Battery cell secondary press-fitting device

Abstract

The application relates to the battery technical field and discloses a battery cell secondary compression equipment, which comprises a positioning platform provided with a compression station, a first sliding block and a second sliding block arranged in the compression station, a first compression assembly arranged on the first sliding block, a second compression assembly arranged on the second sliding block, the first compression assembly and the second compression assembly compressing monomer batteries from two sides, one of the first sliding block and the second sliding block being a driving sliding block driven to move by a compression driving device, the other being an adjusting sliding block driven to slide by an adjusting driving device, the power output direction of the compression driving device being the same as the moving direction of the driving sliding block, and the power output direction of the adjusting driving device intersecting the moving direction of the adjusting sliding block. The adjusting sliding block is arranged to improve the adjusting capacity and the universality of the battery cell secondary compression equipment, and the cross transmission structure reduces the space occupation of the adjusting driving device in the moving direction of the adjusting sliding block, thereby improving the setting density of the compression station on the positioning platform.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a secondary pressing device for battery cells. Background Technology

[0002] In the production process of a single battery cell, the cell needs to be pre-assembled by inserting a portion of it into the casing. Then, a secondary pressing device is used to press the pre-assembled cell into the casing completely. However, current pressing equipment cannot easily adapt to single batteries of different sizes, and setting up an adjustment mechanism would increase space occupation and affect the density of workstations, leading to increased production costs. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a cell secondary pressing device to improve its versatility and economy in secondary pressing of single cells.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A secondary pressing and assembly equipment for battery cells, characterized in that it comprises:

[0006] The positioning platform is equipped with a pressing station for inserting individual batteries;

[0007] The first slider and the second slider are set at the pressing station. The first slider is provided with a first pressing component and the second slider is provided with a second pressing component. The distance between the first pressing component and the second pressing component is adjustable so that the single cell can be pressed from both sides.

[0008] One of the first and second sliders is an active slider driven by a pressing drive device, and the other is an adjusting slider driven by an adjusting drive device. The power output direction of the pressing drive device is the same as the movement direction of the active slider, and the power output direction of the adjusting drive device intersects the movement direction of the adjusting slider.

[0009] As can be seen from the above technical solution, one aspect of this disclosure provides a secondary pressing device for battery cells, which mainly includes a positioning platform, a first slider, and a second slider. The positioning platform is provided with a pressing station for pre-assembled individual batteries to be placed and fixed for subsequent secondary pressing. The first slider and the second slider are located at the pressing station. The first slider is provided with a first clamping component, and the second slider is provided with a second clamping component. During the secondary pressing of the individual battery, the first and second clamping components press the battery casing against the opposite sides of the individual battery to achieve fixation, thus meeting the pressing requirements of the battery cell. Furthermore, based on the above structure, the first and second sliders respectively support the first and second clamping components and allow for position adjustment of the first and second clamping components. One of the first and second sliders is an active slider driven by a clamping drive device. Under the drive of the clamping drive device, the active slider causes the corresponding clamping component to move significantly, thereby achieving… Currently, the cell assembly station involves the insertion and clamping of individual cells. To improve drive stability and reduce the complexity of the drive structure, the power output direction of the clamping drive device is the same as the movement direction of the active slider. This means the clamping assembly can use a linear drive to adjust the active slider. The other of the first and second sliders is an adjusting slider driven by the adjusting drive device. It is used to adjust the clamping distance of the two sets of clamping assemblies to accommodate cell cells of different sizes. Unlike the clamping drive device, the power output direction of the adjusting drive device is intersected with the movement direction of the adjusting slider. This means the adjusting drive device is offset rather than positioned on the movement path of the adjusting slider. While meeting the requirements of the secondary cell assembly equipment to accommodate cell cells of different sizes, the offset setting reduces the space occupied in the movement direction of the adjusting slider. Consequently, the positioning platform does not need to set the drive distance of the adjusting drive device, and more assembly stations can be set in the movement direction of the adjusting slider to improve the assembly efficiency and economy of the secondary cell assembly equipment. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the positioning platform structure provided in an embodiment of the present utility model;

[0012] Figure 2 This is a schematic diagram of the peripheral structure of a single pressing station provided in an embodiment of the present invention;

[0013] Figure 3 This is a schematic diagram of the assembly structure of the active slider and the adjusting slider provided in an embodiment of the present invention;

[0014] Figure 4 This is a schematic diagram of the structure of the adjusting slider and adjusting drive device provided in an embodiment of the present invention;

[0015] Figure 5 An exploded view of the adjusting slider and transmission guide block provided in an embodiment of this utility model;

[0016] Figure 6 A schematic diagram of the positioning platform structure for two pressing stations provided in an embodiment of this utility model;

[0017] Figure 7 This is a schematic diagram showing the assembly positions of two adjusting sliders according to an embodiment of the present invention;

[0018] Figure 8 This is a schematic diagram of the structure of the first slider and the first clamping assembly provided in an embodiment of the present invention;

[0019] Figure 9 This is a schematic diagram of the structure of a single clamping block provided in an embodiment of the present invention;

[0020] Figure 10 This is a schematic diagram of the structure of the third and fourth pressing components provided in an embodiment of the present invention around the pressing station;

[0021] Figure 11 This is a schematic diagram of the upper pressing mechanism provided in an embodiment of the present invention.

[0022] in:

[0023] 10-Positioning platform; 110-Pressure fitting station; 20-First slider; 210-First clamping assembly; 220-Clamping block; 2210-First clamping part; 2220-Second clamping part; 230-Suction cup; 240-Auxiliary drive part; 30-Second slider; 310-Second clamping assembly; 40-Active slider; 50-Clamping drive device; 60-Adjusting slider; 610-Transmission groove; 70-Adjusting drive device; 710-Linear motor; 720-Transmission guide block; 7210-Cam follower; 730-Linear guide rail; 740-Adjusting guide rail; 810-Third clamping assembly; 820-Fourth clamping assembly; 90-Upper pressing mechanism; 910-Clamping block. Detailed Implementation

[0024] The core of this application is to disclose a cell secondary pressing equipment to improve its versatility and economy in secondary pressing of single cells.

[0025] To enable those skilled in the art to better understand the present application, embodiments of the present application will be described below with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model described in the claims. Additionally, the complete content of the structures represented in the following embodiments is not limited to those necessary for the solution of the utility model described in the claims.

[0026] like Figure 1 and Figure 2 As shown, one aspect of this disclosure provides a secondary pressing device for battery cells, which further presses pre-assembled battery cells into the casing, so that the battery cells are completely placed inside the battery casing. This secondary pressing device mainly includes a positioning platform 10, a first slider 20, and a second slider 30. The positioning platform 10, as the basic load-bearing structure, can be made of high-strength aluminum alloy or steel, and is equipped with a pressing station 110 for placing and fixing the pre-assembled individual battery cells and performing subsequent secondary pressing operations.

[0027] It should be noted that in some embodiments of this disclosure, the pressing station 110 is a hollow structure along the vertical direction. That is, the pre-assembled single cell is moved to the bottom of the pressing station 110 by the bottom transfer tool and lifted to enter the pressing station 110. After being clamped and limited in the pressing station 110, a secondary pressing action is performed.

[0028] Based on the above structure, such as Figure 2 As shown, a first slider 20 and a second slider 30 are slidably arranged on the pressing station 110, forming an opposing pressing actuator. Specifically, a first pressing component 210 is provided on the first slider 20, and a second pressing component 310 is provided on the second slider 30. The first slider 20 is connected to the positioning platform 10 through a linear slide rail assembly, and the first pressing component 210 is installed on its top by bolts or snap-fit. The first pressing component 210 extends toward the side wall of the single cell. Similarly, the second pressing component 310 is assembled on the second slider 30. The first pressing component 210 and the second pressing component 310 are arranged opposite each other in the horizontal direction. Preferably, the first pressing component 210 and the second pressing component 310 are arranged in the horizontal direction, which can press and fix the single cell from both sides of the single cell.

[0029] It should be noted that the distance between the two clamping components is adjustable, allowing the individual battery cells to be smoothly placed into the pressing station 110 through the opposite movement of the sliders, while the opposing movement of the sliders presses the individual battery cells located in the pressing station 110. The contact surfaces between the clamping components and the battery sidewalls can be embedded with polyurethane or silicone gaskets to ensure uniform transmission of clamping force and to avoid scratching the battery casing.

[0030] To further optimize the above technical solution and refine the functional distinction between the first slider 20 and the second slider 30, in some embodiments, such as Figure 3 As shown, one of the first slider 20 and the second slider 30 is an active slider 40 driven by the pressing drive device 50. The active slider 40 undertakes a large range of movement to adjust the distance between the two sliders, so as to meet the requirements of inserting and clamping the single cell at the pressing station 110. It should be noted that the pressing drive device 50 can be a servo electric cylinder or a pneumatic cylinder. Its piston rod end is rigidly connected to the active slider 40. The power output direction is coaxial or parallel to the movement direction of the active slider 40, preferably completely overlapping to ensure that the driving force is directly and efficiently converted into the pressing action.

[0031] The other of the first slider 20 and the second slider 30 is the adjusting slider 60 driven by the adjusting drive device 70. Unlike the pressing drive device 50, the adjusting drive device 70 has a smaller adjustment range for the distance of the adjusting slider 60 in the direction of the single cell and away from the single cell. It is mainly used to adapt to different single cell sizes, so as to change the limit pressing distance of the two sets of pressing components on the adjusting slider 60 and the active slider 40 by moving the adjusting slider 60, thereby improving the versatility of the secondary pressing equipment for the battery cell.

[0032] It should be noted that in some embodiments, the first slider 20 is defined as the active slider 40. Since the first slider 20 needs to drive the first pressing component 210 to move to press against the side wall of the single cell, in some preferred embodiments, the moving direction of the first slider 20 is perpendicular to the side wall of the single cell facing the first pressing component 210, so that the first pressing component 210 can act perpendicularly on the side wall of the single cell, thereby reducing the risk of the single cell casing being deformed and the internal cells being damaged due to the bias of the force of the first pressing component 210.

[0033] Based on this, the power output direction of the adjustment drive device 70 is intersected with the movement direction of the adjustment slider 60. That is, the adjustment drive device 70 can be offset rather than set on the movement path of the adjustment slider 60. It should be noted that, unlike the linear drive structure, the offset adjustment drive device 70 can reduce the space occupation in the movement direction of the adjustment slider 60. On the positioning platform 10 with multiple pressing stations 110, the pressing drive device 50, due to the need for a large-amplitude drive, can be set on the outer edge of the positioning platform 10, while the adjustment drive device 70 will be set in the inner area of ​​the positioning platform 10. Therefore, the space occupation in the movement direction of the adjustment slider 60 is reduced, so that the positioning platform 10 does not need to reserve the drive distance of the adjustment drive device 70 in the movement direction of the adjustment slider 60. This allows for the setting of more pressing stations 110 in the movement direction of the adjustment slider 60, thereby improving the pressing efficiency and pressing economy of the secondary pressing equipment for battery cells.

[0034] Furthermore, in some embodiments of this disclosure, the power output direction of the adjustment drive device 70 is perpendicular to the moving direction of the adjustment slider 60 in space at a 90-degree angle. The orthogonal transmission layout allows the adjustment drive device 70 to be positioned on one side of the moving path of the adjustment slider 60 within the moving range of the adjustment slider 60. This further reduces the space occupied by the adjustment drive device 70 in the moving direction of the adjustment slider 60, making the overall structure of the device more compact and the space utilization rate higher.

[0035] In practical applications, the adjustment drive device 70 can be arranged along the front-back direction of the positioning platform 10, with its drive shaft pointing perpendicularly to the movement path of the adjustment slider 60, while the adjustment slider 60 slides in the left-right direction. When the adjustment drive device 70 outputs thrust, the longitudinal thrust is decomposed into a lateral component through the transmission conversion mechanism, driving the adjustment slider 60 to produce a precise lateral displacement. Most of the pressing reaction force on the adjustment slider 60 is borne by the sliding guide rail, and very little is transmitted to the output shaft of the adjustment drive device 70, thereby reducing the load requirements of the adjustment drive device 70, saving costs, and improving response speed.

[0036] Based on the above embodiments, such as Figure 4 and Figure 5 As shown, the adjustment drive device 70 may include a linear motor 710 and a transmission guide block 720 to cooperate in adjusting the adjustment slider 60; specifically, the linear motor 710 is used to drive the transmission guide block 720 to move in a first direction, and a cam follower 7210 is fixedly provided on the transmission guide block 720.

[0037] Correspondingly, the overall movement of the adjusting slider 60 is subject to bidirectional constraints. Specifically, in the first direction, the position is locked by a limiting block, limiting groove, or track structure, so that the adjusting slider 60 will not move in the first direction when subjected to force. At the same time, the adjusting slider 60 is also subject to limiting in the second direction, which is perpendicular to the first direction, so that it can slide in the second direction. Specifically, a low-resistance sliding setting can be achieved by a linear guide rail. Meanwhile, a transmission groove 610 is provided in the middle of the plate of the adjusting slider 60, which runs vertically through the plate. The geometric shape of the transmission groove 610 is designed as an oblong or elongated hole to allow the cam follower 7210 to be inserted and to provide the cam follower 7210 with movement space. Furthermore, the length direction of the transmission groove 610 is oblique to both the first and second directions. In some embodiments, the inclination angle of the transmission groove 610 relative to the first or second direction is between 30 and 60 degrees.

[0038] Based on the above structure, since the roller portion of the cam follower 7210 passes through the transmission groove 610, when the adjustment slider 60 needs to be moved, the cam follower 7210 rolls in the transmission groove 610 when the linear motor 710 drives the transmission guide block 720 to move in the first direction. This generates component forces along the first and second directions on the inclined sidewall of the transmission groove 610. The component force along the first direction cannot produce displacement due to the limiting setting of the adjustment slider 60 in the first direction, while the component force along the second direction can drive the adjustment slider 60 to slide in the second direction. This converts the first-direction driving action of the linear motor 710 into movement in the second direction. The transmission process is smooth and shock-free, and has a self-locking characteristic. When the linear motor 710 stops, the position of the adjustment slider 60 remains unchanged, thereby achieving effective adjustment of the working clamping distance between the adjustment slider 60 and the active slider 40.

[0039] To further optimize the above technical solution, the transmission guide block 720 can be slidably mounted on the linear guide rail 730. The guiding direction of the linear guide rail 730 is along the first direction. On the basis of satisfying the sliding mounting of the transmission guide block 720 in the first direction, the linear guide rail 730 can limit the transmission guide block 720 so that it can only slide in the first direction.

[0040] Specifically, the bottom of the transmission guide block 720 can slide with a single linear guide rail 730 through one or two spaced linear sliders, thereby improving sliding stability. In some embodiments, the linear guide rail 730 is made of hardened steel rail and is fixed to the mounting surface of the positioning platform 10 by bolts. To further optimize the above technical solution, two linear guides 730 can be spaced apart to simultaneously cooperate with a single transmission guide block 720. Specifically, the two linear guides 730 are parallel and spaced apart in the second direction, and the span design of the two linear guides 730 needs to be determined according to the length of the transmission guide block 720 in the second direction, usually 0.6-0.8 times the length of the transmission guide block 720 in the second direction, to provide sufficient support rigidity and anti-overturning moment capability. It should be noted that the cooperation of the two linear guides 730 enables the linear motor 710 to drive the transmission guide block 720 to move, effectively constraining all degrees of freedom of the transmission guide block 720 except for the first direction, preventing the transmission guide block 720 from deflecting due to the lateral reaction force on the cam follower 7210, and improving the adjustment stability of the adjusting slider 60.

[0041] In some embodiments of this disclosure, the transmission guide block 720 is designed as an L-shaped folded plate structure, with its short side directly connected to the driving part of the linear motor 710, while its long side extends along the first direction and carries the cam follower 7210. The L-shaped structure can improve the mechanical strength of the transmission guide block 720. At the same time, the two linear guide rails 730 configured in this embodiment are arranged at intervals along the second direction to form a double-rail support system. The first guide rail is close to the short side of the transmission guide block 720 and mainly bears the driving force and overturning torque; the second guide rail is close to the end of the long side and mainly plays a balancing support role, thus ensuring the operational stability of the L-shaped transmission guide block 720. In addition, the L-shaped transmission guide blocks 720 can also improve space utilization by staggering their arrangement when the number of installations increases, thereby increasing the installation density of the pressing station 110 of the secondary pressing equipment for battery cells.

[0042] Correspondingly, in some embodiments, the adjustment drive device 70 further includes an adjustment guide rail 740 with a linear structure arranged along the second direction, and the adjustment slider 60 is snapped and slidably disposed on the adjustment guide rail 740, so as to be similar to the arrangement structure of the transmission guide block 720, so that the adjustment slider 60 can be limited in the first direction through the snapping structure, and can only be displaced in the second direction, thereby realizing the position adjustment requirement of its corresponding pressing component in the second direction.

[0043] Furthermore, in order to improve the production efficiency of secondary pressing equipment for battery cells, such as... Figure 6 As shown, in some embodiments of this disclosure, the positioning platform 10 is provided with two pressing stations 110 so that two single cells can be pressed simultaneously. It should be noted that each pressing station 110 has a set of corresponding active sliders 40 and adjusting sliders 60 so that each pressing station 110 can independently adjust the pressing distance and perform the pressing action.

[0044] It should be noted that for the positioning platform 10 with a dual-station structure, the pressing stations 110 are preferably set at intervals on the left and right sides of the positioning platform 10, and the center distance of the two stations from the center of the positioning platform 10 is the same. Each pressing station 110 is independently equipped with a set of active sliders 40 and adjusting sliders 60 to form two sets of pressing units that work in parallel. This allows the equipment to perform pressing actions at one station while the other station performs loading and unloading operations, thereby enabling the secondary pressing equipment of the battery cells to adapt to two asynchronous loading production lines and improve the production capacity of the secondary pressing equipment of the battery cells.

[0045] Based on the above embodiments, the two sets of adjusting sliders 60 corresponding to the two pressing stations 110 can be freely set around the pressing station 110, as long as the pressing component corresponding to the adjusting slider 60 can smoothly act on the single battery set in the pressing station 110. To improve the structural regularity and compactness of the secondary pressing equipment for battery cells, the two pressing stations 110 are arranged in a mirror symmetrical manner. The active sliders 40 are both arranged on the outer side of the station, that is, on the opposite sides of the two pressing stations 110. The two sets of adjusting sliders 60 corresponding to the two pressing stations 110 are both arranged in the interval area between the two pressing stations 110, with the adjusting sliders 60 arranged on the inner side. This ensures that the forces applied by the two pressing stations 110 to the positioning platform 10 are symmetrical, preventing the positioning platform 10 from deforming due to the concentrated load generated by the simultaneous pressing of the two stations. The pressing parameters of each station can be set independently, including the clamping force, holding time, and the position of the adjusting slider 60. Through independent control, the secondary pressing equipment for battery cells can handle two different specifications of batteries at the same time, or continue production at the other station while one station is under maintenance, which greatly improves the utilization rate and production flexibility of the secondary pressing equipment for battery cells.

[0046] To further optimize the above technical solution, in some embodiments, such as Figure 6 and Figure 7 As shown, the two sets of adjusting sliders 60 are staggered. The staggered arrangement means that the two sets of adjusting sliders 60 have a projected overlapping area in the second direction of movement, which can further reduce the space occupied by the two sets of adjusting sliders 60 in the second direction and improve the structural compactness of the pressing station 110 in the secondary pressing equipment of the battery cell.

[0047] Furthermore, for the two sets of adjustment sliders 60 that are staggered, the power output directions of the two sets of adjustment drive devices 70 corresponding to them can be set in the same straight line. The power output directions of the two sets of adjustment drive devices 70 are opposite, so that the reaction force on the positioning platform 10 is more uniform, avoiding damage caused by the positioning platform 10 being tilted by force.

[0048] Furthermore, such as Figure 8As shown, in the secondary pressing equipment for battery cells provided in this embodiment, the first pressing component 210 includes pressing blocks 220 and suction cups 230 spaced apart. The pressing blocks 220 and suction cups 230 act on the same side wall of the single battery cell to simultaneously achieve the limiting and locking effect on the side wall of the single battery cell through abutment pressing and suction. In order to ensure a uniform limiting effect when the side wall of the single battery cell is subjected to the force of the first pressing component 210, it is preferable to provide at least two pressing blocks 220 and arrange them symmetrically about the suction cups 230. For the first pressing component 210 with only two pressing blocks 220 and one suction cup 230, the suction cups 230 can be aligned with the vertical symmetry line of the single battery cell to effectively suction the central area of ​​the side wall of the single battery cell, while the pressing blocks 220 can provide symmetrical pressing action from both sides to maintain the structural stability of the side wall of the single battery cell.

[0049] To further optimize the above technical solution and improve the smoothness of the secondary pressing process of the battery cell, in some embodiments of this disclosure, such as... Figure 8 As shown, the first slider 20 is also provided with an auxiliary drive unit 240. The auxiliary drive unit 240 is connected to the suction cup 230 to drive the suction cup 230 to move relative to the first slider 20. The power output direction of the auxiliary drive unit 240 is the same as the movement direction of the first slider 20, so that it can drive the suction cup 230 independently.

[0050] Specifically, during its movement, the first slider 20 can drive the auxiliary drive unit 240 and the suction cup 230 to move synchronously to approach and move away from the individual battery. When it is necessary to dock the individual battery, the first slider 20 can drive the suction cup 230 to be attracted to the side wall of the individual battery. Before pressing the battery cell, in order to avoid the deformation of the shell facing inward and the reduction of the cross-sectional area of ​​the battery cell, and the risk of scratching during the downward movement of the battery cell, this embodiment can activate the auxiliary drive unit 240 to drive the suction cup 230 to move relative to the first slider 20. The suction cup 230 maintains the attraction state with the shell and moves away from the individual battery under the driving action of the auxiliary drive unit 240, thereby expanding the internal area of ​​the shell and enabling the battery cell to have a larger passing area for successful secondary pressing.

[0051] It should be noted that in some embodiments, the second clamping component 310 can also be provided with a drivable suction cup 230 structure so that when the internal space of the housing is expanded, the suction cups 230 in the first clamping component 210 and the second clamping component 310 move away synchronously, thereby improving the uniformity of the expansion degree on both sides of the single battery housing.

[0052] Furthermore, in some embodiments of this disclosure, such as Figure 8 and Figure 9As shown, the clamping block 220 specifically includes a first clamping part 2210 and a second clamping part 2220 arranged in sections in the vertical direction to achieve a more precise clamping effect. Specifically, the first clamping part 2210 is higher than the second clamping part 2220. The first clamping part 2210 is used to cooperate with the cell cover plate, while the second clamping part 2220 is used to cooperate with the battery casing. The second clamping part 2220 holds the casing tightly to keep the casing position fixed during the pressing process. Correspondingly, since the size of the cell cover plate is slightly smaller than that of the battery casing, the first clamping part 2210 protrudes towards the setting area of ​​the single cell compared to the second clamping part 2220. That is, the clamping distance between the two sides of the first clamping part 2210 is smaller than the clamping distance between the two sides of the second clamping part 2220. At the same time, the second clamping part 2220 with a larger clamping distance can also provide a certain expansion space for the suction cup 230 during the flaring process of the battery casing.

[0053] Based on the above embodiments, while the first clamping part 2210 clamps the cell cover plate, the cell cover plate needs to move downwards during the pressing process, while the battery casing needs to remain stable under the clamping state of the second clamping part 2220. Therefore, the friction coefficient of the first clamping part 2210 is less than that of the second clamping part 2220 to meet the movement requirements of the cell cover plate and the positional stability requirements of the battery casing. In some embodiments, the first clamping part 2210 is made of nylon, which has high strength and toughness while also having good wear resistance, while the second clamping part 2220 is made of polyurethane (PU), which also has high strength and wear resistance, thereby improving the service life of the secondary pressing equipment for the cell.

[0054] Furthermore, in the secondary pressing equipment for battery cells provided in this embodiment, the second pressing component 310 has the same structure as the first pressing component 210. Specifically, the second pressing component 310 and the first pressing component 210 are provided with the same number of pressing blocks 220 and suction cups 230, so that the opposing two sides of the single battery cell are subjected to similar effects, thereby reducing the risk of uneven deformation on both sides.

[0055] It should also be noted that in some embodiments, the first clamping component 210 and the second clamping component 310 located on both sides of the single battery can be correspondingly arranged. Here, corresponding arrangement means that in the moving direction of the first clamping component 210 and the second clamping component 310, that is, in the second direction defined in the aforementioned embodiments, each clamping block 220 on the first clamping component 210 has a clamping block 220 located on the second clamping component 310 that is on the same straight line as it. Similarly, each suction cup 230 on the first clamping component 210 has a suction cup 230 located on the second clamping component 310 that is on the same straight line as it. It should be noted that the corresponding arrangement of the first clamping component 210 and the second clamping component 310 can make the force points on both sides of the single battery correspond one-to-one, so that the housing structure of the single battery is in a uniform state under the action of the first clamping component 210 and the second clamping component 310, reducing the difficulty of inserting the cell pressing device into the housing.

[0056] In other embodiments, the second clamping component 310 is offset from the first clamping component 210. It should also be noted that the offset setting here means that in the second direction, the point of action of the first clamping component 210 on the side wall of the single battery cell does not coincide with the point of action of the second clamping component 310 on the side wall of the single battery cell. This can increase the range of action of the first clamping component 210 and the second clamping component 310 on the side wall of the single battery cell, thereby improving the structural stability of the single battery cell casing during the press-fitting process.

[0057] Furthermore, in some embodiments of this disclosure, the suction cup 230 in the first pressing assembly 210 is a vacuum suction cup structure. A vacuum generator is connected to the internal suction area of ​​the suction cup 230. After the suction cup 230 is attracted to the side wall of the single battery cell, the vacuum generator is activated to expel the air in the internal suction area of ​​the suction cup 230, thereby increasing the suction strength of the suction cup 230 to the side wall of the single battery cell. In this way, when the internal opening area of ​​the single battery cell is opened by moving the suction cup 230 to improve the smoothness of cell pressing, the connection stability between the suction cup 230 and the side wall of the single battery cell can be maintained, thus avoiding the flaring failure problem caused by the suction cup 230 detaching from the side wall of the single battery cell.

[0058] Furthermore, in some embodiments of this disclosure, such as Figure 10As shown, the secondary pressing equipment for battery cells also includes a third pressing component 810 and a fourth pressing component 820. Similarly, the distance between the third pressing component 810 and the fourth pressing component 820 is adjustable to press the battery cell from the circumferential direction of the individual cell, excluding the surfaces of the first pressing component 210 and the second pressing component 310, on both sides, ensuring the stability of the battery casing during the pressing process. Furthermore, in some embodiments, for square batteries, the first pressing component 210 and the second pressing component 310 act on the large areas of the two sides of the individual cell, while the third pressing component 810 and the fourth pressing component 820 act on the two small sides of the individual cell, ensuring that all four sides of the square battery are well pressed and positioned, thus maintaining the stability of the casing position during the cell pressing process.

[0059] It should be noted that, as Figure 11 As shown, the secondary pressing equipment for battery cells provided in this embodiment of the present disclosure also includes an upper pressing mechanism 90 arranged vertically on the top of the positioning platform 10. The upper pressing mechanism 90 can move vertically to perform secondary pressing of the single battery cells at the pressing station 110. It should be noted that, preferably, the upper pressing mechanism 90 is provided with a pressing block 910 for performing pressing action, and the pressing block 910 and the pressing station 110 are arranged one-to-one in the vertical direction and driven independently, so as to improve the production precision of the secondary pressing equipment for battery cells by allowing the pressing block 910 to be driven independently according to the requirements.

[0060] The terms "first," "second," "left side," and "right side," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may not be defined in the listed steps or units, but may include steps or units not listed.

[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A secondary pressing and assembly equipment for battery cells, characterized in that, include: Positioning platform (10), wherein a pressing station (110) for inserting individual batteries is provided on the positioning platform (10). A first slider (20) and a second slider (30) are disposed at the pressing station (110). A first pressing component (210) is disposed on the first slider (20), and a second pressing component (310) is disposed on the second slider (30). The distance between the first pressing component (210) and the second pressing component (310) is adjustable so that the single cell can be pressed from both sides of the single cell. One of the first slider (20) and the second slider (30) is an active slider (40) driven to move by a pressing drive device (50), and the other is an adjusting slider (60) driven to slide by an adjusting drive device (70). The power output direction of the pressing drive device (50) is the same as the movement direction of the active slider (40), and the power output direction of the adjusting drive device (70) intersects with the movement direction of the adjusting slider (60).

2. The cell secondary pressing equipment as described in claim 1, characterized in that, The power output direction of the adjustment drive device (70) is perpendicular to the moving direction of the adjustment slider (60).

3. The cell secondary pressing equipment as described in claim 2, characterized in that, The adjustment drive device (70) includes a linear motor (710) and a transmission guide block (720). The linear motor (710) drives the transmission guide block (720) to move in a first direction. A cam follower (7210) is fixedly installed on the transmission guide block (720). The adjusting slider (60) is set at the upper limit in the first direction and is slidably set in the second direction perpendicular to the first direction. A transmission groove (610) is opened on the adjusting slider (60). The length direction of the transmission groove (610) is intersected with both the first direction and the second direction. The cam follower (7210) is set through the transmission groove (610).

4. The cell secondary pressing equipment as described in claim 3, characterized in that, The transmission guide block (720) is slidably disposed on the linear guide rail (730), and the guiding direction of the linear guide rail (730) is along the first direction.

5. The cell secondary pressing equipment as described in claim 4, characterized in that, The transmission guide block (720) is L-shaped, and two linear guide rails (730) are spaced apart along the second direction.

6. The cell secondary pressing equipment as described in claim 3, characterized in that, The adjustment drive device (70) further includes an adjustment guide rail (740) arranged along the second direction, and the adjustment slider (60) is engaged and slidably disposed on the adjustment guide rail (740).

7. The cell secondary pressing equipment as described in claim 1, characterized in that, Two pressing stations (110) are spaced apart on the positioning platform (10), and each pressing station (110) has a set of corresponding active sliders (40) and adjustment sliders (60).

8. The cell secondary pressing equipment as described in claim 7, characterized in that, The two sets of adjusting sliders (60) corresponding to the two pressing stations (110) are both set in the interval area between the two pressing stations (110), and the two sets of active sliders (40) are respectively set on opposite sides of the two pressing stations (110).

9. The cell secondary pressing equipment as described in claim 8, characterized in that, The two sets of adjustment sliders (60) are staggered and the power output directions of the two sets of adjustment drive devices (70) are in the same straight line.

10. The cell secondary pressing equipment as described in claim 1, characterized in that, The first slider (20) is the active slider (40), and the moving direction of the first slider (20) is perpendicular to the side wall of the single cell facing the first pressing assembly (210).

11. The cell secondary pressing equipment as described in claim 1, characterized in that, The first clamping assembly (210) includes a clamping block (220) and a suction cup (230) spaced apart, wherein the clamping block (220) and the suction cup (230) act on the same side wall of the single cell.

12. The cell secondary pressing equipment as described in claim 11, characterized in that, At least two clamping blocks (220) are provided and are arranged symmetrically about the suction cup (230).

13. The cell secondary pressing equipment as described in claim 11, characterized in that, The first slider (20) is also provided with an auxiliary drive unit (240), which is connected to the suction cup (230) to drive the suction cup (230) to move relative to the first slider (20), and the power output direction of the auxiliary drive unit (240) is the same as the movement direction of the first slider (20).

14. The cell secondary pressing equipment as described in claim 11, characterized in that, The clamping block (220) includes a first clamping part (2210) and a second clamping part (2220) arranged in a vertical direction. The first clamping part (2210) is higher than the second clamping part (2220), and the first clamping part (2210) protrudes towards the setting area of ​​the single cell relative to the second clamping part (2220).

15. The cell secondary pressing equipment as described in claim 14, characterized in that, The friction coefficient of the first pressing part (2210) is less than that of the second pressing part (2220).

16. The cell secondary pressing equipment as described in claim 11, characterized in that, The second pressing component (310) has the same structure as the first pressing component (210), and the second pressing component (310) is set in a corresponding manner or offset from the first pressing component (210).

17. The cell secondary pressing equipment as described in claim 11, characterized in that, The suction cup (230) is a vacuum suction cup and has a vacuum generator connected inside.

18. The cell secondary pressing equipment as described in claim 1, characterized in that, It also includes a third clamping assembly (810) and a fourth clamping assembly (820), the distance between the third clamping assembly (810) and the fourth clamping assembly (820) being adjustable to clamp the single cell from the other two sides of the single cell circumferentially.

19. The cell secondary pressing equipment as described in claim 18, characterized in that, The first clamping component (210) and the second clamping component (310) act on the two large surfaces of the single cell respectively.

20. The cell secondary pressing equipment as described in claim 1, characterized in that, It also includes an upper pressing mechanism (90) set vertically on the top of the positioning platform (10), the upper pressing mechanism (90) is provided with pressing blocks (910) and is set one-to-one with the pressing station (110) in the vertical direction.

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