Battery cell self-adaptive flexible clamping fixture and battery cell production line thereof

Abstract

The invention discloses a battery cell self-adaptive flexible clamping fixture and a battery cell production line thereof. The battery cell self-adaptive flexible clamping fixture comprises a supporting assembly, a transfer connecting assembly, a flexible downward pressing assembly and a flexible upward supporting assembly, the supporting assembly comprises a bearing part and a connecting part, and the bearing part is slidably embedded in a linear sliding rail of an automatic battery cell production line; the connecting piece is arranged on the bearing piece; the transfer connecting assembly comprises a transfer connecting piece, a battery cell pressing transfer piece and a tab pressing transfer piece; the flexible pressing assembly comprises a battery cell pressing piece and a tab pressing piece; the flexible upper supporting assembly comprises a lower bearing part, a bearing platform and an upper supporting part. According to the invention, the automatic bearing and clamping of the battery cell are realized, a multi-stage self-adaptive upward pressing and lifting flexible clamping function is realized, the extrusion deformation of the battery cell in the clamping process is effectively reduced, the synchronous linkage clamping of the battery cell body and the tab is realized, and the automatic bending of the tab in the clamping process is realized.

Description

Technical Field

[0001] The present invention relates to the field of automatic production equipment for new energy batteries, and in particular to a battery cell adaptive flexible clamping fixture and a battery cell production line thereof. Background Art

[0002] The battery cell is the core structure of the lithium-ion battery, which refers to a single electrochemical cell containing positive and negative electrodes. It is not used directly. The battery cell and the protection circuit board form a battery that can be used directly.

[0003] The battery cell includes a battery cell body, which is generally a block or columnar structure, with multiple layers of positive and negative electrodes stacked inside and filled with electrolyte to form a battery cell entity. A flexible sheet-like ear extending outward is provided on one end wall of the battery cell body for connecting to the circuit to realize the power supply function.

[0004] The production process of battery cells involves multiple processes such as tab shaping, tab cutting, and rubber encapsulation. Each manufacturing process is arranged at a different manufacturing station. In the battery cell manufacturing production line, the battery cells need to be clamped and fixed, and then the battery cells are completed in different manufacturing processes at multiple manufacturing stations. Based on the battery cell manufacturing process requirements, a fixture for clamping battery cells and driving the battery cells to be transferred between different manufacturing stations needs to be designed in the battery cell automated manufacturing production line. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for automatically loading and clamping battery cells in response to the deficiencies of the above-mentioned prior art, and to have a multi-level adaptive upward pressure and flexible clamping function, which effectively reduces the extrusion deformation of the battery cells during the clamping process, realizes the synchronous linkage clamping of the battery cell body and the pole ear, and realizes the automatic bending of the pole ear during the clamping process, thereby providing an adaptive flexible clamping fixture for the battery cells and its battery cell production line.

[0006] The technical solution adopted by the present invention is as follows: A cell self-adaptive flexible clamping fixture is used to clamp a cell and drive the cell to linearly slide on a linear rail, and includes a support assembly, a transfer connection assembly, a flexible pressing-down assembly, and a flexible lifting assembly. Among them, the support assembly includes a carrier and a connecting piece. Among them, the carrier is slidably embedded in the linear slide rail of the cell automatic production line and linearly moves along the direction of the linear slide rail under the drive of an external power source; the connecting piece is arranged on the carrier; the transfer connection assembly includes a transfer connecting piece, a cell pressing transfer piece, and an ear pressing transfer piece. Among them, the transfer connecting piece is arranged on one side of the connecting piece and is slidably connected to the connecting piece in the vertical direction; the cell pressing transfer piece is slidably connected to one side of the transfer connecting piece in the vertical direction and maintains a downward pressing state through downward elastic force; the ear pressing transfer piece is slidably arranged on the cell pressing transfer piece in the vertical direction; the flexible pressing-down assembly includes a cell pressing piece and an ear pressing piece. Among them, the cell pressing piece is connected to the cell pressing transfer piece and moves with the cell pressing transfer piece to maintain a state of pressing down the cell to press down the cell body; the ear pressing piece is connected to the ear pressing transfer piece and moves with the ear pressing transfer piece to press down the ear; the flexible lifting assembly includes a lower carrier, a carrying platform, and a lifting piece. Among them, the lower carrier is flexibly connected to the carrier of the support assembly; the carrying platform is horizontally and fixedly connected to the side of the transfer connecting piece to carry the cell; the lifting piece is slidably connected to the transfer connecting piece in the vertical direction, the lower part of the lifting piece is connected to the lower carrier, and the upper part of the lifting piece is flexibly connected to the ear pressing piece to lift the ear.

[0007] Preferably, the carrier includes a base, a linear rail slider, a positioning fork block, and a collision prevention block. Among them, the base is horizontally arranged; the linear rail slider is arranged at the bottom of the base, and a linear rail groove is provided in the linear rail slider for slidably nesting on the linear slide rail; the positioning fork block is arranged at the lower part of the base for positioning during linear sliding; the collision prevention block is arranged at the side of the base and extends horizontally, and the collision prevention block is made of a flexible material for blocking and limiting during sliding; a support platform extending horizontally outward is provided on one side of the base.

[0008] Preferably, the connecting piece includes a T-shaped frame, a first connecting block, and a first spring. Among them, the T-shaped frame is arranged on the base and extends in the vertical direction; the first connecting block is fixed on the side wall of the T-shaped frame; the first spring is vertically arranged, and the bottom of the first spring is connected to the base.

[0009] Preferably, the transfer connecting piece includes a first sliding seat, a first sliding rail, a second sliding rail, an extending support block and a third sliding rail. Among them, the first sliding seat is vertically arranged on the side of the T-shaped frame. A first sliding rail is vertically arranged on one side wall of the first sliding seat close to the T-shaped frame. The first sliding rail is slidably inserted into the first connecting block, so that the first sliding seat and the T-shaped frame are slidably connected in the vertical direction; the lower part of the first sliding seat is connected to the top of the first spring to provide elastic buffering through the first spring; the second sliding rail and the third sliding rail are respectively arranged on the other side wall of the first sliding seat and extend vertically respectively; the extending support block is arranged on the other side wall of the first sliding seat and extends horizontally outwards; a vertically extending extending guide bar is arranged at the bottom of the first sliding seat, and the extending guide bar is slidably inserted into the base to guide and limit during the vertical sliding process.

[0010] Preferably, the battery cell pressing transfer piece includes a second sliding seat, a second connecting block and a second spring. Among them, the second sliding seat is vertically arranged on the side of the first sliding seat; the second connecting block is fixed on the side wall of the second sliding seat close to the first sliding seat and is slidably connected to the second sliding rail; a vertically extending limiting sliding groove is formed inside the second sliding seat; the extending support block is horizontally inserted into the limiting sliding groove; the second spring is vertically arranged in the limiting sliding groove, the top of the second spring is connected to the extending support block, and the bottom abuts against the bottom of the limiting sliding groove. In the natural state, the elastic force of the second spring has a tendency to drive the second sliding seat to move downwards; an installation sliding groove is formed on the second sliding seat, and the installation sliding groove penetrates through the side wall of the second sliding seat.

[0011] Preferably, the tab pressing transfer piece includes a third sliding seat, a third connecting block and a connecting spring. Among them, the third sliding seat is arranged in the installation sliding groove. A third connecting block is fixed on the side wall of the third sliding seat close to the second sliding seat. The third connecting block is slidably embedded on the third sliding rail, so that the third sliding seat is slidably connected to the first sliding seat and can move freely in the installation sliding groove; the connecting spring is vertically arranged below the third sliding seat, and the top of the connecting spring is connected to the bottom of the third sliding seat.

[0012] Preferably, the battery cell pressing piece includes a connecting seat and a battery cell pressing block. Among them, the connecting seat is horizontally connected to the side wall of the second sliding seat; the battery cell pressing block is arranged at the lower part of the connecting seat, and the battery cell pressing block moves downwards along with the second sliding seat and the connecting seat to press the battery cell body.

[0013] Preferably, the tab pressing member includes a support base, a tab pressing block, a first connecting column and a limiting column. Among them, the support base is horizontally arranged on the side wall of the third sliding seat; the tab pressing block is arranged on the support base and is fixedly connected through the first connecting column. The outer side of the tab pressing block extends obliquely downward to the outside of the support base for pressing down the tab; the limiting column includes at least two, and at least two limiting columns are vertically arranged on the support base for downwardly resisting the bearing platform when pressing the tab so as to perform ultimate limit.

[0014] Preferably, the lower bearing member includes a third spring. The third spring is vertically arranged on the support platform horizontally extending outward from the base; the bearing platform is horizontally arranged on the side wall of the first sliding seat and is located below the tab pressing and rotating member; the upper supporting member includes a fourth sliding seat, a rubber-coated supporting plate, a second connecting column, a supporting plate fork block and a spring connecting column. Among them, the fourth sliding seat is slidably connected to the third slide rail; the rubber-coated supporting plate is arranged on the fourth sliding seat and is fixedly connected to the fourth sliding seat through the second connecting column. The outer end of the rubber-coated supporting plate extends obliquely upward to form a lifting plane; the spring connecting column is vertically arranged on the fourth sliding seat and extends upward through the bearing platform; the lower end of the connecting spring is connected to the spring connecting column; the supporting plate fork block is arranged at the bottom of the fourth sliding seat for receiving an external acting force.

[0015] A battery cell production line including a battery cell adaptive flexible clamping fixture.

[0016] The beneficial effects of the present invention are as follows: In view of the defects and deficiencies existing in the prior art, the present invention independently researches, develops and designs a battery cell adaptive flexible clamping fixture and its battery cell production line, which can realize automatic loading and clamping of battery cells, has a multi-level adaptive upward pressing and lifting flexible clamping function, effectively reduces the extrusion deformation of the battery cells during the clamping process, realizes synchronous linkage clamping of the battery cell body and the tabs, and realizes automatic bending of the tabs during the clamping process.

[0017] The present invention aims to provide a clamping fixture in the automatic production line of battery cells in the field of new energy batteries. Its function is to achieve adaptive clamping and fixing of battery cells and their tabs during the automatic assembly process, and simultaneously perform bending and shaping of the tabs during the clamping process. Specifically, the present invention as a whole includes a support assembly, a transfer connection assembly, a flexible pressing assembly, and a flexible lifting assembly. The support assembly as a whole includes a lower bearing member and an upper connecting member. The function of the bearing member is to bear, and it is slidably embedded on the linear slide rail of the automatic production line of battery cells. Driven by the conveyor belt or other power mechanisms on the linear slide rail, it moves linearly along the linear slide rail, so that the battery cells move successively between multiple processing stations on the side of the linear slide rail; the bearing member uses a base as the support structure and is slidably connected to the linear slide rail of the battery cell production line through the linear rail slider provided under the base. During the sliding process, positioning is performed through the positioning fork block provided under the base and protruding downward; blocking and limiting are performed through the anti-collision block made of flexible material provided on the side of the base; the connecting member uses the T-shaped frame provided on the base as the main structure, and a first connecting block is provided on one side wall of the T-shaped frame; the transfer connection assembly of the present invention includes a transfer connecting member, a battery cell pressing transfer member, and a tab pressing transfer member. The transfer connecting member is slidably connected to the T-shaped frame along the vertical direction through the first connecting block, and the connection between the transfer connecting member and the T-shaped frame forms a first-level flexible movable connection; at the same time, a battery cell pressing transfer member and a tab pressing transfer member are respectively movably connected to one side of the transfer connecting member. A second-level flexible movable connection is formed between the battery cell pressing transfer member and the transfer connecting member, and a third-level flexible movable connection is formed between the tab pressing transfer member and the transfer connecting member. At the same time, since the battery cell pressing transfer member and the tab pressing transfer member are respectively independently connected to the transfer connecting member, and the tab pressing transfer member moves freely within the battery cell pressing transfer member to avoid mutual movement interference between the two; at the same time, the flexible pressing assembly of the present invention includes a battery cell pressing member and a tab pressing member. The battery cell pressing member is connected to the above-mentioned battery cell pressing transfer member and moves with it. The tab pressing member is connected to the above-mentioned tab pressing transfer member and moves with it, achieving independent adaptive flexible pressing of the battery cell body and the tab from above respectively; in addition, the flexible lifting assembly of the present invention includes a lower bearing member, a bearing platform, and a lifting member. The lower bearing member is provided on the bearing member of the support assembly. The bearing platform is fixedly provided on the transfer connecting member and is used to place and bear the battery cell; the lifting member is slidably connected to the transfer connecting member, and the bottom plate of the lifting member is flexibly connected to the support assembly through the lower bearing member. The top of the lifting member is flexibly connected to the above-mentioned tab pressing member through a connecting spring. The connection method of the lifting member realizes a fourth-level flexible movable connection; the present invention realizes flexible bearing and support of the battery cell and its tab, flexible clamping and fixing of the battery cell body, and flexible clamping and fixing of the tab through the above four-level flexible movable connection.Specifically, in the present invention, the battery cell is first supported by a bearing platform. Since the bearing platform is connected to a transfer connecting member, the transfer connecting member is movably arranged in the vertical direction, and a first spring disposed at its bottom on a T-shaped frame provides elastic buffering. Through the first-stage flexible movable connection between the transfer connecting member and the T-shaped frame, the bearing and support of the battery cell by the bearing platform are flexible supports, which can effectively avoid the extrusion deformation of the battery cell caused by collision during the linear movement of the battery cell. Secondly, the battery cell pressing member for pressing down the battery cell body is connected to a battery cell pressing transfer member, and the second-stage flexible movable connection formed between the battery cell pressing transfer member and the transfer connecting member realizes the flexible contact with the surface of the battery cell body during the process of pressing down the battery cell body. Thirdly, the tab pressing member of the present invention is connected to a tab pressing transfer member, and the third-stage flexible movable connection between the tab pressing transfer member and the transfer connecting member and the fourth-stage flexible movable connection between the upper supporting member and the transfer connecting member realize the flexible pressing down and flexible upper supporting of the tabs on the bearing platform. Further, in the natural state, the flexible bearing of the battery cell, the flexible pressing of the battery cell body, and the upper supporting and pressing down of the tabs of the present invention are respectively maintained by elastic forces, that is, the above-mentioned self-adaptive clamping of the battery cell body and its tabs can be realized without external force. Since the present invention needs to drive the battery cell to move between various stations on the automated production line, therefore, the self-adaptive clamping is adopted, which reduces the power consumption of clamping while avoiding the problem of inconvenient movement of the wires of the power mechanism. When the present invention drives the battery cell to move to different assembly stations, if it is necessary to loosen the battery cell, the power mechanism provided at the assembly station acts on the battery cell pressing transfer member and pushes it upward, then the battery cell pressing member can be driven to move upward to loosen the battery cell; if it is necessary to loosen the tabs, the power mechanism provided at the assembly station acts on the tab pressing transfer member and the upper supporting member respectively and pushes the two to move upward and downward respectively, then the tabs can be loosened. Further, the tab pressing member and the upper supporting member of the present invention are respectively located on the upper and lower sides of the battery cell tab. While being respectively movably connected to the transfer connecting member, the two are also connected by a vertically arranged connecting spring. In the natural state, the elastic force of the connecting spring has a tendency to pull the two towards the middle respectively, so as to maintain the state of pressing the middle tab, and the elastic force of the connecting spring causes the tab pressing member to bend the tab extending horizontally along the upper surface of the battery cell body by 90° against the vertical end surface outside the battery cell body while pressing the tab, completing the tab bending and shaping action while realizing the tab pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is one of the schematic diagrams of the disassembled structure of the components of the present invention.

[0019] Figure 2 is Figure 1 the enlarged structure schematic diagram at I in

[0020] Figure 3 It is the second schematic diagram of the component splitting structure of the present invention.

[0021] Figure 4 It is the three-dimensional structure schematic diagram of the present invention.

[0022] Figure 5 It is the first three-dimensional structure schematic diagram of the present invention after hiding the second sliding seat and the bearing platform.

[0023] Figure 6 It is the second three-dimensional structure schematic diagram of the present invention after hiding the second sliding seat and the bearing platform.

[0024] Figure 7 It is the first schematic diagram of the component structures of the support component, the transfer connection component and the flexible upper support component of the present invention.

[0025] Figure 8 It is the second schematic diagram of the component structures of the support component, the transfer connection component and the flexible upper support component of the present invention.

[0026] Figure 9 It is the schematic diagram of the component structure of the transfer connection component of the present invention.

[0027] Figure 10 It is the schematic diagram of the component structures of the transfer connection component, the flexible downward pressing component and the flexible upper support component of the present invention.

[0028] Figure 11 It is the first schematic diagram of the component structure of the flexible downward pressing component of the present invention.

[0029] Figure 12 It is the second schematic diagram of the component structure of the flexible downward pressing component of the present invention.

[0030] Figure 13 It is the first schematic diagram of the component structure of the flexible upper support component of the present invention.

[0031] Figure 14 It is the second schematic diagram of the component structure of the flexible upper support component of the present invention.

[0032] In the figure: 1. Support component; 2. Transfer connection component; 3. Flexible downward pressing component; 4. Flexible upper support component; 0. Battery cell; 01. Battery cell body; 02. Tab; 11. Base; 12. Linear rail slider; 13. Positioning fork block; 14. Anti-collision block; 15. T-shaped frame; 16. First connection block; 17. First spring; A. Linear rail groove; 21. First sliding seat; 22. First sliding rail; 23. Second sliding rail; 24. Extension support block; 25. Third sliding rail; 26. Second sliding seat; 27. Second connecting block; 28. Second spring; 29. Third sliding seat; 210. Third connecting block; 211. Connecting spring; B. Extension guide bar; C. Limit sliding groove; D. Installation sliding groove; 31. Connecting seat; 32. Battery cell pressing block; 33. Support seat; 34. Tab pressing block; 35. First connecting column; 36. Limit column; 41. Fourth sliding seat; 42. Carrying platform; 43. Rubber-coated support plate; 44. Second connecting column; 45. Support plate fork block; 46. Third spring; 47. Spring connecting column. Detailed implementation manner

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Such as Figures 1 to 6As shown in the figure, the present invention provides a cell self-adaptive flexible clamping fixture for clamping a cell and driving the cell to linearly slide on a linear rail. The fixture includes a support assembly 1, a transfer connection assembly 2, a flexible pressing assembly 3, and a flexible supporting assembly 4. Among them, the support assembly 1 includes a carrier and a connecting member. The carrier is slidably embedded in the linear rail of the cell automatic production line and linearly moves along the direction of the linear rail under the drive of an external power source. The connecting member is arranged on the carrier. The transfer connection assembly 2 includes a transfer connecting member, a cell pressing transfer member, and an ear pressing transfer member. The transfer connecting member is arranged on one side of the connecting member and is slidably connected to the connecting member in the vertical direction. The cell pressing transfer member is slidably connected to one side of the transfer connecting member in the vertical direction and maintains a downward pressing state through a downward elastic force. The ear pressing transfer member is slidably arranged on the cell pressing transfer member in the vertical direction. The flexible pressing assembly 3 includes a cell pressing member and an ear pressing member. The cell pressing member is connected to the cell pressing transfer member and moves with the cell pressing transfer member to maintain a state of downwardly pressing the cell for pressing the cell body 01. The ear pressing member is connected to the ear pressing transfer member and moves with the ear pressing transfer member for pressing the ear 02. The flexible supporting assembly 4 includes a lower carrier, a carrying platform 42, and a supporting member. The lower carrier is flexibly connected to the carrier of the support assembly 1. The carrying platform 42 is horizontally and fixedly connected to the side of the transfer connecting member for carrying the cell 0. The supporting member is slidably connected to the transfer connecting member in the vertical direction. The lower part of the supporting member is connected to the lower carrier, and the upper part of the supporting member is flexibly connected to the ear pressing member for supporting the ear 02.

[0037] As Figure 1 shown, as an embodiment of the present invention, the carrier of the present invention includes a base 11, a linear rail slider 12, a positioning fork block 13, and a collision prevention block 14. Among them, the base 11 is horizontally arranged. The linear rail slider 12 is arranged at the bottom of the base 11. A linear rail groove A is provided inside the linear rail slider 12 for slidably nesting on the linear rail. The positioning fork block 13 is arranged at the lower part of the base 11 for positioning during linear sliding. The collision prevention block 14 is arranged at the side of the base 11 and extends horizontally. The collision prevention block 14 is made of a flexible material for blocking and limiting during sliding. A support platform extending horizontally outward is provided on one side of the base 11.

[0038] As Figure 1 shown, as an embodiment of the present invention, the connecting member of the present invention includes a T-shaped frame 15, a first connecting block 16, and a first spring 17. Among them, the T-shaped frame 15 is arranged on the base 11 and extends in the vertical direction. The first connecting block 16 is fixed on the side wall of the T-shaped frame 15. The first spring 17 is vertically arranged, and the bottom of the first spring 17 is connected to the base 11.

[0039] As Figures 1 to 3 shown, as an embodiment of the present invention, the transfer connecting member of the present invention includes a first sliding seat 21, a first sliding rail 22, a second sliding rail 23, an extending support block 24 and a third sliding rail 25. Among them, the first sliding seat 21 is vertically arranged on the side of the T-shaped frame 15. A first sliding rail 22 is vertically arranged on a side wall of the first sliding seat 21 close to the T-shaped frame 15. The first sliding rail 22 is slidably inserted into the first connecting block 16, so that the first sliding seat 21 and the T-shaped frame 15 are slidably connected in the vertical direction; the lower part of the first sliding seat 21 is connected to the top of the first spring 17 to provide elastic buffering through the first spring 17; the second sliding rail 23 and the third sliding rail 25 are respectively arranged on the other side wall of the first sliding seat 21 and respectively extend in the vertical direction; the extending support block 24 is arranged on the other side wall of the first sliding seat 21 and extends horizontally outwards; an extending guide bar B extending vertically downwards is arranged at the bottom of the first sliding seat 21, and the extending guide bar B is slidably inserted into the base 11 for guiding and limiting during the vertical sliding process.

[0040] As Figures 4 to 9 shown, as an embodiment of the present invention, the battery cell pressing transfer member of the present invention includes a second sliding seat 26, a second connecting block 27 and a second spring 28. Among them, the second sliding seat 26 is vertically arranged on the side of the first sliding seat 21; the second connecting block 27 is fixed on the side wall of the second sliding seat 26 close to the first sliding seat 21 and is slidably connected to the second sliding rail 23; a vertically extending limiting sliding groove C is opened inside the second sliding seat 26; the extending support block 24 is horizontally inserted into the limiting sliding groove C; the second spring 28 is vertically arranged in the limiting sliding groove C, the top of the second spring 28 is connected to the extending support block 24, and the bottom abuts against the bottom of the limiting sliding groove C. In the natural state, the elastic force of the second spring 28 has a tendency to drive the second sliding seat 26 to move downwards; an installation sliding groove D is opened on the second sliding seat 26, and the installation sliding groove D penetrates through the side wall of the second sliding seat 26.

[0041] As Figures 1 to 9 shown, as an embodiment of the present invention, the tab pressing transfer member of the present invention includes a third sliding seat 29, a third connecting block 210 and a connecting spring 211. Among them, the third sliding seat 29 is arranged in the installation sliding groove D. A third connecting block 210 is fixed on the side wall of the third sliding seat 29 close to the second sliding seat 26. The third connecting block 210 is slidably embedded on the third sliding rail 25, so that the third sliding seat 29 is slidably connected to the first sliding seat 21 and can move freely in the installation sliding groove D; the connecting spring 211 is vertically arranged below the third sliding seat 29, and the top of the connecting spring 211 is connected to the bottom of the third sliding seat 29.

[0042] As Figures 10 to 12As shown in the figure, as an embodiment of the present invention, the cell pressing member of the present invention includes a connecting seat 31 and a cell pressing block 32. Among them, the connecting seat 31 is horizontally connected to the side wall of the second sliding seat 26; the cell pressing block 32 is arranged below the connecting seat 31, and the cell pressing block 32 moves downward with the second sliding seat 26 and the connecting seat 31 to press the cell body 01.

[0043] The tab pressing member includes a support seat 33, a tab pressing block 34, a first connecting column 35 and a limiting column 36. Among them, the support seat 33 is horizontally arranged on the side wall of the third sliding seat 29; the tab pressing block 34 is arranged on the support seat 33 and is fixedly connected through the first connecting column 35. The outer side of the tab pressing block 34 extends obliquely downward to the outside of the support seat 33 for pressing down the tab 02; at least two limiting columns 36 are vertically arranged on the support seat 33 and are used for downwardly abutting against the bearing platform 42 when pressing the tab to perform limit limiting.

[0044] As Figures 1 to 4 , Figures 13 to 14 shown in the figure, as an embodiment of the present invention, the lower bearing member of the present invention includes a third spring 46. The third spring 46 is vertically arranged on the support platform horizontally extending outward from the base 11; the bearing platform 42 is horizontally arranged on the side wall of the first sliding seat 21 and is located below the tab pressing and rotating member; the upper supporting member includes a fourth sliding seat 41, a rubber-coated supporting plate 43, a second connecting column 44, a supporting plate fork block 45 and a spring connecting column 47. Among them, the fourth sliding seat 41 is slidably connected to the third slide rail 25; the rubber-coated supporting plate 43 is arranged on the fourth sliding seat 41 and is fixedly connected to the fourth sliding seat 41 through the second connecting column 44. The outer end of the rubber-coated supporting plate 43 extends obliquely upward to form a lifting plane; the spring connecting column 47 is vertically arranged on the fourth sliding seat 41 and extends upward through the bearing platform 42; the lower end of the connecting spring 211 is connected to the spring connecting column 47; the supporting plate fork block 45 is arranged at the bottom of the fourth sliding seat 41 and is used for receiving external acting forces.

[0045] As an embodiment of the present invention, the present invention discloses a cell production line including a cell adaptive flexible clamping fixture.

[0046] Furthermore, the present invention designs a cell adaptive flexible clamping fixture and its cell production line that can realize automatic loading and clamping of cells, has a multi-level adaptive upper pressing and lifting flexible clamping function, effectively reduces the extrusion deformation of cells during the clamping process, realizes synchronous linkage clamping of the cell body and the tabs, and realizes automatic bending of the tabs during the clamping process.

[0047] The present invention aims to provide a clamping fixture in the automated production line of battery cells in the field of new energy batteries. Its function is to achieve adaptive clamping and fixing of battery cells and their tabs during the automated assembly process, and simultaneously perform bending and shaping of the tabs during the clamping process. Specifically, the present invention as a whole includes a support assembly, a transfer connection assembly, a flexible pressing assembly, and a flexible supporting assembly. The support assembly as a whole includes a carrier below and a connecting member above. The function of the carrier is to carry, and it is slidably embedded in the linear slide rail of the automated production line of battery cells. Driven by the conveyor belt or other power mechanisms on the linear slide rail, it moves linearly along the linear slide rail, so that the battery cells move successively between multiple processing stations on the side of the linear slide rail; the carrier uses the base as the support structure and is slidably connected to the linear slide rail of the battery cell production line through the linear guide slider arranged below the base. During the sliding process, positioning is performed through the positioning fork block arranged below the base and protruding downward; blocking and limiting are performed through the anti-collision block made of flexible material arranged on the side of the base; the connecting member uses the T-shaped frame arranged on the base as the main structure, and a first connecting block is arranged on one side wall of the T-shaped frame; the transfer connection assembly of the present invention includes a transfer connecting member, a battery cell pressing transfer member, and a tab pressing transfer member. The transfer connecting member is slidably connected to the T-shaped frame along the vertical direction through the first connecting block, and the connection between the transfer connecting member and the T-shaped frame forms a first-level flexible movable connection; at the same time, a battery cell pressing transfer member and a tab pressing transfer member are respectively movably connected to one side of the transfer connecting member. A second-level flexible movable connection is formed between the battery cell pressing transfer member and the transfer connecting member, and a third-level flexible movable connection is formed between the tab pressing transfer member and the transfer connecting member. At the same time, because the battery cell pressing transfer member and the tab pressing transfer member are respectively independently connected to the transfer connecting member, and the tab pressing transfer member can move freely within the battery cell pressing transfer member to avoid mutual movement interference between the two; at the same time, the flexible pressing assembly of the present invention includes a battery cell pressing member and a tab pressing member. The battery cell pressing member is connected to the above-mentioned battery cell pressing transfer member and moves with it. The tab pressing member is connected to the above-mentioned tab pressing transfer member and moves with it, realizing independent adaptive flexible pressing of the battery cell body and the tab from above respectively; in addition, the flexible supporting assembly of the present invention includes a lower carrier, a carrying platform, and a supporting member. The lower carrier is arranged on the carrier of the support assembly. The carrying platform is fixedly arranged on the transfer connecting member and is used to place and carry the battery cell; the supporting member is slidably connected to the transfer connecting member, and the bottom plate of the supporting member is flexibly connected to the support assembly through the lower carrier. The top of the supporting member is flexibly connected to the above-mentioned tab pressing member through a connecting spring. The connection method of the supporting member realizes a fourth-level flexible movable connection; through the above four-level flexible movable connection, the present invention simultaneously realizes flexible bearing and support of the battery cell and its tab, flexible clamping and fixing of the battery cell body, and flexible clamping and fixing of the tab.Specifically, the present invention first supports the battery cell through a bearing platform. Since the bearing platform is connected to a transfer connecting member, the transfer connecting member is movably arranged in the vertical direction, and a first spring provided at the bottom thereof on a T-shaped frame provides elastic buffering. Through the first-level flexible movable connection between the transfer connecting member and the T-shaped frame, the bearing and support of the battery cell by the bearing platform is a flexible support, which can effectively avoid the extrusion deformation of the battery cell caused by collision during the linear movement of the battery cell. Secondly, the battery cell pressing member for pressing down the battery cell body is connected to a battery cell pressing transfer member, and the second-level flexible movable connection formed between the battery cell pressing transfer member and the transfer connecting member realizes the flexible contact with the surface of the battery cell body during the process of pressing down the battery cell body. Thirdly, the tab pressing member of the present invention is connected to a tab pressing transfer member, and the third-level flexible movable connection between the tab pressing transfer member and the transfer connecting member and the fourth-level flexible movable connection between the upper supporting member and the transfer connecting member realize the flexible pressing down and flexible upward supporting of the tabs on the bearing platform. Further, in the natural state, the flexible bearing of the battery cell, the flexible pressing of the battery cell body, and the upward supporting and downward pressing of the tabs of the present invention are respectively maintained by elastic forces, that is, the self-adaptive clamping of the battery cell body and its tabs can be realized without external force. Since the present invention needs to drive the battery cell to move between various stations on the automated production line, therefore, the self-adaptive clamping is adopted, which reduces the power consumption of clamping while avoiding the problem of inconvenient movement of the wires of the power mechanism. When the present invention drives the battery cell to move to different assembly stations, if it is necessary to loosen the battery cell, the power mechanism provided at the assembly station acts on the battery cell pressing transfer member and pushes it upward, then the battery cell pressing member can be driven to move upward to loosen the battery cell; if it is necessary to loosen the tabs, the power mechanism provided at the assembly station acts on the tab pressing transfer member and the upper supporting member respectively and pushes the two to move upward and downward respectively, then the tabs can be loosened. Further, the tab pressing member and the upper supporting member of the present invention are respectively located on the upper and lower sides of the battery cell tab. While being respectively movably connected to the transfer connecting member, they are also connected by a vertically arranged connecting spring. In the natural state, the elastic force of the connecting spring has a tendency to pull the two towards the middle respectively, so as to maintain the state of pressing the tab in the middle, and the elastic force of the connecting spring causes the tab pressing member to bend the tab extending horizontally along the upper surface of the battery cell body by 90° against the vertical end surface outside the battery cell body while pressing the tab, completing the tab bending and shaping action while realizing the tab pressing.

[0048] The embodiments of the present invention only introduce its specific implementation manners and do not limit its protection scope. Those skilled in the art of this industry can make some modifications inspired by this embodiment. Therefore, all equivalent changes or modifications made in accordance with the scope of this invention patent belong to the scope of the claims of this invention patent.

Claims

1. A cell adaptive flexible clamping fixture, used to clamp the cell and drive the cell to slide linearly on the rail, characterized in that: It comprises a supporting component (1), a transfer connection component (2), a flexible pressing component (3) and a flexible lifting component (4), wherein: The support assembly (1) comprises a bearing member and a connecting member, wherein the bearing member is slidably embedded in a linear slide rail of an automatic production line for battery cells and moves linearly along the linear slide rail under the drive of an external power source; the connecting member is arranged on the bearing member; The transfer connection assembly (2) comprises a transfer connection piece, a cell pressing transfer piece and a tab pressing transfer piece, wherein the transfer connection piece is arranged on one side of the connection piece and is slidably connected to the connection piece in a vertical direction; the cell pressing transfer piece is slidably connected to one side of the transfer connection piece in a vertical direction and is maintained in a downwardly pressed state by a downward elastic force; the tab pressing transfer piece is slidably arranged on the cell pressing transfer piece in a vertical direction; The flexible pressing component (3) comprises a cell pressing member and a tab pressing member, wherein the cell pressing member is connected to the cell pressing intermediate member and moves with the cell pressing intermediate member to maintain a state of pressing the cell downwards, and is used to press down the cell body (01); the tab pressing member is connected to the tab pressing intermediate member and moves with the tab pressing intermediate member, and is used to press down the tab (02); The flexible upper supporting component (4) comprises a lower supporting member, a supporting platform (42) and an upper supporting member, wherein the lower supporting member is flexibly connected to the supporting member of the supporting component (1); the supporting platform (42) is horizontally and fixedly connected to the side of the transfer connecting member for supporting the battery cell (0); the upper supporting member is slidably connected to the transfer connecting member in a vertical direction, the lower part of the upper supporting member is connected to the lower supporting member, and the upper part of the upper supporting member is flexibly connected to the tab pressing member for supporting the tab (02).

2. The cell adaptive flexible clamping fixture according to claim 1, characterized in that: The bearing member comprises a base (11), a linear rail slider (12), a positioning fork block (13) and an anti-collision block (14), wherein the base (11) is arranged horizontally; the linear rail slider (12) is arranged at the bottom of the base (11), and a linear rail groove (A) is provided in the linear rail slider (12) for slidably nesting on the linear rail; the positioning fork block (13) is arranged at the lower part of the base (11) for positioning during linear sliding; the anti-collision block (14) is arranged at the side of the base (11) and extends horizontally, the anti-collision block (14) is made of a flexible material and is used for blocking and limiting during sliding; a support platform extending horizontally outward is provided on one side of the base (11).

3. The cell adaptive flexible clamping fixture according to claim 2, characterized in that: The connecting member comprises a T-shaped frame (15), a first connecting block (16) and a first spring (17), wherein the T-shaped frame (15) is arranged on a base (11) and extends in a vertical direction; the first connecting block (16) is fixed on a side wall of the T-shaped frame (15); and the first spring (17) is arranged vertically, and the bottom of the first spring (17) is connected to the base (11).

4. The cell adaptive flexible clamping fixture according to claim 3, characterized in that: The transfer connection member comprises a first slide seat (21), a first slide rail (22), a second slide rail (23), an extension support block (24) and a third slide rail (25), wherein the first slide seat (21) is vertically arranged on the side of the T-shaped frame (15), a first slide rail (22) is vertically arranged on a side wall of the first slide seat (21) close to the T-shaped frame (15), and the first slide rail (22) is slidably embedded in the first connection block (16), so that the first slide seat (21) and the T-shaped frame (15) are slidably connected in the vertical direction; the lower part of the first slide seat (21) The first slide seat (21) is connected to the top of the first spring (17), and elastic buffering is provided by the first spring (17); the second slide rail (23) and the third slide rail (25) are respectively arranged on the other side wall of the first slide seat (21), and respectively extend in the vertical direction; the extension support block (24) is arranged on the other side wall of the first slide seat (21), and extends horizontally outward; the bottom of the first slide seat (21) is provided with an extension guide bar (B) extending vertically downward, and the extension guide bar (B) can be slidably inserted into the base (11) so as to guide and limit during the vertical sliding process.

5. The cell adaptive flexible clamping fixture according to claim 4, characterized in that: The cell pressing transfer member comprises a second slide seat (26), a second connecting block (27) and a second spring (28), wherein the second slide seat (26) is vertically arranged on the side of the first slide seat (21); the second connecting block (27) is fixed to the side wall of the second slide seat (26) close to the first slide seat (21) and is slidably connected to the second slide rail (23); a vertically extending limiting slide groove (C) is provided inside the second slide seat (26); the extending support block ( 24) is horizontally embedded in the limiting slide groove (C); the second spring (28) is vertically arranged in the limiting slide groove (C), the top of the second spring (28) is connected to the extension support block (24), and the bottom is against the bottom of the limiting slide groove (C). In a natural state, the elastic force of the second spring (28) tends to drive the second slide seat (26) to move downward; the second slide seat (26) is provided with an installation slide groove (D) on the top, and the installation slide groove (D) passes through the side wall of the second slide seat (26).

6. The cell adaptive flexible clamping fixture according to claim 5, characterized in that: The tab pressing transfer member comprises a third slide (29), a third connecting block (210) and a connecting spring (211), wherein the third slide (29) is arranged in an installation slot (D), a third connecting block (210) is fixed on a side wall of the third slide (29) close to the second slide (26), and the third connecting block (210) is slidably embedded in a third slide rail (25), so that the third slide (29) can be slidably connected to the first slide (21) and can move freely in the installation slot (D); the connecting spring (211) is vertically arranged below the third slide (29), and the top of the connecting spring (211) is connected to the bottom of the third slide (29).

7. The cell adaptive flexible clamping fixture according to claim 5, characterized in that: The battery cell pressing member comprises a connecting seat (31) and a battery cell pressing block (32), wherein the connecting seat (31) is horizontally connected to the side wall of the second slide seat (26); the battery cell pressing block (32) is arranged at the bottom of the connecting seat (31), and the battery cell pressing block (32) moves downward with the second slide seat (26) and the connecting seat (31) to press the battery cell body (01).

8. The cell adaptive flexible clamping fixture according to claim 6, characterized in that: The tab pressing member comprises a support seat (33), a tab pressing block (34), a first connecting column (35) and a limiting column (36), wherein the support seat (33) is horizontally arranged on the side wall of the third slide seat (29); the tab pressing block (34) is arranged on the support seat (33) and is connected and fixed by the first connecting column (35), and the outer side of the tab pressing block (34) extends obliquely downward to the outer side of the support seat (33) for pressing the tab (02); the limiting column (36) comprises at least two, and at least two limiting columns (36) are vertically arranged on the support seat (33) for pressing the tab downward against the bearing platform (42) when pressing the tab, so as to perform extreme limiting.

9. The cell adaptive flexible clamping fixture according to claim 6, characterized in that: The lower bearing member comprises a third spring (46), and the third spring (46) is vertically arranged on a support platform extending horizontally outward from the base (11); The bearing platform (42) is horizontally arranged on the side wall of the first slide seat (21) and is located below the tab pressing transfer member; The upper supporting member comprises a fourth slide seat (41), a rubber-coated supporting plate (43), a second connecting column (44), a supporting plate fork block (45) and a spring connecting column (47), wherein the fourth slide seat (41) is slidably connected to the third slide rail (25); the rubber-coated supporting plate (43) is arranged on the fourth slide seat (41) and is connected and fixed to the fourth slide seat (41) through the second connecting column (44), and the outer end of the rubber-coated supporting plate (43) extends upward at an angle to form a lifting plane; the spring connecting column (47) is vertically arranged on the fourth slide seat (41) and extends upward through the bearing platform (42); the lower end of the connecting spring (211) is connected to the spring connecting column (47); the supporting plate fork block (45) is arranged at the bottom of the fourth slide seat (41) for receiving external forces.

10. A battery cell production line comprising the battery cell adaptive flexible clamping fixture according to claim 1.

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