Vacuum baking oven

Abstract

The vacuum baking oven is provided with an oven body, an oven door and a movable plate, a cavity is formed in the oven body, an opening communicated with the outside is formed in the side wall of the cavity, the oven door is movably connected to the oven body, the oven door can open or close the opening of the cavity, and the movable plate can move in the height direction of the cavity. The movable plate is movably and oppositely arranged on the bottom wall of the cavity, a sealing cavity is defined by the movable plate and the bottom wall of the cavity, and the movable plate can move in the cavity to be used for changing the volume of the sealing cavity. It can be understood that by means of the technical scheme, the problem that energy is wasted due to the fact that part of the volume in the cavity cannot be effectively utilized when the battery cells of different specifications and different numbers are processed is solved, the heating time is shortened, the drying efficiency of the battery cells is improved, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a vacuum baking box. Background Art

[0002] Batteries are an indispensable power storage medium in daily life and production, and battery cells are the heart of batteries. The production efficiency of battery cells will directly affect the production efficiency of batteries. Battery cell drying is a key part of battery cell production. Currently, mainstream baking devices generally adopt a large cavity design. Large cavities can dry a large number of battery cells at a time. However, due to the large cavity volume, the vacuuming time is long, and the inconsistent time for removing moisture from the battery cells leads to extended drying time. When processing battery cells of different specifications and quantities, part of the cavity volume cannot be effectively utilized, resulting in a huge waste of energy. Therefore, there is a need for a battery cell vacuum baking device that can adjust the baking device cavity volume according to actual needs. Utility Model Content

[0003] The main purpose of the utility model is to provide a vacuum baking oven, aiming to solve the problem of energy waste in drying battery cores.

[0004] To achieve the above-mentioned purpose, the utility model provides a vacuum baking oven, comprising:

[0005] A box body is formed with a cavity, and a side wall of the cavity is provided with an opening communicating with the outside;

[0006] a box door, the box door being movably provided at the opening of the cavity and being used for opening or closing the box body;

[0007] a heater disposed on the bottom wall of the cavity; and

[0008] A movable plate is movable along the height direction of the cavity. The movable plate is movably arranged relative to the bottom wall of the cavity and encloses the bottom wall of the cavity to form a sealed cavity. The cavity wall of the sealed cavity is connected to a vacuum joint.

[0009] Optionally, a driving mechanism is further included, which is arranged on a side of the movable plate away from the bottom wall of the cavity, and the driving mechanism is connected to the movable plate to enable the movable plate to move along the height direction of the cavity.

[0010] Optionally, the driving mechanism is a cylinder, a piston rod of the cylinder is fixedly connected to the movable plate, and the cylinder is used to drive the movable plate to move along the height direction of the cavity.

[0011] Optionally, the surface of the movable plate facing away from the cavity is a first surface, an edge of the first surface is recessed with a mounting position, a sealing ring is provided on the mounting position, and the sealing ring extends out of the edge of the movable plate.

[0012] Optionally, it further includes multiple connecting rods, one end of each of the connecting rods is fixedly connected to the piston rod, and the other end of each of the connecting rods is provided with a pressure block, and the multiple pressure blocks are arranged around the sealing ring so that the multiple pressure blocks are pressed on the sealing ring at the same time.

[0013] Optionally, a movable placement rack is provided on the bottom wall of the cavity, and the placement rack is formed with a plurality of placement positions distributed along its height direction, and the placement positions are used to place a placement plate, and the battery cell is placed in the sealed cavity through the placement plate.

[0014] Optionally, a plurality of through holes are provided on the surface of the placement plate.

[0015] Optionally, a heat insulation layer is attached to the inner wall of the sealed cavity.

[0016] Optionally, it also includes: a monitoring display, a temperature sensor and a vacuum gauge, the monitoring display is arranged on the side of the box door away from the cavity, the temperature sensor and the vacuum gauge are arranged in the sealed cavity, and the temperature sensor and the vacuum gauge are electrically connected to the monitoring display respectively.

[0017] In the technical solution of the present utility model, a vacuum baking oven is provided with a box body, a door, and a movable plate. The box body forms a cavity, and the side wall of the cavity is provided with an opening connected to the outside world. The door is movably connected to the box body and can open or close the opening of the cavity. The movable plate is movable along the height direction of the cavity. The movable plate is movably arranged relative to the bottom wall of the cavity and encloses the bottom wall of the cavity to form a sealed cavity. The movable plate can be moved within the cavity to change the volume of the sealed cavity. It can be understood that the technical solution of the present utility model solves the problem of energy waste caused by the ineffective utilization of a portion of the cavity volume when processing battery cells of different specifications and different quantities, shortens the heating time, improves the drying efficiency of the battery cells, and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1This is a structural diagram of a battery cell vacuum baking device according to an embodiment of the present invention;

[0020] Figure 2 This is a front view of a battery cell vacuum baking device according to an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of a movable plate with a connecting rod according to an embodiment of the present invention;

[0022] Figure 4 A cross-sectional view of a movable plate with a pressing member according to an embodiment of the present invention;

[0023] Explanation of the accompanying reference numerals: 100 - vacuum baking oven; 100a - cavity; 110 - box body; 111 - thermal insulation layer; 110a - vacuum joint 1; 110b - vacuum joint 2; 120 - oven door; 130 - movable plate; 131 - piston rod; 132 - sealing ring; 133 - connecting rod; 134 - pressing block; 135 - pressed part; 140 - heater; 150 - placement rack; 151 - placement plate; 160 - monitoring display.

[0024] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] In view of this, the main purpose of the present invention is to propose a vacuum baking oven, which aims to solve the problem of energy waste caused by the ineffective utilization of part of the cavity volume when processing battery cells of different specifications and different quantities, shorten the heating time, improve the drying efficiency of the battery cells, and save energy.

[0029] See also Figures 1 to 2 As shown, in one embodiment of the present invention, a vacuum baking oven includes: a box body, the box body forming a cavity, and the side wall of the cavity is provided with an opening connected to the outside world; a box door, the box door is movably provided at the opening of the cavity, and is used to open or close the box body; a heater, the heater is provided on the bottom wall of the cavity; and a movable plate, the movable plate can be moved along the height direction of the cavity, the movable plate can be movably provided relative to the bottom wall of the cavity and enclosed with the bottom wall of the cavity to form a sealed cavity, and the cavity wall of the sealed cavity is connected to a vacuum joint 1 and a vacuum joint 2.

[0030] The use process of the technical solution of the utility model is as follows: determine the optimal volume of the cavity according to the specifications and quantity of the battery cells that need to be dried, adjust the movable plate, place the battery cells into the cavity of the battery cell vacuum baking device, close the box door, use an external vacuum pump to vacuum the cavity through the vacuum port, and use a heater to heat the cavity after reaching a suitable vacuum degree. After reaching a predetermined temperature, start baking the battery cells in the cavity. After the battery cells are dried, use an external vacuum pump to release the vacuum state of the cavity through the vacuum port. After the battery cells cool to the specified temperature, open the box door, take out the battery cells, and the drying is completed.

[0031] It should be noted that the shape of the box and the cavity of the technical solution of the present utility model is not only Figure 1The described rectangular parallelepiped can also be a cylinder. The shape of the movable plate also changes with the shape of the box body and the cavity. It is only necessary for the edge of the movable plate to be tightly fitted with the box body wall (i.e., the cavity wall) and the inner wall of the box door. The sealing ring on it is also tightly attached to the edge of its upper surface according to the shape of the heating plate to play a sealing role. The placement of the battery cells of the technical solution of the present invention can also be changed according to actual needs, including but not limited to: horizontal stacking, vertical placement, hanging, etc. The connection method between the box door and the box body of the present invention is selected according to actual production conditions and production needs, including but not limited to: sliding up and down or left and right to open and close, single-axis rotation to open and close, etc. The position of the heater of the present invention in the cavity is selected according to actual production conditions and production needs. It is generally selected on the side wall of the sealed cavity, and the bottom wall of the sealed cavity can also be selected. It is only necessary to adaptively adjust the position of the vacuum and the position of the movable plate.

[0032] See also Figures 1 to 2 As shown, in one embodiment of the present invention, a drive mechanism is further included. The drive mechanism used to drive the movable plate in the present invention is selected based on actual production conditions and production needs, including but not limited to pneumatic drive, hydraulic drive, electric drive, and manual drive. The drive mechanism is located on the side of the movable plate facing away from the bottom wall of the cavity, that is, generally located at the top of the drying box. The remaining drive mechanism only needs to drive the movable plate to move in the height direction, and the remaining locations of the drive mechanism can also be located elsewhere.

[0033] See also Figures 1 to 2 As shown, in one embodiment of the present invention, the drive mechanism is a cylinder connected to and powered by an external air source. The cylinder comprises a cylinder body, a piston, and a piston rod. The piston is movably disposed within the cylinder body, one end of the piston rod is connected to the piston, and the other end of the piston rod is fixedly connected to the movable plate. In this embodiment, only one cylinder is installed, and the number of cylinders can be selected based on actual work requirements. The cylinder drives the piston through the external air source, which in turn drives the movable plate to move vertically within the cavity, thereby changing the volume of the sealed cavity, shortening the heating and vacuuming time, and improving the drying efficiency of the battery cells.

[0034] See also Figures 3 and 4 As shown, in one embodiment of the present invention, the surface of the movable plate facing away from the cavity is defined as the first surface, and a mounting position is recessed on the edge of the first surface. The mounting position is used to install a sealing ring. The width of the mounting position is determined according to the sealing ring to be installed, and the depth of the mounting position is selected according to actual requirements. The sealing ring extends out of the edge of the movable plate. When the box door is closed, the sealing ring fits tightly with the side wall of the box body and the surface of the box door facing the cavity, which can ensure the airtightness in the sealed cavity, shorten the vacuuming time, and shorten the battery cell drying time as a whole.

[0035] See also Figures 3 and 4As shown, in one embodiment of the present invention, only one cylinder is installed, and a plurality of connecting rods are installed on the piston rod of the cylinder as needed. One end of these connecting rods is fixed to the same position of the piston rod, which can ensure that the connecting rods move together with the piston rod. There is a pressure block on the other end of these connecting rods. These connecting rods with pressure blocks are evenly distributed around the piston rod, so that the pressure blocks are evenly pressed on the sealing ring, which plays a fixing role on the sealing ring and can effectively reduce the deformation of the sealing ring caused by the movement of the movable plate, thereby ensuring the airtightness of the baking oven to a certain extent, shortening the vacuuming time, and improving the drying efficiency.

[0036] See also Figures 3 and 4 As shown, in one embodiment of the present invention, a pressing member is provided on the first surface near the mounting position. One end of the pressing member is movably connected to the first surface. The connection method can be a pin, screw, or spring connection. The pin connection utilizes a cylindrical, shaft-like mechanical component that presses the pin into holes of the same diameter on the two components to achieve positioning or connection of the components. Pin types include straight rods, threaded ends, and stepped positioning pins, each suitable for different application scenarios. The screw connection allows the position of the pressing member to be adjusted within a certain range to accommodate different installation requirements. The spring connection, through the elastic deformation of the spring, allows the pressing member to adapt to different operating conditions and reduces the impact of the movable plate movement on the sealing ring. The various connection methods make the pressing member easier to open. During use, the other end of the pressing member presses against the sealing ring, effectively reducing deformation of the sealing ring caused by the movement of the movable plate, ensuring the airtightness of the oven to a certain extent, shortening the vacuuming time, and improving the drying efficiency. When the sealing ring is severely worn, it can be opened relatively easily, so that the sealing ring can be replaced at any time, thereby ensuring the airtightness of the baking oven, shortening the vacuuming time and improving the drying efficiency.

[0037] See also Figures 1 to 2 As shown, in one embodiment of the present invention, a placement rack is further included. The placement rack and the main body of the battery cell vacuum baking device are designed to be separated and placed on the bottom wall of the cavity that is not covered by the heater. There are no special requirements for the material of the placement rack. The material can be a material with a melting point higher than the drying temperature, such as ordinary stainless steel. The placement rack adopts a multi-layer design with multiple detachable placement plates. The placement plates are stacked at intervals along the height direction. The placement rack can adjust the placement plates according to the number of battery cells that need to be dried, that is, adjust the height of the placement rack. A number of through holes are provided on the surface of the placement plate, which can effectively increase the drying efficiency of the battery cells. The larger the through holes, the more the drying efficiency of the battery cells can be increased. A meshed plate surface can also be used. When in use, the placement rack with the number of layers adjusted according to actual needs can be placed into the cavity.

[0038] See also Figures 1 to 2As shown, in one embodiment of the present invention, the surface of the movable plate facing the heater, the cavity walls, and the surface of the door facing the cavity are all covered with a thermal insulation layer. That is, all the walls of the sealed cavity are covered with a thermal insulation layer. The use of a thermal insulation layer is crucial for improving heating efficiency. It effectively reduces heat loss through the cavity walls, allowing more heat to be retained within the sealed cavity and directly applied to the battery cells. This concentrated heat not only speeds up the drying process but also helps achieve more uniform heating, thereby improving the quality and consistency of battery cell drying.

[0039] See also Figures 1 to 2 As shown, in one embodiment of the utility model, it also includes: a monitoring display, a temperature sensor and a vacuum gauge, the monitoring display is arranged outside the door, the temperature sensor and the vacuum gauge are arranged in the sealed cavity, and the temperature sensor, the vacuum gauge are electrically connected to the monitoring display. The monitoring display is arranged outside the box door, which is convenient for the operator to view and adjust the parameters intuitively. The temperature sensor and the vacuum gauge are installed in the sealed cavity, and they directly measure the environmental conditions in the cavity to ensure the accuracy of the data. These sensors are connected to the monitoring display through electrical connections to form a closed-loop control system, which enables the baking oven to automatically adjust the temperature and vacuum degree to achieve the best baking effect, control the heating time, further improve efficiency, and save energy.

[0040] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vacuum baking oven, characterized in that: include: A box body is formed with a cavity, and a side wall of the cavity is provided with an opening communicating with the outside; a box door, the box door being movably provided at the opening of the cavity and being used for opening or closing the box body; a heater, the heater being disposed on the bottom wall of the cavity; as well as A movable plate is movable along the height direction of the cavity. The movable plate is movably arranged relative to the bottom wall of the cavity and encloses the bottom wall of the cavity to form a sealed cavity. The cavity wall of the sealed cavity is connected to a vacuum joint.

2. The vacuum baking oven according to claim 1, wherein It also includes a driving mechanism, which is arranged on a side of the movable plate away from the bottom wall of the cavity, and is connected to the movable plate to enable the movable plate to move along the height direction of the cavity.

3. The vacuum baking oven according to claim 2, wherein: The driving mechanism is a cylinder, a piston rod of the cylinder is fixedly connected to the movable plate, and the cylinder is used to drive the movable plate to move along the height direction of the cavity.

4. The vacuum baking oven according to claim 3, wherein The surface of the movable plate facing away from the cavity is a first surface. An edge of the first surface is concavely provided with a mounting position. A sealing ring is provided on the mounting position. The sealing ring extends out of the edge of the movable plate.

5. The vacuum baking oven according to claim 4, wherein: It also includes multiple connecting rods, one end of each of the connecting rods is fixedly connected to the piston rod, and the other end of each of the connecting rods is provided with a pressure block, and the multiple pressure blocks are arranged around the sealing ring so that the multiple pressure blocks are pressed on the sealing ring at the same time.

6. The vacuum baking oven according to any one of claims 1 to 5, characterized in that The bottom wall of the cavity is provided with a movable placement rack, and the placement rack is formed with a plurality of placement positions distributed along its height direction, and the placement positions are used to place placement plates, and the battery cells are placed in the sealed cavity through the placement plates.

7. The vacuum baking oven according to claim 6, wherein: The plate surface of the placement plate is provided with a plurality of through holes.

8. The vacuum baking oven according to any one of claims 1 to 5, characterized in that The inner wall of the sealed cavity is adhered with a heat insulation layer.

9. The vacuum baking oven according to any one of claims 1 to 5, characterized in that Also includes: A monitoring display, a temperature sensor and a vacuum gauge, wherein the monitoring display is arranged on the side of the box door away from the cavity, the temperature sensor and the vacuum gauge are arranged in the sealed cavity, and the temperature sensor and the vacuum gauge are electrically connected to the monitoring display respectively.

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