Battery cell hot pressing device and battery cell production equipment

Abstract

The utility model relates to the field of battery cell production, and discloses a battery cell hot-pressing device and battery cell production equipment.The battery cell hot-pressing device comprises a rack, a linear driving assembly and a hot-pressing piece, the linear driving assembly is fixedly installed on the rack, the hot-pressing piece is fixedly installed at the moving end of the linear driving assembly, and the linear driving assembly drives the hot-pressing piece to move in the preset direction; a cavity is formed in the hot-pressing piece, the hot-pressing piece is provided with a hot-pressing face, air holes are formed in the hot-pressing face, and the air holes communicate with the cavity. When the linear driving assembly is separated from the battery cell, gas is introduced into the cavity, and then the gas is blown towards the battery cell through the gas holes, so that the battery cell is separated from the hot-pressing surface, and adhesion between the hot-pressing surface and the battery cell is prevented.

Description

Technical Field

[0001] The present application relates to the field of battery cell production, and in particular to a battery cell hot pressing device and battery cell production equipment. Background Art

[0002] As the core component of a battery system, the manufacturing quality of the battery cell is directly related to the overall performance and service life of the battery. During the battery cell assembly process, hot pressing, as a key technical step, plays a vital role in improving the tightness of the internal components, optimizing electrical conductivity, and ensuring battery safety.

[0003] Traditionally, hot pressing of battery cells relies on applying pressure to the cell components at high temperatures to promote close bonding between key materials such as the positive and negative electrodes, separators, and electrolytes. This reduces interfacial resistance and improves the battery's energy conversion efficiency and discharge performance. This technology not only ensures the stability of the battery's internal structure but also significantly enhances its cycle stability and safety. It is an indispensable technical support for modern electronic products such as electric vehicles, smartphones, laptops, and large-scale energy storage systems.

[0004] However, in the actual operation of the battery cell hot pressing process, a common problem is that after the hot pressing is completed, when the hot pressing plate is lifted, a certain degree of adhesion often occurs due to the high temperature and pressure between the battery cell assembly and the hot pressing plate. This not only increases the difficulty of removing the battery cell, but may also cause damage to the battery cell structure, affecting the quality of the final product. Utility Model Content

[0005] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a battery cell hot pressing device and battery cell production equipment.

[0006] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0007] This application provides:

[0008] A battery cell hot pressing device, comprising:

[0009] frame;

[0010] A linear drive assembly, wherein the linear drive assembly is fixedly mounted on the frame;

[0011] A hot pressing part is fixedly mounted on the moving end of the linear drive assembly, and the linear drive assembly drives the hot pressing part to move along a preset direction. A chamber is provided inside the hot pressing part, and the hot pressing part has a hot pressing surface. Pores begin to be formed on the hot pressing surface, and the pores are connected to the chamber.

[0012] Furthermore, the rack includes a carrier plate, N guide members are installed on the carrier plate, and N≥2 is satisfied. A fixing plate is fixedly installed on the end of the guide member away from the carrier plate.

[0013] Furthermore, the linear drive assembly includes a follower and a sliding member, the sliding member is slidably mounted on the guide member, the follower is slidably connected to the guide member through the sliding member, a linear drive module is fixedly mounted on the fixed plate, and the follower is fixedly mounted on the driving end of the linear drive module.

[0014] Furthermore, the hot pressing part includes:

[0015] A hot pressing plate, wherein the hot pressing plate has M mounting holes, and M≥1;

[0016] An electric heating element is arranged in the mounting hole.

[0017] Furthermore, a heat insulation plate is fixedly mounted on the hot pressing member, and the hot pressing member is connected to the moving end of the linear drive assembly through the heat insulation plate.

[0018] Furthermore, a positioning assembly is provided between the moving end of the linear drive assembly and the frame, and the positioning assembly includes a column fixedly mounted on the moving end of the linear drive assembly, a triggering member is fixedly mounted on the column, a fixing member is fixedly mounted on the frame, and A photoelectric sensors are mounted on the fixing member, satisfying: A≥1.

[0019] Furthermore, a pressure sensor is fixedly mounted on the moving end of the linear drive assembly.

[0020] Furthermore, the electric heating element is electrically connected to a temperature controller, and the temperature controller is used to control the temperature generated by the electric heating element.

[0021] Furthermore, a cover is fixedly mounted on the outer surface of the frame.

[0022] The present application provides a battery cell production device, comprising any of the battery cell hot pressing devices described above.

[0023] When the linear drive assembly is separated from the battery cell, the present application separates the battery cell from the hot pressing surface by introducing gas into the chamber and then blowing the gas toward the battery cell through the air holes, thereby preventing adhesion between the hot pressing surface and the battery cell.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The figure shows the overall structure of the battery cell hot pressing device of the present application;

[0027] Figure 2 A schematic diagram of the explosion state of the battery cell hot pressing device of the present application is shown;

[0028] Figure 3 A schematic diagram showing the connection state of the hot pressing member and the heat insulation board of the present application is shown;

[0029] Figure 4 A schematic diagram of the explosion state of the hot pressed part of the present application is shown;

[0030] Figure 5 Shows a schematic diagram of the cross-sectional state of the hot pressing plate of the present application;

[0031] Figure 6 A schematic diagram of the positioning component structure of the present application is shown.

[0032] Description of main component symbols:

[0033] 100. Frame; 110. Carrier plate; 120. Guide member; 130. Fixed plate; 200. Linear drive assembly; 210. Follower; 220. Sliding member; 230. Linear drive module; 300. Hot pressing member; 310. Hot pressing plate; 320. Mounting hole; 330. Electric heating member; 400. Chamber; 500. Air hole; 600. Heat insulation board; 700. Positioning assembly; 710. Column; 720. Trigger member; 730. Fixing member; 740. Photoelectric sensor; 800. Pressure sensor; 900. Temperature controller; 1000. Cover. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0037] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0038] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] In the hot pressing process of the battery cell, after the hot pressing is completed, there is high temperature and pressure between the hot pressing piece 300 and the battery cell. When lifted, the hot pressing piece 300 is easily adhered to the battery cell, thereby increasing the difficulty of removing the battery cell, and may even cause damage to the battery cell in severe cases. For this reason, the present application mainly opens a chamber 400 in the hot pressing piece 300, and opens an air hole 500 connected to the chamber 400 on the hot pressing surface of the hot pressing piece 300. When the hot pressing piece 300 needs to be separated from the battery cell, a certain pressure of gas can be introduced into the chamber 400, and then the gas is blown toward the battery cell through the air hole 500, thereby reducing the bonding force between the hot pressing surface of the hot pressing piece 300 and the battery cell, making it easier to remove the battery cell.

[0040] Specifically, the present application provides a battery cell hot pressing device, including a frame 100, a linear drive component 200 and a hot pressing piece 300, wherein the linear drive component 200 is fixedly installed on the frame 100, the hot pressing piece 300 is fixedly installed on the moving end of the linear drive component 200, the linear drive component 200 drives the hot pressing piece 300 to move along a preset direction, a chamber 400 is opened inside the hot pressing piece 300, the hot pressing piece 300 has a hot pressing surface, pores 500 begin to appear on the hot pressing surface, and the pores 500 are connected to the chamber 400.

[0041] See Figure 1 、 Figure 2 and Figure 5 As shown, when the battery cell needs to be pressed, the battery cell is placed at the bottom of the rack 100, that is, directly below the hot pressing piece 300, and the linear drive assembly 200 drives the hot pressing piece 300 to move downward. As the hot pressing piece 300 continues to move downward, the hot pressing surface of the hot pressing piece 300 contacts the battery cell, thereby achieving hot pressing treatment of the battery cell. When the hot pressing treatment is completed and the hot pressing piece 300 needs to be separated from the battery cell, a certain pressure of gas can be introduced into the chamber 400, and the gas will be blown toward the battery cell through the air hole 500, thereby reducing the bonding force between the hot pressing surface of the hot pressing piece 300 and the battery cell, so that the battery cell can be separated from the hot pressing piece 300.

[0042] It should be noted that the hot pressing surface here refers to the side of the hot pressing member 300 facing the battery cell, that is, the side of the hot pressing member 300 in contact with the battery cell.

[0043] In this embodiment, there are multiple air holes 500, and the number is not limited. Specifically, the area of ​​the air hole 500 on the hot pressing surface of the hot pressing part 300 can be adapted to the shape of the battery cell, that is, the contact area between the battery cell and the hot pressing surface. The size of the air hole 500 is not limited here, as long as it can achieve blowing toward the battery cell.

[0044] The rack 100 includes a carrier plate 110 , on which N guide members 120 are mounted, satisfying: N≧2. A fixing plate 130 is fixedly mounted at the end of the guide member 120 away from the carrier plate 110 .

[0045] See Figure 2 As shown, in order to enable the placement of the battery cells and meet the installation requirements of the linear drive assembly 200, a plurality of guide members 120 are fixedly installed on the upper surface of the carrier 110, and a fixed plate 130 is fixedly installed on the top of the plurality of guide members 120, that is, the carrier 110, the guide members 120 and the fixed plate 130 form a frame for hot pressing the placement of the battery cells and also for the installation of the linear drive assembly 200.

[0046] In the embodiment, there are four guide members 120, that is, N is 4, and the four guide members 120 are fixedly installed at the four corners of the carrier plate 110 respectively; further, the guide member 120 is a cylinder, which, on the one hand, serves to connect and support the fixed plate 130, and on the other hand, also serves as a guide. The guiding function of the guide member 120 is described in detail below and will not be repeated here.

[0047] In this embodiment, the carrier plate 110 and the fixing plate 130 are both rectangular plates. The carrier plate 110 is mainly used for placing the battery cells, and the fixing plate 130 is mainly used for installing the linear drive assembly 200 .

[0048] The linear drive assembly 200 includes a follower 210 and a sliding member 220. The sliding member 220 is slidably installed on the guide member 120. The follower 210 is slidably connected to the guide member 120 through the sliding member 220. A linear drive module 230 is fixedly installed on the fixed plate 130. The follower 210 is fixedly installed on the driving end of the linear drive module 230.

[0049] participate Figure 1 and Figure 2 As shown, sliding members 220 are installed on the four guide members 120, and the sliding members 220 slide in cooperation with the guide members 120. Followers 210 are connected between the four sliding members 220, and the hot pressing member 300 is installed on the side of the follower 210 facing the battery cell. The bottom surface of the fixed plate 130 is fixedly installed with a linear drive module 230, and the upper surface of the follower 210 is connected to the driving end of the linear drive module 230. Under the sliding cooperation between the sliding members 220 and the guide members 120, the linear drive module 230 drives the follower 210 to move up and down, that is, when the battery cell needs to be hot pressed, the linear drive module 230 drives the follower 210 to move downward, and when the hot pressing is completed, the linear drive module 230 drives the follower 210 to move upward.

[0050] The existing structure for realizing the lifting function usually adopts a servo motor plus a synchronous pulley or an electric cylinder as the driving force, but the structure of the servo motor plus the synchronous pulley is relatively complex and occupies a large space, and the electric cylinder structure also occupies space. For this reason, in this embodiment, the linear drive module 230 is mainly composed of a motor and an elevator. The motor is specifically a servo motor, and the elevator can be a worm gear elevator. The motor provides power for the elevator, and the elevator converts the rotational force of the motor into the power for lifting the driven part 210. While meeting the lifting needs, it also reduces the space occupied.

[0051] The hot pressing element 300 includes a hot pressing plate 310 and an electric heating element 330 , wherein the hot pressing plate 310 is provided with M mounting holes 320 , satisfying: M ≥ 1; and the electric heating element 330 is disposed in the mounting holes 320 .

[0052] Specific reference Figure 3 and Figure 4 As shown, in order to enable the hot pressing member 300 to generate a certain amount of heat to achieve hot pressing of the battery cell, a plurality of mounting holes 320 are opened in the hot pressing plate 310, and an electric heating member 330 is installed in each mounting hole 320. The electric heating member 330 generates heat and transfers the heat to the hot pressing plate 310. The hot pressing plate 310 is pressed down to contact the battery cell, so that the heat is also transferred to the battery cell, completing the hot pressing process.

[0053] In this embodiment, there are three mounting holes 320, that is, M is 3, and each mounting hole 320 is independent of each other and does not affect each other. Specifically, the mounting holes 320 are evenly spaced and arranged on the hot pressing plate 310, specifically on the side wall of the hot pressing plate 310. The mounting holes 320 and the chamber 400 are independent of each other and are not connected to each other. The mounting holes 320 can also be other numbers, which is not limited here. The electric heating element 330 can be an electric heating rod, which can convert electrical energy into thermal energy to provide thermal energy for the hot pressing process of the hot pressing plate 310.

[0054] A heat insulating plate 600 is fixedly mounted on the hot pressing member 300 , and the hot pressing member 300 is connected to the moving end of the linear drive assembly 200 via the heat insulating plate 600 .

[0055] See Figures 1 to 3 As shown, the electric heating element 330 provides heat for the hot pressing plate 310. In order to prevent the heat on the hot pressing plate 310 from diffusing to the follower 210 and causing damage due to the high temperature, or to prevent the high temperature of the follower 210 from affecting other components, a heat insulation plate 600 is fixedly installed on the upper surface of the hot pressing plate 310 to block the high temperature from the hot pressing plate 310. That is, in this embodiment, the follower 210 is the moving end of the linear drive assembly 200, and the hot pressing plate 310 is fixedly connected to the follower 210 through the heat insulation plate 600.

[0056] A positioning assembly 700 is provided between the moving end of the linear drive assembly 200 and the frame 100. The positioning assembly 700 includes a column 710 fixedly mounted on the moving end of the linear drive assembly 200. A trigger member 720 is fixedly mounted on the column 710. A fixing member 730 is fixedly mounted on the frame 100. A photoelectric sensor 740 is mounted on the fixing member 730, satisfying: A ≥ 1.

[0057] See Figure 1 and Figure 6 As shown, in order to enable the hot pressing part 300 to move accurately to the predetermined position, a column 710 is installed at the moving end of the linear drive assembly 200, that is, the column 710 is fixed on the upper surface of the follower 210, and in order to enable the triggering part 720 on the column 710 to move synchronously with the follower 210 to trigger the photoelectric sensor 740, an avoidance hole (not marked in the figure) is opened on the fixed plate 130 for the column 710 to move up and down. Specifically, the fixing part 730 is fixedly installed on the upper surface of the fixing plate 130. There are three photoelectric sensors 740 on the fixing part 730, that is, A in the above is 3, and the three photoelectric sensors 740 are arranged on the fixing part 730 along the vertical height direction. 0 for installation, it should be noted that the position of the uppermost photoelectric sensor 740 is the maximum stroke position of the hot pressing part 300 moving upward, the position of the lowermost photoelectric sensor 740 is the maximum stroke position of the hot pressing part 300 moving downward, and the middle photoelectric sensor 740 is the origin position, that is, after each battery cell hot pressing is completed, the follower 210 will drive the column 710 and the trigger part 720 to move to the photoelectric sensor 740 in the middle position, that is, move to the origin position; through the cooperation of the three photoelectric sensors 740 and the trigger part 720, the linear drive module 230 is controlled to drive the follower 210 to move to the predetermined position, thereby controlling the moving distance of the hot pressing part 300.

[0058] In this embodiment, the trigger member 720 is a shielding piece. When the trigger member 720 moves to the position of the photoelectric sensor 740, the photoelectric signal at this position is blocked to complete the triggering.

[0059] A pressure sensor 800 is fixedly mounted on the moving end of the linear drive assembly 200 .

[0060] See Figure 2 As shown, in order to prevent the battery cell from being damaged due to excessive downward thermal pressure, a pressure sensor 800 is installed at the moving end of the linear drive component 200, that is, the pressure sensor 800 is installed at the driving end of the linear drive module 230, and the other end of the pressure sensor 800 is fixedly connected to the follower 210. The follower 210 is connected to the linear drive module 230 through the pressure sensor 800, thereby detecting the pressure of the battery cell and keeping the downward pressure on the battery cell within a safe range.

[0061] The electric heating element 330 is electrically connected to a temperature controller 900 , and the temperature controller 900 is used to control the temperature generated by the electric heating element 330 .

[0062] See Figure 1 and Figure 2 As shown, in order to keep the hot pressing plate 310 at a preset temperature, the temperature generated by the electric heating element 330 is controlled by the temperature controller 900 to prevent the temperature from being too low or too high, which may cause the hot pressing of the battery cell to fail to achieve the desired effect.

[0063] See Figure 1 and Figure 2 As shown, a cover 1000 is fixedly mounted on the outer surface of the rack 100 , and the cover 1000 protects the components in the rack 100 .

[0064] The present application also provides a battery cell production equipment, including any of the battery cell hot pressing devices described above. Therefore, the battery cell production equipment has all the technical effects of the battery cell hot pressing device of any of the above embodiments, and the specific effects will not be elaborated here.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A battery core hot pressing device, characterized in that: include: Rack(100); A linear drive assembly (200), wherein the linear drive assembly (200) is fixedly mounted on the frame (100); A hot pressing piece (300) is fixedly mounted on a movable end of the linear drive assembly (200), the linear drive assembly (200) drives the hot pressing piece (300) to move along a preset direction, a chamber (400) is provided inside the hot pressing piece (300), the hot pressing piece (300) has a hot pressing surface, pores (500) are formed on the hot pressing surface, and the pores (500) are connected to the chamber (400).

2. The battery core hot pressing device according to claim 1, characterized in that: The frame (100) comprises a carrier plate (110), N guide members (120) are mounted on the carrier plate (110), and N≥2 is satisfied. A fixing plate (130) is fixedly mounted on the end of the guide member (120) away from the carrier plate (110).

3. The battery core hot pressing device according to claim 2, characterized in that: The linear drive assembly (200) includes a driven member (210) and a sliding member (220), wherein the sliding member (220) is slidably mounted on the guide member (120), and the driven member (210) is slidably connected to the guide member (120) via the sliding member (220). A linear drive module (230) is fixedly mounted on the fixed plate (130), and the driven member (210) is fixedly mounted on the driving end of the linear drive module (230).

4. The battery core hot pressing device according to claim 1, characterized in that: The hot pressing part (300) comprises: A hot pressing plate (310), wherein M mounting holes (320) are provided in the hot pressing plate (310), satisfying: M≥1; An electric heating element (330), wherein the electric heating element (330) is arranged in the mounting hole (320).

5. The battery core hot pressing device according to claim 1, characterized in that: A heat insulation plate (600) is fixedly mounted on the hot pressing member (300), and the hot pressing member (300) is connected to the moving end of the linear drive assembly (200) via the heat insulation plate (600).

6. The battery core hot pressing device according to claim 1, characterized in that: A positioning assembly (700) is provided between the moving end of the linear drive assembly (200) and the frame (100), the positioning assembly (700) comprising a column (710) fixedly mounted on the moving end of the linear drive assembly (200), a triggering member (720) fixedly mounted on the column (710), a fixing member (730) fixedly mounted on the frame (100), and A photoelectric sensors (740) mounted on the fixing member (730), satisfying the following condition: A≥1.

7. The battery core hot pressing device according to claim 1, characterized in that: A pressure sensor (800) is fixedly mounted on the movable end of the linear drive assembly (200).

8. The battery core hot pressing device according to claim 4, characterized in that: The electric heating element (330) is electrically connected to a temperature controller (900), and the temperature controller (900) is used to control the temperature generated by the electric heating element (330).

9. The battery core hot pressing device according to claim 1, characterized in that: A cover (1000) is fixedly mounted on the outer surface of the frame (100).

10. A battery cell production device, characterized in that: The invention comprises the battery cell hot pressing device according to any one of claims 1 to 9.

Images