A power battery package film cutting and trimming integrated tooling

Abstract

This invention discloses an integrated tooling for trimming and edge-cutting power battery coatings, comprising a tooling base plate; a main support is mounted on the top of the tooling base plate; the upper end of the main support is pivotally connected to the rear end of a battery outer film fixing shaft; a battery outer film roll is sleeved on the outer wall of the battery outer film fixing shaft; an outer film guide shaft is mounted on the left side of the battery outer film fixing shaft; a first linear guide rail is mounted on the left side of the outer film guide shaft; a cutter sliding block is mounted on the slider of the first linear guide rail; a blade fixing block is mounted on the left end of the cutter sliding block; a blade is mounted at the bottom of the blade fixing block; a cutter cutting positioning block is mounted on the top of the tooling base plate; a battery positioning block is mounted on the left side of the cutter cutting positioning block; a movable coating extrusion bracket is mounted on the top of the tooling base plate; and a coating extrusion roller is mounted on the bottom surface of the top plate of the coating extrusion bracket. This invention ensures that no large air bubbles are generated on the battery surface during battery coating and allows the upper end of the battery outer film to be trimmed flat, ensuring the consistency of battery thickness.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to an integrated tooling for cutting the edge of a power battery pack. Background Technology

[0002] Currently, lithium-ion batteries have advantages such as high specific energy, high cycle life, and long storage time. They are widely used not only in portable electronic devices (such as mobile phones, digital cameras, and laptops), but also in large and medium-sized electric equipment such as electric vehicles, electric bicycles, and power tools. Therefore, the performance requirements for lithium-ion batteries are becoming increasingly stringent.

[0003] The performance of high-capacity onboard power batteries directly affects the overall performance of electric vehicles. This places higher demands on electric vehicle power batteries (such as higher safety, better performance, and lighter weight).

[0004] Currently, battery reliability and safety are technical challenges and key points in the module assembly process. In particular, the welding connection and connection strength during the battery connection process affect the performance of the module itself. Among them, the consistency and firmness of the welding position are direct factors affecting the performance of the battery itself (including internal resistance and capacity).

[0005] Before assembling modules, existing batteries need to be coated with a film. The coating requires that there be no air bubbles on the battery surface. If there are air bubbles, it will lead to poor battery thickness consistency, resulting in misalignment during the welding process when assembling the module later. At the same time, the edge of the outer film on the battery must be flat and cannot exceed 0.5mm beyond the top edge of the battery. If it exceeds 0.5mm, it will affect the welding during the later assembly of the module.

[0006] Currently, battery coating is still done manually. Manual coating is slow, requires a lot of labor, and cannot guarantee the consistency of coating quality. In addition, the edges of the outer film, which are manually trimmed, are not neat, which can cause the busbar to be soldered through due to impurities (i.e., coating interference). This not only poses a great safety hazard to the battery module, but can also lead to problems such as the degradation of module performance and cycle life. Moreover, it increases the internal resistance of the battery, affecting various parameters and performance of the lithium battery module, and ultimately making the module unusable.

[0007] Therefore, there is an urgent need to develop a technology that can ensure no large air bubbles are generated on the surface of lithium-ion batteries during the coating process and that the upper edge of the outer film can be trimmed flat to ensure the consistency of battery thickness. This would greatly improve the efficiency of lithium-ion battery module welding and assembly, ensure module quality, guarantee the safe use of lithium-ion battery modules, and extend the module's service life. Summary of the Invention

[0008] The purpose of this invention is to address the technical deficiencies of existing technologies by providing an integrated tooling for cutting the edge of a power battery pack.

[0009] To this end, the present invention provides an integrated tooling for cutting the edge of a power battery pack, which includes horizontally distributed tooling base plates;

[0010] A main support is vertically installed on the rear right side of the top of the tooling base plate;

[0011] The upper end of the main support is pivotally connected to the rear end of a battery outer membrane fixing shaft;

[0012] At the front and rear ends of the battery outer film fixing shaft, there is an outer film fixing block and an outer film limiting block, respectively.

[0013] The outer wall of the battery outer film fixing shaft is used to fit a battery outer film roll;

[0014] The battery outer film roll is located between the outer film fixing block and the outer film limiting block;

[0015] On the left side of the battery outer membrane fixing shaft, there is a longitudinally distributed outer membrane guide shaft;

[0016] The installation height of the outer membrane guide shaft is lower than the installation height of the battery outer membrane fixing shaft;

[0017] On the left side of the outer membrane guide shaft, there is a first linear guide rail that is longitudinally distributed;

[0018] The slider of the first linear guide is provided with horizontally distributed cutting blade sliding blocks;

[0019] The left end of the cutter sliding block protrudes beyond the left side of the first linear guide rail;

[0020] At the left end of the cutter sliding block, there is a vertically distributed blade fixing block;

[0021] The bottom of the blade fixing block is provided with longitudinally distributed blades;

[0022] On the top of the tooling base plate, directly below the blade, there are longitudinally distributed cutting positioning blocks;

[0023] The cutter cuts the left side of the positioning block, where a battery positioning block is located;

[0024] The top of the battery positioning block is used to insert and position the battery.

[0025] On the top of the tooling base plate, at the front and rear sides of the battery positioning block, there is a second linear guide rail that is horizontally distributed.

[0026] The sliders at the top of the two second linear guides are respectively connected to the bottom of the front and rear ends of the longitudinally distributed film extrusion bracket;

[0027] The top plate of the coating extrusion bracket is equipped with a rotatable, cylindrical coating extrusion roller.

[0028] Preferably, the top plate of the coating extrusion bracket is provided with a longitudinally distributed coating extrusion roller mounting plate;

[0029] At the front and rear ends of the bottom of the coating extrusion roller mounting plate, a coating extrusion roller limiting block is vertically installed;

[0030] The two coating extrusion roller limit blocks are pivotally connected to one side of each other.

[0031] Preferably, a transversely distributed lateral position adjustment guide groove is provided at both the front and rear ends of the cutter sliding block; the cutter sliding block is threadedly fixed to the threaded hole reserved on the slider of the first linear guide by a screw passing through the lateral position adjustment guide groove.

[0032] Preferably, a battery positioning groove is provided on the top of the battery positioning block;

[0033] The battery positioning groove is used to insert and position the battery.

[0034] The battery positioning block has a battery insertion / removal notch on the front side of the battery positioning groove.

[0035] Preferably, a linkage coil connection through hole is provided at the upper end of the main support;

[0036] A battery outer membrane fixing shaft connecting plate is pivotally connected to the through hole of the linkage coil;

[0037] The rear side of the battery outer membrane fixing shaft connecting plate is connected to the front center position of a linkage coil;

[0038] The front center mounting hole of the battery outer membrane fixing shaft connecting plate is connected to the rear end of the battery outer membrane fixing shaft.

[0039] Preferably, at the lower end of the main support, a waste material fixing shaft connecting through hole is also provided directly below the linkage coil connecting through hole;

[0040] A circular waste material fixing shaft timing pulley is provided on the rear side of the waste material fixing shaft connecting through hole;

[0041] The rear end of a waste material fixing shaft passes vertically through the waste material fixing shaft connecting through hole and is connected to the center hole of the waste material fixing shaft synchronous belt pulley;

[0042] The linkage coil is linked to the synchronous pulley of the waste material fixed shaft via a synchronous drive belt.

[0043] Preferably, a bearing mounting plate is provided on the rear side of the waste material fixing shaft connecting through hole;

[0044] The rear end of the scrap fixing shaft passes vertically through the connecting through hole of the scrap fixing shaft and the through hole reserved on the bearing mounting plate from front to back, and then connects to the center hole of the synchronous pulley of the scrap fixing shaft.

[0045] Preferably, three outer film roll clamping blocks are arranged around the outer wall of the battery outer film fixing shaft;

[0046] The installation height of the first guide rail is higher than the installation height of the outer membrane guide shaft.

[0047] Preferably, the front and rear ends of the outer membrane guide shaft are pivotally connected to the upper end of an outer membrane guide shaft support, respectively;

[0048] The bottom of the two outer membrane guide shaft brackets is fixedly installed at the front and rear ends of the top of the tooling base plate;

[0049] The bottom front and rear ends of the first linear guide are respectively connected to the top of a first linear guide bracket;

[0050] The bottom of the two first linear guide rail brackets is fixedly installed at the front and rear ends of the top of the tooling base plate.

[0051] Preferably, a threaded hole is provided at each of the front and rear ends of the left side wall of the cutter sliding block;

[0052] The blade fixing block is provided with a longitudinally distributed height adjustment guide groove at the position corresponding to the two threaded holes;

[0053] The blade retaining block is threadedly fixed to the corresponding threaded hole on the cutter sliding block by a screw passing through the height adjustment guide groove.

[0054] As can be seen from the technical solution provided by the present invention above, compared with the prior art, the present invention provides an integrated tooling for cutting the edge of a power battery pack. Its structure is scientifically designed, which can ensure that no large air bubbles are generated on the surface of the battery when the battery is being packed, and can make the upper end of the outer film of the battery flat, thereby ensuring the consistency of the battery thickness. This can greatly improve the efficiency of welding and assembling lithium-ion battery modules, ensure the quality of the modules, ensure the safe use of lithium-ion battery modules, and extend the service life of the modules, which has significant practical significance. Attached Figure Description

[0055] Figure 1 A three-dimensional structural schematic diagram of an integrated tooling for cutting the edge of a power battery pack, provided by the present invention. Figure 1 ;

[0056] Figure 2 A three-dimensional structural schematic diagram of an integrated tooling for cutting the edge of a power battery pack, provided by the present invention. Figure 2 ;

[0057] Figure 3 An exploded three-dimensional view of an integrated tooling for cutting the edge of a power battery pack, provided by the present invention.

[0058] Figure 4 A schematic diagram of the structure of a battery outer film roll used in the integrated tooling for cutting the edge of a power battery pack provided by the present invention;

[0059] Figure 5 A schematic diagram of the lower structure of a blade used in an integrated tooling for cutting the edge of a power battery pack provided by the present invention.

[0060] In the diagram, 1 is the linkage coil, 2 is the battery outer film fixing shaft, 3 is the outer film fixing block, 4 is the waste material fixing shaft, and 5 is the outer film guide shaft.

[0061] 6. First linear guide rail; 7. Tooling base plate; 8. Cutting and positioning block; 9. Battery positioning block; 10. Second linear guide rail.

[0062] 11. Coating extrusion support; 12. Cutter sliding block; 13. Blade fixing block; 14. Outer membrane limiting block. Detailed Implementation

[0063] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0065] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0067] See Figures 1 to 5 The present invention provides an integrated tooling for cutting the edge of a power battery pack, including horizontally distributed tooling base plates 7;

[0068] A main support 700 is vertically installed on the rear right side of the top of the tooling base plate 7;

[0069] The upper end of the main bracket 700 is pivotally connected (i.e. rotatably connected) to the rear end of a battery outer membrane fixing shaft 2;

[0070] At the front and rear ends of the battery outer membrane fixing shaft 2, there is an outer membrane fixing block 3 and an outer membrane limiting block 14 respectively;

[0071] The outer wall of the battery outer membrane fixing shaft 2 is used to fit a battery outer membrane roll 100.

[0072] The battery outer film roll 100 is located between the outer film fixing block 3 and the outer film limiting block 14;

[0073] It should be noted that the outer film pulled out from the battery outer film roll is used to adhere to the battery surface, that is, to coat the battery surface.

[0074] On the left side of the battery outer membrane fixing shaft 2, there is a longitudinally distributed outer membrane guide shaft 5;

[0075] The installation height of the outer membrane guide shaft 5 is lower than the installation height of the battery outer membrane fixing shaft 2;

[0076] On the left side of the outer membrane guide shaft 5, there is a longitudinally distributed first linear guide rail 6;

[0077] On the slider of the first linear guide 6, there are horizontally distributed cutting slide blocks 12;

[0078] The left end of the cutter sliding block 12 protrudes from the left side of the first linear guide rail 6;

[0079] A vertically distributed blade fixing block 13 is provided at the left end of the cutter sliding block 12;

[0080] The bottom of the blade fixing block 13 is provided with longitudinally distributed blades 130; in specific implementation, the upper part of the blade can be engaged with the bottom of the blade fixing block 13, or the upper part of the blade is reserved with a threaded through hole, which is threadedly fixed to the lower part of the blade fixing block 13 with a fastening bolt.

[0081] On the top of the tooling base plate 7, directly below the blade 130, there are longitudinally distributed cutting positioning blocks 8;

[0082] It should be noted that a transversely distributed lateral position adjustment guide groove 1201 is provided at both the front and rear ends of the cutter sliding block 12; the cutter sliding block 12 is threadedly fixed to the threaded hole reserved on the slider of the first linear guide rail 6 by a screw passing through the lateral position adjustment guide groove 1201.

[0083] Therefore, the present invention can adjust the lateral position of the cutter sliding block 12 by moving the screw left and right to adjust the fixed position on the guide groove 1201 in the lateral position, thereby achieving the adjustment of the lateral position of the blade on the blade fixing block 13.

[0084] It should be noted that after the blade is installed at the bottom of the blade fixing block 13, the height of the bottom of the blade edge should be the same as or slightly higher than the height of the top surface of the cutting positioning block 8 (the height exceeding the top surface should be less than the thickness of one layer of battery outer film), so that the battery outer film placed on the top surface of the cutting positioning block 8 can be cut.

[0085] The cutter cuts the left side of the positioning block 8, where a battery positioning block 9 is located;

[0086] The top of the battery positioning block 9 is used to insert and position the battery.

[0087] On the top of the tooling base plate 7, at the positions of the front and rear sides of the battery positioning block 9, there are two horizontally distributed second linear guide rails 10.

[0088] The sliders at the top of the two second linear guides 10 are respectively connected to the bottom of the front and rear ends of the longitudinally distributed film extrusion brackets 11;

[0089] The top plate of the coating extrusion support 11 is provided with a rotatable (clockwise and counterclockwise) cylindrical coating extrusion roller 1101.

[0090] The coating extrusion roller 1101 is used to move laterally left and right along the second linear guide 10 after the battery outer film is attached to the top of the battery on the battery positioning block 9. When it moves above the battery, it extrudes downwards the top of the battery with the battery outer film attached, thus squeezing out the air bubbles between the battery and the battery outer film.

[0091] It should be noted that, for the present invention, the sliding coating extrusion device, including the coating extrusion bracket 11 and the coating extrusion roller 1101, is used to cooperate with the battery positioning block 9 to extrude air bubbles on the surface of the battery with the coating. The cutting blade sliding device, including the first linear guide rail 6 and the blade fixing block 13, is used to cooperate with the cutting blade cutting positioning block 8 to cut the outer film of the battery on the top of the cutting blade cutting positioning block 8.

[0092] In this invention, specifically, the top plate of the coating extrusion bracket 11 is provided with a longitudinally distributed coating extrusion roller mounting plate 1102.

[0093] At the front and rear ends of the bottom of the coating extrusion roller mounting plate 1102, a coating extrusion roller limiting block 1103 is vertically provided;

[0094] The two coating extrusion roller limit blocks 1103 are pivotally (rotatably) connected to one side of each other.

[0095] In this invention, specifically, the installation height of the first guide rail 6 is higher than the installation height of the outer membrane guide shaft 5.

[0096] In this invention, specifically, a battery positioning groove 901 is provided on the top of the battery positioning block 9;

[0097] The battery positioning groove 901 is used to insert and position the battery.

[0098] It should be noted that the shape and size of the battery positioning groove 901 correspond to and match the shape and size of the battery that needs to be coated.

[0099] The battery positioning block 9 has a battery insertion / removal notch 902 on the front side of the battery positioning groove 901.

[0100] It should be noted that the battery insertion / removal notch 902 allows for easy insertion into and removal from the battery positioning groove 901.

[0101] In this invention, specifically, a linkage coil connection through hole 701 is provided at the upper end of the main support 700;

[0102] A battery outer membrane fixing shaft connecting disc 101 is pivotally (rotatably) connected to the linkage coil connecting through hole 701;

[0103] The rear side of the battery outer membrane fixing shaft connecting plate 101 is connected to the front center position of a linkage coil 1;

[0104] The front center mounting hole of the battery outer membrane fixing shaft connecting plate 101 is connected to the rear end of the battery outer membrane fixing shaft 2 (e.g., by snap-fit ​​or plug-in).

[0105] In this invention, specifically, at the lower end of the main support 700, a waste material fixing shaft connecting through hole 702 is also provided directly below the linkage coil connecting through hole 701.

[0106] A circular waste material fixing shaft timing pulley is provided on the rear side of the waste material fixing shaft connecting through hole 702;

[0107] The rear end of a waste fixing shaft 4 passes vertically through the waste fixing shaft connecting through hole 702 and is connected to the center hole of the waste fixing shaft synchronous pulley;

[0108] The linkage coil 1 is linked to the synchronous pulley of the waste material fixing shaft via the synchronous drive belt 102 (i.e., transmission connection), see [link]. Figure 3 As shown;

[0109] In practice, a bearing mounting plate 401 is provided on the rear side of the waste material fixing shaft connecting through hole 702;

[0110] The rear end of the waste material fixing shaft 4 passes vertically through the waste material fixing shaft connecting through hole 702 and the pre-reserved through hole on the bearing mounting plate 401 from front to back, and then connects to the center hole of the synchronous pulley of the waste material fixing shaft (for example, through insertion).

[0111] In this invention, specifically, the radial cross-sectional shape of the battery outer film roll is annular.

[0112] In this invention, specifically, the outer wall of the battery outer film fixing shaft 2 is provided with three outer film roll clamping blocks 201, which are used to clamp onto the longitudinal central through hole of the battery outer film roll.

[0113] It should be noted that in this invention, the shape and structure of the linkage coil 1 are the same as those of the existing synchronous belt pulley.

[0114] In this invention, specifically, the front and rear ends of the outer membrane guide shaft 5 are respectively pivotally connected to the upper end of an outer membrane guide shaft support 501;

[0115] The bottom of the two outer membrane guide shaft brackets 501 are fixedly installed at the front and rear ends of the top of the tooling base plate 7.

[0116] In this invention, specifically, the bottom front and rear ends of the first linear guide rail 6 are respectively connected to the top of a first linear guide rail bracket 601;

[0117] The bottom of the two first linear guide brackets 601 are fixedly installed at the front and rear ends of the top of the tooling base plate 7.

[0118] In this invention, specifically, a threaded hole is provided at each of the front and rear ends of the left side wall of the cutter sliding block 12;

[0119] The blade fixing block 13 is provided with a longitudinally distributed height adjustment guide groove 1301 at the position corresponding to the two threaded holes;

[0120] The blade fixing block 13 is threadedly fixed to the corresponding threaded hole on the cutter sliding block 12 by a screw passing through the height adjustment guide groove 1301.

[0121] It should be noted that the present invention can adjust the vertical position of the blade fixing block 13 by moving the screw up and down on the fixed position of the height adjustment guide groove 1301, thereby realizing the vertical adjustment of the blade height on the blade fixing block 13.

[0122] In this invention, the function of the linkage coil 1 is to control the linkage between the battery outer film fixing shaft 2 and the waste material fixing shaft 4.

[0123] The battery outer membrane fixing shaft 2 and the outer membrane fixing block 3 together serve to fix the battery outer membrane and prevent it from sliding.

[0124] The function of the outer membrane guide shaft 5 is to determine the height of the battery outer membrane;

[0125] The function of the first linear guide 6 is to allow the blade fixing block 12 to slide easily longitudinally;

[0126] The function of the cutting and positioning block 8 is to ensure that the battery outer film is firmly adhered and to position the cutting point of the cutting blade on the battery outer film; the battery positioning block 9 serves to position the battery.

[0127] The second linear guide 10 enables the sliding coating extrusion device, including the coating extrusion bracket 11 and the coating extrusion roller 1101, to slide quickly laterally.

[0128] The function of the sliding coating extrusion device, including the coating extrusion bracket 11 and the coating extrusion roller 1101, is to squeeze out the air bubbles between the battery and the battery outer film, so that the battery and the battery outer film are fully bonded.

[0129] The cutting device, including the first linear guide rail 6 and the blade fixing block 13, is used to cut the outer membrane of the battery. The blade fixing block 13 is used to adjust the vertical height of the blade and fix the blade.

[0130] In this invention, it should be noted that the traditional battery packing method cannot maintain consistency in the cutting of the battery edges. Due to the presence of air bubbles on the battery surface, the battery thickness cannot be kept consistent. As a result, the traditional battery pack is prone to thickness inconsistency, which leads to inconsistent electrode positions in the subsequent battery module process, resulting in busbar explosions during battery module welding.

[0131] The tooling provided by this invention can ensure good consistency between the battery thickness and the upper edge of the battery outer film, effectively preventing module scrap due to explosions during welding. It also simplifies the coating process and improves the production efficiency and product qualification rate of battery modules.

[0132] It should be noted that this invention overcomes the inconsistency in thickness present in traditional lithium-ion power batteries. It significantly improves the thickness consistency of the power battery, thereby ensuring the weld connection and strength during the module manufacturing process. The consistency and firmness of the weld positions directly affect the battery's performance (including internal resistance and capacity). The application of this invention improves the efficiency of power battery module assembly, ensures the weld firmness and strength of lithium-ion battery modules, guarantees the safe use of lithium-ion battery modules, significantly extends the service life of battery modules, improves the assembly quality of battery modules, and ensures long-term normal use of battery modules.

[0133] To better understand the technical solution of the present invention, the operation process of the present invention is described below.

[0134] First, roll the battery outer film roll 100 around the outside of the battery outer film fixing shaft 2 from front to back;

[0135] Then, the battery outer membrane roll 100 is locked in place by the outer membrane fixing block 3;

[0136] Then, by pulling the head reserved by the battery outer film roll, a section of the battery outer film is pulled out, so that the battery outer film passes through the bottom of the outer film guide shaft 5 (with the non-adhesive side of the battery outer film facing up) and is attached to the cutting positioning block 8 of the cutter.

[0137] It should be noted that if there is waste film (for example, a piece of battery outer film that is tangled together or a damaged battery outer film), the waste film is wound and attached to the waste material fixing shaft 4. At this time, the battery outer film can be unwound while rotating the linkage coil 1, so that one end of the waste film is wound on the waste material fixing shaft 4, and the waste material fixing shaft 4 is rotated at the same time to realize the winding operation of the waste film.

[0138] Then, place the battery on the battery positioning block 9 and continue to pull the battery outer film so that the battery outer film adheres to the top surface of the battery;

[0139] Then, along the second linear guide rail 10, push the coating extrusion bracket 11 in the coating extrusion device to the right, and squeeze the battery downward through the coating extrusion roller 1101 below the coating extrusion bracket 11, thereby squeezing out the air bubbles between the top surface of the battery and the outer film of the battery, so that the top surface of the battery and the outer film of the battery are fully bonded.

[0140] Then, the film extrusion bracket 11 returns to its original position, that is, it returns to the top left side of the tooling base plate 7;

[0141] Then, keeping the battery and battery outer film still attached, rotate the battery counterclockwise in the horizontal direction and rotate the battery outer film on it together, so that the other side of the battery is facing up and the battery outer film is still attached to the battery side, and then place it flat on the battery positioning block 9.

[0142] Then, continue along the second linear guide rail 10 and push the coating extrusion bracket 11 in the coating extrusion device to the right. Through the coating extrusion roller 1101 below the coating extrusion bracket 11, the battery is squeezed downward, thereby squeezing out the air bubbles between the top surface of the battery (i.e. the bottom surface of the battery before) and the outer film of the battery, so that the battery and the outer film of the battery are fully bonded. Thus, the coating operation on both sides of the battery is completed.

[0143] Then, the cutter sliding block 12 in the cutter sliding device is pushed along the first linear guide rail 6, so that the cutter at the bottom of the cutter sliding block 12 smoothly and vertically cuts the outer film of the battery located on the cutter cutting positioning block 8 in the longitudinal direction, thereby completing the wrapping and edge cutting operation of a battery.

[0144] In summary, compared with existing technologies, the integrated tooling for cutting and trimming the outer film of a power battery provided by this invention has a scientifically designed structure that ensures no large air bubbles are generated on the battery surface during the film coating process. It also allows for a smooth trimming of the upper edge of the outer film, ensuring consistent battery thickness. This significantly improves the efficiency of welding and assembling lithium-ion battery modules, guarantees module quality, ensures safe use of lithium-ion battery modules, and extends module lifespan, thus possessing significant practical value.

[0145] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tooling for integrated edge cutting of a power battery pack, characterized in that, Including horizontally distributed tooling base plates (7); A main support (700) is vertically installed on the rear side of the top right end of the tooling base plate (7). The upper end of the main support (700) is pivotally connected to the rear end of a battery outer membrane fixing shaft (2); At the front and rear ends of the battery outer membrane fixing shaft (2), there is an outer membrane fixing block (3) and an outer membrane limiting block (14). The outer wall of the battery outer membrane fixing shaft (2) is used to fit a battery outer membrane roll (100). The battery outer film roll (100) is located between the outer film fixing block (3) and the outer film limiting block (14); On the left side of the battery outer membrane fixing shaft (2), there is a longitudinally distributed outer membrane guide shaft (5). The installation height of the outer membrane guide shaft (5) is lower than the installation height of the battery outer membrane fixing shaft (2); On the left side of the outer membrane guide shaft (5), there is a longitudinally distributed first linear guide rail (6). On the slider of the first linear guide (6), there are horizontally distributed cutting slide blocks (12). The left end of the cutter sliding block (12) protrudes from the left side of the first linear guide (6); At the left end of the cutter sliding block (12), there is a vertically distributed blade fixing block (13). The bottom of the blade fixing block (13) is provided with longitudinally distributed blades; On the top of the tooling base plate (7), directly below the blade, there are longitudinally distributed cutting positioning blocks (8). A battery positioning block (9) is set on the left side of the cutting positioning block (8). The top of the battery positioning block (9) is used to insert and position the battery. On the top of the tooling base plate (7), at the positions of the front and rear sides of the battery positioning block (9), there is a second linear guide rail (10) distributed laterally. The sliders at the top of the two second linear guides (10) are respectively connected to the bottom of the front and rear ends of the longitudinally distributed film extrusion brackets (11); The top plate of the coating extrusion bracket (11) is provided with a rotatable, cylindrical coating extrusion roller (1101). The top plate of the coating extrusion bracket (11) is provided with a longitudinally distributed coating extrusion roller mounting plate (1102). At the front and rear ends of the bottom of the coating extrusion roller mounting plate (1102), a coating extrusion roller limiting block (1103) is vertically installed. The two film extrusion roller limiting blocks (1103) are pivotally connected to one side of the opposite side of the film extrusion roller limiting blocks (1103). The front and rear ends of the cutter sliding block (12) are respectively provided with a transversely distributed transverse position adjustment guide groove (1201); the cutter sliding block (12) is threadedly fixed to the threaded hole reserved on the slider of the first linear guide (6) by a screw passing through the transverse position adjustment guide groove (1201).

2. The integrated tooling for edge trimming of the power battery pack as described in claim 1, characterized in that, A battery positioning groove (901) is provided on the top of the battery positioning block (9). The battery positioning groove (901) is used to insert and position the battery. The battery positioning block (9) has a battery insertion / removal notch (902) on the front side of the battery positioning groove (901).

3. The integrated tooling for edge trimming of the power battery pack as described in claim 1, characterized in that, At the upper end of the main support (700), there is a linkage coil connection through hole (701). A battery outer membrane fixing shaft connecting plate (101) is pivotally connected to the linkage coil connecting through hole (701). The rear side of the battery outer membrane fixing shaft connecting plate (101) is connected to the front center position of a linkage coil (1); The front center mounting hole of the battery outer membrane fixing shaft connecting plate (101) is connected to the rear end of the battery outer membrane fixing shaft (2).

4. The integrated tooling for edge trimming of the power battery pack as described in claim 3, characterized in that, At the lower end of the main bracket (700), directly below the linkage coil connection through hole (701), there is also a waste material fixing shaft connection through hole (702). A circular waste material fixing shaft timing pulley is provided on the rear side of the waste material fixing shaft connecting through hole (702); The rear end of a waste fixing shaft (4) passes vertically through the waste fixing shaft connecting through hole (702) and is connected to the center hole of the waste fixing shaft synchronous pulley; The linkage coil (1) is linked to the synchronous pulley of the waste material fixed shaft through the synchronous drive belt (102).

5. The integrated tooling for edge trimming of the power battery pack as described in claim 4, characterized in that, A bearing mounting plate (401) is provided on the rear side of the waste material fixing shaft connecting through hole (702). The rear end of the waste material fixing shaft (4) passes vertically through the waste material fixing shaft connecting through hole (702) and the reserved through hole on the bearing mounting plate (401) from front to back, and then connects to the center hole of the waste material fixing shaft synchronous pulley.

6. The integrated tooling for edge trimming of the power battery pack as described in claim 1, characterized in that, Three outer membrane roll clamps (201) are arranged around the outer wall of the battery outer membrane fixing shaft (2). The installation height of the first linear guide (6) is higher than the installation height of the outer membrane guide (5).

7. The integrated tooling for edge trimming of the power battery pack as described in claim 1, characterized in that, The front and rear ends of the outer membrane guide shaft (5) are respectively pivotally connected to the upper end of an outer membrane guide shaft support (501); The bottom of the two outer membrane guide shaft brackets (501) is fixedly set at the front and rear ends of the top of the tooling base plate (7); The bottom front and rear ends of the first linear guide (6) are respectively connected to the top of a first linear guide bracket (601); The bottom of the two first linear guide brackets (601) is fixedly set at the front and rear ends of the top of the tooling base plate (7).

8. The integrated tooling for cutting the edge of the power battery pack as described in any one of claims 1 to 7, characterized in that, The left side wall of the cutter sliding block (12) has a threaded hole at each of its front and rear ends; The blade fixing block (13) is provided with a longitudinally distributed height adjustment guide groove (1301) at the position corresponding to the two threaded holes. The blade fixing block (13) is threadedly fixed to the corresponding threaded hole on the cutter sliding block (12) by a screw passing through the height adjustment guide groove (1301).

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