechanism.

[0017] (5) A third heat-insulating layer component is provided on the outer surface of the folding line box body in the utility model, which can effectively reduce the heat loss of hot air when passing through the wind box mechanism, effectively save energy, and play a role in heat insulation and safety protection, which can prevent burns to the staff and effectively improve the safety of the utility model.

[0018] In summary, the utility model has a reasonable structure, high safety, good energy-saving effect and strong practicality. During the coating work, the newly coated lithium battery pole piece passes through the heating box mechanism and then enters the drying box. The temperature of the newly coated lithium battery pole piece is relatively stable when passing through the heating box mechanism. The lithium battery pole piece will not be subjected to the effect of alternating hot and cold temperature changes, which can effectively improve the coating quality, and further effectively improve the production quality of lithium battery pole pieces. The utility model is suitable for installation on a lithium battery coating machine and used in the production of lithium battery pole pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 It is a structural schematic diagram of an existing lithium battery coating machine;

[0021] Figure 2 This is a schematic diagram of the structure of an embodiment of the utility model from a first viewing angle;

[0022] Figure 3 A schematic diagram of the structure of the second viewing angle of an embodiment of the utility model;

[0023] Figure 4 This is a disassembled schematic diagram of the heating box mechanism in the embodiment of the utility model;

[0024] Figure 5 This is a disassembled schematic diagram of the wind box mechanism in the embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the installation positions of the wind dispersing component, the first wind direction arrangement component and the second wind direction arrangement component in the embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the connection relationship between the hood and the mounting plate in the embodiment of the utility model;

[0027] Figure 8 This is a schematic diagram of the installation positions of the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor in the embodiment of the utility model;

[0028] Fig. 9 This is a schematic diagram of the structure of the embodiment of the utility model installed on a lithium battery coating machine;

[0029] In the figure: 1. unwinding mechanism; 2. first turning roller; 3. coating mechanism; 4. roller mechanism; 5. drying box; 6. second turning roller; 7. winding device; 8. substrate;

[0030] 9. Heating box mechanism; 901. Upper box plate; 902. Lower box plate; 903. Left box plate; 904. Right box plate; 905. Rear box plate; 906. Unpowered roller; 907. Heating layer component; 908. First heat insulation layer component; 909. First protective layer component; 910. Second heat insulation layer component; 911. Second protective layer component; 912. Support; 913. First temperature sensor; 914. Second temperature sensor; 915. Third temperature sensor;

[0031] 10. Wind box mechanism; 101. Broken line box body; 102. Third heat insulation layer member; 103. Third protective layer member; 104. Air inlet pipe; 105. Mounting plate; 106. Wind cap; 107. First wind direction arrangement member; 108. Second wind direction arrangement member; 109. Fourth temperature sensor;

[0032] 11. Hot air conveying mechanism; 12. Triangular angle steel component. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention, and are not used to limit the present invention.

[0034] Embodiment A heat preservation device applied to a lithium battery coating machine

[0035] like Figure 2 , Figure 3 As shown, this embodiment includes a heating box mechanism 9 fixed on the lithium battery coating machine and located between the coating mechanism in the lithium battery coating machine and the drying box 5 in the lithium battery coating machine, a wind box mechanism 10 connected to the heating box mechanism 9, and a hot air conveying mechanism 11 connected to the wind box mechanism 10. The heating box mechanism 9, the wind box mechanism 10 and the hot air conveying mechanism 11 cooperate with each other to form an environment in the heating box to keep the lithium battery pole pieces that have just been coated warm. The hot air conveying mechanism 11 adopts an existing hot air blower, which is placed on the ground.

[0036] The heating box mechanism 9 includes a box body with openings at both ends, a bracket fixed to the bottom of the box body, and a roller component fixed in the box body. Figure 4As shown, specifically, in this embodiment, the box body includes an upper box body plate 901, a lower box body plate 902, a left box body plate 903, a right box body plate 904, and a rear box body plate 905, wherein the rear box body plate 905 is provided with a rectangular box body opening for the substrate 8 to pass through. The upper box body plate 901, the lower box body plate 902, the left box body plate 903, the right box body plate 904, and the rear box body plate 905 are fixed together by screws. The bracket includes four supports 912 respectively fixed at the four corner positions of the bottom of the box body. The roller component includes a plurality of existing unpowered rollers 906 for transmitting lithium battery pole pieces, which are fixed side by side between the left box body plate 903 and the right box body plate 904 along the transmission direction of the lithium battery pole piece. The opening at one end of the box body used for connecting with the coating mechanism in the lithium battery coating machine is an arc-shaped opening adapted to the shape and size of the coating mechanism, and the opening at one end of the box body used for connecting with the drying box 5 in the lithium battery coating machine is a rectangular box body opening. A heating layer component 907 is fixedly provided on at least one side of the box body, and a backing adhesive is fixedly provided on the bottom surface of the heating layer component 907, and the heating layer component is fixed to the box body by gluing the backing adhesive. The outer side of the heating layer component 907 is fixedly provided with a first heat insulation layer component 908 and a first protective layer component 909 in sequence. Specifically, a backing adhesive is fixedly provided on the top surface of the first heat insulation layer component 908, and the first protective layer component 909 is fixed together with the first heat insulation layer component 908 by the backing adhesive, and the first protective layer component 909 and the first heat insulation layer component 908 fixed together are then fixedly connected to the heating layer component 907 and the box body by screws. The second heat insulating layer component 910 and the second protective layer component 911 are fixedly arranged in sequence on the side of the box body where the heating layer component 907 is not arranged. Specifically, the side of the second heat insulating layer component 910 opposite to the second protective layer component 911 is fixedly arranged with adhesive, and the second protective layer component 911 is fixed together with the second heat insulating layer component 910 by the adhesive, and the fixed second protective layer component 911 and the second heat insulating layer component 910 are fixedly connected to the corresponding side of the box body by screws. The side of the box body where the heating layer component 907 is arranged is fixedly arranged with a heating box temperature sensor component, and the heating box temperature sensor component is electrically connected to the PLC controller in the external electric control box, the heating layer component 907 is electrically connected to the PLC controller in the external electric control box, and the hot air conveying mechanism 11 is electrically connected to the PLC controller in the external electric control box. Specifically, in this embodiment, the outer surfaces of the upper box plate 901 and the lower box plate 902 are fixed with a heating layer component 907, a first heat insulation layer component 908, and a first protective layer component 909 in sequence from the inside to the outside, and the outer surfaces of the left box plate 903 and the right box plate 904 are fixed with a second heat insulation layer component 910 and a second protective layer component 911 in sequence from the inside to the outside, wherein the heating layer component 907 is an existing heating plate, the first heat insulation layer component 908 and the second heat insulation layer component 910 are existing heat insulation plates, and the first protective layer component 909 and the second protective layer component 911 are stainless steel plates. Figure 8As shown, the temperature sensor component of the heating box includes a first temperature sensor 913 fixed on the upper box plate 901, a second temperature sensor 914 fixed on the lower box plate 902, and a third temperature sensor 915 fixed on the upper box plate 901, wherein the temperature measuring head of the first temperature sensor 913 is located in the upper box plate 901, the temperature measuring head of the second temperature sensor 914 is located in the lower box plate 902, the temperature measuring head of the third temperature sensor 915 is located in the box, and the temperature measuring head of the third temperature sensor 915 is 1 cm to 2 cm away from the upper surface of the lithium battery substrate. The first temperature sensor 913, the second temperature sensor 914 and the third temperature sensor 915 are all electrically connected to the PLC controller in the external electric control box, and the two heating plates located on the upper box plate 901 and the lower box plate 902 are respectively electrically connected to the PLC controller in the external electric control box. The first temperature sensor 913 and the second temperature sensor 914 can respectively detect the temperatures on the upper box plate 901 and the lower box plate 902, and adjust and control the temperatures of the two heating plates on the upper box plate 901 and the lower box plate 902 through the PLC controller in the external electrical control box. The third temperature sensor 915 can detect the temperature near the upper surface of the lithium battery electrode, and according to the actual temperature conditions, the PLC controller in the external electrical control box controls the temperature of the air blowing of the hot air conveying mechanism 11 and the temperature of the heating plate so that the temperature near the upper surface of the lithium battery electrode meets the production requirements, making the temperature control more accurate.

[0037] The wind box mechanism 10 includes a zigzag box body 101 with a lower opening fixed to the top of the box body by two triangular angle steel members 12, an air inlet pipe 104 connected to the zigzag box body 101, a dispersing wind member fixed in the cavity of the zigzag box body 101 for dispersing the concentrated wind, a first wind direction arrangement member 107 fixed in the cavity of the zigzag box body 101 for preliminarily arranging the wind evenly, a second wind direction arrangement member 108 fixed in the cavity of the zigzag box body 101 for arranging the wind evenly again, and a wind box temperature sensor fixed at the lower opening position of the zigzag box body 101, wherein the wind box temperature sensor is electrically connected to the PLC controller in the external electric control box. Figure 6 As shown, the air inlet pipe 104 is located above the wind dispersing member, and the wind dispersing member, the first wind direction arrangement member 107 and the second wind direction arrangement member 108 are arranged in sequence from top to bottom along the height direction of the folding line box body 101, wherein the first wind direction arrangement member 107 and the second wind direction arrangement member 108 both use orifice plates, and the density of holes in the orifice plate used in the first wind direction arrangement member 107 is less than the density of holes in the orifice plate used in the second wind direction arrangement member 108. Figure 5As shown, specifically, in this embodiment, the folded-line box body 101 includes a folded-line box-like structure composed of multiple rectangular plates that are detachably fixed together. The bottom of the folded-line box-like structure has a wind box opening, and the wind box opening is connected to the front end of the box body so that the wind in the wind box can flow into the box body. A third thermal insulation layer component 102 is fixedly provided on the outer surface of the folded-line box body 101, and a third protective layer component 103 is fixedly provided on the outer surface of the third thermal insulation layer component 102. Specifically, the third thermal insulation layer component 102 adopts an existing thermal insulation board, and the third protective layer component 103 adopts a stainless steel plate. The side of the third thermal insulation layer component 102 opposite to the third protective layer component 103 is fixedly provided with adhesive, and the third protective layer component 103 is fixedly connected to the third thermal insulation layer component 102 by the adhesive, and the fixed third thermal insulation layer component 102 and the third protective layer component 103 are fixedly connected to the corresponding side surfaces of the folded-line box body 101 by screws. As shown Figure 7 As shown, the wind dispersing member includes a mounting plate 105 fixedly mounted in the cavity of the folding line box body 101, and a plurality of hoods 106 are detachably connected side by side on the mounting plate 105. The hood 106 includes a tubular member threadedly connected to the mounting plate 105, the upper end of the tubular member is fixed to the mounting plate 105 by a nut, and a plurality of vents are evenly opened around the bottom end of the tubular member. The wind box temperature sensor includes a fourth temperature sensor 109, which is fixed at the position of the lower end opening of the folding line box body 101. The fourth temperature sensor 109 can detect the temperature at the outlet of the wind box mechanism 10, can detect the outlet air temperature of the wind box mechanism 10, and can accurately control the temperature of the air blown out of the wind box mechanism 10 through the PLC controller in the external electric control box.

[0038] When using this embodiment, if Fig. 9 As shown, the present embodiment needs to be installed on the existing lithium battery coating machine first. Before installing the present embodiment, the roller mechanism 4 on the existing lithium battery coating machine needs to be removed first, and then the bottoms of the four brackets in the present embodiment are respectively fixed to the existing lithium battery coating machine with bolts, and the present embodiment is located between the coating mechanism and the drying box 5, wherein the end of the box body with an arc opening in the present embodiment is close to the coating mechanism and a gap is left between the box body and the coating mechanism in the present embodiment to avoid affecting the normal operation of the coating mechanism. After the present embodiment is installed, the present embodiment can be operated to start the hot air conveying mechanism 11 and the heating layer component 907 to start working, and the coating work can be started after the temperature in the heating box mechanism 9 is close to the temperature of the lithium battery electrode just coated and remains constant. During actual production, the lithium battery coating machine cooperates with the present embodiment to complete the coating work. Specifically, the rolled substrate 8 is wound on the unwinding mechanism 1, and the substrate 8 passes through the first turning roller 2, the coating mechanism 3, the roller component, the insulation device, and the second turning roller 6 in sequence to form a lithium battery electrode, and finally passes through the winding device 7 to complete the storage.

[0039] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat preservation device applied to a lithium battery coating machine, characterized in that: It includes a heating box mechanism fixed on a lithium battery coating machine and located between a coating mechanism in the lithium battery coating machine and a drying box in the lithium battery coating machine, a wind box mechanism connected to the heating box mechanism, and a hot air conveying mechanism connected to the wind box mechanism. The heating box mechanism, the wind box mechanism and the hot air conveying mechanism cooperate with each other to form an environment in the heating box to keep the lithium battery pole pieces that have just been coated warm.

2. The heat preservation device used in a lithium battery coating machine according to claim 1, characterized in that: The heating box mechanism includes a box body with openings at both ends, a bracket fixed to the bottom of the box body, and a roller component fixed in the box body, wherein a heating layer component is fixedly provided on at least one side of the box body, a first heat insulation layer component and a first protective layer component are fixedly provided in sequence on the outer side of the heating layer component, a second heat insulation layer component and a second protective layer component are fixedly provided in sequence on the side of the box body where no heating layer component is provided, and a heating box temperature sensor component is fixedly provided on the side of the box body where the heating layer component is provided.

3. The heat preservation device used in a lithium battery coating machine according to claim 2, characterized in that: The wind box mechanism includes a zigzag box body with an opening at the lower end fixed on the box body, an air inlet duct connected to the zigzag box body, a dispersing wind component fixed in the cavity of the zigzag box body for dispersing concentrated wind, a first wind direction arranging component fixed in the cavity of the zigzag box body for preliminarily arranging the wind evenly, a second wind direction arranging component fixed in the cavity of the zigzag box body for arranging the wind evenly again, and a wind box temperature sensor fixed at the lower end opening position of the zigzag box body; the air inlet duct is located above the dispersing wind component, and the dispersing wind component, the first wind direction arranging component and the second wind direction arranging component are arranged in sequence from top to bottom along the height direction of the zigzag box body.

4. The heat preservation device used in a lithium battery coating machine according to claim 3, characterized in that: A third heat-insulating layer component is fixedly disposed on the outer surface of the folded-line box body, and a third protective layer component is fixedly disposed on the outer surface of the third heat-insulating layer component.

5. A heat preservation device applied to a lithium battery coating machine according to claim 3 or 4, characterized in that: The wind dispersing component comprises a mounting plate fixedly arranged in the cavity of the folding line box body, and a plurality of wind caps are detachably connected side by side on the mounting plate.

6. The heat preservation device used in a lithium battery coating machine according to claim 5, characterized in that: The first wind direction arrangement component and the second wind direction arrangement component are both orifice plates.

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