Battery cell manufacturing apparatus, battery cell manufacturing method, and battery

Abstract

The application belongs to the technical field of battery manufacturing equipment, and particularly relates to a battery cell manufacturing device, a battery cell manufacturing method and a battery. The battery cell manufacturing device comprises a conveying device for conveying an aluminum plastic film in a first direction; a pressing device arranged above the conveying device, the pressing device being provided with a lifting assembly for carrying a bare battery cell limiting block and pressing the bare battery cell limiting block to the surface of the aluminum plastic film; a feeding assembly for feeding the bare battery cell limiting block to the lifting assembly; and a heating assembly arranged below the conveying device, the heating assembly being used for heating the aluminum plastic film to melt the aluminum plastic film and connect the bare battery cell limiting block and the aluminum plastic film into one. The application improves the manufacturing process and device of the battery cell, connects the bare battery cell limiting block and the aluminum plastic film into one through the heating and melting of the aluminum plastic film, does not need to punch the aluminum plastic film, can effectively prevent the electrochemical corrosion caused by the damage of the PP layer of the aluminum plastic film due to the punching, and is beneficial to improving the service life and safety performance of the battery cell.

Description

Technical Field

[0001] This invention belongs to the field of battery manufacturing equipment technology, specifically relating to cell manufacturing equipment, cell manufacturing methods, and batteries. Background Technology

[0002] Soft-pack batteries are one of the most common battery types in the new energy field. In the manufacturing process of soft-pack batteries, to facilitate cell positioning during encapsulation by setting bare cell limiting blocks on the aluminum-plastic film, the film is currently typically formed using die stamping. However, in existing processes, the stamping process easily leads to damage to the PP layer of the aluminum-plastic film, causing electronic pathways to form and making it susceptible to electrochemical corrosion, thus affecting the lifespan and safety performance of the cells. Therefore, existing manufacturing processes and equipment have drawbacks that negatively impact battery products. Summary of the Invention

[0003] In view of this, in order to improve at least one of the above-mentioned problems existing in the prior art, the present invention provides a cell manufacturing apparatus, a cell manufacturing method and a battery.

[0004] The first aspect of the present invention provides a battery cell manufacturing apparatus, comprising: a conveying device for conveying an aluminum-plastic film along a first direction; a pressing device disposed above the conveying device, the pressing device having a lifting assembly for carrying a bare battery cell limiting block and pressing the bare battery cell limiting block down onto the surface of the aluminum-plastic film; a feeding assembly disposed to the side of the pressing device for conveying the bare battery cell limiting block onto the lifting assembly; and a heating assembly disposed below the conveying device for heating the aluminum-plastic film to melt it and connect it integrally with the bare battery cell limiting block.

[0005] In one feasible implementation, the pressing device includes: a lifting guide rail extending vertically; a lifting assembly slidably connected to the lifting guide rail, the lifting assembly having a vertically penetrating limiting groove, the shape of the limiting groove being adapted to the bare battery cell limiting block, the bare battery cell limiting block being able to pass through the limiting groove and contact the surface of the aluminum-plastic film; and a lifting drive mechanism, which is connected to the lifting assembly to drive the lifting assembly to move up and down along the lifting guide rail.

[0006] In one feasible implementation, the lifting assembly includes: a lifting platform slidably connected to a lifting guide rail, the lifting platform having a limiting groove; a clamping mechanism disposed on the lifting platform and located on both sides of the limiting groove, the clamping mechanism being used to clamp bare cell limiting blocks located within the limiting groove; and a receiving mechanism disposed below the lifting platform and opposite to the limiting groove, the receiving mechanism being used to receive bare cell limiting blocks located within the limiting groove, the receiving mechanism being movably connected to the lifting platform and used to perform lifting and lowering movements relative to the lifting platform and to move along a first direction.

[0007] In one feasible implementation, a first through hole is provided on the lifting platform; the receiving mechanism includes: a fixing block, disposed on the lifting platform and connected to the edge of the first through hole, with a first slide rail extending vertically on the side of the fixing block facing the first through hole; a first slider, passing through the first through hole and slidably connected to the first slide rail; a first driving mechanism, drivenly connected to the first slider to drive the first slider to slide along the first slide rail; a receiving plate, disposed below the lifting platform, with a second slide rail extending in a first direction on the receiving plate, and the bottom of the first slider slidably connected to the second slide rail; and a second driving mechanism, drivenly connected to the receiving plate to drive the receiving plate to slide relative to the first slider in the first direction.

[0008] In one feasible implementation, the lifting platform is provided with third slide rails on both sides of the limiting groove; the clamping mechanism includes: at least two clamping members, respectively provided on both sides of the limiting groove, and slidably connected to the third slide rails on both sides of the limiting groove; a third driving mechanism, which is connected to the clamping members in a transmission manner, and the third driving mechanism is used to drive the clamping members to slide along the third slide rails to clamp or release the bare cell limiting block in the limiting groove.

[0009] In one feasible implementation, the limiting groove is a frame-shaped structure adapted to the bare cell limiting block, with the opening side of the frame-shaped structure facing the first direction; there are multiple clamping mechanisms, and at least one clamping mechanism is provided on each side of the frame-shaped structure.

[0010] In one feasible implementation, the heating assembly includes: a heater located below the conveying device and opposite to the position of the bare cell limiting block on the lifting assembly, the heater being used to heat the aluminum-plastic film on the conveying device; and a heating lifting mechanism located below the heater and connected to the heater to drive the heater to move vertically up and down.

[0011] In one feasible implementation, the feeding component includes: a feeding platform, located on one side of the pressing device, which carries bare cell limiting blocks; a positioning mechanism, corresponding to the feeding platform, which collects the positioning information of the bare cell limiting blocks on the feeding platform; and a transfer mechanism, corresponding to the feeding platform and communicatively connected to the positioning mechanism, which grabs the bare cell limiting blocks on the feeding platform according to the positioning information and places the bare cell limiting blocks on the lifting component.

[0012] In one feasible implementation, the transfer mechanism includes: a transfer support member having a feeding horizontal guide rail extending toward the lifting assembly; a transfer lifting mechanism slidably connected to the feeding horizontal guide rail; and a gripping mechanism connected to the transfer lifting mechanism for gripping the bare cell limiting block.

[0013] The second aspect of the present invention provides a method for manufacturing a battery cell, applied to the battery cell manufacturing equipment described in any of the first aspects above. The battery cell manufacturing method includes the following steps:

[0014] The conveying device transports the aluminum-plastic film to the target position below the pressing device;

[0015] The feeding assembly moves the bare battery cell limit block to be processed onto the lifting assembly of the pressing device;

[0016] The lifting assembly presses the bare battery cell limiting block down onto the surface of the aluminum-plastic film;

[0017] The heating component heats the aluminum-plastic film at the target location, causing the aluminum-plastic film to melt and connect with the bare battery cell limiting block as a whole;

[0018] The conveying device continues to convey the aluminum-plastic film and cuts the aluminum-plastic film after it is connected to the bare battery cell limiting block to form a battery cell coating film.

[0019] In one feasible implementation, the lifting assembly includes a lifting platform, a clamping mechanism, and a receiving mechanism; the lifting platform has a vertically penetrating limiting groove, and the clamping mechanism is located on both sides of the limiting groove; the receiving mechanism is located below the lifting platform and opposite to the limiting groove, and the receiving mechanism is used to perform lifting and lowering movements relative to the lifting platform and to move along a first direction.

[0020] Steps: The feeding assembly moves the bare battery cell limit block to be processed onto the lifting platform of the pressing device, including:

[0021] The feeding component picks up the bare cell limit block to be processed and transports it into the limit groove, and then places the bare cell limit block on the receiving mechanism;

[0022] The feeding component leaves the lifting platform;

[0023] The clamping mechanism clamps the bare battery cell limit block.

[0024] In one feasible implementation, the step of: the lifting assembly pressing the bare cell limiting block down onto the surface of the aluminum-plastic film includes:

[0025] The receiving mechanism moves along the first direction to separate from the bare cell limiting block, and then rises to a preset height;

[0026] The lifting platform descends so that the bottom of the clamped bare cell limiting block contacts the surface of the aluminum-plastic film below.

[0027] In one feasible implementation, the heating assembly includes a heater and a heating lifting mechanism, wherein the heater is connected to the heating lifting mechanism and is positioned relative to the position of the bare cell limiting block on the lifting assembly;

[0028] Steps: The heating component heats the aluminum-plastic film at the target location, melting the film and connecting it to the bare battery cell limiting block, including:

[0029] The heating lifting mechanism drives the heater to rise to the target heating height;

[0030] The heater heats the aluminum-plastic film, causing the area of ​​the aluminum-plastic film corresponding to the bare battery cell limiting block to melt and bond with the bare battery cell as a whole;

[0031] The lifting assembly disengages from the bare battery cell limiting block and rises to its initial position;

[0032] The heating lifting mechanism drives the heater to descend, and the conveying device continues to convey the aluminum-plastic film along the first direction.

[0033] The third aspect of the present invention provides a battery, including a cell, the cell being manufactured by the cell manufacturing method of any one of the second aspects described above.

[0034] The beneficial effects of the above-mentioned technical solution of the present invention are reflected in:

[0035] The manufacturing process and equipment for the battery cells have been improved. By coordinating the feeding assembly, pressing device, and conveying device, the bare battery cell limiting block can be accurately positioned with the target position on the surface of the aluminum-plastic film. The bare battery cell limiting block is connected to the aluminum-plastic film by heating and melting the film. There is no need to perform a stamping operation on the aluminum-plastic film, which can effectively prevent electrochemical corrosion caused by damage to the PP layer of the aluminum-plastic film due to stamping. This is beneficial to improving the service life and safety performance of the battery cells. Attached image description:

[0036] Figure 1 The figure shown is a perspective view of a battery cell manufacturing device according to an embodiment of the present invention.

[0037] Figure 2 The diagram shown is a schematic view of a battery cell manufacturing apparatus provided in an embodiment of the present invention from the opposite direction of the first direction.

[0038] Figure 3 The image shown is a three-dimensional schematic diagram of a battery cell manufacturing device provided in one embodiment of the present invention from another perspective.

[0039] Figure 4 The figure shown is a schematic block diagram of a pressing device provided in one embodiment of the present invention.

[0040] Figure 5 The figure shown is a side view of a lifting assembly provided in an embodiment of the present invention.

[0041] Figure 6 The image shown is a top view of a lifting assembly provided in one embodiment of the present invention.

[0042] Figure 7 The image shown is a bottom view of a lifting assembly provided in one embodiment of the present invention.

[0043] Figure 8 The image shown is a top view of a battery cell manufacturing apparatus according to an embodiment of the present invention.

[0044] Figure 9 As shown Figure 8 A top view of part of the structure of the battery cell manufacturing equipment.

[0045] Figure 10 The image shown is a side view of a battery cell manufacturing apparatus according to an embodiment of the present invention.

[0046] Figure 11 The diagram shown is a schematic diagram of a battery cell before packaging according to an embodiment of the present invention.

[0047] Figure 12 The diagram shown is a schematic flow chart of a battery cell manufacturing method according to an embodiment of the present invention.

[0048] Figure 13 As shown Figure 12 A schematic diagram of the specific steps in step S200 of the battery cell manufacturing method.

[0049] Figure 14 As shown Figure 12 A schematic diagram of the specific steps in step S300 of the battery cell manufacturing method.

[0050] Figure 15 As shown Figure 12 A schematic diagram of the specific steps in step S400 of the battery cell manufacturing method.

[0051] Figure 16 The diagram shown is a schematic block diagram of a battery provided in one embodiment of the present invention.

[0052] Figure 17 The table shown is a comparison list of parameters for two battery cells manufactured using different processes, provided in one embodiment of the present invention.

[0053] In the above-mentioned figures, arrow F1 indicates the first direction. Detailed Implementation

[0054] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, top, bottom, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0055] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] Application Overview

[0058] In recent years, with the rapid development of battery technology, various types of batteries have seen rapid development and widespread application. Pouch batteries are one of the most common battery types, typically using an aluminum-plastic film to encapsulate the bare cells. During the manufacturing process of pouch batteries, positioning blocks for the bare cells are usually placed on the aluminum-plastic film to facilitate cell positioning during encapsulation. In existing processes, the aluminum-plastic film is usually formed by die stamping; however, this stamping process can easily damage the PP layer of the aluminum-plastic film, leading to the formation of electronic pathways and making it susceptible to electrochemical corrosion, thus affecting the lifespan and safety performance of the cells. Therefore, improvements to the relevant processes and equipment in battery manufacturing are necessary.

[0059] The following provides some embodiments of the cell manufacturing equipment, cell manufacturing method and battery in the technical solution of the present invention.

[0060] In an embodiment of the first aspect of the present invention, a cell manufacturing apparatus 100 is provided, such as... Figure 1 and Figure 2 As shown, the battery cell manufacturing equipment 100 includes a conveying device 1, a pressing device 2, a feeding assembly 3, and a heating assembly 4. The conveying device 1 conveys an aluminum-plastic film 510 along a first direction. The pressing device 2 is positioned above the conveying device 1 and includes a lifting assembly 22. The lifting assembly 22 carries a bare battery cell limiting block 520 and presses the bare battery cell limiting block 520 down onto the surface of the aluminum-plastic film 510. The feeding assembly 3 is positioned to the side of the pressing device 2 and can transport the bare battery cell limiting block 520 onto the lifting assembly 22. The heating assembly 4 is positioned below the conveying device 1 and can heat the aluminum-plastic film 510, causing it to fuse with the bare battery cell limiting block 520 on its surface, facilitating the limiting of the bare battery cell by the limiting block 520 during subsequent packaging operations.

[0061] In production applications, the conveying device 1, the pressing device 2, the feeding assembly 3, and the heating assembly 4 can perform corresponding actions according to the instructions of the matching controller or control system to operate each stage of the production process. Additionally, the aluminum-plastic film 510 can be conveyed directly as a whole sheet of film, such as... Figure 1 In the example, after being connected to the bare cell limiting block 520, a single cell coating film is formed by a cutting operation; of course, the aluminum-plastic film 510 can also be cut into the size of a single cell coating film in advance, and then connected to the bare cell limiting block 520 via the conveying device 1.

[0062] It is understandable that in the existing process, the bare cell limiting block is formed by stamping on an aluminum-plastic film. The PP layer of the aluminum-plastic film is easily damaged, and there is a risk of electrochemical corrosion during use.

[0063] The battery cell manufacturing equipment 100 in this embodiment improves upon existing manufacturing processes and equipment. By cooperating with the feeding component 3, the pressing device 2, and the conveying device 1, the bare battery cell limiting block can be accurately positioned with the target position on the surface of the aluminum-plastic film. The bare battery cell limiting block is connected to the aluminum-plastic film by heating and melting the aluminum-plastic film. There is no need to perform a stamping operation on the aluminum-plastic film, which can effectively prevent electrochemical corrosion caused by damage to the PP layer of the aluminum-plastic film due to stamping. This is beneficial to improving the service life and safety performance of the battery cell.

[0064] In a further embodiment of the present invention, such as Figure 2 , Figure 3 and Figure 4As shown, the pressing device 2 includes a lifting guide rail 21, a lifting assembly 22, and a lifting drive mechanism 23. The lifting guide rail 21 extends vertically, the lifting assembly 22 is slidably connected to the lifting guide rail 21, and the lifting drive mechanism 23 is drively connected to the lifting assembly 22 to drive the lifting assembly 22 to slide up and down along the lifting guide rail 21. One or more lifting guide rails 21 can be provided, for example... Figure 3 The four shown are: The lifting drive mechanism 23 can specifically be a servo motor. The lifting assembly 22 has a vertically penetrating limiting groove 2211. The shape of the limiting groove 2211 is adapted to the bare cell limiting block 520 and suitable for the bare cell limiting block 520 to pass through. When the feeding assembly 3 transports the bare cell limiting block 520 from the waiting area into the limiting groove 2211 on the lifting assembly 22, the lifting assembly 22 can drive the bare cell limiting block 520 to descend, causing it to pass through the limiting groove 2211 and press down onto the surface of the aluminum-plastic film 510 below. The limiting groove 2211 limits the position of the bare cell limiting groove 2211 pressing down onto the aluminum-plastic film 510, ensuring that the bare cell limiting groove 2211 is accurately positioned at the target location on the aluminum-plastic film 510 and preventing positional deviation.

[0065] In addition, such as Figure 2 In the example, when multiple lifting guide rails 21 are provided, the pressing device 2 may also include a lifting top plate 24, which is fixedly connected to the top of the multiple lifting guide rails 21. This can enhance the connection strength and also limit the lifting stroke of the lifting assembly 22.

[0066] Furthermore, in a specific implementation, such as Figure 3 and Figure 5 As shown, the lifting assembly 22 includes a lifting platform 221, a clamping mechanism 222, and a receiving mechanism 223. The lifting platform 221 is slidably connected to the lifting guide rail 21. Preferably, the lifting platform 221 can be adopted as follows: Figure 3The diagram shows a plate-like structure. A limiting groove 2211 is provided on the lifting platform 221, the specific position of which corresponds to the target position of the bare battery cell limiting block 520 on the aluminum-plastic film 510. A clamping mechanism 222 is installed on the lifting platform 221 and located on both sides of the limiting groove 2211. When the bare battery cell limiting block 520 is located in the limiting groove 2211, it can be clamped by the clamping mechanism 222 to facilitate subsequent pressing operations. A receiving mechanism 223 is installed below the lifting platform 221 and is positioned opposite to the limiting groove 2211. When the bare battery cell limiting block 520 is moved into the limiting groove 2211, the bottom of the bare battery cell limiting block 520 can contact the receiving mechanism 223 to support it. The receiving mechanism 223 is adapted to move up and down relative to the lifting platform 221 and along the first direction. When the bare cell limiting block 520 is pressed down, the clamping mechanism 222 clamps the bare cell limiting block 520 from both sides of the limiting groove 2211. At this time, the receiving mechanism 223 moves along the first direction to separate from the bare cell limiting block 520, and the receiving mechanism 223 rises to the target height to prevent interference with the pressing operation. The bottom end of the bare cell limiting block 520 is located below the lifting platform 221 and is pressed down onto the surface of the aluminum-plastic film 510 under the drive of the lifting platform 221.

[0067] Furthermore, such as Figure 5 , Figure 6 and Figure 7 As shown, the receiving mechanism 223 specifically includes a fixed block 2231, a first slider 2233, a first driving mechanism, a receiving plate 2234, and a second driving mechanism. A first through hole 2212 is provided on the lifting platform 221. The fixed block 2231 is fixedly connected to the lifting platform 221 and located at the edge of the first through hole 2212. A first slide rail 2232 extending vertically is provided on the side of the fixed block 2231 facing the first through hole 2212. The first slider 2233 passes through the first through hole 2212 and is slidably connected to the first slide rail 2232 on the fixed block 2231. The first driving mechanism is drively connected to the first slider 2233 and is used to drive the first slider 2233 to slide along the first slide rail 2232. The number of first slide rails 2232 can be one or more, for example... Figure 6The diagram shows two parallel first slide rails 2232. A first slider 2233 has a structure that mates with the first slide rails 2232 for sliding connection. A receiving plate 2234 is located below the lifting platform 221. A second slide rail 2235 is provided on the surface of the receiving plate 2234 facing the lifting platform 221. The second slide rail 2235 extends along a first direction and is slidably connected to the bottom of the first slider 2233. A second drive mechanism is connected to the receiving plate 2234 for driving the receiving plate 2234 to slide relative to the first slider 2233 along the first direction. The number of second slide rails 2235 can be one or more. The bottom of the first slider 2233 has a structure that mates with the second slide rail 2235 for sliding connection.

[0068] In this way, the receiving plate 2234 can move up and down relative to the lifting platform 221, slide along the first direction relative to the lifting platform 221, and move up and down together with the lifting platform 221. When the bare cell limiting block 520 is transported into the limiting groove 2211, the receiving plate 2234 first supports the bare cell limiting block 520 from below; after the bare cell limiting block 520 is clamped by the clamping mechanism 222, the receiving plate 2234 first slides along the first direction and separates from the bare cell limiting block 520, and then rises vertically to the target height, providing space for the bare cell limiting block 520 to press down; then the lifting assembly 22 slides down as a whole, pressing the bare cell limiting block 520 down onto the surface of the aluminum-plastic film 510.

[0069] Furthermore, such as Figure 5 and Figure 6 As shown, the lifting platform 221 has third slide rails 2113 on both sides of the limiting groove 2211 to cooperate with the clamping mechanism 222. Specifically, the clamping mechanism 222 includes at least two clamping members 2221, which are respectively disposed on both sides of the limiting groove 2211 and are slidably connected to the corresponding third slide rails 2113. The third drive mechanism is driven to the clamping members 2221 and is used to drive the clamping members 2221 to slide along the third slide rails 2113. By driving the clamping members 2221 on both sides of the limiting groove 2211 to slide in opposite directions, the bare cell limiting block 520 in the limiting groove 2211 is clamped or released by the clamping members 2221 on both sides.

[0070] More preferably, such as Figure 6 In the example, the limiting groove 2211 is specifically shaped as a frame structure with one side opening adapted to the bare cell limiting block 520, and the opening side of the frame structure faces the first direction. Correspondingly, the lifting platform 221 is provided with multiple clamping mechanisms 222, for example... Figure 6The diagram shows three clamping mechanisms 222, each corresponding to one side of the limiting groove 2211. That is, each of the three sides of the frame structure of the limiting groove 2211 has a corresponding clamping mechanism 222. When the bare cell limiting block 520 extends into the limiting groove 2211, the three clamping mechanisms 222 can clamp the three side walls of the bare cell limiting block 520 respectively, making the clamping operation more stable and secure. Each clamping element 2221 can be configured as a strip structure with a certain width to increase the contact area when clamping the bare cell limiting block 520, further improving clamping stability and making the force on the bare cell limiting block 520 more even.

[0071] In a further embodiment of the present invention, such as Figure 2 , Figure 8 and Figure 9 As shown, the heating assembly 4 includes a heater 41 and a heating lifting mechanism 42. The heater 41 is located below the conveying device 1 and is connected to the top of the heating lifting mechanism 42. It can move vertically up and down under the drive of the heating lifting mechanism 42 to adjust the distance between the heater 41 and the aluminum-plastic film 510. The heater 41 is positioned opposite to the bare battery cell limiting block 520 on the lifting assembly 22, for example, opposite to the limiting groove 2211 of the lifting assembly 22. When the bare battery cell limiting block 520 in the limiting groove 2211 is pressed onto the surface of the aluminum-plastic film 510 under the drive of the lifting assembly 22, the heater 41 can heat the corresponding position on the aluminum-plastic film 510 to raise the temperature of the aluminum-plastic film 510 to the melting temperature, and then bond it to the bare battery cell limiting block 520 by thermal melting, thus completing the connection and fixing operation between the bare battery cell limiting block 520 and the aluminum-plastic film 510.

[0072] The number of heaters 41 can be set to one or more, for example Figure 9 The three heaters shown are each arranged corresponding to a side wall of the bare cell limiting block 520 to heat the corresponding driving area on the aluminum-plastic film 510. This allows for more uniform heating of different areas and prevents uneven heating in local areas from affecting the adhesion to the bare cell limiting block 520.

[0073] In a further embodiment of the present invention, such as Figures 1 to 3 As shown, the loading assembly 3 includes a loading platform 31, a positioning mechanism 32, and a transfer mechanism 33. The loading platform 31 is located on one side of the pressing device 2 and serves as a waiting area for the bare battery cell limiting blocks 520 to be transported. The positioning mechanism 32 is correspondingly arranged with the loading platform 31, for example... Figure 3As shown, the positioning mechanism 32, positioned above and to the side of the loading platform 31, can collect the positioning information of the bare cell limiting block 520 on the loading platform 31. The transfer mechanism 33 is correspondingly arranged with the loading platform 31 and is communicatively connected to the positioning mechanism 32 to receive the positioning information of the bare cell limiting block 520 obtained by the positioning mechanism 32. Based on the positioning information, the transfer mechanism 33 grasps the bare cell limiting block 520 on the loading platform 31 and places it on the lifting assembly 22 of the pressing device 2, completing the loading operation. Preferably, the positioning mechanism 32 can specifically employ a CCD device to acquire the positioning information of the bare cell limiting block 520 through visual images, resulting in higher positioning accuracy.

[0074] Furthermore, such as Figure 2 and Figure 3 As shown, the transfer mechanism 33 specifically includes a transfer support 331, a transfer lifting mechanism 332, and a gripping mechanism 333. The transfer support 331 is provided with a horizontal feeding guide rail, which extends towards the lifting assembly 22. The transfer lifting mechanism 332 is slidably connected to the horizontal feeding guide rail, and the gripping mechanism 333 is connected to the transfer lifting mechanism 332. The gripping mechanism 333 is used to grip the bare cell limiting block 520 on the feeding platform 31 and place the bare cell limiting block 520 on the lifting assembly 22. The gripping mechanism 333 can move horizontally along the horizontal feeding guide rail under the drive of the transfer lifting mechanism 332, and can also move up and down under the drive of the transfer lifting mechanism 332 to adjust the position of the gripping mechanism 333, achieving reciprocating motion and repeating the gripping and feeding operation multiple times. The transfer mechanism 33 in this embodiment can accurately and efficiently grip and feed the bare cell limiting block 520, making it suitable for large-scale assembly line production operations.

[0075] It should be noted that in practical applications, such as Figure 3 and Figure 10 As shown, the conveying device 1 can be equipped with mechanisms such as conveying brackets 11, roller mechanisms 12, conveying limiters 13, and conveying grippers 14, according to specific production needs. The conveying brackets 11 can be arranged in two rows, such as... Figure 3 In the example shown, two rows of conveyor supports 11 extend along a first direction; multiple roller mechanisms 12 are spaced apart at the top of the conveyor supports 11 along the first direction, and the aluminum-plastic film 510 is placed on the surface of the roller mechanism 12. When the aluminum-plastic film 510 moves along the first direction, a rolling engagement is formed between the roller mechanism 12 and the aluminum-plastic film 510, which can effectively reduce friction; the conveyor gripper 14 is located at one end of the conveyor support 11 and is used to clamp the aluminum-plastic film 510 and pull the aluminum-plastic film 510 to move along the first direction. The conveyor limiting member 13 can be specifically set near the pressing device 2, for example... Figure 3The pressing device 2 shown in the figure is located at the upstream and downstream positions in the first direction, and at opposite positions on both sides of the aluminum-plastic film 510. The conveying limiting member 13 is provided with a gap groove on the side facing the aluminum-plastic film 510. The opening side of the gap groove is open at both ends in the first direction, and the edge of the aluminum-plastic film 510 passes through the gap groove. During the movement of the aluminum-plastic film 510, the gap groove limits the aluminum-plastic film 510 in the lateral and height directions, preventing the aluminum-plastic film 510 from shifting and affecting the connection and fixation with the bare cell limiting block 520.

[0076] Additionally, it should be emphasized that the operations in the above embodiments allow the aluminum-plastic film 510 and the bare cell limiting block 520 to be connected as a single unit, forming a cell coating film 500, which is then used to wrap the bare cell 611, as shown below. Figure 11 In the example shown, once the encapsulation operation is completed, the battery cell 610 is formed. During the encapsulation process, placing the bare battery cell 611 within the defined area of ​​the bare battery cell limiting block 520 can prevent the bare battery cell 611 from shifting position, thereby limiting the position of the bare battery cell 611 and improving the efficiency and accuracy of the encapsulation operation.

[0077] An embodiment of the second aspect of the present invention provides a method for manufacturing a battery cell, which is applied to the battery cell manufacturing equipment in any of the embodiments of the first aspect described above. For example... Figure 1 and Figure 12 As shown, the cell manufacturing method includes:

[0078] Step S100: The conveying device conveys the aluminum-plastic film to the target position below the pressing device;

[0079] Step S200: The feeding assembly moves the bare cell limit block to be processed onto the lifting assembly of the pressing device;

[0080] Step S300: The lifting assembly presses the bare cell limiting block down onto the surface of the aluminum-plastic film;

[0081] Step S400: The heating component heats the aluminum-plastic film at the target location, causing the aluminum-plastic film to melt and connect with the bare battery cell limiting block as a whole;

[0082] Step S500: The conveying device continues to convey the aluminum-plastic film and cuts the aluminum-plastic film after it is connected to the bare cell limiting block to form a cell coating film.

[0083] In this embodiment, step S100 involves conveying the aluminum-plastic film to the target position to prepare for the connection operation between the aluminum-plastic film and the bare cell limiting block; step S200 involves transferring the bare cell limiting block to be processed onto the lifting assembly of the pressing device to complete the loading operation, so that the bare cell limiting block is opposite to the aluminum-plastic film; step S300 involves pressing the bare cell limiting block down onto the surface of the aluminum-plastic film, so that the bare cell limiting block contacts the target position on the surface of the aluminum-plastic film; then step S400 involves heating the aluminum-plastic film, and connecting it to the bare cell limiting block by thermal melting, thus achieving the connection and fixation between the bare cell limiting block and the aluminum-plastic film; step S500 involves conveying the aluminum-plastic film connected to the bare cell limiting block to the corresponding unloading area for cutting, forming a single cell coating film; subsequently, only the cell coating film and the bare cell need to be encapsulated to form a single product cell, completing the cell assembly and manufacturing process.

[0084] It should be noted that in practical applications, the battery cell manufacturing equipment 100 can be controlled by a matching controller or control system, so that the conveying device 1, pressing device 2, feeding component 3, heating component 4, etc. of the battery cell manufacturing equipment 100 cooperate with each other to execute the specific steps of the battery cell manufacturing method in this embodiment, and realize the production and manufacturing of battery cells.

[0085] Furthermore, such as Figures 3 to 7 As shown, in the battery cell manufacturing equipment 100, the lifting assembly 22 is provided with a lifting platform 221, a clamping mechanism 222 and a receiving mechanism 223; the lifting platform 221 is provided with a vertically penetrating limiting groove 2211, and the clamping mechanism 222 is provided on both sides of the limiting groove 2211; the receiving mechanism 223 is provided below the lifting platform 221 and at a position opposite to the limiting groove 2211, and the receiving mechanism 223 is used to perform lifting and lowering movements relative to the lifting platform 221 and to move along a first direction.

[0086] Correspondingly, such as Figure 12 and Figure 13 As shown, step S200 of the above-mentioned cell manufacturing method specifically includes:

[0087] Step S210: The feeding component picks up the bare cell limit block to be processed and transports it into the limit groove, and makes the bare cell limit block bear on the receiving mechanism;

[0088] Step S220: The feeding component leaves the lifting platform;

[0089] Step S230: The clamping mechanism clamps the bare cell limit block.

[0090] In this embodiment, step S210 involves transporting the bare battery cell limiting block into the limiting groove on the lifting platform and placing it on the receiving mechanism to complete the loading operation. The limiting groove limits the bare battery cell limiting block, ensuring it is aligned with the target position on the aluminum-plastic film below. The receiving mechanism provides intermediate support for the bare battery cell limiting block. Steps S220 to S230 involve clamping the bare battery cell limiting block with a clamping mechanism after the loading mechanism leaves the lifting platform, fixing it to the lifting platform. This ensures the bare battery cell limiting block remains in its current position after separation from the receiving mechanism and allows it to descend with the lifting platform during the pressing process, reaching the target position on the aluminum-plastic film surface. These steps maintain the bare battery cell limiting block's current relative position, preventing positional deviation.

[0091] Furthermore, such as Figures 12 to 14 As shown, step S300 of the above-mentioned cell manufacturing method specifically includes:

[0092] Step S310: The receiving mechanism moves along the first direction to separate from the bare cell limiting block, and then rises to a preset height;

[0093] Step S320: The lifting platform is lowered so that the bottom of the bare cell limiting block in the clamped state contacts the surface of the aluminum-plastic film below.

[0094] In this embodiment, after the bare cell limiting block is clamped by the clamping mechanism, step S310 causes the receiving mechanism to move to a position where it is separated from the bare cell limiting block and will not interfere with it, so as to provide space for the bare cell limiting block to contact the aluminum-plastic film; step S320 causes the bare cell limiting block to be pressed down to the target position of the aluminum-plastic film, so that the bare cell limiting block and the aluminum-plastic film can contact each other, so as to facilitate the subsequent connection operation between the aluminum-plastic film and the bare cell limiting block.

[0095] Furthermore, such as Figure 2 As shown, the heating assembly of the battery cell manufacturing equipment 100 includes a heater 41 and a heating lifting mechanism 42. The heater 41 is connected to the heating lifting mechanism 42 and is positioned relative to the position of the bare battery cell limiting block on the lifting assembly 22.

[0096] Correspondingly, such as Figures 12 to 15 As shown, step S400 of the above-mentioned cell manufacturing method specifically includes:

[0097] Step S410: The heating lifting mechanism drives the heater to rise to the target heating height;

[0098] Step S420: The heater heats the aluminum-plastic film, causing the area of ​​the aluminum-plastic film corresponding to the bare battery cell limiting block to melt and bond with the bare battery cell as a whole;

[0099] Step S430: The lifting assembly disengages from the bare cell limiting block and rises to the initial position;

[0100] Step S440: The heating lifting mechanism drives the heater to descend, and the conveying device continues to convey the aluminum-plastic film along the first direction.

[0101] In this embodiment, step S410 adjusts the height of the heater to maintain the required distance between the heater and the aluminum-plastic film; step S420 heats and melts the aluminum-plastic film, bonding it to the bare cell limiting block; steps S430 and S440 restore the lifting assembly to its initial position to facilitate pressing down the next bare cell limiting block, while simultaneously lowering the heater to continue conveying the connected aluminum-plastic film along the first direction for subsequent operations.

[0102] In a third aspect of the invention, a battery 600 is also provided, such as Figure 16 As shown, the battery 600 includes a cell 610, and the cell 610 is manufactured by the cell manufacturing method in any of the embodiments of the second aspect described above.

[0103] Furthermore, such as Figure 11 As shown, the battery cell 610 includes a bare battery cell 611 and a battery cell coating film 500. The battery cell coating film 500 covers the bare battery cell 611 to form the battery cell 610.

[0104] Specifically, the battery cell 610 in this embodiment is manufactured based on the battery cell manufacturing equipment 100 in any embodiment of the first aspect described above, and by applying the battery cell manufacturing method in any embodiment of the second aspect described above.

[0105] Furthermore, the battery 600 in this embodiment also has all the beneficial effects of the cell manufacturing method in any embodiment of the second aspect or the cell manufacturing equipment 100 in any embodiment of the first aspect, which will not be repeated here.

[0106] In one specific embodiment of the present invention, such as Figure 17 As shown, four comparative examples manufactured using the traditional punching process and four experimental examples manufactured using the cell manufacturing equipment and method of this invention are provided. All examples used a cell length of 104mm and a cell width of 56mm, with cell thicknesses of 6mm, 8mm, 10mm, and 14mm respectively. According to the experimental records, the breakage rate of all four experimental examples of this invention was 0%, significantly better than the four comparative examples using the traditional punching process. Therefore, cell products manufactured using the cell manufacturing equipment and method of this invention have replaceability and service life, especially for the manufacture of high-thickness pouch cells, effectively reducing the risk of breakage.

[0107] The basic principles of the present invention have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in the present invention are merely examples and not limitations, and should not be considered as essential features of each embodiment of the present invention. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the present invention to the necessity of employing the aforementioned specific details.

[0108] The block diagrams of the devices, apparatuses, devices, and systems involved in this invention are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it. It should also be noted that in the apparatuses and devices of this invention, the components can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered equivalents of the invention.

[0109] Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof. The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the invention. Therefore, the invention is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features of the invention herein.

[0110] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery cell manufacturing equipment, characterized in that, include: A conveying device (1) is used to convey aluminum-plastic film (510) along a first direction; A pressing device (2) is provided above the conveying device (1). The pressing device (2) is provided with a lifting component (22). The lifting component (22) is used to carry the bare cell limiting block (520) and press the bare cell limiting block (520) down to the surface of the aluminum-plastic film (510). The feeding assembly (3) is located on the side of the pressing device (2) and is used to transport the bare cell limiting block (520) onto the lifting assembly (22); A heating component (4) is located below the conveying device (1). The heating component (4) is used to heat the aluminum-plastic film (510) so that the aluminum-plastic film (510) melts and is connected to the bare battery cell limiting block (520) as a whole.

2. The cell manufacturing equipment according to claim 1, characterized in that, The pressing device (2) includes: The lifting guide rail (21) extends vertically; The lifting assembly (22) is slidably connected to the lifting guide rail (21). The lifting assembly (22) is provided with a vertically penetrating limiting groove (2211). The shape of the limiting groove (2211) is adapted to the bare cell limiting block (520). The bare cell limiting block (520) can pass through the limiting groove (2211) and contact the surface of the aluminum-plastic film (510). The lifting drive mechanism (23) is connected to the lifting assembly (22) to drive the lifting assembly (22) to move up and down along the lifting guide rail (21).

3. The cell manufacturing equipment according to claim 2, characterized in that, The lifting assembly (22) includes: The lifting platform (221) is slidably connected to the lifting guide rail (21), and the lifting platform (221) is provided with the limiting groove (2211); A clamping mechanism (222) is provided on the lifting platform (221) and located on both sides of the limiting groove (2211). The clamping mechanism (222) is used to clamp the bare cell limiting block (520) located in the limiting groove (2211). The receiving mechanism (223) is located below the lifting platform (221) and opposite to the limiting groove (2211). It is used to receive the bare cell limiting block (520) located in the limiting groove (2211). The receiving mechanism (223) is movably connected to the lifting platform (221) and is used to move up and down relative to the lifting platform (221) and move along the first direction.

4. The cell manufacturing equipment according to claim 3, characterized in that, The lifting platform (221) is provided with a first through hole (2212); The receiving mechanism (223) includes: A fixing block (2231) is provided on the lifting platform (221) and connected to the edge of the first through hole (2212). The fixing block (2231) is provided with a first slide rail (2232) extending vertically on the side facing the first through hole (2212). The first slider (2233) is inserted into the first through hole (2212) and is slidably connected to the first slide rail (2232); A first driving mechanism is connected to the first slider (2233) for driving the first slider (2233) to slide along the first slide rail (2232); A receiving plate (2234) is provided below the lifting platform (221). The receiving plate (2234) is provided with a second slide rail (2235) extending along the first direction, and the bottom of the first slider (2233) is slidably connected to the second slide rail (2235). The second driving mechanism is connected to the receiving plate (2234) for driving the receiving plate (2234) to slide relative to the first slider (2233) in the first direction.

5. The cell manufacturing equipment according to claim 3, characterized in that, The lifting platform (221) is provided with third slide rails (2213) on both sides of the limiting groove (2211); The clamping mechanism (222) includes: At least two clamping members (2221) are respectively disposed on both sides of the limiting groove (2211) and are slidably connected to the third slide rail (2213) on both sides of the limiting groove (2211); The third driving mechanism is connected to the clamping member (2221) for driving the clamping member (2221) to slide along the third slide rail (2213) to clamp or release the bare cell limiting block (520) in the limiting groove (2211).

6. The cell manufacturing equipment according to any one of claims 1 to 5, characterized in that, The heating component (4) includes: A heater (41) is located below the conveying device (1) and opposite to the position of the bare cell limiting block (520) on the lifting assembly (22). The heater (41) is used to heat the aluminum-plastic film (510) on the conveying device (1). A heating lifting mechanism (42) is located below the heater (41) and connected to the heater (41) to drive the heater (41) to move vertically up and down.

7. The cell manufacturing equipment according to any one of claims 1 to 5, characterized in that, The feeding assembly (3) includes: A loading platform (31) is located on one side of the pressing device (2), and the loading platform (31) is used to support the bare cell limiting block (520); A positioning mechanism (32) is provided corresponding to the loading platform (31) and is used to collect the positioning information of the bare cell limiting block (520) on the loading platform (31); The transfer mechanism (33) is configured corresponding to the loading platform (31) and is communicatively connected to the positioning mechanism (32). The transfer mechanism (33) is used to grab the bare cell limiting block (520) on the loading platform (31) according to the positioning information and place the bare cell limiting block (520) on the lifting assembly (22).

8. The cell manufacturing equipment according to claim 7, characterized in that, The transfer mechanism (33) includes: The transfer support (331) is provided with a loading horizontal guide rail extending toward the lifting assembly (22); The transfer lifting mechanism (332) is slidably connected to the loading horizontal guide rail; The gripping mechanism (333) is connected to the transfer lifting mechanism (332) and is used to grip the bare cell limiting block (520).

9. A method for manufacturing a battery cell, applied to the battery cell manufacturing equipment as described in any one of claims 1 to 8, characterized in that, The battery cell manufacturing method includes the following steps: The conveying device transports the aluminum-plastic film to the target position below the pressing device; The feeding assembly transports the bare battery cell limiting block to be processed onto the lifting assembly of the pressing device; The lifting assembly presses the bare battery cell limiting block down onto the surface of the aluminum-plastic film; The heating component heats the aluminum-plastic film at the target location, causing the aluminum-plastic film to melt and connect with the bare battery cell limiting block as a whole; The conveying device continues to convey the aluminum-plastic film and cuts the aluminum-plastic film after it is connected to the bare cell limiting block to form a cell coating film.

10. A battery, characterized in that, include: A battery cell, said battery cell being manufactured by the battery cell manufacturing method of claim 9.

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