Battery press-fitting device

Abstract

The application relates to a battery press-fitting device, which comprises a centering positioning mechanism for clamping and positioning a top cover so that the top cover and a battery cell installed on the top cover are jointly kept in a centering position; a press-fitting assembly arranged above the centering positioning mechanism; and a flaring assembly in driving connection with the press-fitting assembly, the flaring assembly being used for clamping a shell and vertically aligning the shell with the battery cell and the top cover, and the flaring assembly being used for flaring processing of a concave part in the middle of the shell, and the press-down assembly drives the flaring assembly and the shell to move downward to complete the battery cell into the shell and the top cover and the shell cover. Since the flaring assembly is used for flaring processing of the concave part in the middle of the shell, the concave part can prevent the battery cell from being scratched during press-fitting, the battery cell is prevented from being damaged, the press-fitting yield can be greatly improved, and the product processing quality is ensured.

Description

Technical Field

[0001] This application relates to the technical field of battery processing, and in particular to a battery pressing device. Background Technology

[0002] Battery processing mainly refers to the assembly process of installing and fixing the battery cell, casing, and top cover. For example, for the inverted casing type, the battery cell covered with Mylar is mechanically positioned with the casing through a centering positioning mechanism. Then, the casing, battery cell, and top cover are pressed and welded together from top to bottom by external power such as an electric cylinder.

[0003] However, for some high-capacity batteries, the length of the casing and the cell is usually large. Due to the insufficient rigidity of the casing structure, the middle part of the casing is prone to concave deformation. When the casing is pressed down, the concave part in the middle is prone to rubbing against the Mylar layer of the cell, causing damage to the cell and resulting in a low pressing yield. Summary of the Invention

[0004] Therefore, it is necessary to provide a battery pressing device to address the problem of scratching and damaging the battery cells during the pressing process in existing technologies, which reduces the pressing yield.

[0005] This application provides a battery pressing device, which includes:

[0006] A centering positioning mechanism is used to clamp and position the top cover so that the top cover and the battery cell mounted on the top cover are held together in a centered position; and,

[0007] The housing driving mechanism includes a pressing assembly and a flaring assembly. The pressing assembly is spaced above the centering and positioning mechanism. The flaring assembly is driven to connect with the pressing assembly. The flaring assembly is used to clamp the housing and vertically align the housing with the battery cell and the top cover. The flaring assembly is also used to flare the concave portion in the middle of the housing. The pressing assembly drives the flaring assembly and the housing to move downward to complete the insertion of the battery cell into the housing and the closing of the top cover with the housing.

[0008] This battery press-fit device employs an inverted casing method to assemble the top cover, battery cells, and casing. Specifically, the battery cells are first assembled with the top cover, positioned above it, with the casing above the cells. The casing moves downwards to insert the battery cells into the casing, simultaneously closing the top cover to facilitate subsequent welding. In detail, during the press-fit process, the top cover is first clamped and positioned by a centering and positioning mechanism, ensuring that the top cover and the battery cells mounted on it remain in a centered position. Next, the flaring assembly of the casing drive mechanism grips the casing, vertically aligning it with the battery cells and top cover below. Then, the flaring assembly flares outwards the concave areas of the casing (stretching and expanding the concave areas outwards to restore the casing to a flat state or a certain degree of outward expansion). Finally, the press-fit assembly drives the flaring assembly and the casing downwards, allowing the battery cells to be installed. The battery is pre-assembled by inserting the casing into the housing and closing the top cover with the casing. During this process, the flaring assembly continuously flares the concave part in the middle of the casing, preventing the concave part from scratching the cell during pressing, thus avoiding damage to the cell. This greatly improves the pressing yield and ensures product processing quality. In addition, this application integrates the flaring assembly into the pressing assembly, which reduces the footprint of the entire battery pressing device. Furthermore, during the pressing assembly's downward drive of the casing and top cover to close, the flaring assembly always acts on the casing, preventing the middle of the casing from contracting inward and scratching the cell during the closing process.

[0009] The technical solution of this application will be further described below:

[0010] In one embodiment, the centering and positioning mechanism includes a first centering and positioning component and a second centering and positioning component arranged laterally at intervals. Both the first and second centering and positioning components include a base, a first driving member, a first movable block, and a plurality of first positioning blocks. The first driving member is disposed on the base. The first movable block is drivenly connected to the first driving member and can move towards or away from the long side of the top cover. The plurality of first positioning blocks are spaced apart from the first movable block and arranged along the long side of the top cover. This achieves corrective positioning of the top cover and the battery cell along a first direction (e.g., the X-axis direction).

[0011] In one embodiment, both the first and second centering positioning components further include a second driving member, a second movable block, a third movable block, a second positioning pressure block, and a third positioning pressure block. The second driving member is disposed on the first movable block, and the second and third movable blocks are respectively drivenly connected to the second driving member. The second driving member is used to drive the second and third movable blocks to move closer to or further away from each other along a straight path parallel to the long side of the top cover. The second positioning pressure block is disposed on the second movable block and is used to abut against one of the short sides of the top cover, and the third positioning pressure block is disposed on the third movable block and is used to abut against the other short side of the top cover. This achieves the correction and positioning of the top cover and the battery cell along a second direction (e.g., the Y-axis direction).

[0012] In one embodiment, the centering and positioning mechanism further includes a torque sensor, which is electrically connected to the first driving member and the second driving member;

[0013] And / or, the centering and positioning mechanism further includes a pressure sensor, which is disposed on the first positioning block, the second positioning block, and the third positioning block. This prevents excessive clamping force on the top cover from damaging it.

[0014] In one embodiment, the press-fit assembly includes a bracket, a press-down drive component, and a press-down actuation component. The press-down drive component is disposed on the bracket and is used to output a downward linear driving force. The press-down actuation component is drivenly connected to the press-down drive component, and the flaring component is assembled with the press-down actuation component. The press-down actuation component and the flaring component are simultaneously driven to descend, thereby driving the housing to actively press-fit the battery cell and top cover.

[0015] In one embodiment, the pressing actuation assembly includes a mounting plate, a connector, a lower pressure plate, and a pressing block. The mounting plate is connected to the drive head of the pressing drive component. The lower pressure plate is assembled with the mounting plate via the connector. The pressing block is disposed on the side of the lower pressure plate opposite to the mounting plate. Pushing the mounting plate, connector, and lower pressure plate downwards together causes the pressing block to push the bottom of the housing, allowing the opening of the housing to fit the battery cell (i.e., the battery cell is inserted into the housing) and ultimately fit against the top cover, thereby completing the pressing operation.

[0016] In one embodiment, the lower pressure plate is movably connected to the mounting plate via the connector. The pressing actuation component further includes an elastic element, one end of which is connected to the mounting plate, and the other end of which is connected to the lower pressure plate. This allows the pressing block to drive the housing to achieve adaptive flexible pressing, ensuring that the battery cell is not damaged during the pressing assembly process and improving the pressing yield.

[0017] In one embodiment, the flaring assembly includes a first flaring clamp and a second flaring clamp, which are respectively connected to opposite sides of the mounting plate. The first flaring clamp is used to flare the concave portion in the middle of one side of the housing in the thickness direction, and the second flaring clamp is used to flare the concave portion in the middle of the other side of the housing in the thickness direction. Flaring the concave deformation portions on both sides of the housing prevents the inner wall of the housing from causing scratch damage to the battery cell.

[0018] In one embodiment, both the first and second flaring fixtures include a support plate, a flaring drive component, and a flaring suction cup. One end of the support plate is connected to the mounting plate, and the other end is connected to the flaring drive component. The flaring suction cup is connected to the telescopic shaft of the flaring drive component. By using suction force to pull the concave portion outwards and shape it into a flat or slightly raised structural form, the inner wall of the housing can be prevented from scratching the inserted battery cell.

[0019] In one embodiment, the battery pressing device further includes an air pipe and a connecting plate. The air pipe is used to communicate with the air passage of the flaring suction cup. One end of the air pipe is fixed to the bracket, and the other end of the air pipe is connected to the support plate through the connecting plate. This improves the structural rigidity of the first and second flaring fixtures, preventing displacement and deformation due to the reaction force of the housing, which would affect the effect of flaring the housing. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0022] Figure 1 This is an assembly structure diagram of a battery press-fitting device according to an embodiment of this application.

[0023] Figure 2 for Figure 1 The front view of the structure.

[0024] Figure 3 for Figure 2 The right-side structural diagram.

[0025] Figure 4 for Figure 1A schematic diagram of the structure of the first and second centering positioning components.

[0026] Figure 5 for Figure 1 A schematic diagram of the centering positioning mechanism.

[0027] Figure 6 for Figure 1 A schematic diagram of the drive mechanism in the middle housing.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Battery pressing device; 10. Centering and positioning mechanism; 11. First centering and positioning component; 12. Second centering and positioning component; 10a. Base; 10b. First driving component; 10c. First movable block; 10d. First positioning pressure block; 10e. Second driving component; 10f. Second movable block; 10g. Third movable block; 10h. Second positioning pressure block; 10i. Third positioning pressure block; 20. Pressing assembly; 21. Bracket; 22. Downward pressing drive component; 23. Mounting plate; 24. Connector; 25. Lower pressure plate; 26. Lower pressure block; 27. Elastic component; 30. Flaring assembly; 31. First flaring fixture; 32. Second flaring fixture; 30a. Support plate; 30b. Flaring drive component; 30c. Flaring suction cup; 40. Air pipe; 50. Connecting plate; 200. Housing. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing 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, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] See Figures 1 to 3 ,and Figure 5 and Figure 6This application illustrates a battery pressing device 100, comprising a centering and positioning mechanism 10 and a housing driving mechanism. The housing driving mechanism includes a pressing assembly 20 and a flaring assembly 30. The centering and positioning mechanism 10, the pressing assembly 20, and the flaring assembly 30 are arranged collaboratively in a three-dimensional space and cooperate to form a pressing station. The top cover, battery cell, and housing 200 undergo pressing processing within the pressing station.

[0037] It is necessary to clarify that the long battery involved in this solution specifically refers to a rectangular battery with a relatively large length. The rectangular battery includes a casing 200, which is made of aluminum. Aluminum has relatively low strength, so the sides that undergo concave deformation are specifically the two sides of the casing 200 with the largest surface area.

[0038] The centering and positioning mechanism 10 is used to clamp and position the top cover so that the top cover and the battery cell mounted on the top cover are kept in the center position. Understandably, the battery cell's tabs are pre-welded to the top cover's posts through current collectors, thereby pre-assembling the battery cell and top cover as one unit. This reduces the number of parts and pressing steps, improves pressing production efficiency, and the relative position of the top cover and battery cell is already confirmed, which also helps to ensure pressing accuracy.

[0039] The pressing assembly 20 is spaced above the centering and positioning mechanism 10; the flaring assembly 30 is driven to connect with the pressing assembly 20. The flaring assembly 30 is used to clamp the housing 200 and vertically align the housing 200 with the battery cell and the top cover. The flaring assembly 30 is also used to connect the concave part in the middle of the housing 200 for flaring. The pressing assembly 20, the flaring assembly 30, and the housing 200 move down to complete the insertion of the battery cell into the housing and the closing of the top cover with the housing 200.

[0040] In summary, implementing the technical solution of this embodiment will have the following beneficial effects: The battery pressing device 100 of this solution adopts an inverted shell insertion method to assemble and process the top cover, battery cell and shell 200. That is, the battery cell is first assembled with the top cover as a whole, the battery cell is above the top cover, and the shell 200 is arranged above the battery cell. The battery cell is inserted into the shell 200 by moving the shell 200 downward, and at the same time the top cover is closed with the shell 200 to facilitate subsequent welding operations. Specifically, when using the battery pressing device 100, the top cover is first clamped and positioned by the centering and positioning mechanism 10, ensuring that the top cover and the battery cells mounted on it are kept in the center position. Next, the flaring assembly 30 of the housing drive mechanism grips the housing 200, vertically aligning it with the battery cells and the top cover below. Then, the flaring assembly 30 flares outwards the concave portion of the housing 200 (i.e., stretching and expanding the concave portion outwards, restoring the middle of the housing 200 to a flat state or a certain degree of outward expansion). Finally, the pressing assembly 20 drives the flaring assembly 30 and the housing 200 downwards, allowing the battery cells to be inserted into the housing. The internal structure of the housing 200 is pre-assembled by closing the top cover and the housing 200 together. During this process, the flaring assembly 30 continuously flares the concave portion in the middle of the housing 200, thereby preventing the concave portion from scratching the cell during pressing and avoiding damage to the cell. This greatly improves the pressing yield and ensures product processing quality. In addition, this application integrates the flaring assembly 30 onto the pressing assembly 20, which reduces the footprint of the entire battery pressing device 100. Furthermore, during the process of the pressing assembly 20 driving the housing 200 downward to close the top cover, the flaring assembly 30 always acts on the housing 200, preventing the middle of the housing 200 from contracting inward and scratching the cell during the closing process.

[0041] Understandably, in this application, the housing 200 actively descends under the power provided by the press-fit assembly 20, while the top cover and battery cell remain stationary under the clamping and positioning mechanism 10, and are thus passively assembled with the housing 200 to complete the press-fitting. Specifically, the battery cell is fully inserted into the cavity of the housing 200, and the size of the top cover is slightly larger than the opening size of the housing 200, so that the top cover closes to the outside of the opening of the housing 200 to facilitate final welding and fixing.

[0042] Please continue reading. Figure 4 and Figure 5In one embodiment, the centering and positioning mechanism 10 includes a first centering and positioning component 11 and a second centering and positioning component 12 arranged laterally at intervals. Both the first centering and positioning component 11 and the second centering and positioning component 12 include a base 10a, a first driving member 10b, a first movable block 10c, and a plurality of first positioning blocks 10d. The first driving member 10b is disposed on the base 10a. The first movable block 10c is drivenly connected to the first driving member 10b and can move toward or away from the long side of the top cover. The plurality of first positioning blocks 10d are spaced apart from the first movable block 10c and arranged along the long side extension direction of the top cover.

[0043] That is, when centering and positioning the top cover and the battery cell, the two first driving members 10b on both sides simultaneously drive the two first movable blocks 10c close to the two long sides of the top cover, so that the multiple first positioning blocks 10d on both sides can simultaneously abut against the two long sides of the top cover, so as to achieve the correction and positioning of the top cover and the battery cell along the first direction (e.g., the X-axis direction).

[0044] Understandably, multiple spaced first positioning blocks 10d are used on both sides to abut against the two long sides of the top cover, in order to ensure that the top cover is subjected to balanced force and will not tilt.

[0045] Furthermore, both the first centering and positioning component 11 and the second centering and positioning component 12 further include a second driving member 10e, a second movable block 10f, a third movable block 10g, a second positioning pressure block 10h, and a third positioning pressure block 10i. The second driving member 10e is disposed on the first movable block 10c. The second movable block 10f and the third movable block 10g are respectively drivenly connected to the second driving member 10e. The second driving member 10e is used to drive the second movable block 10f and the third movable block 10g to move closer to or further away from each other along a straight path parallel to the long side of the top cover. Optionally, the second driving member 10e can be one of a bidirectional motor, a bidirectional cylinder, etc., which can simultaneously drive the second movable block 10f and the third movable block 10g to move closer to or further away from each other. Alternatively, two second driving members 10e can be provided, with the second movable block 10f and the third movable block 10g each connected to one second driving member 10e, so that they are individually controlled by their respective second driving members 10e to move towards or away from each other.

[0046] The second positioning block 10h is disposed on the second movable block 10f and is used to abut against one of the short sides of the top cover, and the third positioning block 10i is disposed on the third movable block 10g and is used to abut against the other short side of the top cover.

[0047] Immediately afterwards, the two second driving components 10e simultaneously drive the two pairs of second movable blocks 10f and third movable blocks 10g on both sides to move closer to each other, so that the two sets of second positioning blocks 10h and third positioning blocks 10i can simultaneously clamp the two short sides at both ends of the top cover in the length direction, so as to achieve the correction positioning of the top cover and the battery cell along the second direction (e.g., the Y-axis direction), thereby achieving fast and accurate centering positioning of the top cover and the battery cell, improving the longitudinal alignment accuracy of the top cover, battery cell and housing 200, and preventing scratches during the pressing process.

[0048] Optionally, the first drive element 10b and the second drive element 10e can be linear motors, etc.

[0049] Furthermore, two or more second positioning blocks 10h and third positioning blocks 10i are provided. For example, this embodiment illustrates the simultaneous provision of two second positioning blocks 10h and two third positioning blocks 10i. The distance between the middle pair of second positioning blocks 10h and third positioning blocks 10i is smaller, while the distance between the outer pair of second positioning blocks 10h and third positioning blocks 10i is larger, thereby adapting to the clamping needs of top covers (i.e., batteries) of different lengths and improving the compatibility of the battery pressing device.

[0050] Furthermore, based on the above embodiments, the centering and positioning mechanism 10 also includes a torque sensor, which is electrically connected to the first driving member 10b and the second driving member 10e; and / or, the centering and positioning mechanism 10 also includes a pressure sensor, which is disposed on the first positioning block 10d, the second positioning block 10h, and the third positioning block 10i. For example, when a torque sensor is added to the linear motor, the torque output by the linear motor can be adjusted by the torque sensor, thereby precisely controlling the travel of the first movable block 10c, and avoiding excessive clamping force of the first positioning block 10d on the top cover, which could damage the top cover. When a detection scheme with a pressure sensor is adopted, the pressure between the first positioning block 10d, the second positioning block 10h, and the third positioning block 10i and the top cover can be directly detected, thereby preventing damage to the top cover.

[0051] Of course, other alternative embodiments can also employ other protective measures to prevent the top cover from being damaged by excessive clamping, while still meeting the need for centering and positioning the top cover and the battery cell.

[0052] Please continue reading. Figure 2 and Figure 3 Based on any of the above embodiments, the press assembly 20 includes a bracket 21, a press drive 22, and a press execution assembly. The press drive 22 is disposed on the bracket 21 and is used to output a downward linear driving force. The press execution assembly is drivenly connected to the press drive 22, and the flaring assembly 30 is assembled with the press execution assembly.

[0053] The bracket 21 is used to mount and support the pressing drive component 22, the pressing actuation component, and the flaring assembly 30. In this embodiment, the bracket 21 adopts a column structure, specifically including a horizontal plate and four columns. The four columns are respectively installed at the four top corners of the horizontal plate, and the bottom ends of the columns support the ground for stable standing. The pressing drive component 22 is fixed to the horizontal plate by means of screw connection or other installation methods. For example, the pressing drive component 22 is a cylinder or electric actuator. The piston rod of the cylinder or electric actuator passes through the horizontal plate and extends downward to connect with the pressing actuation component. The cylinder or electric actuator drives the piston rod to extend, which can simultaneously drive the pressing actuation component and the flaring assembly 30 to descend, thereby driving the housing 200 to actively press against the battery cell and the top cover.

[0054] Specifically, in the above embodiment, the pressing actuation component includes a mounting plate 23, a connector 24, a lower pressure plate 25, and a pressing block 26. The mounting plate 23 is connected to the drive head of the pressing drive component 22. The lower pressure plate 25 is assembled with the mounting plate 23 through the connector 24. The pressing block 26 is located on the side of the lower pressure plate 25 facing away from the mounting plate 23. The pressing driving force output by the pressing drive component 22 acts directly on the mounting plate 23, thereby pushing the mounting plate 23, the connector 24, and the lower pressure plate 25 down together. This causes the pressing block 26 to push the bottom of the housing 200 so that the opening of the housing 200 can be fitted with the battery cell (i.e., the battery cell is installed in the housing) and finally fits against the top cover, thus completing the pressing operation.

[0055] However, in actual processing, the positions of different incoming battery cells are inconsistent, and the length of the stacked battery cells is relatively large, which easily leads to the phenomenon that the left and right sides of the housing 200 are tilted and have inconsistent heights. If the pressing is performed directly, it is easy to squeeze the open side of the housing 200, thereby causing deformation. To address this, in one embodiment, the lower pressure plate 25 is movably connected to the mounting plate 23 through the connector 24. The pressing actuation component also includes an elastic member 27, one end of which is connected to the mounting plate 23, and the other end of which is connected to the lower pressure plate 25.

[0056] For example, the mounting plate 23 has a long slot, and the connector 24 uses a bolt assembly. One end of the bolt assembly is locked and fixed to the lower pressure plate 25, and the other end passes through the long slot and is locked by a nut, so that the other end cannot pass through the long slot and detach from the mounting plate 23. The bolt assembly can move and oscillate within the long slot. The elastic element 27 can be a spring. The spring provides the lower pressure plate 25 with flexible floating and elastic oscillation capabilities, so that when the battery cell is misaligned, the lower pressure block 26 can drive the housing 200 to achieve adaptive flexible pressing, ensuring that the battery cell is not damaged during the pressing assembly process and improving the pressing yield.

[0057] Please continue reading. Figure 1 , Figure 2 and Figure 6Furthermore, based on any of the above embodiments, the flaring assembly 30 includes a first flaring clamp 31 and a second flaring clamp 32. The first flaring clamp 31 and the second flaring clamp 32 are respectively connected to opposite sides of the mounting plate 23. The first flaring clamp 31 is used to flare the concave portion in the middle of one side of the housing 200 in the thickness direction, and the second flaring clamp 32 is used to flare the concave portion in the middle of the other side of the housing 200 in the thickness direction. By flaring the concave deformation portions on both sides of the housing 200, the inner wall of the housing 200 will not cause scratch damage to the battery cell.

[0058] Specifically, in one optional embodiment, both the first flaring fixture 31 and the second flaring fixture 32 include a support plate 30a, a flaring drive component 30b, and a flaring suction cup 30c. One end of the support plate 30a is connected to the mounting plate 23. The connection method can be at least one of screwing, snap-fitting, or adhesive bonding, which is simple to install and has high connection reliability.

[0059] The other end of the support plate 30a is connected to the flaring drive component 30b, and the flaring suction cup 30c is connected to the telescopic shaft of the flaring drive component 30b. The flaring drive component 30b drives the flaring suction cup 30c to press against the concave part in the middle of the housing 200, and then the flaring suction cup 30c generates negative pressure suction. Subsequently, the flaring drive component 30b drives the flaring suction cup 30c to move outward again, thereby pulling the concave part outward to flare and shape it into a flat or slightly raised structural form, thus avoiding the inner wall of the housing 200 from scratching the battery cell inserted into the housing.

[0060] Understandably, using the vacuum suction of the flaring suction cup 30c to pull the side wall shape of the housing 200 for correction is a simple and reliable method that will not damage the housing 200. Of course, in other optional embodiments, a pushing mechanism can be inserted into the housing 200 to push the concave part from the inside out to complete the flaring, and then the pushing mechanism can be withdrawn from the housing 200 before the pressing operation is performed.

[0061] Please continue reading. Figure 2 Furthermore, the battery pressing device 100 also includes an air pipe 40 and a connecting plate 50. The air pipe 40 is used to communicate with the air passage of the flared suction cup 30c. One end of the air pipe 40 is fixed to the bracket 21, and the other end of the air pipe 40 is connected to the support plate 30a through the connecting plate 50. The end of the air pipe 40 fixed to the bracket 21 can be reliably connected to the air extraction device so that the flared suction cup 30c can generate vacuum suction or break vacuum through the air pipe 40. The support plate 30a is connected to the air pipe 40 through the connecting plate 50, which helps to improve the structural rigidity of the first flaring fixture 31 and the second flaring fixture 32, and avoids displacement and deformation due to the reaction force of the housing 200, which would affect the effect of flaring the housing 200.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery pressing device, characterized in that, include: A centering and positioning mechanism is used to clamp and position the top cover so that the top cover and the battery cell mounted on the top cover are held together in a centered position. as well as, A housing driving mechanism includes a pressing assembly and a flaring assembly. The pressing assembly is spaced above the centering and positioning mechanism. The flaring assembly is driven to connect with the pressing assembly. The flaring assembly is used to clamp the housing and vertically align the housing with the battery cell and the top cover. The flaring assembly is also used to flare the concave portion in the middle of the housing. The pressing assembly drives the flaring assembly and the housing to move downward to complete the insertion of the battery cell into the housing and the closing of the top cover with the housing. The pressing assembly includes a bracket, a pressing drive component, and a pressing actuation component. The pressing drive component is disposed on the bracket and is used to output a downward linear driving force. The pressing actuation component is drivingly connected to the pressing drive component. The flaring assembly is assembled with the pressing actuation component. The pressing actuator includes a mounting plate, a connector, a pressing plate, and a pressing block. The mounting plate is connected to the drive head of the pressing drive component. The pressing plate is assembled with the mounting plate through the connector. The pressing block is disposed on the side of the pressing plate opposite to the mounting plate.

2. The battery pressing device according to claim 1, characterized in that, The centering and positioning mechanism includes a first centering and positioning component and a second centering and positioning component arranged laterally at intervals. Both the first centering and positioning component and the second centering and positioning component include a base, a first driving member, a first movable block, and a plurality of first positioning blocks. The first driving member is disposed on the base. The first movable block is drivenly connected to the first driving member and can move toward or away from the long side of the top cover. The plurality of first positioning blocks are spaced apart on the first movable block and arranged along the long side extension direction of the top cover.

3. The battery pressing device according to claim 2, characterized in that, Both the first centering and positioning component and the second centering and positioning component further include a second driving member, a second movable block, a third movable block, a second positioning pressure block, and a third positioning pressure block. The second driving member is disposed on the first movable block, and the second movable block and the third movable block are respectively drivenly connected to the second driving member. The second driving member is used to drive the second movable block and the third movable block to move closer to or further away from each other along a straight path parallel to the long side of the top cover. The second positioning pressure block is disposed on the second movable block and is used to abut against one of the short sides of the top cover. The third positioning pressure block is disposed on the third movable block and is used to abut against the other short side of the top cover.

4. The battery pressing device according to claim 3, characterized in that, The centering and positioning mechanism further includes a torque sensor, which is electrically connected to the first driving member and the second driving member.

5. The battery pressing device according to claim 3 or 4, characterized in that, The centering and positioning mechanism also includes a pressure sensor, which is disposed on the first positioning block, the second positioning block and the third positioning block.

6. The battery pressing device according to claim 1, characterized in that, The lower ballast plate is movably connected to the mounting plate via the connector. The lower pressing actuation component also includes an elastic element, one end of which is connected to the mounting plate, and the other end of which is connected to the lower ballast plate.

7. The battery pressing device according to claim 1, characterized in that, The flaring assembly includes a first flaring clamp and a second flaring clamp, which are respectively connected to opposite sides of the mounting plate. The first flaring clamp is used to flare the concave portion in the middle of one side of the shell in the thickness direction, and the second flaring clamp is used to flare the concave portion in the middle of the other side of the shell in the thickness direction.

8. The battery pressing device according to claim 7, characterized in that, Both the first flaring fixture and the second flaring fixture include a support plate, a flaring drive component, and a flaring suction cup. One end of the support plate is connected to the mounting plate, and the other end of the support plate is connected to the flaring drive component. The flaring suction cup is connected to the telescopic shaft of the flaring drive component.

9. The battery pressing device according to claim 8, characterized in that, The battery pressing device also includes an air pipe and a connecting plate. The air pipe is used to communicate with the air passage of the flared suction cup. One end of the air pipe is fixed to the bracket, and the other end of the air pipe is connected to the support plate through the connecting plate.

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