Preheating device

Abstract

The utility model discloses a preheating device, which relates to the technical field of battery manufacturing and comprises a preheating box body and at least one heating tray. A preheating cavity is formed in the preheating box body, and feeding and discharging ports are formed in the two ends of the preheating box body. A plurality of preheating layers are arranged in the preheating cavity, first sliding connecting pieces are arranged on the two sides of each preheating layer, and the connecting pieces extend to the feeding and discharging port. Each heating tray comprises a tray body and a first fence on the periphery, and the first fences of the heating trays of the adjacent preheating layers can be attached to each other so as to reduce heat loss. Second sliding connecting pieces are arranged on the two sides of the heating tray and can be in separated sliding connection with the first sliding connecting pieces. According to the design, heat loss is reduced through the first enclosure, gaps between the heating trays are eliminated, temperature uniformity in the preheating process is ensured, the preheating effect is improved, and production line efficiency and battery cell quality control are guaranteed.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to preheating devices. Background Technology

[0002] In the battery manufacturing industry, the preheating process is crucial to the production quality of battery cells. As a key step in the battery production line, the preheating machine's main function is to heat the cell materials to an appropriate temperature to facilitate subsequent processes such as pressing and casing. However, existing preheating machines have some shortcomings in temperature control within the preheating chamber, primarily manifested in heat loss leading to temperature instability and large temperature differences in localized areas.

[0003] Specifically, when the temperature within the preheating chamber is unstable, leading to locally low temperatures, the preheating effect on the battery cells in that area will be insufficient, thus affecting the stability of subsequent processes such as cell lamination, casing, and thickness measurement. Conversely, when the temperature within the preheating chamber is unstable, leading to excessively high temperatures, the blue adhesive on the battery cells will shrink due to heat. Blue adhesive is a material used for battery cell encapsulation, typically printed with a QR code for identifying and tracking battery cell information. When the blue adhesive shrinks due to high temperatures, the QR code may become blurred, directly affecting the subsequent scanning and recognition process. Failed scanning and recognition will disrupt information tracking on the production line, thereby impacting the efficiency of the entire production line and the quality control of the battery cells.

[0004] Therefore, there is an urgent need to develop a solution that can effectively ensure the temperature stability inside the preheating chamber in order to improve the quality of battery production. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a preheating device to solve the technical problem of temperature instability caused by heat loss in the preheating chamber, which affects the preheating effect.

[0006] To achieve the above-mentioned technical objectives, this application provides a preheating device, including a preheating chamber and at least one heating tray;

[0007] The preheating box is equipped with a preheating chamber.

[0008] The preheating box is provided with a first inlet and outlet port that connects to the preheating chamber at one end and a second inlet and outlet port that connects to the preheating chamber at the other end.

[0009] The preheating cavity is provided with at least one preheating layer for accommodating the heating tray;

[0010] The preheating layer is provided with first sliding connectors on both sides;

[0011] The two ends of the first sliding connector extend to the first inlet / outlet and the second inlet / outlet, respectively;

[0012] The heating tray includes a tray body and a first enclosure surrounding the tray body;

[0013] The first enclosures of the heating trays located adjacent to the preheating layers can fit together;

[0014] The heating tray is provided with second sliding connectors on both sides, which can be detachably and slidably connected to the first sliding connector.

[0015] Furthermore, multiple heating plates are evenly distributed on the heating tray;

[0016] Each of the heating plates is equipped with a fixture plate for supporting the battery cell.

[0017] Furthermore, there are 6-10 heating plates arranged in a uniform array.

[0018] Furthermore, at least one end of the preheating layer is provided with a movable door panel;

[0019] The movable door panel has rotating connectors at both ends, which are rotatably connected to both sides of the preheating cavity.

[0020] Furthermore, the movable door panels of adjacent preheating layers can be fitted together or partially staggered in a vertical state.

[0021] Furthermore, a step is provided on one side of the top of the movable door panel, allowing the lower side of the adjacent movable door panel to extend in.

[0022] Furthermore, at least one side of the movable door panel is provided with rollers;

[0023] The rollers are capable of rolling contact with the side of the heating tray.

[0024] Furthermore, there are multiple rollers, which are spaced apart from top to bottom.

[0025] Furthermore, it also includes material transfer mechanisms;

[0026] The material transfer mechanism is located on one side of the first inlet / outlet or on one side of the second inlet / outlet;

[0027] The material unloading transfer mechanism includes a transfer platform and a transfer drive;

[0028] The transfer drive is connected to the transfer platform and is used to move the transfer platform away from or closer to the preheating box.

[0029] The transfer platform is surrounded by a second enclosure.

[0030] The second enclosure is equipped with a detection device for detecting the battery cells on the transfer platform.

[0031] Furthermore, the preheating chamber has a sealed window at one end where the first inlet / outlet is located and / or at the other end where the second inlet / outlet is located.

[0032] As can be seen from the above technical solutions, the preheating device designed in this application, by adding a first enclosure around the perimeter of the tray body to construct the heating tray, effectively reduces heat loss during the preheating process due to the heat blocking effect of the first enclosure when placed in the preheating layer. Simultaneously, the first enclosures of the heating trays located in adjacent preheating layers are configured to fit together, thereby eliminating gaps between heating trays in different layers and further reducing heat loss. The above design effectively solves the technical problem of temperature instability caused by heat loss within the preheating chamber, resulting in large temperature differences in local areas. It ensures temperature uniformity during the preheating process, improves the preheating effect, and guarantees the efficiency of subsequent production lines and the quality control of the battery cells. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A partial structural diagram of the preheating device provided in this application without the preheating chamber cover;

[0035] Figure 2 This is a cross-sectional view of the preheating device provided in this application;

[0036] Figure 3 for Figure 2 Enlarged view of position A;

[0037] Figure 4 This is a schematic diagram showing the loading and unloading status of the heating tray of the preheating device provided in this application.

[0038] Figure 5 A schematic diagram of the heating tray of the preheating device provided in this application;

[0039] Figure 6 A schematic diagram of the preheating device with a shroud provided in this application;

[0040] Figure 7 This is a schematic diagram of the transfer platform and transfer drive of the preheating device provided in this application;

[0041] Figure 8 A schematic diagram of the structure of the second enclosure of the preheating device provided in this application;

[0042] In the diagram: 1. Preheating chamber; 11. Chamber frame; 111. First sliding connector; 12. Machine cover; 2. Heating tray; 21. Tray body; 22. First enclosure; 221. First plate; 23. Heating plate; 24. Fixture plate; 25. Second sliding connector; 3. Movable door panel; 31. Rotating connector; 32. Step; 33. Roller; 4. Unloading transfer mechanism; 41. Transfer platform; 42. Transfer driver; 43. Second enclosure; 431. First baffle; 4311. First fixed connector; 432. Second baffle; 4321. Second fixed connector; 433. Clearance opening; 44. Detection device; 45. Battery cell fixture. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0044] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0046] This application discloses a preheating device.

[0047] Please see Figures 1 to 4 One embodiment of the preheating device provided in this application includes:

[0048] Preheating chamber 1 and at least one heating tray 2; such as Figure 6 As shown, the preheating chamber 1 may specifically include a chamber frame 11 and a cover 12 covering the chamber frame 11. For details, please refer to the existing preheating chamber 1 structural design, which will not be described in detail here.

[0049] The preheating chamber 1 has a preheating cavity inside; one end of the preheating chamber 1 has a first inlet / outlet communicating with the preheating cavity, and the other end has a second inlet / outlet communicating with the preheating cavity. The first and second inlet / outlets can be both inlets and outlets; it can be understood that the heating tray 2 can be fed from both ends of the preheating chamber 1, or discharged from inside the preheating chamber 1 to both ends, or fed from one end and discharged from the other. Specifically, the first inlet / outlet is set as an inlet, and the second inlet / outlet is set as an outlet, thus achieving feeding from one end and discharging from the other. Figure 4 As shown, the heating tray 2 is fed from one end. During the feeding process, the heating tray 2 corresponding to the preheating layer of the preheating chamber is pushed out to complete the alternation of loading and unloading. Those skilled in the art can make changes to the design according to actual needs without restriction.

[0050] The preheating chamber is provided with at least one preheating layer for accommodating the heating tray 2; the two sides of the preheating layer are respectively provided with a first sliding connector 111; the two ends of the first sliding connector 111 extend to the first inlet / outlet and the second inlet / outlet respectively; the two sides of the heating tray 2 are provided with a second sliding connector 25 that can be slidably connected to the first sliding connector 111.

[0051] The heating tray 2 is slidably connected to the first sliding connector 111 via the second sliding connector 25, allowing the heating tray 2 to slide along the length of the preheating chamber, thus facilitating the preheating of the battery cells within the preheating chamber. When preheating of the battery cells is required, the operator can push the heating tray 2 containing the battery cells into the preheating chamber from the first inlet / outlet until the heating tray 2 slides to a preset position. After preheating is complete, the operator can pull the heating tray 2 out from the second inlet / outlet to remove the preheated battery cells.

[0052] The first sliding connector 111 can be a slide rail, while the second sliding connector 25 is a slider that is slidably connected to the slide rail.

[0053] To better facilitate the loading and unloading of the heating tray 2, buffer chambers can be added to both ends of the preheating chamber to serve as buffer areas for loading and unloading the heating tray 2, thus providing convenience for loading and unloading the heating tray 2.

[0054] The heating tray 2 includes a tray body 21 and a first enclosure 22 surrounding the tray body 21. The second sliding connectors 25 are respectively disposed on both sides of the first enclosure 22. Taking the tray body 21 as a rectangular tray structure as an example, the first enclosure 22 is designed as a rectangular enclosure structure, which is composed of four first plates 221.

[0055] The first enclosure 22 of the heating tray 2 located in the adjacent preheating layer can fit together; in order to achieve better fit, the first enclosure 22 can be extended downward by a certain distance, so that the first enclosure 22 can fit better with the first enclosure 22 below.

[0056] The preheating device designed in this application constructs a heating tray 2 by adding a first enclosure 22 around the tray body 21. When placed in the preheating layer, the first enclosure 22 blocks heat, effectively reducing heat loss during the preheating process (preventing the temperature at the perimeter from being lower than the temperature in the middle, resulting in a large temperature difference). Simultaneously, the first enclosure 22 of the heating trays 2 in adjacent preheating layers is configured to fit together, eliminating gaps between heating trays 2 in different layers and further reducing heat loss. This design effectively solves the technical problem of temperature instability caused by heat loss within the preheating chamber, resulting in large temperature differences in localized areas. It ensures temperature uniformity during the preheating process, improves the preheating effect, and guarantees the efficiency of subsequent production lines and the quality control of battery cells.

[0057] The above is Embodiment 1 of the preheating device provided in this application. The following is Embodiment 2 of the preheating device provided in this application. Please refer to the following for details. Figures 1 to 8 .

[0058] Based on the solution of Embodiment 1 above:

[0059] Furthermore, such as Figure 4 as well as Figure 5 As shown, multiple heating plates 23 are evenly distributed on the heating tray 2; each heating plate 23 is equipped with a jig plate 24 for supporting the battery cell.

[0060] The battery cell is placed on the fixture plate 24, which is used to fix the battery cell and prevent it from moving or deforming during preheating, thus ensuring the quality of preheating. The heating plate 23 preheats the battery cell. The design of multiple evenly distributed heating plates 23 makes the heat more uniform and improves preheating efficiency.

[0061] Furthermore, such as Figure 4 As shown, there are 6-10 heating plates 23 arranged in a uniform array, with 8 being the preferred design. Designing the heating plates 23 to be smaller but having a larger number of them can make the heat distribution more uniform.

[0062] Furthermore, such as Figure 3As shown, at least one end of the preheating layer is provided with a movable door panel 3; both ends of the movable door panel 3 are provided with rotating connectors 31, which are rotatably connected to both sides of the preheating cavity respectively.

[0063] Preferably, movable door panels 3 are provided at both ends. The design of movable door panels 3 can enclose the preheating layer, further reduce heat loss, and improve the thermal stability inside the preheating layer.

[0064] The rotating connector 31 can be a pivot, and the movable door panel 3 adopts a rotating design for easy opening and closing. The opening method can be manual or by directly pushing the heating tray 2 open. When the heating tray 2 needs to be pushed into the preheating layer, the operator can open the movable door panel 3 at one end of the corresponding preheating layer (or directly push it open with the heating tray 2), and then push the heating tray 2 into the preheating layer from the first or second inlet / outlet. After preheating, the operator can open the movable door panel 3 at the other end of the corresponding preheating layer (or directly push the unloading heating tray 2 open with the feeding heating tray 2), and then pull the heating tray 2 out of the preheating layer. This design not only improves the convenience of loading and unloading but also effectively avoids heat loss during the preheating process.

[0065] Furthermore, such as Figure 3 As shown, the movable door panels 3 of adjacent preheating layers can be fitted together or partially staggered in a vertical state. This design can further improve the sealing between preheating layers, reduce heat loss from the gaps between them, and thus improve preheating efficiency. When the movable door panels 3 of adjacent preheating layers are fitted together, there are almost no gaps between them, which can effectively prevent heat loss. Or when they are partially staggered, although some gaps exist, these gaps are minimized due to the staggered design, and a good sealing effect can still be maintained.

[0066] Furthermore, such as Figure 3 As shown, taking the staggered distribution design as an example, the top side of the movable door panel 3 is provided with a step 32, which allows the lower side of the adjacent movable door panel 3 to extend in.

[0067] This stepped section 32 design allows adjacent movable door panels 3 to form a tighter fit when they are staggered, thereby further reducing heat loss. The size and shape of the stepped section 32 can be designed according to actual needs to ensure a good sealing effect between adjacent movable door panels 3.

[0068] The step portion 32 can be located on the inner or outer side. Taking the movable door panel 3 located on the feeding side as an example, the step portion 32 can be located on the inner side, so that the movable door panels 3 of each layer can be opened smoothly when feeding. Taking the movable door panel 3 located on the discharging side as an example, the step portion 32 can be located on the outer side, so that the movable door panels 3 of each layer can be opened smoothly when discharging.

[0069] Furthermore, taking the opening of the movable door panel 3 by pushing it open as an example, at least one side of the movable door panel 3 is provided with a roller component 33; the roller component 33 can roll into contact with the side of the heating tray 2. This roller component 33 design can reduce the friction between the movable door panel 3 and the heating tray 2, making the heating tray 2 move more smoothly in and out of the preheating layer, and further improving the convenience of loading and unloading materials.

[0070] Furthermore, such as Figure 3 As shown, there are multiple rollers (such as three, which is not limited) distributed at intervals from top to bottom. The design of multiple rollers ensures that the movable door panel 3 maintains good contact with the heating tray 2 at different height positions, thereby ensuring that the movable door panel 3 can be opened more smoothly. At the same time, the spaced rollers can also distribute the pressure of the heating tray 2 on the movable door panel 3, extending the service life of the movable door panel 3.

[0071] Furthermore, such as Figures 6 to 8 As shown, it also includes a material feeding transfer mechanism 4; the material feeding transfer mechanism 4 is located on one side of the first inlet / outlet or on one side of the second inlet / outlet; the material feeding transfer mechanism 4 includes a transfer platform 41 and a transfer driver 42; the transfer driver 42 is connected to the transfer platform 41 and is used to drive the transfer platform 41 to move away from or closer to the preheating box 1.

[0072] The transfer drive 42 can be a cylinder, motor, or other drive device, used to drive the transfer platform 41 to reciprocate, realizing the transfer of battery cells. During the transfer, the transfer drive 42 moves the transfer platform 41 closer to the preheating chamber 1. The operator / robotic arm can then remove the preheated battery cells from the preheating device and place them on the transfer platform 41. Then, the transfer drive 42 moves the transfer platform 41 away from the preheating chamber 1, transporting the battery cells to the next process. The specific design of this transfer mechanism 4 can be referenced from existing transfer mechanisms and will not be elaborated further.

[0073] The key improvement of the needle feeding transfer mechanism 4 in this application is that a second enclosure 43 is added around the transfer platform 41. The second enclosure 43 protects the transfer platform 41, and the height of the second enclosure 43 can be designed according to actual needs.

[0074] The structure of the second enclosure 43 may include a first cover 431 and a second cover 432. The first cover 431 is provided with a first fixed connector 4311, and the second cover 432 is provided with a second fixed connector 4321 fixedly connected to the first cover 431 to form the required protective cavity. The second enclosure 43 is fixedly connected to the transfer platform 41 (specifically, it is fixed to the transfer platform 41 through the first fixed connector 4311 and / or the second fixed connector 4321). The first fixed connector 4311 and the second fixed connector 4321 are connected to form a connecting component, and a clearance opening 433 is formed between adjacent connecting components to avoid the battery cell fixture 44 on the transfer platform 41.

[0075] Furthermore, such as Figure 8 As shown, the second enclosure 43 is equipped with a detection device 44 for detecting battery cells on the transfer platform 41. The detection device 44 can be an infrared sensor, weight sensor, etc., used to detect the presence, location, or quantity of battery cells on the transfer platform 41. Through the detection device 44, automated detection and monitoring of battery cells can be achieved, improving production efficiency and quality. When a battery cell is detected, the detection device 44 can send a signal to the control system, which then controls the transfer driver 42 to perform the next operation based on the signal, thus realizing an automated production process.

[0076] The detection device 44 can be installed on the upwardly extending part of the top of the second shield 432, and then facing the transfer platform 41.

[0077] Furthermore, such as Figure 6 As shown, the preheating box 1 has a sealed window on one end with a first inlet / outlet and / or on the other end with a second inlet / outlet.

[0078] The window design allows for a degree of enclosure of the preheating chamber 1, further reducing heat loss and improving preheating efficiency. The window can be made of transparent material, such as glass or transparent plastic, to allow operators to observe the preheating process inside the preheating chamber 1.

[0079] The sealing window can be a fixed design (when the sealing window is a fixed, non-openable design, care should be taken to avoid obstructing the first or second inlet / outlet to prevent affecting material feeding and discharging), or an openable / closable design (when the sealing window is an openable / closable design, it can cover the first or second inlet / outlet, and the sealing window can be opened during material feeding and discharging).

[0080] Taking the openable / closable design as an example, the sealing window can be opened and closed manually or automatically via a drive device. When it is necessary to push or pull the heating tray 2 into or out of the preheating chamber 1, the operator can open the sealing window and then push or pull the heating tray 2 into or out of the preheating chamber 1. During the preheating process, the sealing window remains closed to reduce heat loss.

[0081] The preheating device provided in this application has been described in detail above. For those skilled in the art, there may be changes in the specific implementation and application scope based on the ideas of the embodiments of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A preheating device, characterized in that, Includes a preheating chamber (1) and at least one heating tray (2); The preheating box (1) is provided with a preheating cavity; The preheating box (1) has a first inlet and outlet port that connects to the preheating chamber at one end and a second inlet and outlet port that connects to the preheating chamber at the other end. The preheating cavity is provided with at least one preheating layer for accommodating the heating tray (2); The preheating layer is provided with first sliding connectors (111) on both sides respectively. The two ends of the first sliding connector (111) extend to the first inlet / outlet and the second inlet / outlet, respectively; The heating tray (2) includes a tray body (21) and a first enclosure (22) surrounding the tray body (21). The first enclosure (22) of the heating tray (2) located adjacent to the preheating layer can fit together; The heating tray (2) is provided with second sliding connectors (25) on both sides that can be slidably connected to the first sliding connector (111).

2. The preheating device according to claim 1, characterized in that, Multiple heating plates (23) are evenly distributed on the heating tray (2); Each of the heating plates (23) is equipped with a jig plate (24) for supporting the battery cell.

3. The preheating device according to claim 2, characterized in that, The heating plates (23) consist of 6-10 units arranged in a uniform array.

4. The preheating device according to claim 1, characterized in that, At least one end of the preheating layer is provided with a movable door panel (3); The movable door panel (3) is provided with rotating connectors (31) at both ends, which are rotatably connected to both sides of the preheating cavity respectively.

5. The preheating device according to claim 4, characterized in that, The movable door panels (3) of adjacent preheating layers can be attached together or partially staggered in a vertical state.

6. The preheating device according to claim 5, characterized in that, The top side of the movable door panel (3) is provided with a step (32) for the lower side of the adjacent movable door panel (3) to extend into.

7. The preheating device according to claim 4, characterized in that, At least one side of the movable door panel (3) is provided with a roller (33); The roller (33) is capable of rolling contact with the side of the heating tray (2).

8. The preheating device according to claim 7, characterized in that, There are multiple rollers, which are spaced apart from top to bottom.

9. The preheating device according to claim 1, characterized in that, It also includes a material transfer mechanism (4); The material transfer mechanism (4) is located on one side of the first inlet / outlet or on one side of the second inlet / outlet; The material transfer mechanism (4) includes a transfer platform (41) and a transfer drive (42). The transfer drive (42) is connected to the transfer platform (41) and is used to drive the transfer platform (41) to move away from or closer to the preheating box (1); The transfer platform (41) is surrounded by a second enclosure (43). The second enclosure (43) is equipped with a detection device (44) for detecting the battery cells on the transfer platform (41).

10. The preheating device according to claim 1, characterized in that, The preheating box (1) has a sealed window on one end with the first inlet and / or the other end with the second inlet and outlet.

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