An adaptive flexible clamping fixture for battery cells and its battery cell production line

Abstract

The present invention discloses a cell self-adaptive flexible clamping fixture and its cell production line, which includes a support assembly, a transfer connection assembly, a flexible pressing-down assembly, and a flexible lifting-up assembly. The support assembly includes a carrier and a connecting piece, and the carrier is slidably embedded on the linear slide rail of the cell automatic production line; the connecting piece is arranged on the carrier; the transfer connection assembly includes a transfer connecting piece, a cell pressing-down transfer piece, and an ear pressing-down transfer piece; the flexible pressing-down assembly includes a cell pressing-down piece and an ear pressing-down piece; the flexible lifting-up assembly includes a lower carrier, a carrying platform, and a lifting-up piece. The present invention realizes the automatic loading and clamping of cells, and has a multi-level self-adaptive upward pressing and lifting flexible clamping function, effectively reducing the extrusion deformation of cells during the clamping process, realizing the synchronous linkage clamping of the cell body and the ears, and realizing the automatic bending of the ears during the clamping process.

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 constitute 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-shaped 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 and manufacturing 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 needs to be designed in the battery cell automated manufacturing production line to clamp the battery cells and drive the battery cells to be transferred between different manufacturing stations. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and to provide a battery cell adaptive flexible clamping fixture that can realize automatic loading and clamping of battery cells and has a multi-level adaptive upper pressure and lifting flexible clamping function, effectively reducing the extrusion deformation of the battery cells during the clamping process, realizing the synchronous linkage clamping of the battery cell body and the tabs, and realizing automatic bending of the tabs during the clamping process, and a battery cell adaptive flexible clamping fixture and a battery cell production line.

[0006] The technical solution adopted by the present invention is as follows: A core self-adaptive flexible clamping fixture is used to clamp the core and drive the core to linearly slide on the 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. The carrier is slidably embedded in the linear slide rail of the core 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 core pressing transfer piece, and an ear pressing transfer piece. 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 core pressing transfer piece is slidably connected to one side of the transfer connecting piece in the vertical direction and maintains a pressing-down state through downward elastic force. The ear pressing transfer piece is slidably arranged on the core pressing transfer piece in the vertical direction. The flexible pressing-down assembly includes a core pressing piece and an ear pressing piece. The core pressing piece is connected to the core pressing transfer piece and moves with the core pressing transfer piece to maintain a state of pressing down the core, for pressing down the core body. The ear pressing piece is connected to the ear pressing transfer piece and moves with the ear pressing transfer piece, for pressing down the ears. The flexible lifting assembly includes a lower carrier, a bearing platform, and a lifting piece. The lower carrier is flexibly connected to the carrier of the support assembly. The bearing platform is horizontally and fixedly connected to the side of the transfer connecting piece, for bearing the core. 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, for lifting the ears.

[0007] Preferably, the carrier includes a base, a linear rail slider, a positioning fork block, and an anti-collision block. The base is horizontally arranged. The linear rail slider is arranged at the bottom of the base. A linear rail groove is provided inside 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 the linear sliding process. The anti-collision block is arranged at the side of the base and extends horizontally. The anti-collision block is made of a flexible material for blocking and limiting during the sliding process. 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. 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 member 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 provided 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 along the vertical direction 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 provided at the bottom of the first sliding seat, and the extending guide bar is slidably inserted into the base to guide and limit the position during the vertical sliding process.

[0010] Preferably, the battery cell pressing transfer member 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 opened 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 opened 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 member 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 member 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 below 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 abutting against the bearing platform when pressing the tab so as to perform ultimate limiting.

[0014] Preferably, the lower bearing member includes a third spring, and 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 transferring 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 sliding 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:

[0017] 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 bearing and clamping of battery cells, has a multi-stage adaptive upward pressing and lifting flexible clamping function, effectively reduces the extrusion deformation of battery cells during the clamping process, realizes synchronous linkage clamping of the battery cell body and tabs, and realizes automatic bending of tabs during the clamping process.

[0018] 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 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 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 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 provided below the base. During the sliding process, positioning is performed through the positioning fork block provided below 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, 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 lifting assembly of the present invention includes a lower carrier, a carrying platform, and a lifting 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 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 carrier. 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; 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, 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 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 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-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 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 workstations 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 workstations, if it is necessary to release the battery cell, the power mechanism provided at the assembly workstation 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 release the battery cell; if it is necessary to release the tabs, the power mechanism provided at the assembly workstation acts on the tab pressing transfer member and the upper supporting member respectively and pushes them to move upward and downward respectively, then the tabs can be released. 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 they are 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 middle tab, and the elastic force of the connecting spring makes the tab pressing member 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

[0019] Figure 1 It is one of the schematic diagrams of the disassembled structure of the components of the present invention.

[0020] Figure 2 is Figure 1 The enlarged schematic diagram at I in.

[0021] Figure 3 It is the second schematic diagram of the component splitting structure of the present invention.

[0022] Figure 4 It is the three-dimensional structure schematic diagram of the present invention.

[0023] Figure 5 It is the first three-dimensional structure schematic diagram of the present invention after hiding the second sliding seat and the carrying platform.

[0024] Figure 6 It is the second three-dimensional structure schematic diagram of the present invention after hiding the second sliding seat and the carrying platform.

[0025] Figure 7 It is the first schematic diagram of the component structures of the support assembly, the transfer connection assembly and the flexible upper support assembly of the present invention.

[0026] Figure 8 It is the second schematic diagram of the component structures of the support assembly, the transfer connection assembly and the flexible upper support assembly of the present invention.

[0027] Figure 9 It is the schematic diagram of the component structure of the transfer connection assembly of the present invention.

[0028] Figure 10 It is the schematic diagram of the component structures of the transfer connection assembly, the flexible downward pressing assembly and the flexible upper support assembly of the present invention.

[0029] Figure 11 It is the first schematic diagram of the component structure of the flexible downward pressing assembly of the present invention.

[0030] Figure 12 It is the second schematic diagram of the component structure of the flexible downward pressing assembly of the present invention.

[0031] Figure 13 It is the first schematic diagram of the component structure of the flexible upper support assembly of the present invention.

[0032] Figure 14 It is the second schematic diagram of the component structure of the flexible upper support assembly of the present invention.

[0033] In the figure:

[0034] 1. Support assembly; 2. Transfer connection assembly; 3. Flexible downward pressing assembly; 4. Flexible upper support assembly; 0. Battery cell;

[0035] 01. Battery cell body; 02. Tab;

[0036] 11. Base; 12. Linear rail slider; 13. Positioning fork block; 14. Anti-collision block; 15. T-shaped frame; 16. First connecting block; 17. First spring; A. Linear rail groove;

[0037] 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;

[0038] 31. Connecting seat; 32. Battery cell pressing block; 33. Support seat; 34. Tab pressing block; 35. First connecting column; 36. Limit column;

[0039] 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

[0040] 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.

[0041] 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 indication will also change accordingly.

[0042] 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 internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. 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.

[0043] Such as Figures 1 to 6As shown in the figure, the present invention provides a core self - adaptive flexible clamping fixture for clamping a core and driving the core to linearly slide on a linear track, which includes a support assembly 1, a transfer connection assembly 2, a flexible pressing - down assembly 3, and a flexible supporting - up assembly 4. Among them, the support assembly 1 includes a carrier and a connecting piece. The carrier is slidably embedded in the linear slide rail of the core 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 2 includes a transfer connecting piece, a core pressing transfer piece, and an ear pressing transfer piece. The transfer connecting piece is arranged on one side of the connecting piece and is slidably connected to the connecting piece along the vertical direction. The core pressing transfer piece is slidably connected to one side of the transfer connecting piece along the vertical direction and maintains a downward pressing state through downward elastic force. The ear pressing transfer piece is slidably arranged on the core pressing transfer piece along the vertical direction. The flexible pressing - down assembly 3 includes a core pressing piece and an ear pressing piece. The core pressing piece is connected to the core pressing transfer piece and moves with the core pressing transfer piece to maintain a state of pressing down the core, for pressing down the core body 01. The ear pressing piece is connected to the ear pressing transfer piece and moves with the ear pressing transfer piece, for pressing down the ear 02. The flexible supporting - up assembly 4 includes a lower carrier, a carrying platform 42, and a supporting - up piece. 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 piece for carrying the core 0. The supporting - up piece is slidably connected to the transfer connecting piece along the vertical direction. The lower part of the supporting - up piece is connected to the lower carrier, and the upper part of the supporting - up piece is flexibly connected to the ear pressing piece, for supporting up the ear 02.

[0044] 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 - proof 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 slide rail. The positioning fork block 13 is arranged at the lower part of the base 11 for positioning during linear sliding. The collision - proof block 14 is arranged at the side of the base 11 and extends horizontally. The collision - proof 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.

[0045] As Figure 1 shown, as an embodiment of the present invention, the connecting piece 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 along 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.

[0046] 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 extend respectively 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.

[0047] 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 a 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 formed 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 formed on the second sliding seat 26, and the installation sliding groove D penetrates through the side wall of the second sliding seat 26.

[0048] 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 a 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.

[0049] As Figures 10 to 12As shown, 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.

[0050] 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 the tab 02 downward; at least two limiting columns 36 are vertically arranged on the support seat 33 for downwardly abutting against the bearing platform 42 when pressing the tab to perform limit limiting.

[0051] As Figures 1 to 4 , Figures 13 to 14 shown, 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 supporting 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 for receiving an external acting force.

[0052] As an embodiment of the present invention, the present invention discloses a cell production line including a cell adaptive flexible clamping jig.

[0053] Furthermore, the present invention designs a cell adaptive flexible clamping jig and its cell production line that can realize automatic bearing and clamping of the cell, has a multi-level adaptive upper pressing and lifting flexible clamping function, effectively reduces the extrusion deformation of the cell during the clamping process, realizes synchronous linkage clamping of the cell body and the tab, and realizes automatic bending of the tab during the clamping process.

[0054] The present invention aims to provide a clamping jig for use in an automated production line of battery cells in the field of new energy batteries, which belongs to an automated production line of battery cells, and its function is to realize the adaptive clamping and fixing of battery cells and their tabs during the automated assembly process, and to realize the bending and shaping of the tabs simultaneously during the clamping process. Specifically, the present invention as a whole includes a support assembly, a transfer connection assembly, a flexible downward pressing assembly, and a flexible upward supporting assembly. The support assembly as a whole includes a lower bearing member and an upper connecting member. The bearing member functions to bear and is slidably embedded in the linear slide rail of the automated production line of battery cells, and moves linearly along the linear slide rail under the drive of the transmission belt of the linear slide rail or other power mechanism, 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 a supporting structure, and is slidably connected to the linear slide rail of the battery cell production line through a linear rail slider provided below the base, and during the sliding process, it is provided below the base and protrudes downward. The positioning fork block is used for positioning; the anti-collision block of flexible material arranged on the side of the base is used for blocking and limiting; the connecting piece uses a T-shaped frame arranged 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 connection piece, a battery cell pressing transfer piece and a tab pressing transfer piece, and the transfer connection piece is slidably connected to the T-shaped frame in the vertical direction through the first connecting block, and the connection between the transfer connection piece and the T-shaped frame forms a first-level flexible movable connection; at the same time, one side of the transfer connection piece is movably connected to the battery cell pressing transfer piece and the tab pressing transfer piece, and a second level is formed between the battery cell pressing transfer piece and the transfer connection piece. The third level of flexible active connection is formed between the tab pressing transfer piece and the transfer connecting piece. At the same time, since the battery cell pressing transfer piece and the tab pressing transfer piece are independently connected to the transfer connecting piece, and the tab pressing transfer piece can freely move in the battery cell pressing transfer piece to avoid mutual movement interference between the two. At the same time, the flexible pressing component of the present invention includes a battery cell pressing piece and a tab pressing piece. The battery cell pressing piece is connected to the above-mentioned battery cell pressing transfer piece and moves with it. The tab pressing piece is connected to the above-mentioned tab pressing transfer piece and moves with it, thereby realizing independent adaptive flexible pressing of the battery cell body and the tab from above. In addition The flexible upper supporting assembly of the present invention includes a lower supporting member, a supporting platform and an upper supporting member. The lower supporting member is arranged on the supporting member of the supporting assembly, and the supporting platform is fixedly arranged on the transfer connecting member for placing and supporting the battery cell; the upper supporting member is slidably connected to the transfer connecting member, and the bottom plate of the upper supporting member is flexibly connected to the supporting assembly through the lower supporting member, and the top of the upper supporting member is flexibly connected to the above-mentioned tab pressing member through a connecting spring. The connection method of the upper supporting member realizes a fourth-level flexible active connection; the present invention realizes flexible bearing support for the battery cell and its tab, flexible clamping and fixation of the battery cell body, and flexible clamping and fixation of the tab through the above-mentioned four-level flexible active 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 provided at the bottom thereof 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 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-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 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 in 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 clamping power consumption and avoids 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 to drive the battery cell pressing member 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 to loosen the tabs. 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.

[0055] The embodiments of the present invention only introduce its specific implementation manners and do not limit its protection scope. Those skilled in the art can make certain modifications inspired by this embodiment. Therefore, all equivalent changes or modifications made according to the scope of the present invention patent fall within the scope of the claims of the present invention patent.

Claims

1. An adaptive flexible clamping fixture for battery cells, which is used to clamp battery cells and drive the battery cells to slide linearly on a linear guide rail, and is characterized in that: It includes a support component (1), a transfer connection component (2), a flexible pressing-down component (3) and a flexible lifting component (4). Among them, the support component (1) includes a carrier and a connecting piece. Among them, the carrier is slidably embedded in the linear slide rail of the battery cell automatic production line and moves linearly 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 component (2) includes a transfer connecting piece, a battery cell pressing transfer piece and an electrode tab 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 along the vertical direction; the battery cell pressing transfer piece is slidably connected to one side of the transfer connecting piece along the vertical direction and maintains a pressing-down state through a downward elastic force; the electrode tab pressing transfer piece is slidably arranged on the battery cell pressing transfer piece along the vertical direction; the flexible pressing-down component (3) includes a battery cell pressing piece and an electrode tab pressing piece. Among them, the battery cell pressing piece is connected to the battery cell pressing transfer piece and moves with the battery cell pressing transfer piece to maintain a state of pressing down the battery cell body (01) for pressing down the battery cell body (01); the electrode tab pressing piece is connected to the electrode tab pressing transfer piece and moves with the electrode tab pressing transfer piece for pressing down the electrode tab (02); the flexible lifting component (4) includes a lower carrier, a carrier platform (42) and a lifting piece. Among them, the lower carrier is flexibly connected to the carrier of the support component (1); the carrier platform (42) is horizontally and fixedly connected to the side of the transfer connecting piece for carrying the battery cell (0); the lifting piece is slidably connected to the transfer connecting piece along 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 electrode tab pressing piece for lifting the electrode tab (02).

2. The self-adaptive flexible clamping fixture for an electric core according to claim 1, wherein: The carrier includes a base (11), a linear rail slider (12), a positioning fork block (13) and an anti-collision block (14). Among them, the base (11) is horizontally arranged; the linear rail slider (12) is arranged at the bottom of the base (11), and a linear rail groove (A) is arranged inside the linear rail slider (12) for slidably nesting on the linear slide 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 for blocking and limiting during sliding; a support platform extending horizontally outward is arranged on one side of the base (11).

3. The self-adaptive flexible clamping fixture for battery cells according to claim 2, wherein: The connecting piece 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 along 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).

4. The self-adaptive flexible clamping fixture for an electric core according to claim 3, wherein: The transfer connecting piece 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 one 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 extend along the vertical direction respectively; the extending support block (24) is arranged on the other side wall of the first sliding seat (21) and extends horizontally outwards; a vertically extending extending guide bar (B) 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.

5. The self-adaptive flexible clamping fixture for battery cells according to claim 4, characterized in that: The battery cell pressing transfer piece 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).

6. The self-adaptive flexible clamping fixture for battery cells according to claim 5, characterized in that: The tab pressing transfer piece 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).

7. The self-adaptive flexible clamping fixture for an electric core according to claim 5, characterized in that: The cell pressing member 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).

8. An adaptive flexible clamping fixture for battery cells according to claim 6, characterized in that: 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); the limiting column (36) includes at least two, and at least two limiting columns (36) are vertically arranged on the support seat (33) for downwardly abutting against the bearing platform (42) when pressing the tab to perform limit limiting.

9. The self-adaptive flexible clamping fixture for battery cells according to claim 6, wherein: The lower bearing member includes a third spring (46), and 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) for receiving an external acting force.

10. A cell production line including the cell self-adaptive flexible clamping fixture according to claim 1.

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