Power battery cell production equipment

Abstract

The application provides a power battery cell production equipment, comprising: at least two parallel arranged pole piece conveying devices, each pole piece conveying device has an initial end and a lamination station, the pole piece conveying device can drive the pole piece to move from the initial end to the lamination station; a lamination device, the lamination device and the lamination stations in each pole piece conveying device correspond one by one, the lamination device comprises a lamination table and a pole piece grabbing mechanism, the pole piece grabbing mechanism can move between the corresponding lamination table and the lamination station; a die cutting device, the die cutting device corresponds to the pole piece conveying device one by one, each die cutting device is arranged on one side of the initial end of the corresponding pole piece conveying device. The application realizes integrated production of lamination and cutting through two mutually parallel pole piece conveying mechanisms, and corresponding die cutting devices, lamination devices and lamination stations are arranged, a systematic layout is formed, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of new energy battery processing, specifically to a power battery cell production equipment. Background Technology

[0002] With the rapid development of new energy electric vehicles, consumers have placed higher demands on the quantity and quality of power batteries, and the production efficiency of power batteries urgently needs to be improved. Currently, the manufacturing process of power batteries requires multiple processing steps, such as die-cutting and stacking.

[0003] In the existing technology, the various processes are independent of each other and are not rationally arranged to form a system, which greatly affects production efficiency. The above problems are technical problems that urgently need to be solved in this field. Summary of the Invention

[0004] To address the shortcomings of the aforementioned power battery production equipment processes being independent and lacking a systematic layout, this invention provides a power battery cell production equipment.

[0005] According to the first aspect, this application provides a power battery cell manufacturing apparatus, comprising:

[0006] At least two parallel electrode conveying devices, each of which has an initial end and a stacking station, and the electrode conveying device can drive the electrode from the initial end to the stacking station;

[0007] The stacking device and the stacking station in each of the electrode conveying devices correspond one-to-one. The stacking device includes a stacking table and an electrode gripping mechanism. The electrode gripping mechanism can move between the corresponding stacking table and the stacking station.

[0008] A die-cutting device, which corresponds one-to-one with the electrode conveying device, and each die-cutting device is respectively disposed on one side of the initial end of the corresponding electrode conveying device.

[0009] In one alternative embodiment, a single electrode conveying device is provided with at least three of the stacking stations.

[0010] In an optional embodiment, the device further includes a hot pressing apparatus, which includes a hot press, a cell transfer mechanism, and a cell support mechanism. The hot press has a hot pressing station, the cell support mechanism is disposed at the hot pressing station, and the cell transfer mechanism is used to transfer the stacked cells to the cell support mechanism.

[0011] In one optional embodiment, the cell support mechanism includes a fixed frame, a support cloth, a movable frame, and a frame drive member. The fixed frame is fitted with the movable frame, the support cloth is fixed to the inner side of the movable frame, and the frame drive member is connected to both the fixed frame and the movable frame. The frame drive member drives the movable frame to move away from or closer to the fixed frame.

[0012] In an optional embodiment, the system further includes a pallet assembly comprising a pallet body and a pallet drive, the pallet body being disposed on one side of the movable frame and the pallet drive being connected to the pallet body. When the movable frame moves away from the fixed frame, the pallet drive drives the pallet between the movable frame and the fixed frame.

[0013] In one optional embodiment, the movable frame is provided with a plurality of opposing positioning blocks, each of the positioning blocks extending inward toward the movable frame to engage and position the battery cell.

[0014] The movable frame includes a first frame member, a second frame member, and a tension adjustment component. The first frame member, the second frame member, and the tension adjustment component enclose a hollow portion. The first frame member and the second frame member are slidably engaged and can slide relative to each other through the tension adjustment component. The support cloth is located inside the hollow portion, and both sides of the support cloth are connected to the first frame member and the second frame member, respectively.

[0015] In one optional embodiment, the stacking table includes a table surface, and the electrode gripping mechanism is used to grip the electrode and move it between the table surface and each of the stacking stations. A diaphragm conveying assembly and a diaphragm moving mechanism are provided on one side of the table surface, and the diaphragm moving mechanism can drive the diaphragm conveying assembly to move as a whole to the opposite side of the table surface.

[0016] In one alternative embodiment,

[0017] The electrode gripping mechanism includes a suction cup assembly, a moving assembly, and a detection mechanism. The moving assembly is connected to the suction cup assembly to drive the suction cup assembly to move.

[0018] The detection mechanism includes a light source, a reflector, and an image detector. The image detector is fixedly disposed on the outside of the suction cup assembly. The reflector and the light source are fixed on the suction cup assembly. The reflector is used to reflect the image of the electrode being grasped by the suction cup assembly to the image detector. The light source is configured to illuminate the electrode being grasped by the suction cup assembly.

[0019] In one optional embodiment, the electrode conveying device includes a first vacuum conveying mechanism, a second vacuum conveying mechanism, and a third vacuum conveying mechanism arranged sequentially. The first vacuum conveying mechanism, the second vacuum conveying mechanism, and the third vacuum conveying mechanism are respectively provided with a first conveying surface, a second conveying surface, and a third conveying surface for conveying the electrode.

[0020] The second conveying surface is disposed on the opposite side of the first conveying surface and the third conveying surface, and the first conveying surface, the second conveying surface and the third conveying surface are on the same horizontal plane;

[0021] A front detection component is provided on the first conveying surface, a back detection component is provided on the second conveying surface, and the stacking station is located on the third conveying surface.

[0022] In an optional embodiment, the device further includes an adhesive application device and an adhesive application moving device, the adhesive application moving device being used to transport the stacked battery cells to the adhesive application device; and / or

[0023] A QR code affixing device and a QR code affixing mobile device, wherein the QR code affixing mobile device is used to transport the stacked battery cells to the QR code affixing device.

[0024] According to the power battery cell production equipment of the above embodiments, the production equipment of this application has two parallel electrode conveying mechanisms and corresponding stacking devices and stacking stations, making the overall parallel linear layout of the equipment more reasonable and occupying less space. Furthermore, a corresponding die-cutting device is provided at the initial end of each electrode conveying mechanism, using the electrode conveying mechanisms to transport the die-cut electrodes to each stacking station to achieve integrated stacking and cutting production; this forms a systematic layout and greatly improves production efficiency. Attached Figure Description

[0025] Figure 1 This is a top view of the overall layout of one embodiment of this application;

[0026] Figure 2 This is a schematic diagram of an electrode conveying device in one embodiment of this application;

[0027] Figure 3 for Figure 2 Enlarged schematic diagram of the second vacuum conveying mechanism;

[0028] Figure 4 This is a schematic diagram of a stacking device in one embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the cell support mechanism and tray assembly in one embodiment of this application;

[0030] Figure 6This is an enlarged schematic diagram of the platform electrode gripping mechanism in one embodiment of this application;

[0031] Figure 7 for Figure 6 Enlarged diagram of point A in the middle.

[0032] Reference numerals: Electrode conveying device 1, First vacuum conveying mechanism 11, First conveying surface 111, Front detection component 112, Second vacuum conveying mechanism 12, Second conveying surface 121, Back detection component 122, Third vacuum conveying mechanism 13, Third conveying surface 131, Stacking station 132, Vacuum fan 14, Stacking device 2, Stacking table 21, Electrode gripping mechanism 22, Suction cup assembly 221, Moving assembly 222, Light source 231, Reflector 232, Image detector 233, measuring device, diaphragm roller, pressure knife, die-cutting device, hot pressing device, fixed frame, cloth support, movable frame, first frame component, second frame component, positioning block, tension adjustment assembly, guide component, tension driver, frame drive component, pallet body, pallet drive component, base, adhesive application device, QR code application device, and roll feeding device. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0034] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0035] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0036] This application discloses a power battery cell production equipment, such as... Figure 1 As shown, it includes: an electrode conveying device 1 and an electrode stacking device 2.

[0037] In the embodiments disclosed in this application, two electrode conveying devices 1 are provided, which are parallel to each other. One electrode conveying device 1 is used to convey positive electrode sheets, and the other electrode conveying device 1 is used to convey negative electrode sheets. Each electrode conveying device 1 has an initial end, a stacking station 132, and an end end. The electrode conveying device 1 has a carrying mechanism and a conveying drive mechanism. The conveying drive mechanism can drive the carrying mechanism to transport the electrode sheets from the initial end to the end end. The stacking station 132 is located between the initial end and the end end.

[0038] In the electrode manufacturing process, to maintain the stability and flatness of the electrode, for example, Figure 2 As shown, the supporting mechanism can be a ring-shaped vacuum belt on a vacuum conveyor, wherein the conveying drive mechanism consists of a drive roller and a driven roller sleeved at both ends of the inner side of the belt. Driven by the drive roller, the upper surface of the belt can move horizontally. In this example, the starting point of the conveying direction of the upper surface of the belt is defined as the starting end, and the ending point of the conveying direction of the upper surface of the belt is defined as the ending end. When the electrode is placed on the upper surface of the belt, it can be driven from the initial end to the stacking station 132, and then transported to the ending end. The aforementioned vacuum conveyor can be an existing vacuum conveyor, equipped with a vacuum fan 1414. The vacuum belt has vacuum holes, and the vacuum fan 1414 is connected to the vacuum holes on the vacuum belt through an air duct. Under the suction action of the vacuum fan 1414, the vacuum holes can generate a vacuum suction force. This application will not elaborate further on the structure and principle of the vacuum conveyor.

[0039] In this application, the number of stacking devices 2 corresponds one-to-one with the number of stacking stations 132 in each electrode conveying device 1. For example, when one electrode conveying device 1 has only one stacking station 132, the other electrode conveying device 1 also has only one stacking station 132 and one stacking device 2. In the embodiments disclosed in this application, the aforementioned stacking stations 132 may include three or more to enable simultaneous stacking of multiple battery cells, further improving processing efficiency. For example... Figure 1As shown, there are two electrode conveying devices 1, each of which has three stacking stations 132, which are arranged in sequence. There are also three stacking devices 2, which are respectively arranged between the two electrode conveying devices 1. More specifically, the stacking devices 2 are located between the two stacking stations 132 corresponding to them.

[0040] The aforementioned stacking device 2 is equipped with a stacking table 21 and an electrode gripping mechanism 22, for example... Figure 6 As shown, the electrode gripping mechanism 22 here can be composed of a suction cup assembly 221 and a moving assembly 222. The moving assembly 222 is used to drive the suction cup assembly 221 to move between the corresponding stacking table 21 and each stacking station 132. The suction cup assembly 221 grips the electrode by adsorption. The moving assembly 222 can be a multi-axis robotic arm or a sliding rail robotic arm. This application does not make specific limitations.

[0041] During the lamination process, the electrode gripping mechanism 22 can be driven to move to one side of the lamination station 132 to grip the positive or negative electrode on the lamination station 132 to the lamination table. Then, a separator is placed on the positive or negative electrode. The lamination gripping mechanism then grips the opposite negative or positive electrode on the other side of the lamination station 132 to the lamination table 21, thus performing a single lamination operation. By repeating the lamination operation multiple times, multiple laminations can be achieved.

[0042] Furthermore, in some embodiments, considering that multiple stacking operations are sometimes required, for example, some cells may need to be stacked three or more times, in order to facilitate the placement of the separator, in some optional designs such as Figure 4 As shown, the stacking table 21 includes a table surface, the upper surface of which is used for stacking operations. An electrode gripping mechanism 22 is used to grip the electrodes and move them between the table surface and each stacking station 132. In this embodiment, a diaphragm conveying assembly and a diaphragm moving mechanism are provided on one side of the table surface. The diaphragm moving mechanism can drive the entire diaphragm conveying assembly to move to the opposite side of the table surface. For example, as shown... Figure 4 As shown, the diaphragm conveying assembly is located on the right side of the table. This assembly includes at least two adjacent diaphragm rollers 24, with a gap between the rollers 24 for the diaphragm to pass through, thereby enabling diaphragm conveying. The diaphragm rollers 24 are connected to the diaphragm frame via roller shafts, which are rotatably engaged with the frame via bearings, allowing the diaphragm rollers 24 to rotate with the roller shafts. The diaphragm moving mechanism is used to move the diaphragm frame, thereby transporting the entire diaphragm roller assembly to the left side of the table.

[0043] In this application, the diaphragm is conveyed onto the worktable via a diaphragm conveying assembly. One end of the diaphragm on the worktable is fixed to the worktable, while the remaining portion remains on the diaphragm conveying assembly. The worktable and the diaphragm conveying assembly work together to tension the diaphragm conveyed by the diaphragm conveying assembly. Simultaneously, the electrode gripping mechanism 22 moves the electrode onto the worktable, and the diaphragm conveying assembly moves the diaphragm to the opposite side of the worktable, allowing the diaphragm to cover the electrode. Another electrode is then placed on the diaphragm, and this process is repeated to perform multiple stacking operations. Furthermore, the stacking device 2 in this application includes a lifting and lowering pressure knife 25 on the worktable. The pressure knife 25 is driven by a lifting drive located inside the worktable, enabling it to press the electrode during stacking. This application does not elaborate on the structure and working principle of the pressure knife 25; the pressure knife 25 can adopt the structure of existing stacking equipment.

[0044] In this application, the diaphragm conveying component reciprocates to drive the diaphragm to be stacked; compared with the prior art, which directly grasps the diaphragm to press and stack the sheets, the impact on the machine is smaller and the equipment is more stable.

[0045] This application provides two parallel electrode conveying devices 1, which can simultaneously convey positive and negative electrode sheets. Each electrode conveying device 1 is provided with a corresponding stacking station 132, and a stacking device 2 corresponding to the stacking station 132 is provided. Thus, in a small space, the feeding and stacking of electrode sheets can be linked through a simple layout to realize the stacking operation.

[0046] In addition, in some embodiments of this application, a die-cutting device 3 is also installed at the initial end of the electrode conveying device 1. In the embodiments disclosed in this application, the number of die-cutting devices 3 corresponds one-to-one with the number of electrode conveying devices 1. For example, Figure 1As shown, there are two electrode conveying devices 1, and therefore two die-cutting devices 3. The two die-cutting devices 3 are respectively fixedly installed on one side of the initial end of the two electrode conveying devices 1 (that is, a single die-cutting device 3 is installed on one side of the initial end of a single electrode conveying device 1). For example, the die-cutting device 3 can be installed on one side of the length direction of the initial end, that is, the side of the initial end away from the end end, or it can be set on any side of the width direction of the initial end. This application does not impose too many limitations on this. One die-cutting device 3 is used to die-cut the positive electrode sheet and convey the die-cut positive electrode sheet to one of the electrode sheet conveying devices 1 under the action of rollers in the die-cutting device 3; the other die-cutting device 3 is used to die-cut the negative electrode sheet and convey the die-cut negative electrode sheet to another conveying device; the die-cutting device 3 can be directly connected to the winding device 7 with the electrode sheet wound on it, or it can be connected to other electrode sheet processing devices, which are not limited in this application; the above-mentioned die-cutting device 3 can be an existing die-cutting device 3, which is used to die-cut the electrode sheet into a fixed size, and the specific principle and structure of the die-cutting device 3 are not described in this application. The die-cut electrode sheet will directly enter the electrode sheet conveying device 1, thereby realizing the integrated processing of die-cutting and stacking. The layout of this application is reasonable and compact, which greatly improves the efficiency of die-cutting and stacking of electrode sheets.

[0047] In addition, to further improve production efficiency, some optional designs, such as Figure 1 As shown, this application also includes a hot pressing device 4. Specifically, the hot pressing device 4 includes a hot press, a cell transfer mechanism, and a cell support mechanism; wherein, the hot press includes an upper pressure plate and a lower pressure plate, and a hot pressing station located between the upper pressure plate and the lower pressure plate. The hot press can be an existing hot press, and this application will not elaborate on the specific structure and working principle of the hot press here.

[0048] The aforementioned cell support mechanism is located at the hot pressing station. This cell support mechanism is used to support the cell during hot pressing. The cell transfer mechanism is used to transfer the stacked cells to the cell support mechanism. This cell transfer mechanism can be, but is not limited to, a robotic arm. The aforementioned cell support mechanism can include a Teflon material support cloth 412, which is used to support the cell to prevent the cell from directly sticking to the lower pressing block of the hot press, which would make it difficult to pick up or put down or cause indentations.

[0049] In an optional example, such as Figure 5As shown, the cell support mechanism includes a fixed frame 411, a support cloth 412, a movable frame 413, and a frame drive component 414. The fixed frame 411 and the movable frame 413 are fitted together, and both are hollow frame structures. The support cloth 412 can be made of Teflon, and its edge is fixedly connected to the inner side of the movable frame 413, thereby tensioning the support cloth 412 by the movable frame 413. The frame drive component 414 is connected to both the fixed frame 411 and the movable frame 413, as shown in the diagram. Figure 5 As shown, the frame drive 414 can be a cylinder. The cylinder body is fixed to the side edge of the fixed frame 411, and the piston rod of the cylinder is fixedly connected to the side edge of the movable frame 413. Thus, by extending and retracting the piston rod, the movable frame 413 can be driven away from the fixed frame 411.

[0050] In this example, after hot pressing is completed, the movable frame 413 can be moved away from the fixed frame 411, thereby causing the movable frame 413 to lift the support cloth 412. At this time, a tray can be placed under the support cloth 412 to support the battery cell. The support of the tray creates a clearance between the outer side of the battery cell and the lower pressing block of the hot press, which facilitates the gripping of the battery cell by a robotic arm or other battery cell transfer mechanism to transfer the battery cell to the next process.

[0051] Based on the above, this application also discloses a tray assembly. For example, the tray assembly includes a tray body 421 and a tray drive 422. The tray body 421 is mounted on one side of a movable frame 413, and the tray drive 422 is connected to the tray body 421. The tray drive 422 may include a base and a connecting portion disposed on the base. The connecting portion slides against the base via a slide rail extending toward the movable frame 413. The tray drive 422 also includes a cylinder, with the piston of the cylinder facing toward the movable frame 413. When the movable frame 413 moves away from the fixed frame 411, and there is a gap between the movable frame 413 and the fixed frame 411 larger than the tray, the cylinder drives the connecting portion, allowing the connecting portion to slide along the slide rail on the base, thereby driving the tray into the space between the movable frame 413 and the fixed frame 411, so that the tray body 421 is positioned below the support cloth 412, supporting the battery cell. It should be understood that the mechanism for driving the connecting portion can be, in addition to a cylinder, a lead screw electrode or other similar structure.

[0052] In some optional designs, to position the battery cell located within the movable frame 413, the movable frame 413 is provided with multiple opposing positioning blocks 4131, each extending inwards from the movable frame 413 to engage and position the battery cell. For example... Figure 5As shown, four positioning blocks 4131 are provided. The four positioning blocks 4131 are arranged in pairs on the front and rear sides of the movable frame 413. The battery cell is engaged by the two sets of positioning blocks 4131, thereby enabling the positioning of the battery cell.

[0053] In some embodiments, the movable frame 413 is composed of a first frame member 413a, a second frame member 413b, and a tension adjustment component 4134. The first frame member 413a, the second frame member 413b, and the tension adjustment component 4134 enclose a hollow portion. The first frame member 413a and the second frame member 413b are slidably engaged by the tension adjustment component 4134 and can slide relative to each other. Specifically, both the first frame member 413a and the second frame member 413b have a concave structure, and their concave portions are arranged opposite to each other. The tension adjustment assembly 4134 includes a guide member 4134a, which can be a guide rod or a slide rail, etc. Both sides of the first frame member 413a and the second frame member 413b are slidably engaged through the guide member 4134a. The tension adjustment assembly 4134 also includes a tension driver 4134b, for example, the tension driver 4134b can be a cylinder. The tension driver 4134b is connected to the first frame member 413a and the second frame member 413b respectively. Through the tension driver 4134b, the first frame member 413a and the second frame member 413b can be driven to slide relative to each other. The support cloth 412 is located within the hollowed-out portion formed by the first frame member 413a, the second frame member 413b, and the guide member 4134a. The two sides of the support cloth 412 are connected to the first frame member 413a and the second frame member 413b respectively. When the first frame and the second frame are far apart, the support cloth 412 located inside the first frame member 413a and the second frame member 413b can be tensioned.

[0054] This application, by setting up a tray assembly and a cell support mechanism, isolates the lower pressure plate and the cell during hot pressing using the support cloth 412 in the cell support mechanism. This reduces damage to the cell during hot pressing and the loading / unloading process, thereby improving the cell yield. After hot pressing, the tray body 421 in the tray assembly extends under the support cloth 412 to support the cell, creating a clearance between the cell and the lower pressure plate, thus facilitating cell handling.

[0055] In this application, a detection mechanism is also provided to better inspect the electrodes during stacking. Considering the limited space of the stacking stage 21, and to improve the compactness of this application, a more specific embodiment of the detection mechanism is provided, such as... Figure 7As shown, the detection mechanism includes a light source 231, a reflector 232, and an image detector 233. The image detector 233 is fixedly disposed on the outside of the suction cup assembly 221. For example, the image detector 233 can be fixedly disposed on the table or the side edge of the table via a bracket. The image detector 233 can be a device such as a CCD camera. The reflector 232 and the light source 231 are fixed to the suction cup assembly 221. The reflector 232 can reflect the image of the electrode being attracted by the suction cup assembly 221 to the image detector 233. Taking a CCD camera as the image detector 233 as an example, the lens of the CCD camera can be horizontally facing the inside of the table. The reflector 232 can be a right-angle lens fixed to the side of the suction cup assembly 221, which can horizontally reflect the electrode attracted below the suction cup assembly 221 onto the lens of the CCD camera. The light source 231 is configured to illuminate the electrode attracted by the suction cup assembly 221. Preferably, the light source 231 can be disposed on the suction cup assembly 221.

[0056] In existing technologies, electrode detection devices typically take images directly perpendicular to the product being inspected. This necessitates a separate detection position below the image detector 233. However, this application uses a reflector 232 to directly reflect the electrode from the suction cup assembly 221 into the image detector 233, eliminating the need for a separate detection position and significantly reducing the device's size. The detection mechanism disclosed in this application, employing a method of reflecting the electrode to the image detector 233 via a reflector 232, enables the detection of screenshots within a limited space, effectively saving space.

[0057] In some embodiments, to facilitate the inspection of the die-cut electrodes, a front detection component 112 and a back detection component 122 are also provided on the electrode conveying device 1. Specifically, the electrode conveying device 1 includes a three-section vacuum conveying mechanism, which is defined in this application as a first vacuum conveying mechanism 11, a second vacuum conveying mechanism 12, and a third vacuum conveying mechanism 13. It should be understood that each vacuum conveying mechanism can be composed of several vacuum belt conveyors spliced ​​together.

[0058] For example, Figure 2 As shown, the third vacuum conveying mechanism 13 is composed of three vacuum belt conveyors spliced ​​together. The first vacuum conveying mechanism 11, the second vacuum conveying mechanism 12 and the third vacuum conveying mechanism 13 are arranged sequentially from the initial end to the end end. The first vacuum conveying mechanism 11 has a first conveying surface 111 for conveying the electrode sheet, the second vacuum conveying mechanism 12 has a second conveying surface 121 for conveying the electrode sheet, and the third vacuum conveying mechanism 13 has a third conveying surface 131 for conveying the electrode sheet. The second conveying surface 121 is located on the opposite side of the first conveying surface 111 and the second conveying surface 121.

[0059] For example Figure 2 As shown, the first vacuum conveying mechanism 11 and the third vacuum conveying mechanism 13 are directly fixed to the ground, and their top surfaces are defined as the first conveying surface 111 and the third conveying surface 121, respectively. The second vacuum conveying mechanism 12 is disposed above the first vacuum conveying mechanism 11 and the third vacuum conveying mechanism 13, and its bottom surface is the second conveying surface 121. The second conveying surface 121 is on the same plane as the top surfaces of the first vacuum conveying mechanism 11 and the third vacuum conveying mechanism 13, that is, the first conveying surface 111, the second conveying surface 121, and the third conveying surface 131 are level. Moreover, each conveying surface moves from the initial end of the electrode conveying device 1 towards the final end, that is, the first conveying surface 111 moves towards the first conveying surface 121. The second vacuum conveying mechanism 12 moves, while the third conveying surface 131 moves away from the second vacuum conveying mechanism 12. The second conveying surface 121 moves from the first vacuum conveying mechanism 11 to the third vacuum conveying mechanism 13. The front detection component 112 is located above the top surface of the first vacuum conveying mechanism 11, and the back detection component 122 is located below the bottom surface of the second vacuum conveying mechanism 12. Both the front detection component 112 and the back detection component 122 can be line scanning cameras. When the electrode passes through the front detection component 112 or the back detection component 122, defective products can be detected in time. In the embodiments disclosed in this application, each stacking station 132 is located on the third vacuum conveying mechanism 13.

[0060] When the electrode conveying device 1 is in operation, the die-cut electrode is first conveyed to the first vacuum conveying mechanism by the die-cutting device 3. Then, the first vacuum conveying mechanism 11 moves the electrode toward the second vacuum conveying mechanism 12. At this time, the electrode passes through the front detection component 112, which can detect the front of the electrode. When the electrode is transported to the second vacuum conveying mechanism 12, if the electrode is detected as defective, the second vacuum conveying mechanism 12 will stop adsorbing the defective electrode, and the defective electrode will be discharged through the gap between the first vacuum conveying mechanism 11 and the second vacuum conveying mechanism 12. When the electrode is detected as normal, since the bottom surface of the second vacuum conveying mechanism 12 is flush with the top surface of the first vacuum conveying mechanism 11, the vacuum hole on the second vacuum conveying mechanism 12 will work, adsorbing the electrode onto the bottom surface of the second vacuum conveying mechanism 12. The electrode then passes through the reverse detection component 122 with the second vacuum conveying mechanism 12 for reverse detection. Similarly, if the reverse side of the electrode is normal, it will enter the third vacuum conveying mechanism 13; if the reverse side of the electrode is detected to be defective, the vacuum hole on the second vacuum conveying mechanism 12 will stop adsorption, the defective electrode will fall out through the bottom of the second vacuum conveying mechanism 12, and the normal electrode will enter the third vacuum conveying mechanism 13 and enter the stacking station 132 with the third vacuum conveying mechanism 13.

[0061] In addition, some optional designs also include an adhesive applicator 5 and / or a QR code applicator 6, for example Figure 1 As shown, the adhesive applicator 5 can be configured on one side of the hot pressing device 4, and the QR code applicator 6 can be configured between the adhesive applicator and the end point of the electrode conveying device 1.

[0062] This application also includes an adhesive application moving device corresponding to the adhesive application device 5, and a QR code affixing moving device corresponding to the QR code affixing device 6; the adhesive application moving device is used to transport the stacked battery cells to the adhesive application device 5, and the QR code affixing moving device is used to transport the stacked battery cells to the QR code affixing device 6. Both the adhesive application device 5 and the QR code affixing device 6 can be existing adhesive application devices and QR code affixing devices used for battery cells; the adhesive application moving device and the QR code affixing moving device can be... Figure 6 The present application does not limit the use of the same cell transfer mechanism as the one in the example, or to existing cell transfer mechanisms composed of other robotic arms and grippers. It should be understood that, in some embodiments, when the above-mentioned adhesive applicator 5 and QR code applicator 6 coexist, the adhesive applicator moving device and the QR code applicator moving device can move the stacked cells from one device to the other based on the positional order of the adhesive applicator 5 and the QR code applicator 6.

[0063] The present invention features a compact layout, simple electrode transfer, and multiple vacuum conveying mechanisms, each of which can be independently adjusted for precise electrode delivery.

[0064] This application uses two parallel electrode conveying mechanisms and is equipped with corresponding stacking devices and stacking stations 132. The parallel straight line layout is more reasonable, occupies less space, and can realize integrated stacking and cutting production, forming a systematic layout and greatly improving production efficiency.

[0065] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A power battery cell production apparatus, characterized in that, include: At least two parallel electrode conveying devices, each of which has an initial end and a stacking station, and the electrode conveying device can drive the electrode from the initial end to the stacking station; A stacking device is disposed between the two electrode conveying devices. The stacking device and the stacking station in each of the electrode conveying devices correspond one-to-one. The stacking device includes a stacking table and an electrode gripping mechanism. The electrode gripping mechanism can move between the corresponding stacking table and stacking station to alternately grip the electrodes on the two electrode conveying devices and stack them on the stacking table. The electrode gripping mechanism includes a suction cup assembly, a moving assembly, and a detection mechanism. The moving assembly is connected to the suction cup assembly to drive the suction cup assembly to move. The detection mechanism includes a light source, a reflector, and an image detector. The image detector is fixedly disposed on the outside of the suction cup assembly. The reflector and the light source are fixed on the suction cup assembly. The reflector is used to reflect the image of the electrode gripped by the suction cup assembly to the image detector. The light source is configured to illuminate the electrode gripped by the suction cup assembly. A die-cutting device, which corresponds one-to-one with the electrode conveying device, and each die-cutting device is respectively disposed on one side of the initial end of the corresponding electrode conveying device.

2. The power battery cell production equipment as described in claim 1, characterized in that, Each of the electrode conveying devices has at least three stacking stations.

3. The power battery cell production equipment as described in claim 1, characterized in that, It also includes a hot pressing device, which includes a hot press, a cell transfer mechanism, and a cell support mechanism. The hot press has a hot pressing station, the cell support mechanism is located at the hot pressing station, and the cell transfer mechanism is used to transfer the stacked cells to the cell support mechanism.

4. The power battery cell production equipment as described in claim 3, characterized in that, The cell support mechanism includes a fixed frame, a support cloth, a movable frame, and a frame drive. The fixed frame is attached to the movable frame, the support cloth is fixed to the inner side of the movable frame, and the frame drive is connected to both the fixed frame and the movable frame. The frame drive drives the movable frame to move away from or closer to the fixed frame.

5. The power battery cell production equipment as described in claim 4, characterized in that, It also includes a pallet assembly, which includes a pallet body and a pallet drive. The pallet body is disposed on one side of the movable frame, and the pallet drive is connected to the pallet body. When the movable frame moves away from the fixed frame, the pallet drive drives the pallet to enter between the movable frame and the fixed frame.

6. The power battery cell production equipment as described in claim 5, characterized in that, The movable frame is provided with a plurality of opposing positioning blocks, each of which extends into the inner side of the movable frame to engage and position the battery cell. The movable frame includes a first frame member, a second frame member, and a tension adjustment component. The first frame member, the second frame member, and the tension adjustment component enclose a hollow portion. The first frame member and the second frame member are slidably engaged and can slide relative to each other through the tension adjustment component. The support cloth is located inside the hollow portion, and both sides of the support cloth are connected to the first frame member and the second frame member, respectively.

7. The power battery cell production equipment as described in claim 1, characterized in that, The stacking table includes a table surface, and a diaphragm conveying assembly and a diaphragm moving mechanism are provided on one side of the table surface. The diaphragm moving mechanism can drive the diaphragm conveying assembly to move as a whole to the opposite side of the table surface.

8. The power battery cell production equipment as described in any one of claims 1 to 7, characterized in that, The electrode conveying device includes a first vacuum conveying mechanism, a second vacuum conveying mechanism, and a third vacuum conveying mechanism arranged sequentially. The first vacuum conveying mechanism, the second vacuum conveying mechanism, and the third vacuum conveying mechanism are respectively provided with a first conveying surface, a second conveying surface, and a third conveying surface for conveying the electrode. The second conveying surface is disposed on the opposite side of the first conveying surface and the third conveying surface, and the first conveying surface, the second conveying surface and the third conveying surface are on the same horizontal plane; A front detection component is provided on the first conveying surface, a back detection component is provided on the second conveying surface, and the stacking station is located on the third conveying surface.

9. The power battery cell production equipment as described in any one of claims 1 to 7, characterized in that, It also includes an adhesive application device and an adhesive application moving device, wherein the adhesive application moving device is used to transport the stacked cells to the adhesive application device; and / or A QR code affixing device and a QR code affixing mobile device, wherein the QR code affixing mobile device is used to transport the stacked battery cells to the QR code affixing device.

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