High-precision distance expanding device and distance expanding method for flexible assembly battery piece

Abstract

The invention discloses a high-precision distance expanding device and method for a flexible assembly battery piece, and belongs to the technical field of flexible batteries. The device comprises a supporting frame, a vacuum adsorption assembly, a transverse crank distance expanding assembly and a longitudinal sliding piece distance expanding assembly; the vacuum adsorption assembly is used for adsorbing a plurality of battery pieces which are tidily laid and close to each other through the bottom surface; the transverse crank distance expansion assembly is used for driving the vacuum adsorption assembly to be split from a first direction so as to separate the plurality of battery pieces at equal intervals; the longitudinal slip sheet distance expansion assembly is used for driving the vacuum adsorption assembly to be split from a second direction so as to separate the plurality of battery pieces at equal intervals; according to the device, transverse distance expansion and longitudinal distance expansion are synchronously completed through the integrated device, the three independent procedures of transverse distance expansion, circulation and longitudinal distance expansion in the prior art are effectively simplified, the production period is shortened, distance expansion is directly completed in a single device, dislocation, deviation or damage caused by circulation after transverse distance expansion of a battery piece is avoided, and the production efficiency is improved. And thus, the battery yield is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of flexible batteries, and in particular relates to a high-precision distance expansion device and distance expansion method for a flexible component battery sheet. Background Art

[0002] To achieve the flexible and rollable function of solar cells, large-size cells need to be divided into hundreds of small cells, and the small cells need to be arranged at equal intervals in both the horizontal and vertical directions.

[0003] After research, it was found that the traditional method of arranging small cells at equal spacing requires two processes, namely, horizontal expansion and vertical expansion, and a cell transfer process is required between the two expansion processes. In the actual production process, there are problems of low production efficiency and poor battery yield. There are two specific points to be improved. First, because the horizontal expansion and vertical expansion of the prior art are carried out on two independent devices, each expansion requires the process of lowering the device, adsorbing the cells, raising the device, expanding the cells, lowering the device, separating the cells, and raising the device. Two independent expansions require the above process to be repeated twice, which seriously affects the actual production efficiency. Second, because the horizontal expansion and vertical expansion of the prior art are carried out on two independent devices, the cells still need to go through the transfer process after the horizontal expansion before they can be expanded longitudinally. In the transfer process, there may be problems of disorder and misalignment of the cells, which seriously affects the accuracy of the longitudinal expansion, and thus affects the battery yield. Based on this, further research was conducted and the present invention was proposed.

[0004] It should be noted that this part of the present invention only provides background technology related to the present invention and does not necessarily constitute prior art or known technology. Summary of the invention

[0005] The present invention aims to solve the problem that the existing technology needs to go through two processes, namely, horizontal expansion and vertical expansion, to achieve equal spacing of small battery cells, and a battery cell circulation process is required between the two expansion processes, which has low production efficiency and affects the battery yield. The present invention provides a high-precision expansion device and expansion method for flexible component battery cells. The present invention can simultaneously achieve horizontal expansion and vertical expansion of battery cells on a set of devices, which not only improves production efficiency, but also reduces the negative impact of battery cell circulation, and has the advantages of reducing costs, increasing efficiency, and improving product yield.

[0006] In order to achieve the above-mentioned objectives, in a first aspect, the present invention provides a high-precision distance expansion device for flexible component battery cells, comprising a support frame, a vacuum adsorption assembly, a transverse crank distance expansion assembly and a longitudinal slide distance expansion assembly; the vacuum adsorption assembly is arranged in the support frame, and the vacuum adsorption assembly is used to adsorb multiple battery cells that are neatly laid and close to each other through the bottom surface; the transverse crank distance expansion assembly is arranged on the support frame, and part of the transverse crank distance expansion assembly passes through the vacuum adsorption assembly from a second direction, and the transverse crank distance expansion assembly is used to drive the vacuum adsorption assembly to split from a first direction to separate multiple battery cells at equal intervals; the longitudinal slide distance expansion assembly is arranged on the support frame, and part of the longitudinal slide distance expansion assembly passes through the vacuum adsorption assembly from a first direction, and the longitudinal slide distance expansion assembly is used to drive the vacuum adsorption assembly to split from a second direction to separate multiple battery cells at equal intervals; wherein, the first direction and the second direction are perpendicular to each other.

[0007] Preferably, the vacuum adsorption assembly includes a plurality of vacuum suction blocks, and the plurality of vacuum suction blocks are closely fitted in an array.

[0008] Preferably, the vacuum suction block is a long strip structure, each vacuum suction block is vertically arranged, the bottom surface of the vacuum suction block is provided with a vacuum suction port, and the top of the vacuum suction block is provided with a vacuum docking port.

[0009] Preferably, the transverse crank expansion assembly includes two transverse drive mounting plates, a first drive member, a plurality of drive gears, a plurality of drive gear transmission shafts, a plurality of three-section universal couplings and a plurality of crank shafts; the two transverse drive mounting plates are respectively arranged on two opposite side surfaces of the support frame along the second direction; a first drive member is arranged at both ends of each transverse drive mounting plate; a plurality of drive gears are connected between the two first drive members of each transverse drive mounting plate, and the plurality of drive gears are arranged in sequence and meshed with each other one by one; the tops of the plurality of drive gear transmission shafts pass through the transverse drive mounting plates and are connected one-to-one with the bottoms of the plurality of drive gears; a plurality of three-section universal couplings are connected one-to-one with the bottoms of the plurality of drive gear transmission shafts; a crank shaft is arranged between every two three-section universal couplings opposite to each other along the second direction, and the axial direction of the crank shaft is parallel to the second direction.

[0010] Preferably, each vacuum suction block has a receiving groove on both sides, and a crank shaft is passed through the first strip-shaped space formed by the receiving grooves of every two adjacent rows of vacuum suction blocks.

[0011] Preferably, the crankshaft has a first shaft diameter and a second shaft diameter in radial directions perpendicular to each other, the first shaft diameter is not larger than the maximum width of the two accommodating grooves when they are closed, and the second shaft diameter is larger than the maximum width of the two accommodating grooves when they are closed.

[0012] Preferably, the two outermost vacuum suction blocks through which the two ends of the crank shaft pass are both provided with elastic members, the elastic members are sleeved on the crank shaft and matched with its shape, and the elastic members are used to keep the crank shaft in contact with the accommodating groove.

[0013] Preferably, the longitudinal slide expansion assembly includes two groups of second driving members, two groups of movable sliders, sliding guide rails, slider positioning plates and expansion guide columns; each group of second driving members includes two second driving members, wherein the two second driving members in one group are respectively arranged at one end of the two opposite side surfaces of the support frame along the second direction, and the two second driving members in the other group are respectively arranged at the other end of the two opposite side surfaces of the support frame along the second direction; each group of movable sliders includes a plurality of movable sliders, a group of movable sliders are connected between each group of second driving members, the plurality of movable sliders in each group are arranged in sequence and the adjacent movable sliders are connected to each other, and the plurality of movable sliders between the two groups are opposite to each other along the first direction; the sliding guide rails are arranged on the support frame along the second direction, the outer side of each group of movable sliders is provided with a sliding guide rail, and each group of movable sliders is slidably connected to the corresponding sliding guide rails; the slider positioning plate is arranged on the support frame, one movable slider in each group of movable sliders is fixed by the slider positioning plate, and the two fixed movable sliders are aligned with each other; an expansion guide column is arranged between every two opposite movable sliders between the two groups, and the axial direction of the expansion guide column is parallel to the first direction.

[0014] Preferably, each vacuum suction block has two through holes distributed diagonally on its side surface, and a distance expansion guide column is passed through each second strip-shaped space formed by the through holes of each row of vacuum suction blocks.

[0015] Preferably, a limiting guide post is disposed on the top of each movable slide block, and a limiting ring is sleeved on the limiting guide posts of every two adjacent movable slide blocks to connect the adjacent movable slide blocks to each other.

[0016] Preferably, the flexible component battery sheet high-precision distance expansion device also includes a lifting component, which is connected to the top of the support frame and is used to drive the support frame to rise or fall.

[0017] Preferably, the flexible component battery sheet high-precision expansion device also includes a vacuum assembly, the vacuum assembly includes a vacuum pump and a plurality of branch pipes, the vacuum pump is connected to the plurality of branch pipes at the same time, and each branch pipe is connected to a vacuum docking port.

[0018] Preferably, the vacuum pump assembly also includes a main pipeline, a vacuum gas distribution block, multiple branch pipelines and a bus. The vacuum pump is connected to the vacuum gas distribution block through the main pipeline, the vacuum gas distribution block is connected to the bus through multiple branch pipelines, and the bus is connected to multiple vacuum docking ports through multiple branch pipelines.

[0019] In a second aspect, the present invention provides a high-precision distance expansion method for a flexible module battery sheet, the method is applied to a high-precision distance expansion device for a flexible module battery sheet, and the high-precision distance expansion method for a flexible module battery sheet comprises: Adsorbing multiple battery cells that are neatly laid and close to each other through the bottom surface of the vacuum adsorption component; The vacuum adsorption assembly is driven to split in a first direction by a lateral crank expansion assembly to separate the plurality of battery cells at equal intervals; The vacuum adsorption assembly is driven to split in a second direction by a longitudinal sliding piece expansion assembly to separate the plurality of battery cells at equal intervals; The first direction and the second direction are perpendicular to each other.

[0020] Beneficial effects of the present invention: The present invention, through the above-mentioned technical scheme, is especially a high-precision distance expansion device for flexible component battery cells, including a support frame, a vacuum adsorption component, a transverse crank distance expansion component and a longitudinal slide distance expansion component; the vacuum adsorption component is arranged in the support frame, and the vacuum adsorption component is used to adsorb multiple battery cells that are neatly laid and close to each other through the bottom surface; the transverse crank distance expansion component is arranged on the support frame, and part of the transverse crank distance expansion component passes through the vacuum adsorption component from a second direction, and the transverse crank distance expansion component is used to drive the vacuum adsorption component to split from the first direction to separate multiple battery cells at equal intervals; the longitudinal slide distance expansion component is arranged on the support frame, and part of the longitudinal slide distance expansion component passes through the vacuum adsorption component from the first direction, and the longitudinal slide distance expansion component is used to drive the vacuum adsorption component to split from the second direction to separate multiple battery cells at equal intervals; wherein the first direction and the second direction are perpendicular to each other. The device of the present invention completes the horizontal and vertical expansion synchronously through an integrated device, effectively simplifying the three independent processes of horizontal expansion, circulation, and vertical expansion in the prior art, shortening the production cycle, and completing the expansion directly in a single device, avoiding the dislocation, offset or damage of the battery cell due to circulation after horizontal expansion, thereby improving the battery yield. Furthermore, the coordinated drive of the horizontal crank expansion component and the vertical slide expansion component realizes the synchronous control of the two-dimensional expansion of the battery cell, avoiding the redundant operations of repeated lifting, adsorption and separation of the device in the traditional process.

[0021] In the high-precision distance expansion method for flexible component cells of the present invention, a plurality of cells that are neatly laid and close to each other are adsorbed by the bottom surface of the vacuum adsorption component; the vacuum adsorption component is driven to split from a first direction by the horizontal crank distance expansion component to separate the plurality of cells at equal intervals; the vacuum adsorption component is driven to split from a second direction by the vertical slide distance expansion component to separate the plurality of cells at equal intervals; wherein the first direction and the second direction are perpendicular to each other. The method of the present invention optimizes the automatic control of the entire process by collaboratively driving the horizontal and vertical distance expansion actions, realizes precise synchronization of two-dimensional distance expansion, avoids repeated lifting, adsorption and separation operations of two independent distance expansions in traditional processes, and can also avoid cell displacement or damage caused by the circulation process, and is compatible with subsequent lamination and packaging processes to ensure the efficiency of the entire production chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of the structure of a high-precision distance expansion device for a flexible module battery sheet provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a vacuum adsorption assembly provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a transverse crank extension assembly provided in an embodiment of the present invention; Figure 4 A schematic diagram of a structure in which a vacuum adsorption assembly and a lateral crank extension assembly provided in an embodiment of the present invention are assembled together; Figure 5 A schematic diagram of the cross-sectional structure of a crank shaft provided in an embodiment of the present invention; Figure 6 A schematic diagram of a structure in which adjacent vacuum suction blocks are in a close contact state provided by an embodiment of the present invention; Figure 7 A schematic diagram of the structure of adjacent vacuum suction blocks in an expanded state provided by an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a longitudinal slide extension assembly provided in an embodiment of the present invention; Fig. 9 A schematic diagram of the structure of a support frame provided by an embodiment of the present invention; Fig.10 Another structural schematic diagram of a lateral crank extension assembly provided in an embodiment of the present invention.

[0024] Description of reference numerals: 100. High-precision distance expansion device for flexible module battery cells; 110. Support frame; 111. Horizontal power support; 112. Longitudinal track plate; 113. Lifting connection support; 120, vacuum adsorption assembly; 121, vacuum suction block; 1211, vacuum suction port; 1212, vacuum docking port; 1213, accommodating groove; 1214, through hole; 1215, elastic member support column; 122, elastic member; 130, lateral crank extension assembly; 131, lateral drive mounting plate; 1311, gear cover; 132, first drive member; 1321, first drive member mounting seat; 133, drive gear; 134, drive gear transmission shaft; 135, three-section universal coupling; 136, crank shaft; 137, bevel gear; 138, bevel gear synchronous connecting shaft; 1381, synchronous shaft fixing plate; 139, crank shaft positioning plate; 140, longitudinal slide extension assembly; 141, second drive member; 142, movable slide; 143, sliding guide rail; 144, slide positioning plate; 145, extension guide post; 146, limit guide post; 147, limit ring; 150. Lifting assembly. DETAILED DESCRIPTION

[0025] In the present invention, unless otherwise specified, directional words such as "up, down, left, right" are generally understood in combination with the directions shown in the drawings and actual applications.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature 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. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article. Among them, the terms "optional" and "optional" all mean that they may be included or not included (or may be present or not).

[0029] It should be noted that in the production process of flexible solar cells, hundreds of small-sized cells need to be bonded to a flexible circuit board, with equal gaps between adjacent cells to form a flexible solar cell. In this way, when the flexible solar cell needs to be used, the flexible circuit board can be unfolded to achieve the flattening of multiple cells to increase the contact area between the cells and the sun, thereby realizing the photovoltaic power generation function of the flexible solar cell and ensuring power generation efficiency; when the flexible solar cell is not needed, the flexible circuit board can be rolled up for easy storage and save space. In this process, since there is a certain gap between adjacent cells, the cells will not interfere with the rolling of the flexible circuit board, which is convenient for the storage of the flexible solar cell.

[0030] In this embodiment, the battery cells are arranged in a rectangular shape, and the size of the battery cells is 50mm*30mm. It is obviously inappropriate to manually arrange the small pieces of such size and quantity (time-consuming and labor-intensive, with high time and labor costs, not suitable for mass production, and prone to different spacings between adjacent battery cells, affecting the quality of flexible solar cells). Therefore, the multiple battery cells are first laid out neatly and close to each other, and then the flexible component battery cell high-precision distance expansion device 100 of the present invention is used to expand the distance of the multiple battery cells. However, it is not limited to this. In other embodiments, the size of the battery cell may be 40mm*40mm, or 30mm*30mm, and the size of the battery cell is not specifically limited.

[0031] like Figure 1As shown, the present invention provides a high-precision distance expansion device 100 for a flexible component battery cell, comprising a support frame 110, a vacuum adsorption assembly 120, a transverse crank distance expansion assembly 130 and a longitudinal slide distance expansion assembly 140; the vacuum adsorption assembly 120 is arranged in the support frame 110, and the vacuum adsorption assembly 120 is used to adsorb multiple battery cells that are neatly laid and close to each other through the bottom surface; the transverse crank distance expansion assembly 130 is arranged on the support frame 110, and a part of the transverse crank distance expansion assembly 130 passes through the vacuum adsorption assembly 120 from a second direction, and the transverse crank distance expansion assembly 130 is used to drive the vacuum adsorption assembly 120 to split from a first direction to separate multiple battery cells at equal intervals; the longitudinal slide distance expansion assembly 140 is arranged on the support frame 110, and a part of the longitudinal slide distance expansion assembly 140 passes through the vacuum adsorption assembly 120 from a first direction, and the longitudinal slide distance expansion assembly 140 is used to drive the vacuum adsorption assembly 120 to split from a second direction to separate multiple battery cells at equal intervals; wherein the first direction and the second direction are perpendicular to each other. The present invention can realize the lateral expansion and longitudinal expansion of the battery cell on a set of devices at the same time. By integrating the lateral and longitudinal expansion functions, the equipment switching time is reduced and the accuracy loss caused by multiple positioning is avoided. This not only improves production efficiency but also reduces the negative impact of battery cell circulation. It has the advantages of reducing costs, increasing efficiency, and improving product yield.

[0032] It should be noted that the first direction generally refers to the horizontal transverse direction, and the second direction refers to the horizontal longitudinal direction.

[0033] Preferably, if Figure 2 As shown, the vacuum adsorption assembly 120 includes a plurality of vacuum suction blocks 121, and the plurality of vacuum suction blocks 121 are closely attached in an array. Part of the transverse crank expansion assembly 130 passes through the gaps between the plurality of vacuum suction blocks 121 in an array from a first direction, and part of the longitudinal slide expansion assembly 140 passes through the plurality of vacuum suction blocks 121 in an array from a second direction. The transverse crank expansion assembly 130 opens the gaps between the plurality of vacuum suction blocks 121 to split the plurality of vacuum suction blocks 121 from the first direction, thereby separating the plurality of battery cells at equal intervals; the longitudinal slide expansion assembly 140 moves the plurality of vacuum suction blocks 121 bodies relative to each other by a certain distance to split the plurality of vacuum suction blocks 121 from the second direction, thereby separating the plurality of battery cells at equal intervals.

[0034] It is understandable that the modular array design can adapt to the layout of battery cells of different sizes, while facilitating maintenance and partial replacement, reducing the cost of use. The tight fit ensures that there is no displacement or offset of the battery cells during initial adsorption, laying the foundation for subsequent precise distance expansion.

[0035] Preferably, if Figure 2As shown, the vacuum suction block 121 is a long strip structure, each vacuum suction block 121 is vertically arranged, the bottom surface of the vacuum suction block 121 has a vacuum suction port 1211, and the top of the vacuum suction block 121 has a vacuum docking port 1212. The vertically arranged long strip structure can provide a continuous suction area and maximize the use of the space height.

[0036] It can be understood that the vacuum suction port 1211 at the bottom adopts a stepped gradually expanding flow channel design to ensure that the vacuum suction port 1211 has sufficient adsorption area and enhances the adsorption force. The vacuum docking port 1212 at the top realizes quick air circuit connection for easy maintenance and replacement.

[0037] Preferably, if Figure 3 As shown, the lateral crank extension assembly 130 includes two lateral drive mounting plates 131, a first drive member 132, a plurality of drive gears 133, a plurality of drive gear transmission shafts 134, a plurality of three-section universal couplings 135 and a plurality of crank shafts 136; the two lateral drive mounting plates 131 are respectively arranged on two opposite sides of the support frame 110 along the second direction; a first drive member 132 is arranged on both ends of each lateral drive mounting plate 131; the two first drive members 132 of each lateral drive mounting plate 131 A plurality of driving gears 133 are connected between the plurality of driving gears 133, which are arranged in sequence and mesh with each other one by one; the tops of the plurality of driving gear transmission shafts 134 pass through the transverse driving mounting plate 131 and are connected one by one with the bottoms of the plurality of driving gears 133; a plurality of three-section universal couplings 135 are connected one by one with the bottoms of the plurality of driving gear transmission shafts 134; a crank shaft 136 is arranged between every two three-section universal couplings 135 opposite to each other along the second direction, and the axial direction of the crank shaft 136 is parallel to the second direction.

[0038] Preferably, the first driving member 132 is disposed on the transverse driving mounting plate 131 via a first driving member mounting seat 1321 .

[0039] It can be understood that the number of driving gears 133 can be an odd number or an even number. When the number of driving gears 133 is an odd number, the rotation directions of the driving gears 133 at the outermost ends are consistent, so the rotation directions of the output shafts of the two first driving members 132 are also consistent. When the number of moving gears is an even number, the rotation directions of the driving gears 133 at the outermost ends are opposite, so the rotation directions of the output shafts of the two first driving members 132 are also opposite. The number of driving gears 133 does not affect the technical solution of the present invention.

[0040] It should be noted that the number of the driving gears 133 on the two transverse driving mounting plates 131 should be the same and opposite to each other, and the rotation directions of the driving gears 133 and the output shaft of the first driving member 132 should also correspond to each other.

[0041] It should be noted that the number of the driving gear transmission shaft 134, the three-section universal coupling 135 and the crank shaft 136 should be consistent with the number of the driving gears 133 on a driving mounting plate.

[0042] During specific operation, the first driving members 132 on the two transverse driving mounting plates 131 operate synchronously, respectively driving the driving gears 133 on their respective transverse driving mounting plates 131 to rotate, and the rotation of each driving gear 133 drives the driving gear transmission shaft 134 at the bottom to rotate, and the driving gear transmission shaft 134 is transmitted to the crank shaft 136 through the three-section universal coupling 135 and then drives the crank shaft 136 to rotate, so the rotation directions of every two adjacent crank shafts 136 are also opposite.

[0043] Furthermore, if Figure 3 As shown, the lateral crank expansion assembly 130 also includes a gear cover 1311, and each lateral drive mounting plate 131 is also provided with a semi-open gear cover 1311, each gear cover 1311 is used to cover the outer side and top of the first driving member 132 and the outer side and top of the driving gear 133 on each lateral drive mounting plate 131, so as to prevent objects from entering the driving gear 133 during the operation of the device and affecting the operation or even causing a safety accident.

[0044] Furthermore, if Figure 3 As shown, the lateral crank expansion assembly 130 also includes two bevel gears 137, two synchronization shaft fixing plates 1381 and a bevel gear synchronization connecting shaft 138. The two bevel gears 137 are respectively arranged on the driving gears 133 located in the middle of the two lateral drive mounting plates 131 (the number of the driving gears 133 is an odd number, that is, the driving gear 133 in the middle, and the number of the driving gears 133 is an even number, that is, one of the two driving gears 133 in the middle), and the two synchronization shaft fixing plates 1381 are respectively arranged on the inner side of the middle part of each of the two lateral drive mounting plates 131. The bevel gear synchronization connecting shaft 138 is arranged between the two synchronization shaft fixing plates 1381 and its axial direction is parallel to the second direction. The two ends of the bevel gear synchronization connecting shaft 138 also have gears and are respectively meshed with the two bevel gears 137. During specific operation, the present invention first controls the rotation speed of the first driving member 132 to ensure that the rotation speeds of the driving gears 133 on the two driving mounting plates are consistent, and then further ensures the rotation speeds of the driving gears 133 on both sides are consistent through the bevel gear 137 and the bevel gear synchronous connecting shaft 138, thereby ensuring the accuracy of the battery cell expansion distance.

[0045] Preferably, the first driving member 132 is a driving motor, a pneumatic motor or a hydraulic motor.

[0046] Preferably, if Figures 2 to 4As shown, each vacuum suction block 121 has a receiving groove 1213 on both sides, and a crank shaft 136 is inserted into the first strip-shaped space formed by the receiving grooves 1213 of each two adjacent rows of vacuum suction blocks 121. The receiving groove 1213 realizes the dual functions of mechanical linkage and positioning. The crank shaft 136 can abut against the receiving groove 1213 to expand the gaps between the multiple vacuum suction blocks 121. At the same time, the receiving groove 1213 also limits the movement trajectory of the crank shaft 136 to prevent plane deviation during lateral expansion.

[0047] Preferably, if Figures 5 to 7 As shown, the crankshaft 136 has a first axial diameter and a second axial diameter in a radial direction perpendicular to each other, the first axial diameter is not greater than the maximum width of the two receiving grooves 1213 when they are closed, and the second axial diameter is greater than the maximum width of the two receiving grooves 1213 when they are closed. When the lateral crank extension assembly 130 has not yet started to extend, the first axial diameter of each crankshaft 136 is in the horizontal direction, and the second axial diameter is in the vertical direction. At this time, because the first axial diameter is not greater than the maximum width of the two receiving grooves 1213 when they are closed, the vacuum suction blocks 121 adjacent to each other in each two rows are still in a close contact state. After the lateral crank extension assembly 130 starts to extend, the first axial diameter of each crankshaft 136 is in the vertical direction, and the second axial diameter is in the horizontal direction. At this time, because the second axial diameter is greater than the maximum width of the two receiving grooves 1213 when they are closed, the vacuum suction blocks 121 adjacent to each other in each two rows expand to split from the first direction to separate multiple battery cells at equal intervals.

[0048] During specific operation, in the initial state, the first axial diameter of each crank shaft 136 is in the horizontal direction, and the second axial diameter is in the vertical direction; when the distance expansion begins, the rotation directions of every two adjacent crank shafts 136 are opposite, the first axial diameter of each crank shaft 136 gradually turns to the vertical direction, and the second axial diameter gradually turns to the horizontal direction, and each crank shaft 136 gradually applies thrust to the vacuum suction blocks 121 on both sides, and the space between every two adjacent vacuum suction blocks 121 is gradually expanded. Finally, when the first axial diameter of each crank shaft 136 is in the vertical direction and the second axial diameter is in the horizontal direction, the space between every two adjacent vacuum suction blocks 121 is expanded to a preset distance.

[0049] It should be noted that, during the above operation, because the distance between the vacuum suction blocks 121 will gradually expand, the connector connecting the three-section universal coupling 135 and the crank shaft 136 will produce a certain rotation angle offset to the outside (the offset angle is larger the further to the outside), so that the crank shaft 136 will also synchronously move a certain distance to the outside, ensuring that there is enough displacement space between the vacuum suction blocks 121. At the same time, when the vacuum suction blocks 121 are horizontally expanded, they move on the expansion guide pillars 145, which can also ensure that each row of vacuum suction blocks 121 are expanded from each other along the first direction.

[0050] More preferably, Fig.10 As shown, at this time, a crank shaft positioning plate 139 is also fixedly provided on each synchronous shaft fixing plate 1381, and the bottom of the crank shaft positioning plate 139 is fixedly connected to the three-section universal coupling 135 in the middle. The crank shaft positioning plate 139 is used to fix the three-section universal coupling 135 in the middle. When the distance is expanded, the crank shaft 136 in the middle will not be displaced to both sides, and the crank shafts 136 and vacuum suction blocks 121 on both sides will move to two opposite outer sides respectively. In this way, it can be avoided that all crank shafts 136 are displaced to the left and right together when the distance is expanded, and adjacent crank shafts 136 affect each other. The crank shaft positioning plate 139 can effectively improve the expansion accuracy.

[0051] Preferably, if Figure 2 , Figure 6 and Figure 7 As shown, the two outermost vacuum suction blocks 121 through which the two ends of the crank shaft 136 pass are both provided with elastic members 122, which are sleeved on the crank shaft 136 and match its shape, and are used to keep the crank shaft 136 in contact with the accommodating groove 1213. Specifically, the two outermost vacuum suction blocks 121 through which the two ends of the crank shaft 136 pass are both provided with two elastic member support columns 1215, the axial direction of the elastic member support columns 1215 is parallel to the axial direction of the crank shaft 136, and the two elastic member support columns 1215 are horizontally spaced apart on the vacuum suction blocks 121 and are located below the crank shaft 136.

[0052] Preferably, if Figure 2 , Figure 6 and Figure 7 As shown, the elastic member 122 is a return spring, and the return spring specifically includes a circular spring portion and two supporting portions arranged at the bottom of the spring portion. The spring portion of the return spring is sleeved on the crank shaft 136, and the two supporting portions of the return spring are respectively mounted on two elastic member support columns 1215 adjacent to the two outermost vacuum suction blocks 121. At this time, the bottom of the return spring is connected to the two vacuum suction blocks 121, and the top of the return spring is connected to the crank shaft 136, thereby ensuring that when the crank shaft 136 expands the vacuum suction block 121 at a rotation angle, the crank shaft 136 maintains contact with the accommodating groove 1213, thereby ensuring that the displacement of the crank shaft 136 and the vacuum suction block 121 is uniform.

[0053] Preferably, if Figure 8As shown, the longitudinal slide extension assembly 140 includes two groups of second driving members 141, two groups of movable sliders 142, sliding guide rails 143, slider positioning plates 144 and extension guide posts 145; each group of second driving members 141 includes two second driving members 141, wherein the two second driving members 141 in one group are respectively arranged at one end of two opposite side surfaces of the support frame 110 along the second direction, and the two second driving members 141 in the other group are respectively arranged at the other end of two opposite side surfaces of the support frame 110 along the second direction; each group of movable sliders 142 includes a plurality of movable sliders 142, each group of second driving members 141 is connected with a group of movable sliders 142, and the plurality of movable sliders 142 in each group are arranged in sequence and Adjacent movable sliders 142 are connected to each other, and multiple movable sliders 142 between two groups are opposite to each other along the first direction; the sliding guide rails 143 are arranged on the support frame 110 along the second direction, and the outer side of each group of movable sliders 142 is provided with a sliding guide rail 143, and each group of movable sliders 142 is slidably connected to the corresponding sliding guide rail 143; the slider positioning plate 144 is arranged on the support frame 110, and one movable slider 142 in each group of movable sliders 142 is fixed by the slider positioning plate 144, and the two fixed movable sliders 142 are aligned with each other; an expansion guide column 145 is arranged between every two opposite movable sliders 142 between the two groups, and the axial direction of the expansion guide column 145 is parallel to the first direction.

[0054] During specific operation, the two second driving members 141 in each group are respectively connected to the most adjacent movable sliders 142, and the two second driving members 141 in each group respectively drive the most adjacent movable sliders 142 to move in the direction of each second driving member 141 itself. Because every two adjacent movable sliders 142 are connected to each other, when the outermost movable slider 142 moves outward, it will pull the inner movable sliders 142 one by one to move outward along the sliding guide rail 143. At the same time, because there is one movable slider 142 in each group of movable sliders 142 fixed by the slider positioning plate 144, the movable sliders 142 on both sides gradually expand at equal distances until the movable sliders 142 on both sides of the fixed movable slider 142 are also expanded. At the same time, the expansion guide pillars 145 between every two relative movable sliders 142 between the two groups also move synchronously with the movement of the movable sliders 142.

[0055] Preferably, if Figure 8As shown, the side of the movable slider 142 is slidably connected to the sliding guide rail 143 through a guide block. In order to further enhance the guiding ability of the guide block, the width of the guide block will be greater than the width of the movable slider 142. In this way, the guide blocks of each group of movable sliders 142 cannot be set on the same sliding guide rail 143 at the same time. Therefore, two upper and lower parallel sliding guide rails 143 are set on the side of each group of movable sliders 142 at the same time, so that the guide blocks of two adjacent movable sliders 142 in each group are respectively set on the upper and lower sliding guide rails 143. In this way, when the movable slider 142 is displaced, the guide blocks between each other will not affect each other.

[0056] Preferably, the second driving member 141 is a pneumatic cylinder, an electric cylinder or a hydraulic cylinder.

[0057] Preferably, if Figure 2 and Figure 8 As shown, each vacuum suction block 121 has two through holes 1214 distributed diagonally on its side, and each second strip-shaped space formed by the through holes 1214 of each row of vacuum suction blocks 121 is penetrated by a distance expansion guide post 145. Because each vacuum suction block 121 has two through holes 1214, each row of vacuum suction blocks 121 is penetrated by two distance expansion guide posts 145 arranged along the first direction.

[0058] Preferably, because the vacuum suction block 121 needs to move on the expansion guide column 145 when expanding the distance laterally, the stability of the movement needs to be ensured. The present invention chooses to set through holes 1214 at the diagonal positions above and below the position where the crank shaft 136 of the vacuum suction block 121 passes. In this way, the mutual influence between the expansion guide column 145 and the crank shaft 136 can be avoided. At the same time, the diagonal setting can also ensure the stability of the vacuum suction block 121 in moving on the expansion guide column 145.

[0059] Preferably, if Figure 8As shown, a limiting guide post 146 is provided at the top of each movable slider 142, and a limiting ring 147 is sleeved on the limiting guide posts 146 of every two adjacent movable sliders 142 to connect the adjacent movable sliders 142. The limiting ring 147 is an elliptical ring structure, and a limiting ring 147 is sleeved on every two adjacent limiting guide posts 146. When the longitudinal slide extension assembly 140 has not yet started to extend, the two adjacent movable sliders 142 are in a close contact state, the major diameter of the limiting ring 147 is greater than the distance between the two adjacent limiting guide posts 146, and the limiting ring 147 does not limit. When the longitudinal slide expansion assembly 140 starts to expand, the outer movable slider 142 gradually moves outward until the major diameter of the limit ring 147 is equal to the distance between two adjacent limit guide pillars 146. At this time, the outer movable slider 142 will pull the inner movable slider 142 through the limit ring 147, and the expansion distance between every two adjacent movable sliders 142 is the major diameter of the limit ring 147.

[0060] Preferably, if Figure 1 As shown, the flexible component battery sheet high-precision distance expansion device 100 also includes a lifting component 150, which is connected to the top of the support frame 110 and is used to drive the support frame 110 to rise or fall. The lifting component 150 includes a third driving member and a lifting frame, the third driving member is connected to the lifting frame, and the lifting frame is connected to the top of the support frame 110. The third driving member can drive the support frame 110 to rise or fall through the lifting frame, thereby driving the entire distance expansion device to rise or fall, so as to facilitate the realization of the distance expansion function.

[0061] Preferably, the third driving member is a pneumatic cylinder, an electric cylinder or a hydraulic cylinder.

[0062] Preferably, if Fig. 9 As shown, the support frame 110 includes two lateral power brackets 111 arranged opposite to each other along a first direction and two longitudinal track plates 112 arranged opposite to each other along a second direction. The two lateral power brackets 111 and the two longitudinal track plates 112 are combined to form a rectangular bracket structure with a hollow middle portion. A portion of the middle portion of the longitudinal track plate 112 extends upward in the vertical direction. A lifting connection bracket 113 is provided on the extended portion of the two longitudinal track plates 112. The lifting assembly 150 is fixedly connected to the lifting connection bracket 113.

[0063] The two transverse drive mounting plates 131 of the transverse crank extender assembly 130 are respectively arranged on the two transverse power brackets 111. The two second drive members 141 in one group of the longitudinal slide extender assembly 140 are respectively arranged at one end of the outer side surface of the two transverse power brackets 111, and the two second drive members 141 in the other group are respectively arranged at the other end of the outer side surface of the two transverse power brackets 111.

[0064] Preferably, the flexible component battery cell high-precision distance expansion device 100 also includes a vacuum pump component, which includes a vacuum pump and multiple branch pipes. The vacuum pump is connected to the multiple branch pipes at the same time, and each branch pipe is connected to a vacuum docking port 1212 to realize the vacuum adsorption function of each vacuum suction port 1211 to ensure the vacuum adsorption effect.

[0065] Preferably, the vacuum pump assembly also includes a main pipeline, a vacuum gas distribution block, multiple branch pipelines and a bus. The vacuum pump is connected to the vacuum gas distribution block through the main pipeline, the vacuum gas distribution block is connected to the bus through multiple branch pipelines, the bus is connected to multiple vacuum docking ports 1212 through multiple branch pipelines, the vacuum gas distribution block is used to achieve a primary gas distribution function, and the bus is used to achieve a secondary gas distribution function. Specifically, through the two-stage gas distribution of the vacuum gas distribution block and the bus, the thicker main pipeline is divided into multiple thinner branch pipelines step by step, and connected to multiple vacuum docking ports 1212, avoiding the situation where the vacuum pump directly leads to multiple vacuum pipelines connected to multiple vacuum docking ports 1212, thereby avoiding the problem of uneven airflow in multiple vacuum pipelines due to large changes in pipeline diameters, and then realizing a step-by-step transition function, ensuring that the pressure of multiple pipelines (multiple branch pipelines or multiple branch pipelines) at the same level is balanced, so that the entire vacuum pumping system is stable and reliable.

[0066] In a second aspect, the present invention provides a high-precision distance expansion method for a flexible module battery sheet, the method is applied to a high-precision distance expansion device 100 for a flexible module battery sheet, and the high-precision distance expansion method for a flexible module battery sheet includes: The bottom surface of the vacuum adsorption assembly 120 adsorbs a plurality of battery cells that are neatly laid and close to each other; The vacuum adsorption assembly 120 is driven to split in a first direction by a lateral crank extension assembly 130 to separate the plurality of battery cells at equal intervals; The vacuum adsorption assembly 120 is driven to split in the second direction by the longitudinal slide expansion assembly 140 to separate the plurality of battery cells at equal intervals; The first direction and the second direction are perpendicular to each other.

[0067] Preferably, the high-precision distance extension method for flexible module battery sheets of the present invention may also include: Before adsorbing the battery cells, the support frame 110 is driven downward by the lifting assembly 150 to make the bottom surface of the vacuum adsorption assembly 120 close to the multiple battery cells; After the battery cell is adsorbed, the support frame 110 is driven to rise by the lifting assembly 150 and begins to expand the distance through the transverse crank expansion assembly 130 and the longitudinal slide expansion assembly 140; After the distance expansion is completed, the support frame 110 is driven down by the lifting assembly 150 so that the vacuum adsorption assembly 120 can put down the multiple battery cells; After the battery cells are put down, the support frame 110 is driven to rise by the lifting assembly 150 .

[0068] The method of the present invention optimizes the automatic control of the entire process by collaboratively driving the lateral and longitudinal expansion actions, realizes the precise synchronization of two-dimensional expansion, and avoids the repeated lifting, adsorption and separation operations of two independent expansions in the traditional process. At the same time, the method can also avoid the displacement or damage of the battery cells caused by the circulation process, and is compatible with the subsequent lamination and packaging processes to ensure the efficiency of the entire production chain.

[0069] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A high-precision distance expansion device for a flexible module battery sheet, characterized in that: include: Support frame; A vacuum adsorption component, which is arranged in the support frame and is used to adsorb a plurality of battery cells that are neatly laid and close to each other through a bottom surface; A transverse crank expansion assembly, wherein the transverse crank expansion assembly is disposed on the support frame, a portion of the transverse crank expansion assembly passes through the vacuum adsorption assembly from the second direction, and the transverse crank expansion assembly is used to drive the vacuum adsorption assembly to split from the first direction to separate the plurality of battery cells at equal intervals; A longitudinal slide expansion assembly, wherein the longitudinal slide expansion assembly is arranged on the support frame, a portion of the longitudinal slide expansion assembly passes through the vacuum adsorption assembly from a first direction, and the longitudinal slide expansion assembly is used to drive the vacuum adsorption assembly to split from a second direction to separate the plurality of battery cells at equal intervals; The first direction and the second direction are perpendicular to each other.

2. The high-precision distance expansion device for flexible module battery cells according to claim 1, characterized in that: The vacuum adsorption assembly includes a plurality of vacuum suction blocks, and the plurality of vacuum suction blocks are closely fitted in an array.

3. The high-precision distance expansion device for flexible module battery cells according to claim 2, characterized in that: The vacuum suction block is a long strip structure, each of the vacuum suction blocks is vertically arranged, the bottom surface of the vacuum suction block is provided with a vacuum suction port, and the top of the vacuum suction block is provided with a vacuum docking port.

4. The high-precision distance expansion device for flexible module battery sheet according to claim 2, characterized in that: The lateral crank extension assembly comprises: Two transverse drive mounting plates, the two transverse drive mounting plates are respectively arranged on two opposite side surfaces of the support frame along the second direction; A first driving member, wherein each of the two ends of the transverse driving mounting plate is provided with a first driving member; A plurality of driving gears, wherein a plurality of driving gears are connected between two of the first driving members of each of the transverse driving mounting plates, and the plurality of driving gears are arranged in sequence and mesh with each other one by one; A plurality of driving gear transmission shafts, the tops of the plurality of driving gear transmission shafts passing through the transverse driving mounting plate and connected to the bottoms of the plurality of driving gears in a one-to-one correspondence; A plurality of three-section universal couplings, wherein the plurality of three-section universal couplings are connected to the bottoms of the plurality of driving gear transmission shafts in a one-to-one correspondence; A plurality of crankshafts are provided, and a crankshaft is provided between every two of the three-section universal couplings that are opposite to each other along the second direction, and the axial direction of the crankshaft is parallel to the second direction.

5. The high-precision distance expansion device for flexible module battery sheet according to claim 4, characterized in that: Each of the vacuum suction blocks has a receiving groove on both sides, and a crank shaft is passed through the first strip-shaped space formed by the receiving grooves of each two adjacent rows of the vacuum suction blocks.

6. The high-precision distance expansion device for flexible module battery sheet according to claim 5, characterized in that: The crankshaft has a first shaft diameter and a second shaft diameter in a radial direction perpendicular to each other, the first shaft diameter is not larger than the maximum width of the two accommodating grooves when they are closed, and the second shaft diameter is larger than the maximum width of the two accommodating grooves when they are closed.

7. The high-precision distance expansion device for flexible module battery sheet according to claim 5, characterized in that: The two outermost vacuum suction blocks through which the two ends of the crank shaft pass are both provided with elastic members, the elastic members are sleeved on the crank shaft and matched with its shape, and the elastic members are used to keep the crank shaft in contact with the accommodating groove.

8. The high-precision distance expansion device for flexible module battery sheet according to claim 2, characterized in that: The longitudinal slide extension assembly comprises: Two groups of second driving members, each group of the second driving members includes two second driving members, wherein the two second driving members in one group are respectively arranged at one end of two opposite side surfaces of the supporting frame along the second direction, and the two second driving members in the other group are respectively arranged at the other end of two opposite side surfaces of the supporting frame along the second direction; Two groups of movable sliders, each group of the movable sliders includes a plurality of the movable sliders, each group of the second driving members is connected with a group of the movable sliders, the plurality of movable sliders in each group are arranged in sequence and the adjacent movable sliders are connected to each other, and the plurality of movable sliders between the two groups are opposite to each other along the first direction; A sliding guide rail, wherein the sliding guide rail is arranged on the support frame along the second direction, the sliding guide rail is arranged on the outer side of each group of movable sliders, and each group of movable sliders is slidably connected to the corresponding sliding guide rail; A slider positioning plate, wherein the slider positioning plate is arranged on the support frame, one of the movable sliders in each group of the movable sliders is fixed by the slider positioning plate, and the two fixed movable sliders are aligned with each other; An expansion guide column is provided between each two opposite movable sliding blocks in the two groups, and the axial direction of the expansion guide column is parallel to the first direction.

9. The high-precision distance expansion device for flexible module battery sheet according to claim 8, characterized in that: Each of the vacuum suction blocks has two through holes distributed diagonally on its side surface, and each second strip-shaped space formed by the through holes of each row of the vacuum suction blocks is penetrated by one of the distance-expanding guide pillars.

10. The high-precision distance expansion device for flexible module battery sheet according to claim 8, characterized in that: A limiting guide column is arranged on the top of each movable slide block, and a limiting ring is sleeved on the limiting guide columns of every two adjacent movable slide blocks so as to connect the adjacent movable slide blocks to each other.

11. The high-precision distance expansion device for flexible module battery sheet according to claim 1, characterized in that: The flexible component battery sheet high-precision distance expansion device also includes a lifting component, which is connected to the top of the support frame and is used to drive the support frame to rise or fall.

12. The high-precision distance expansion device for flexible module battery sheet according to claim 3, characterized in that: The flexible component battery sheet high-precision expansion device also includes a vacuum pump component, which includes a vacuum pump and multiple branch pipes. The vacuum pump is connected to multiple branch pipes at the same time, and each branch pipe is connected to one of the vacuum docking ports.

13. The high-precision distance expansion device for flexible module battery sheet according to claim 12, characterized in that: The vacuum pump assembly also includes a main pipeline, a vacuum gas distribution block, multiple branch pipelines and a bus. The vacuum pump is connected to the vacuum gas distribution block through the main pipeline, the vacuum gas distribution block is connected to the bus through multiple branch pipelines, and the bus is connected to multiple vacuum docking ports through multiple branch pipelines.

14. A high-precision distance expansion method for a flexible module battery cell, characterized in that: The method is applied to the flexible module battery sheet high-precision distance expansion device according to any one of claims 1 to 13, and the flexible module battery sheet high-precision distance expansion method comprises: Adsorbing a plurality of battery cells that are neatly laid and close to each other through the bottom surface of the vacuum adsorption assembly; The vacuum adsorption assembly is driven to split in a first direction by the transverse crank expansion assembly to separate the plurality of battery cells at equal intervals; The vacuum adsorption assembly is driven to split in a second direction by the longitudinal slide expansion assembly to separate the plurality of battery cells at equal intervals; The first direction and the second direction are perpendicular to each other.

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