Core package preheating device and core package hot-pressing system

Abstract

The utility model discloses a core package preheating device and a core package hot-pressing system, the device comprises a heating box and a conveying mechanism, the heating box is provided with a feed port and a discharge port, the feed port and the discharge port are located at different heights in the height direction of the heating box, and the feed port and the discharge port are communicated with a cavity of the heating box; the conveying mechanism is arranged in the heating box and comprises a plurality of conveying belts used for conveying core packages, the conveying belts are arranged at intervals in the height direction of the heating box, the conveying directions of the adjacent conveying belts are opposite, the feeding end of the conveying mechanism corresponds to the feeding port in position, and the discharging end of the conveying mechanism corresponds to the discharging port in position. The technical problem of poor hot pressing effect of the core package caused by insufficient heating of the core package in the prior art is solved, and the technical effects of improving the hot pressing effect of the core package and ensuring the electrical performance of the battery prepared from the core package are further achieved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a core pack heating device and a core pack hot pressing system. Background Art

[0002] In the production process of lithium battery stacking, hot pressing and bonding are required before the core package is put into the shell to shape the battery cell, eliminate diaphragm wrinkles and air, and ensure that the diaphragm and the positive and negative pole pieces fit tightly. In the related technology, hot pressing equipment such as manual hot press or automatic hot press is used to hot press the core package, but as the capacity of the core package increases and the number of pole pieces increases, the heat transfer into the core package is slow, and the thermal conductivity and effect are poor, which affects the hot pressing effect of the core package. Utility Model Content

[0003] The embodiment of the present application provides a core package preheating device and a core package hot pressing system. The core package is preheated by the core package preheating device. The core package flows in a heating box through a conveying mechanism. The core package preheating time is long and the heating is sufficient, thereby achieving the purpose of ensuring the hot pressing effect of the core package.

[0004] In a first aspect, an embodiment of the present application provides a core package preheating device, comprising:

[0005] A heating box, wherein a feed inlet and a discharge outlet are provided on the heating box, wherein the feed inlet and the discharge outlet are located at different heights along the height direction of the heating box, and the feed inlet and the discharge outlet are connected to the cavity of the heating box;

[0006] A conveying mechanism is arranged in the heating box, and the conveying mechanism includes a plurality of conveyor belts for conveying core packages. Along the height direction of the heating box, the plurality of conveyor belts are arranged at intervals, and the conveying directions of adjacent conveyor belts are opposite. The feed end of the conveying mechanism corresponds to the feed port position, and the discharge end of the conveying mechanism corresponds to the discharge port position.

[0007] Optionally, a bracket is provided in the heating box, and the conveying mechanism is installed on the bracket.

[0008] Optionally, the bracket includes a plurality of support plates, which are spaced apart along a height direction of the heating box, the support plates are fixedly connected to the heating box, and the conveyor belt is mounted on the support plates.

[0009] Optionally, the heating box has a first side wall and a second side wall that are arranged opposite to each other, and the multiple support plates include at least one first support plate and at least one second support plate. Along the height direction of the heating box, the first support plate and the second support plate are alternately arranged, the first support plate is arranged on the first side wall, and the end of the first support plate facing away from the first side wall is spaced a certain distance from the second side wall, and the second support plate is arranged on the second side wall, and the end of the second support plate facing away from the second side wall is spaced a certain distance from the first side wall.

[0010] Optionally, the feed port is arranged on the first side wall, the discharge port is arranged on the second side wall, the feed port is close to one side of the heating box, and the discharge port is close to the other side of the heating box.

[0011] Optionally, the conveying mechanism further includes a plurality of transfer assemblies located at the ends of the conveying belts, and the transfer assemblies are used to connect the conveying belts at different heights.

[0012] Optionally, the transfer assembly includes a lifting mechanism and a transfer platform, the transfer platform is connected to the telescopic end of the lifting mechanism, and the lifting mechanism is used to drive the transfer platform to rise and fall and connect with the conveyor belts at different heights.

[0013] Optionally, the lifting mechanism includes a first motor, a screw rod and a mounting seat, the output end of the first motor is connected to the screw rod, the mounting seat is provided at one end of the screw rod away from the first motor, and the transmission platform is fixed on the mounting seat.

[0014] Optionally, the transmission platform includes a second motor, a driving roller, a driven roller and a conveyor belt, the output end of the second motor is connected to the driving roller, the driving roller and the driven roller are spaced apart, and the conveyor belt is sleeved on the driving roller and the driven roller.

[0015] In a second aspect, an embodiment of the present application further provides a core package hot pressing system, comprising any one of the core package preheating devices described above.

[0016] The core package preheating device and core package hot pressing system provided in the embodiments of the present application, the core package preheating device includes a heating box and a conveying mechanism, the heating box is provided with a feed port and a discharge port, the feed port and the discharge port are located at different heights, the feed end of the conveying mechanism corresponds to the position of the feed port, the discharge end of the conveying mechanism corresponds to the discharge port box, the core package enters from the feed port and is transported by the conveying mechanism and then output from the discharge port, the conveying mechanism includes a plurality of conveyor belts arranged at intervals, the transmission directions of adjacent conveyor belts are opposite, the conveyor belts transport the core package in an "S" shape, the transportation path is long, the occupied space is small, and the heating time of the core package in the heating box is increased, thereby ensuring the preheating effect of the core package, overcoming the technical problem of the prior art that the hot pressing effect of the core package is poor due to insufficient heating of the core package, thereby achieving the technical effect of improving the hot pressing effect of the core package and ensuring the electrical performance of the battery prepared by the core package. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0018] In order to more completely understand the present application and its beneficial effects, the following description will be made in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0019] Figure 1 A schematic diagram of the structure of a core package preheating device provided in an embodiment of the present application.

[0020] Figure 2 A schematic diagram of the installation of a transfer assembly in a core pack preheating device provided in an embodiment of the present application.

[0021] Figure 3 A schematic diagram of the installation of a transfer platform in a core package preheating device provided in an embodiment of the present application.

[0022] Figure 4 A schematic diagram of another structure of the core package preheating device provided in an embodiment of the present application.

[0023] Description of Figure Numbers:

[0024] 100, heating box; 110, feed port; 120, discharge port; 130, first side wall; 140, second side wall; 200, conveying mechanism; 210, conveyor belt; 220, transfer assembly 220; 221, lifting mechanism; 2211, first motor; 2212, screw rod; 2213, mounting seat; 222, transmission platform; 2220, second motor; 2221, driving roller; 2222, driven roller; 2223, conveyor belt; 300, bracket; 310, support plate 310; 311, first support plate; 312, second support plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] See also Figure 1 and Figure 4 , an embodiment of the present application provides a core package preheating device including a heating box 100 and a conveying mechanism 200 .

[0027] In this embodiment, see Figure 1 , the heating box 100 is a hollow cubic structure. The heating box 100 has a first side wall 130 and a second side wall 140 that are arranged opposite to each other. The heating box 100 is provided with a feed port 110 and a discharge port 120. The feed port 110 and the discharge port 120 are connected to the cavity of the heating box 100. The feed port 110 is arranged on the first side wall 130, and the discharge port 120 is arranged on the second side wall 140. In other embodiments, the feed port 110 and the discharge port 120 can be arranged on the same side wall of the heating box 100, such as both being arranged on the first side wall 130 or the second side wall 140. The feed port 110 and the discharge port 120 are both rectangular openings, and the size of the feed port 110 and the discharge port 120 is larger than the size of the core package, so as to ensure that the core package can enter the heating box 100 from the feed port 110 and can be transferred out of the heating box 100 from the discharge port 120. The shapes and sizes of the feed port 110 and the discharge port 120 may be the same or different, so as to achieve the purpose of the core pack entering and exiting the heating box 100. The feed port 110 and the discharge port 120 are located at different heights along the height direction of the heating box 100. At least the plane where the lower edge of the feed port 110 is located is higher than the plane where the upper edge of the discharge port 120 is located.

[0028] The heating box 100 can be an electric heating box or an infrared heating box. Taking the infrared heating box as an example, the heating box 100 includes a box body, an infrared heater and a thermal insulation layer. The box body is a cubic structure, and the infrared heater is installed on the box body. An infrared heater is installed on each surface of the box body, or infrared heaters are installed on several surfaces of the box body, such as infrared heaters are installed on the bottom and top surfaces of the box body. The thermal insulation layer is arranged in the interlayer of the box body. The material of the thermal insulation layer is high-temperature resistant and high-aluminum refractory fiber. The thermal insulation material is compressed, and the installation thickness is less than 300 mm, and the thermal insulation performance is good. In addition, the heating box 100 also includes a temperature control system. A temperature sensor is arranged in the cavity of the heating box 100 for real-time detection of the temperature in the cavity of the heating box 100. The temperature control system controls the operation of the infrared heater according to the temperature in the heating box 100. The temperature control system has a high degree of automation, which avoids the probability of excessive heating or insufficient heating of the core package.

[0029] In this embodiment, see Figure 1 The conveying mechanism 200 is arranged in the heating box 100, and the conveying mechanism 200 includes a plurality of conveyor belts 210 for conveying the core package. The conveyor belt 210 includes a plurality of pulleys and a conveyor belt sleeved on the pulleys, and the pulleys are arranged in sequence along the length direction of the conveyor belt. The distance between any two adjacent pulleys is the same. At least one of the plurality of pulleys is a power drive wheel, and the other pulleys are idle wheels. The drive wheel allows the conveyor belt to move forward and drives the core package conveyed on the conveyor belt to move forward.

[0030] See also Figure 1 , along the height direction of the heating box 100, multiple conveyor belts 210 are arranged at intervals. The distance between adjacent conveyor belts 210 can be the same. The distance between adjacent conveyor belts 210 can be slightly higher than the thickness of the core package, and it is sufficient to ensure that the space between adjacent conveyor belts 210 is sufficient for the core package to pass through. The transmission directions of adjacent conveyor belts 210 are opposite, and the height space in the heating box 100 is reasonably utilized to ensure the heating time of the core package in the heating box 100. For example, when the feed port 110 is arranged on the first side wall 130 and the discharge port 120 is arranged on the second side wall 140, at least three conveyor belts 210 are arranged, and the transmission direction of the conveyor belt 210 close to the feed port 110 is from the first side wall 130 to the second side wall 140, and the transmission direction of the conveyor belt 210 close to the discharge port 120 is the same as the transmission direction of the conveyor belt 210 close to the feed port 110. The feed end of the conveying mechanism 200 corresponds to the feed port 110, and the discharge end of the conveying mechanism 200 corresponds to the discharge port 120. When the feed port 110 and the discharge port 120 are both disposed on the first side wall 130 or the second side wall 140, at least two conveyor belts 210 are disposed, and the conveying direction of the conveyor belt 210 near the discharge port 120 is opposite to the conveying direction of the conveyor belt 210 near the feed port 110.

[0031] In the embodiment of the present application, the core package enters from the feed port 110 and is transported by multiple conveyor belts 210 of the conveying mechanism 200. The transport directions of adjacent conveyor belts 210 are opposite, so that the core package is transported and circulated in an "S" shape in the heating box 100. While ensuring the heating time of the core package, the internal space of the heating box 100 is fully utilized, the volume of the heating box 100 is reduced, the space occupied is small, and the cost of the heating box 100 is reduced. The core package has a long circulation time in the heating box 100, and finally goes out from the discharge port 120 and enters the next hot pressing process. Before the core package is hot-pressed, the core package is preheated by a core package preheating device to ensure the hot pressing effect of the core package.

[0032] In some embodiments, see Figure 1 and Figure 4 A bracket 300 is disposed in the heating box 100 , and the conveying mechanism 200 is installed on the bracket 300 .

[0033] In the present application examples, see Figure 1 The conveying mechanism 200 is fixed by the bracket 300, and the conveying mechanism 200 has good stability, ensuring smooth transportation of the conveying mechanism 200.

[0034] In some embodiments, see Figure 1 and Figure 4 The bracket 300 includes a plurality of support plates 310. The support plates 310 are flat plate structures. Along the height direction of the heating box 100, a plurality of support plates 310 are arranged at intervals. The distances between adjacent support plates 310 are the same. The support plates 310 are fixedly connected to the heating box 100, and the conveyor belts 210 correspond one to one with the support plates 310, and the conveyor belts 210 are installed on the corresponding support plates 310. Among them, if the lower edge of the discharge port 120 is flush with the bottom of the heating box 100, the number of conveyor belts 210 can be one more than the number of support plates 310, and the conveyor belt 210 located on the side of the discharge port 120 can be directly in accordance with the bottom of the heating box 100. Along the height direction of the heating box 100, the projections of the plurality of conveyor belts 210 overlap.

[0035] For example, see Figure 1 and Figure 4The heating box 100 includes a first side wall 130, a second side wall 140, a third side wall and a fourth side wall, wherein the first side wall 130 is arranged opposite to the second side wall 140, the third side wall is arranged opposite to the fourth side wall, the third side wall and the fourth side edge are located between the first side wall 130 and the second side wall 140, and the third side wall and the fourth side edge connect the first side wall 130 and the second side wall 140. The feed port 110 is arranged on the first side wall 130, and the discharge port 120 is arranged on the second side wall 140. The support plate 310 can be fixed on the third side wall and / or the fourth side wall. One end of a support plate 310 docked with the feed port 110 is located at the lower edge of the feed port 110 and is in contact with the first side wall 130, and the other end is spaced one end distance from the second side wall 140, so that the core package can enter the conveyor belt 210 of the next layer. Correspondingly, one end of a support plate 310 docked with the discharge port 120 is located at the lower edge of the discharge port 120 and is in contact with the second side wall 140, and the other end is spaced apart from the first side wall 130 by one end, so that the upper core package can enter. Both ends of the other support plates 310 can be spaced apart from the first side wall 130 and the second side wall 140 by a certain distance, leaving enough space for the core package to fall and transfer.

[0036] In the present application examples, see Figure 1 and Figure 4 The bracket 300 is made of a plurality of support plates 310, has a simple structure, and is easy to install and operate. Moreover, the support plates 310 are arranged reasonably, and the space in the heating box 100 is reasonably utilized, and the design is ingenious.

[0037] In some embodiments, see Figure 1 , the plurality of support plates 310 include at least one first support plate 311 and at least one second support plate 312, and the first support plates 311 and the second support plates 312 are alternately arranged along the height direction of the heating box 100. The first support plate 311 is arranged on the first side wall 130, and one end of the first support plate 311 away from the first side wall 130 is spaced a certain distance from the second side wall 140. When a plurality of first support plates 311 are arranged, along the height direction of the heating box 100, the plurality of first support plates 311 are arranged at intervals, and the second support plates 312 are arranged on the second side wall 140, and one end of the second support plate 312 away from the second side wall 140 is spaced a certain distance from the first side wall 130. When a plurality of second support plates 312 are arranged, along the height direction of the heating box 100, the plurality of second support plates 312 are arranged at intervals, and one end of the second support plate 312 away from the second side wall 140 is spaced a certain distance from the first side wall 130. The sizes of the first support plate 311 and the second support plate 312 may be the same.

[0038] In the present application examples, see Figure 1The first support plate 311 is fixed on the first side wall 130, and the second support plate 312 is fixed on the second side wall 140. The first support plate 311 and the second support plate 312 are arranged crosswise. While satisfying the core package circulation, the support plate 310 is convenient to install, with a simple structure and reasonable design.

[0039] In some embodiments, see Figure 1 , the feed port 110 is arranged on the first side wall 130, the discharge port 120 is arranged on the second side wall 140, the feed port 110 is close to one side of the heating box 100, and the discharge port 120 is close to the other side of the heating box 100. Along the height direction of the heating box 100, the uppermost first support plate 311 is flush with the lower edge of the feed port 110 or slightly lower than the lower edge of the feed port 110. The lowermost second support plate 312 is flush with the lower edge of the discharge port 120 or slightly higher than the lower edge of the discharge port 120, ensuring that the core package can flow out of the discharge port 120. In other embodiments, if the lower edge of the discharge port 120 is flush with the bottom of the heating box 100, the lowermost conveyor belt 210 is directly arranged at the bottom of the heating box 100, which maximizes the use of the space in the heating box 100, saves one support plate 310, and reduces costs.

[0040] In some embodiments, see Figure 1 The conveying mechanism 200 further includes a plurality of transfer assemblies 220 located at the ends of the conveying belts 210 , and the transfer assemblies 220 are used to connect the conveying belts 210 at different heights.

[0041] For example, see Figure 1 , adjacent conveyor belts 210 are connected by a transfer assembly 220, and the transfer assembly 220 is used to connect conveyor belts 210 at different heights. The transfer assembly 220 is installed on the support plate 310, and the transfer assembly 220 transfers the core package on the upper conveyor belt 210 to the adjacent conveyor belt 210. Alternatively, a transfer assembly 220 is set between one end of the support plate 310 and the heating box 100, and the transfer assembly 220 can connect multiple conveyor belts 210, reducing the number of transfer assemblies 220 and reducing equipment investment.

[0042] In the embodiment of the present application, a transfer assembly 220 is provided to connect the conveyor belts 210 at different heights, so as to reasonably utilize the space in the heating box 100, ensure smooth transportation of the core package, and reduce the probability of damaging the core package due to height difference.

[0043] In other embodiments, see Figure 4, the transfer assembly 220 may not be provided, and the end of the lower conveyor belt 210 close to the second side wall 140 is provided to be longer than the end of the adjacent upper conveyor belt 210 close to the second side wall 140. The end of the lower conveyor belt 210 close to the first side wall 130 is shorter than the end of the adjacent lower conveyor belt 210 close to the first side wall 130. This allows the core packages transported by the upper conveyor belt 210 to fall onto the lower conveyor belt 210, thereby reducing the equipment investment of the transfer assembly 220 and reducing the cost.

[0044] In some embodiments, see Figure 1 The transfer assembly 220 includes a lifting mechanism 221 and a transfer platform 222. The transfer platform 222 is connected to the telescopic end of the lifting mechanism 221, and the lifting mechanism 221 is used to drive the transfer platform 222 to rise and fall and connect with the conveyor belts 210 at different heights. The lifting and falling of the transfer platform 222 and the connection with the conveyor belts 210 at different heights means that the transfer platform 222 can receive the core package conveyed by the upper conveyor belt 210 and transfer the core package to the lower conveyor belt 210.

[0045] In the present application examples, see Figure 1 The transfer assembly 220 includes a lifting mechanism 221 and a transfer platform 222. The transfer platform 222 can rotate forward or backward to achieve the purpose of receiving and transferring the core package. The lifting mechanism 221 can adjust the position of the transfer platform 222 so that the transfer platform 222 can dock with different conveyor belts 210. The structure is simple, compact, and highly automated.

[0046] In some embodiments, see Figure 1 and Figure 2 The lifting mechanism 221 includes a first motor 2211, a screw rod 2212 and a mounting seat 2213. The first motor 2211 is installed inside the heating box 100. It is convenient to install and operate when installed inside the heating box 100, and the structure is simple. Alternatively, the first motor 2211 is installed outside the heating box 100 to prevent the temperature inside the heating box 100 from affecting the performance of the first motor 2211 and protect the first motor 2211. The output end of the first motor 2211 is connected to the screw rod 2212 through a coupling, and the first motor 2211 drives the screw rod 2212 to rotate. A mounting seat 2213 is set at one end of the screw rod 2212 away from the first motor 2211. The mounting seat 2213 is rotatably connected to the screw rod 2212, and the mounting seat 2213 rises and falls as the screw rod 2212 rotates. The transmission platform 222 is fixed on the mounting seat 2213, driving the transmission platform 222 to move up and down.

[0047] In the embodiment of the present application, the first motor 2211 drives the screw rod 2212 to rotate, drives the mounting seat 2213 connected to the screw rod 2212 to rise and fall, thereby driving the transmission platform 222 to move up and down, the structure is simple and compact, and the transmission platform 222 can be adjusted to any height, and the lifting and adjusting operation is convenient.

[0048] In some embodiments, see Figure 1 and Figure 3 The transmission platform 222 includes a second motor 2220, a driving roller 2221, a driven roller 2222 and a conveyor belt 2223. The output end of the second motor 2220 is connected to the driving roller 2221 through a coupling, the driving roller 2221 and the driven roller 2222 are arranged at intervals, and the conveyor belt 2223 is sleeved on the driving roller 2221 and the driven roller 2222. The conveyor belt 2223 is tensioned on the driving roller 2221 and the driven roller 2222 to prevent the conveyor belt 2223 from slipping. The second motor 2220 drives the driving roller 2221 to rotate, and the driving roller 2221 drives the conveyor belt 2223 to move synchronously. The second motor 2220 can rotate forward and reverse, thereby driving the conveyor belt 2223 to transmit in different directions. The second motor 2220 can be installed in the heating box 100, and can also be installed outside the heating box 100. When the second motor 2220 is installed outside the heating box 100 , the output end of the second motor 2220 extends into the heating box 100 through the side wall of the heating box 100 .

[0049] In the embodiment of the present application, the transmission platform 222 includes a second motor 2220, a driving roller 2221, a driven roller 2222 and a conveyor belt 2223. It has a simple and compact structure, can realize the transmission of core packages in different directions, has a high degree of automation, and is easy to operate.

[0050] See also Figure 1 and Figure 4 , an embodiment of the present application provides a core package hot pressing system, including a core package preheating device. The core package hot pressing system also includes a hot pressing device. The core package preheating device includes a heating box 100 and a conveying mechanism 200. The heating box 100 is provided with a feed port 110 and a discharge port 120. The feed port 110 and the discharge port 120 are connected to the cavity of the heating box 100. The conveying mechanism 200 is arranged in the heating box 100, and the conveying mechanism 200 includes a plurality of conveyor belts 210 for conveying the core package. Along the height direction of the heating box 100, the plurality of conveyor belts 210 are arranged at intervals. The conveying directions of adjacent conveyor belts 210 are opposite.

[0051] In the embodiment of the present application, the core package enters from the feed port 110 and is transported by multiple conveyor belts 210 of the conveying mechanism 200. The transport directions of adjacent conveyor belts 210 are opposite, so that the core package is transported and circulated in an "S" shape in the heating box 100. While ensuring the heating time of the core package, the internal space of the heating box 100 is fully utilized, the volume of the heating box 100 is reduced, the space occupied is small, and the cost of the heating box 100 is reduced. The core package has a long circulation time in the heating box 100, and finally goes out from the discharge port 120 and enters the hot pressing device for hot pressing operation. Before the core package is hot-pressed, the core package is preheated by the core package preheating device to ensure the hot pressing effect of the core package.

[0052] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0053] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0054] The core package heating device and the core package hot pressing system provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A core package preheating device, characterized in that: include: A heating box (100), wherein the heating box (100) is provided with a feed inlet (110) and a discharge outlet (120), wherein the feed inlet (110) and the discharge outlet (120) are located at different heights along the height direction of the heating box (100), and the feed inlet (110) and the discharge outlet (120) are connected to the cavity of the heating box (100); A conveying mechanism (200) is arranged in the heating box (100), and the conveying mechanism (200) includes a plurality of conveying belts (210) for conveying core packages. Along the height direction of the heating box (100), the plurality of conveying belts (210) are arranged at intervals, and the conveying directions of adjacent conveying belts (210) are opposite. The feed end of the conveying mechanism (200) corresponds to the feed port (110), and the discharge end of the conveying mechanism (200) corresponds to the discharge port (120).

2. The core package preheating device according to claim 1, characterized in that: A bracket (300) is arranged in the heating box (100), and the conveying mechanism (200) is installed on the bracket (300).

3. The core package preheating device according to claim 2, characterized in that: The bracket (300) comprises a plurality of support plates (310), and the plurality of support plates (310) are arranged at intervals along the height direction of the heating box (100); the support plates (310) are fixedly connected to the heating box (100), and the conveyor belt (210) is installed on the support plates (310).

4. The core package preheating device according to claim 3, characterized in that: The heating box (100) comprises a first side wall (130) and a second side wall (140) which are arranged opposite to each other. The plurality of support plates (310) comprise at least one first support plate (311) and at least one second support plate (312). Along the height direction of the heating box (100), the first support plates (311) and the second support plates (312) are arranged alternately. The first support plate (311) is arranged on the first side wall (130), and one end of the first support plate (311) which faces away from the first side wall (130) is spaced a certain distance from the second side wall (140). The second support plate (312) is arranged on the second side wall (140), and one end of the second support plate (312) which faces away from the second side wall (140) is spaced a certain distance from the first side wall (130).

5. The core package preheating device according to claim 4, characterized in that: The feed port (110) is arranged on the first side wall (130), and the discharge port (120) is arranged on the second side wall (140). The feed port (110) is close to one side of the heating box (100), and the discharge port (120) is close to the other side of the heating box (100).

6. The core package preheating device according to any one of claims 1 to 4, characterized in that: The conveying mechanism (200) further comprises a plurality of transfer assemblies (220) located at the ends of the conveying belts (210), and the transfer assemblies (220) are used to connect the conveying belts (210) at different heights.

7. The core package preheating device according to claim 6, characterized in that: The transfer assembly (220) comprises a lifting mechanism (221) and a transmission platform (222), wherein the transmission platform (222) is connected to the telescopic end of the lifting mechanism (221), and the lifting mechanism (221) is used to drive the transmission platform (222) to rise and fall and connect with the conveyor belt (210) at different heights.

8. The core package preheating device according to claim 7, characterized in that The lifting mechanism (221) comprises a first motor (2211), a screw rod (2212) and a mounting seat (2213); the output end of the first motor (2211) is connected to the screw rod (2212); the mounting seat (2213) is arranged at one end of the screw rod (2212) away from the first motor (2211); and the transmission platform (222) is fixed on the mounting seat (2213).

9. The core package preheating device according to claim 7, characterized in that: The transmission platform (222) comprises a second motor (2220), a driving roller (2221), a driven roller (2222) and a conveyor belt (2223); the output end of the second motor (2220) is connected to the driving roller (2221); the driving roller (2221) and the driven roller (2222) are arranged at intervals; and the conveyor belt (2223) is sleeved on the driving roller (2221) and the driven roller (2222).

10. A core package hot pressing system, characterized in that: include: A core package preheating device as claimed in any one of claims 1 to 9.

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