Battery cell extrusion mechanism

Abstract

The utility model discloses a battery cell extrusion mechanism, and relates to the technical field of battery cell module production equipment.The battery cell extrusion mechanism comprises a support, an extrusion head installed on the support in a sliding mode and a driving assembly used for driving the extrusion head to move front and back in the battery cell extrusion direction, and the driving assembly is arranged below the extrusion head; the fixed end of the driving assembly is fixedly connected with the support, and the movable end of the driving assembly is in transmission connection with the extrusion head. The driving assembly is arranged below the extrusion head, so that the driving assembly and the extrusion head are distributed in the height direction, the occupied space of the battery cell extrusion mechanism is reduced, and manual operation at the two ends of the battery cell module is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of battery cell module production equipment, and specifically to a battery cell extrusion mechanism. Background Art

[0002] During the production of battery modules, multiple cells are stacked, end plates are attached to both ends of the stacked cells, and finally, steel strips are applied to the outer sides of the end plates to secure the stacked cells and end plates. Before applying the steel strips to the outer sides of the stacked cells, a pressing mechanism is used to pre-press the stacked cells and end plates horizontally, and then the steel strips are manually applied to the outer sides of the end plates.

[0003] The existing extrusion mechanism generally includes an extrusion head for contacting the end plate and a driving member (such as a cylinder) that drives the extrusion head to move horizontally to extrude the stacked battery cells and end plates. Usually, the driving member is horizontally installed on the side of the extrusion head away from the battery cell, which makes the overall length of the extrusion mechanism too long. As a result, the existing extrusion mechanism occupies a large space and is not conducive to manual operation at both ends of the battery cell module. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a battery cell squeezing mechanism to solve the problem in the prior art that the squeezing mechanism occupies a large space and is not conducive to manual operation at both ends of the battery cell module.

[0005] The purpose of this application can be achieved through the following technical solutions:

[0006] The present application provides a battery cell extrusion mechanism, which includes a bracket, an extrusion head slidably mounted on the bracket, and a drive assembly for driving the extrusion head to move back and forth along the battery cell extrusion direction. The drive assembly is arranged below the extrusion head, the fixed end of the drive assembly is fixedly connected to the bracket, and the movable end of the drive assembly is transmission-connected to the extrusion head.

[0007] The present application arranges the driving assembly below the extrusion head so that the driving assembly and the extrusion head are distributed in the height direction, thereby reducing the space occupied by the battery cell extrusion mechanism and facilitating manual operation at both ends of the battery cell module.

[0008] Optionally, a downwardly extending vertical plate is provided at the bottom of the extrusion head, and an inclined surface is provided on the vertical plate. The driving assembly includes a driver mounted on the bracket and a lifting member abutting the inclined surface. The driving end of the driver is transmission-connected to the lifting member. The driver is configured to drive the lifting member to rise to cooperate with the inclined surface on the vertical plate to drive the extrusion head to move along the direction of battery cell extrusion.

[0009] A specific design style is provided for a driving component to drive the extrusion head to move along the battery cell extrusion direction, so that the driving component includes a driver and a lifting member, and a vertical plate is provided at the bottom of the extrusion head, and an inclined surface is provided on the vertical plate to abut against the lifting member, so that the driver can drive the lifting member to rise to drive the extrusion head to move horizontally along the battery cell extrusion direction, thereby preventing the driving component from extending toward both ends of the battery cell extrusion mechanism when driving the extrusion head to move.

[0010] Optionally, a first guide wheel is rotatably connected to the lifting member, and the lifting member abuts against the inclined surface through the first guide wheel.

[0011] By setting the first guide wheel, when the lifting member and the inclined surface move relative to each other, the first guide wheel and the inclined surface are rolled together to reduce the wear of the lifting member and the inclined surface.

[0012] Optionally, the driver is provided with a first synchronous wheel, a rotating shaft is rotatably connected to the bracket, a second synchronous wheel is provided at the first end of the rotating shaft, a synchronous belt is provided between the first synchronous wheel and the second synchronous wheel, and the second end of the rotating shaft is threadedly connected to the lifting member. The driver is configured to drive the first synchronous wheel and the second synchronous wheel to rotate synchronously and cooperate with the rotating shaft to drive the lifting member to rise and fall.

[0013] The invention provides a specific design style of a driver driving a lifting member to lift, which has a simple structure and is easy to install.

[0014] Optionally, a vertical slide rail is vertically installed on the bracket, and the lifting member is slidably installed on the vertical slide rail through a first sliding block.

[0015] The vertical slide rail is provided to guide the movement of the lifting member, thereby improving the stability of the movement of the lifting member.

[0016] Optionally, a guide groove parallel to the inclined surface is provided on the side of the vertical plate close to the lifting member, and a second guide wheel matching the guide groove is provided on the lifting member.

[0017] When the lifting member rises, the second guide wheel moves from the bottom end of the guide groove to the top end of the guide groove;

[0018] When the lifting member descends, the second guide wheel is pressed against the lower groove wall of the guide groove and moves from the top end of the guide groove to the bottom end of the guide groove, so that the second guide wheel drives the extrusion head to reset.

[0019] A specific design style is provided for a driving component to drive the extrusion head to move in the opposite direction of the battery cell extrusion and reset. By setting a second guide wheel and a guide groove cooperating with the second guide wheel, the driver can drive the extrusion head to move in the opposite direction of the battery cell extrusion and reset by driving the lifting member to descend, which is convenient, fast and high-precision.

[0020] Optionally, the lifting member is provided with a guide rod arranged along the extrusion direction of the battery cell, both ends of the guide rod are installed on the lifting member through fixed blocks, the second guide wheel is slidably installed on the guide rod through the mounting block, and a spring is sleeved on the guide rod, the first end of the spring abuts against the mounting block, and the second end of the spring abuts against one of the fixed blocks.

[0021] By sliding the second guide wheel on the guide rod through the mounting block and sleeved with a spring on the guide rod with one end abutting the mounting block and the other end abutting one of the fixed blocks, the second guide wheel can avoid getting stuck when moving along the extrusion direction of the battery cell. At the same time, the spring can always press the second guide wheel against the lower groove wall of the guide groove to ensure the stability of the second guide wheel moving in the guide groove.

[0022] Optionally, the bracket is provided with a horizontal slide rail arranged along the extrusion direction of the battery cell, the extrusion head is slidably mounted on the horizontal slide rail through a second slider, and the bracket is provided with a slot for the vertical plate to pass through.

[0023] The horizontal slide rail can guide the movement of the extrusion block to ensure the stability of the movement of the extrusion block. By providing a slot for the vertical plate to pass through the bracket, the vertical plate can pass through the slot and extend into the bracket, making the structure more compact and avoiding the drive component extending out of the bracket to cooperate with the vertical plate.

[0024] Optionally, a pressure sensor is provided on the extrusion head, and the pressure sensor is configured to detect the reaction force of the extruded object on the extrusion head;

[0025] and / or,

[0026] A contact sensor is provided on the extrusion head, and the contact sensor is configured to detect whether the end plate fixing plate of the pressure maintaining mechanism has retracted into place.

[0027] The pressure sensor can detect the reaction force of the extrusion head so that when the reaction force exerted on the extrusion head reaches the set value, the driving component can drive the extrusion head in time to prevent the extrusion head from over-extruding the battery cell module.

[0028] The contact sensor can detect whether the end plate fixing plate of the pressure holding mechanism is in a pressure holding state that has not been retracted into place, thereby preventing the extrusion head from pushing the end plate fixing plate in the pressure holding state to cause damage to the pressure holding mechanism and the compressed battery module.

[0029] Optionally, the battery cell extrusion mechanism is configured to extrude the battery cell module from both ends of the battery cell module. The battery cell extrusion mechanism includes a pair of brackets arranged opposite to each other and a support frame arranged between the pair of brackets for placing the battery cell. Each bracket is provided with at least one extrusion head and a driving component for driving the extrusion head to move forward and backward along the battery cell extrusion direction.

[0030] By setting a pair of brackets and a support frame between the pair of brackets, and providing at least one extrusion head and a drive assembly on each bracket, the battery cell extrusion mechanism can extrude at least one battery cell module placed on the support frame, and the extrusion of the battery cell module is simultaneously promoted from both ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present application will be further described below with reference to the accompanying drawings.

[0032] Figure 1 This is a three-dimensional diagram of the battery cell squeezing mechanism from a first perspective in one embodiment of the present application;

[0033] Figure 2 This is a perspective view of the battery cell squeezing mechanism from a second perspective in one embodiment of the present application;

[0034] Figure 3 This is a schematic structural diagram of the second guide wheel and the guide groove in one embodiment of the present application;

[0035] Figure 4 This is a schematic diagram of the structure of a pressure sensor and a contact sensor in one embodiment of the present application;

[0036] Figure 5 This is a structural diagram of the assembly of the battery cell extrusion mechanism and the pressure holding mechanism in one of the embodiments of the present application.

[0037] Description of reference numerals:

[0038] 1. Bracket; 2. Extrusion head; 3. Drive assembly; 31. Driver; 32. Lifting member; 4. Vertical plate; 41. Inclined surface; 5. Horizontal slide rail; 6. Second slider; 7. First guide wheel; 8. Rotating shaft; 9. Second synchronous wheel; 10. Synchronous belt; 11. Vertical slide rail; 12. First slider; 13. Guide groove; 14. Second guide wheel; 15. Guide rod; 16. Fixed block; 17. Mounting block; 18. Pressure sensor; 19. Contact sensor; 20. Support frame; 30. End plate fixing plate. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] See also Figure 1 and Figure 2As shown, in some embodiments, the present application provides a battery cell extrusion mechanism, which can be used to extrude a battery cell module from at least one end so that a steel belt can be subsequently sleeved on the outside of the battery cell module.

[0041] The cell extrusion mechanism includes a bracket 1, an extrusion head 2, and a drive assembly 3. The extrusion head 2 is slidably mounted on the bracket 1, and the drive assembly 3 is located below the extrusion head 2. The fixed end of the drive assembly 3 is fixedly connected to the bracket 1, and the movable end of the drive assembly 3 is in transmission connection with the extrusion head 2. The drive assembly 3 is configured to drive the extrusion head 2 to move forward and backward along the cell extrusion direction, causing the extrusion head 2 to squeeze or release the cell module.

[0042] Compared to setting the drive assembly 3 at one end of the extrusion head 2, in the present application, the drive assembly 3 is set below the extrusion head 2 to reduce the space occupied by the battery cell extrusion mechanism, making it easier for manual operation at both ends of the battery cell module.

[0043] See also Figure 2 As shown, in some embodiments, a downwardly extending vertical plate 4 is fixedly mounted at the bottom of the extrusion head 2, and a downwardly inclined slope 41 is provided at the bottom of the vertical plate 4 along the direction of cell extrusion. The driving assembly 3 includes a driver 31 and a lifting member 32. The driver 31 is mounted on the bracket 1, and the movable end of the driver 31 is in transmission cooperation with the lifting member 32. The lifting member 32 is in abutment with the inclined surface 41 of the vertical plate 4. The driver 31 drives the lifting member 32 to rise, so that the lifting member 32 cooperates with the inclined surface 41 on the vertical plate 4 to drive the extrusion head 2 to move along the direction of cell extrusion, so that the extrusion head 2 performs the extrusion operation. Optionally, the driver 31 uses a motor, and the motor is vertically arranged on the bracket 1.

[0044] See also Figure 2 As shown, in some embodiments, a horizontal slide rail 5 arranged along the direction of cell extrusion is provided on the top of the bracket 1, and the extrusion head 2 is slidably mounted on the horizontal slide rail 5 via a second slider 6. The driver 31 and the lifting member 32 are both disposed inside the bracket 1. A slot is provided on the top of the bracket 1 for the vertical plate 4 to pass through, so that the inclined surface 41 of the vertical plate 4 extends through the slot into the bracket 1 and abuts against the lifting member 32.

[0045] See also Figure 2 As shown, in some embodiments, a first guide wheel 7 is rotatably connected to the lifting member 32, and the lifting member 32 abuts against the inclined surface 41 via the first guide wheel 7. When the lifting member 32 rises, the first guide wheel 7 abuts against the inclined surface 41 of the riser 4 and rolls upward along the inclined surface 41. The first guide wheel 7 cooperates with the inclined surface 41 on the riser 4 to drive the extrusion head 2 in the direction of cell extrusion, thereby preventing wear between the lifting member 32 and the inclined surface 41 of the riser 4.

[0046] See also Figure 2As shown, in some embodiments, a first synchronous pulley (not shown) is mounted on the driving end of the driver 31. A rotating shaft 8 is rotatably mounted on the bracket 1 via a bearing. The rotating shaft 8 is arranged vertically. A second synchronous pulley 9 is mounted on the first end of the rotating shaft 8. A synchronous belt 10 is interposed between the first and second synchronous pulleys 9. The second end of the rotating shaft 8 is threadedly connected to the lifting member 32. The driver 31 rotates the first synchronous pulley, which in turn drives the second synchronous pulley 9 to rotate synchronously via the synchronous belt 10. The second synchronous pulley 9 then drives the rotating shaft 8 to rotate, causing the lifting member 32 to rise or fall along the rotating shaft 8.

[0047] See also Figure 2 As shown, in some embodiments, a vertical slide rail 11 arranged along the vertical direction is fixedly installed on the bracket 1, and the lifting member 32 is slidably installed on the vertical slide rail 11 through the first slider 12 to guide the movement of the lifting member 32 and improve the stability of the movement of the lifting member 32.

[0048] See also Figure 2 and Figure 3 As shown, in some embodiments, a guide slot 13 parallel to the inclined surface 41 is defined on the side of the riser 4 near the lifting member 32. A second guide wheel 14 is mounted on the lifting member 32. The second guide wheel 14 is inserted into the guide slot 13 to mate with the guide slot 13, and the second guide block is fixedly connected to the lifting member 32 at least along the vertical direction. When the lifting member 32 rises to drive the extrusion head 2 in the direction of cell extrusion, the second guide wheel 14 rises synchronously with the lifting member 32, moving from the bottom end of the guide slot 13 to the top end of the guide slot 13 along the length of the guide slot 13. When the lifting member 32 descends, the second guide wheel 14 descends synchronously with the lifting member 32, pressing against the lower wall of the guide slot 13 and moving from the top end of the guide slot 13 to the bottom end of the guide slot 13 along the length of the guide slot 13, thereby pulling the extrusion head 2 through the guide slot 13 in the opposite direction of the cell extrusion direction.

[0049] See also Figure 3 As shown, in some embodiments, a guide rod 15 is provided on the lifting member 32 and arranged along the direction of battery cell extrusion. Both ends of the guide rod 15 are fixedly mounted on the lifting member 32 by fixing blocks 16. The second guide wheel 14 is slidably mounted on the guide rod 15 through the mounting block 17, so that the second guide wheel 14 is movably mounted on the lifting member 32 along the direction of battery cell extrusion, so that the second guide wheel 14 can float along the direction of battery cell extrusion to avoid mechanism jamming and facilitate the second guide wheel 14 to be inserted into the guide groove 13 and abut against the inner wall of the guide groove 13.

[0050] A spring (not shown) is sleeved on the guide rod 15, the first end of the spring abuts against the mounting block 17, and the second end of the spring abuts against one of the fixed blocks 16, so that the spring can limit the second guide wheel 14 along the battery cell extrusion direction to a certain extent, ensuring that the second guide wheel 14 can be fine-tuned while the spring always presses the second guide wheel 14 against the lower groove wall of the guide groove 13, ensuring the stability of the second guide wheel 14 moving in the guide groove 13.

[0051] See also Figure 4 As shown, in some embodiments, a pressure sensor 18 is provided on the extrusion head 2, and the pressure sensor 18 is configured to detect the reaction force of the extruded object on the extrusion head 2 (that is, the reaction force of the extrusion head 2 to the thrust of the extruded object). When the pressure sensor 18 detects that the reaction force exerted on the extrusion head 2 reaches a set value, the driver 31 immediately stops driving the extrusion head 2 to prevent the driver 31 from driving the extrusion head 2 to over-extrude the battery cell module.

[0052] See also Figure 4 and Figure 5 As shown, in some embodiments, a contact sensor 19 is further provided on the extrusion head 2, and the contact sensor 19 is configured to detect whether the end plate fixing plate 30 of the pressure holding mechanism is retracted into place, so that when the battery cell extrusion mechanism and the pressure holding mechanism are used in conjunction with each other, the extrusion head 2 pushes the end plate fixing plate 30 of the pressure holding mechanism to extrude the battery cell module, thereby preventing the end plate fixing plate 30 of the pressure holding mechanism from being not retracted into place and is still in a pressure holding state, and causing damage to the pressure holding mechanism and the compressed battery cell module by pushing the end plate fixing plate 30.

[0053] See also Figure 5 As shown, in some embodiments, the cell extrusion mechanism is configured to extrude the cell module from both ends of the cell module. The cell extrusion mechanism includes a pair of brackets 1 disposed opposite each other and a support frame 20 disposed between the pair of brackets 1. Each bracket 1 is provided with at least one extrusion head 2 and a movable assembly for driving the extrusion head 2 to move forward and backward along the cell extrusion direction. The cell extrusion mechanism of the present application is capable of extruding at least one cell module placed on the support frame 20, and the extrusion of the cell module is simultaneously promoted from both ends.

[0054] The above is a detailed description of an embodiment of the present application. However, the content is only a preferred embodiment of the present application and cannot be considered to limit the scope of implementation of the present application. All equivalent changes and improvements made within the scope of the present application should still fall within the scope of the patent application.

[0055] It should be noted that the terms "first", "second" and similar terms used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The descriptions of the directions of "left", "right", "left side", "right side", "upper", "lower", "top", "bottom" and so on in this application are all defined based on the relationship between the orientations or positions shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. In the description of this application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0056] In the description of this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

Claims

1. A battery cell extrusion mechanism, characterized in that: The battery cell extrusion mechanism includes a bracket, an extrusion head slidably mounted on the bracket, and a driving assembly for driving the extrusion head to move back and forth along the battery cell extrusion direction. The driving assembly is arranged below the extrusion head, the fixed end of the driving assembly is fixedly connected to the bracket, and the movable end of the driving assembly is transmission-connected to the extrusion head.

2. The battery cell extrusion mechanism according to claim 1, characterized in that: A downward extending vertical plate is provided at the bottom of the extrusion head, and an inclined surface is provided on the vertical plate. The driving assembly includes a driver mounted on the bracket and a lifting member abutting against the inclined surface. The driving end of the driver is transmission-connected to the lifting member, and the driver is configured to drive the lifting member to rise to cooperate with the inclined surface on the vertical plate to drive the extrusion head to move along the battery cell extrusion direction.

3. The battery cell extrusion mechanism according to claim 2, characterized in that: The lifting member is rotatably connected to a first guide wheel, and the lifting member abuts against the inclined surface through the first guide wheel.

4. The battery cell extrusion mechanism according to claim 3, characterized in that: The driver is provided with a first synchronous wheel, the bracket is rotatably connected to a rotating shaft, the first end of the rotating shaft is provided with a second synchronous wheel, a synchronous belt is provided between the first synchronous wheel and the second synchronous wheel, the second end of the rotating shaft is threadedly connected to the lifting member, and the driver is configured to drive the first synchronous wheel and the second synchronous wheel to rotate synchronously and cooperate with the rotating shaft to drive the lifting member to rise and fall.

5. The battery cell extrusion mechanism according to claim 2, characterized in that: A vertical slide rail is vertically installed on the bracket, and the lifting member is slidably installed on the vertical slide rail through a first sliding block.

6. The battery cell extrusion mechanism according to claim 2, characterized in that: A guide groove parallel to the inclined surface is provided on the side of the vertical plate close to the lifting member, and a second guide wheel matching the guide groove is provided on the lifting member. When the lifting member rises, the second guide wheel moves from the bottom end of the guide groove to the top end of the guide groove; When the lifting member descends, the second guide wheel is pressed against the lower groove wall of the guide groove and moves from the top end of the guide groove to the bottom end of the guide groove, so that the second guide wheel drives the extrusion head to reset.

7. The battery cell extrusion mechanism according to claim 6, characterized in that: The lifting member is provided with a guide rod arranged along the extrusion direction of the battery cell, and both ends of the guide rod are installed on the lifting member through fixed blocks. The second guide wheel is slidably installed on the guide rod through the mounting block. A spring is sleeved on the guide rod, and the first end of the spring abuts against the mounting block, and the second end of the spring abuts against one of the fixed blocks.

8. The battery cell extrusion mechanism according to claim 2, characterized in that: The bracket is provided with a horizontal slide rail arranged along the extrusion direction of the battery core, the extrusion head is slidably mounted on the horizontal slide rail via a second slider, and the bracket is provided with a slot body for the vertical plate to pass through.

9. The battery cell extrusion mechanism according to claim 1, characterized in that: The extrusion head is provided with a pressure sensor, and the pressure sensor is configured to detect the reaction force of the extruded object on the extrusion head; and / or, A contact sensor is provided on the extrusion head, and the contact sensor is configured to detect whether the end plate fixing plate of the pressure maintaining mechanism has retracted into place.

10. The battery cell squeezing mechanism according to any one of claims 1 to 9, characterized in that: The battery cell extrusion mechanism is configured to extrude the battery cell module from both ends of the battery cell module. The battery cell extrusion mechanism includes a pair of brackets arranged opposite to each other and a support frame arranged between the pair of brackets for placing the battery cell. Each of the brackets is provided with at least one extrusion head and a driving component for driving the extrusion head to move forward and backward along the battery cell extrusion direction.

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