Atomization injection process and device

Abstract

The present invention provides an atomization liquid injection process and device, belonging to the field of lithium battery production technology. The atomization liquid injection process provided by the present invention first obtains a positive electrode sheet, a negative electrode sheet, an electrolyte and a diaphragm; secondly, the positive electrode sheet, the diaphragm and the negative electrode sheet are stacked in sequence, and the electrolyte is sprayed on the positive electrode sheet, the negative electrode sheet or the diaphragm while the positive electrode sheet, the diaphragm and the negative electrode sheet are stacked in sequence, and the electrolyte is sprayed on the positive electrode sheet, the negative electrode sheet or the diaphragm in atomized spraying, and the electrolyte after spraying is attached to the positive electrode sheet, the negative electrode sheet or the diaphragm in the form of fine beads, and a bare battery cell is obtained while injecting liquid; then the bare battery cell is loaded into a shell; the atomization liquid injection process of the present invention performs atomization liquid injection while stacking, so that the electrode sheet can be fully in contact with the electrolyte during the stacking process, reducing the subsequent static infiltration time, and the atomization liquid injection device provided by the present invention has both a stacking function and a liquid injection function, and the atomization liquid injection process can be implemented by the atomization liquid injection device to reduce the static infiltration time.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium battery production, and more specifically, relates to an atomization liquid injection process and device. Background Art

[0002] With the development of battery technology, lithium batteries are widely used due to their advantages such as light weight, high energy storage density and long service life. According to the different manufacturing processes of the core, lithium batteries can be divided into laminated lithium batteries and wound lithium batteries. In comparison, laminated lithium batteries have higher energy density, more stable internal structure and wider application fields. During the production of existing laminated lithium batteries, the positive and negative pole pieces are repeatedly sucked by the negative pressure suction cup structure, and a layer of isolation film for separating the pole pieces is laid between the positive and negative pole pieces, and the three are stacked in sequence to form a core. The core that has completed the lamination process needs to be assembled into the shell first, and the shell is provided with a liquid injection port, and then the liquid injection equipment injects liquid into the core through the liquid injection port. After the injection is completed, the core needs to be left to soak for a period of time before the shelled core can be sent to the formation process to ensure that the injection is in full contact with the pole piece in the core. In the existing production process, the static soaking time of lithium batteries is generally up to several hours, which makes the battery production efficiency low. Summary of the invention

[0003] The purpose of the present invention is to provide an atomization liquid injection process and device to solve the technical problem that in the existing production process in the prior art, the static immersion time of the lithium battery is generally as long as several hours, resulting in low battery production efficiency.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: in a first aspect, an embodiment of the present invention provides an atomization liquid injection process, comprising the following steps:

[0005] S01, obtaining a positive electrode sheet, a negative electrode sheet, an electrolyte and a separator;

[0006] S02, stacking the positive electrode sheet, the separator and the negative electrode sheet in sequence, with the separator provided between each upper and lower adjacent positive electrode sheet and negative electrode sheet, and spraying the electrolyte on the positive electrode sheet or the separator each time the positive electrode sheet and the separator are stacked, and spraying the electrolyte on the negative electrode sheet or the separator each time the negative electrode sheet and the separator are stacked, and the sprayed electrolyte is attached to the positive electrode sheet, the negative electrode sheet or the separator in the form of fine beads, so as to prepare a bare battery cell while injecting the liquid;

[0007] S03, installing the bare battery cell into the shell.

[0008] In the second aspect, an embodiment of the present invention further provides an atomizing liquid injection device, including a stacking portion and two groups of liquid injection portions, the stacking portion is provided with a first linear module, a stacking platform is provided on the first slider of the first linear module, the stacking platform can slide to the first stacking position and the second stacking position with the first slider, when the stacking platform slides to the first stacking position or the second stacking position, the pole piece can be stacked on the diaphragm on the stacking platform, a diaphragm storage mechanism is provided between the first stacking position and the second stacking position, the free end of the diaphragm in the diaphragm storage mechanism is placed on the stacking platform, a plurality of pressing mechanisms are provided on the first slider, and the plurality of pressing mechanisms are respectively located on both sides of the stacking platform The pressing mechanism is used to press the positive electrode sheets, diaphragms and negative electrode sheets stacked in sequence on the stacking platform. When the stacking platform slides between the first stacking position and the second stacking position with the first slider, the diaphragm storage mechanism will be pulled to release the diaphragm so that the diaphragm is stacked on the positive electrode sheet or the negative electrode sheet; the two groups of injection parts are respectively located above the first stacking position and the second stacking position, and the injection part is provided with an injection lifting cylinder, and the cylinder rod of the injection lifting cylinder is connected to a injection box, and an injection mechanism is provided in the injection box. The injection box is used to cover the stacking platform that slides to the bottom thereof, and the injection mechanism is used to atomize and inject liquid to the positive electrode sheet, diaphragm or negative electrode sheet on the stacking platform.

[0009] In combination with the second aspect, in a possible implementation, four groups of pressing mechanisms are provided, and the four groups of pressing mechanisms are symmetrically arranged on both sides of the stacking table in pairs, and the pressing mechanism includes a second linear module and a pressing cylinder. The second linear module is arranged on the first slider, and the sliding direction of the second slider of the second linear module is perpendicular to the sliding direction of the first slider; the pressing cylinder is arranged on the second slider, and a pressing claw is provided on the cylinder rod of the pressing cylinder. The pressing cylinder is used to push the pressing claw to move up and down, and the second slider is used to drive the pressing claw to be inserted above the stacking table or away from the stacking table.

[0010] In combination with the second aspect, in a possible implementation, the diaphragm storage mechanism includes a fixed seat, a diaphragm roller, two first clamping rollers, a first transfer roller, a second transfer roller and two second clamping rollers. The diaphragm roller is rotatably arranged on the fixed seat, the diaphragm is wound on the diaphragm roller, one end of the diaphragm is fixed on the diaphragm roller, and the other end is freely released; the two first clamping rollers are arranged at the lower left of the diaphragm roller and are rotatably connected to the fixed seat, the two first clamping rollers are arranged up and down, and a first gap for the diaphragm to pass through is provided between the two clamping rollers; the first transfer roller is rotatably connected to the fixed seat, and the second A transfer roller is located at the lower right side of the two first clamping rollers; the second transfer roller is rotatably connected to the fixed seat, and the second transfer roller is located at the lower left side of the first transfer roller; the two second clamping rollers are rotatably connected to the fixed seat, and the two second clamping rollers are arranged side by side on the left and right, and the two second clamping rollers are located in the middle of the first stacking position and the second stacking position, and a second gap for the diaphragm to pass through is provided between the two second clamping rollers; the free end of the diaphragm passes through the first gap, bypasses the first transfer roller, the second transfer roller, and passes through the second gap in sequence, and then is pressed on the stacking table by a pressing mechanism.

[0011] In combination with the second aspect, in a possible implementation, the liquid injection mechanism includes a liquid injection rack, a sliding rod, multiple sliding seats, an adjustment rack, and an adjustment cylinder. The liquid injection rack is connected to the liquid injection box and is arranged in the liquid injection box; the sliding rod is arranged on the liquid injection rack; multiple sliding seats are slidably arranged on the sliding rod, each sliding seat is provided with an atomizing nozzle, and a rolling wheel is rotatably arranged on the back of each sliding seat; the adjustment rack is provided with a vertical guide groove and multiple inclined guide grooves, and the multiple inclined guide grooves are divided into two groups, and the two groups of inclined guide grooves are respectively located on both sides of the vertical guide groove, and are symmetrical with the vertical guide groove as the axis, and a rolling wheel is rollingly arranged in the vertical guide groove and each inclined guide groove; the adjustment cylinder is arranged on the liquid injection rack and connected to the adjustment rack. The adjustment cylinder is used to push the adjustment rack up and down, drive the sliding seat to move along the sliding rod, and adjust the distance between each atomizing nozzle.

[0012] In combination with the second aspect, in a possible implementation, two sliding rods are provided, the two sliding rods are arranged in parallel, and multiple sliding seats are provided on each sliding rod. The adjustment frame is located between the two sliding rods, and the adjustment frame is a U-shaped structure. Vertical guide grooves and multiple oblique guide grooves are provided on two parallel vertical plates of the adjustment frame, and each vertical plate is connected to the sliding seat on the same side through a rolling wheel.

[0013] In combination with the second aspect, in a possible implementation, the atomizing liquid injection device also includes a pole piece transmission part, two third linear modules, and two stacking lifting cylinders. The pole piece transmission part is used to transmit the positive pole piece and the negative pole piece. The positive pole piece and the negative pole piece are alternately placed on the pole piece transmission part in sequence. The transmission direction of the pole piece transmission part is parallel to the moving direction of the stacking table; one of the third linear modules is located above the first stacking position, and the other third linear module is located above the second stacking position. A third slider is slidably provided on the third linear module, and the third slider is provided on the third linear module. The sliding direction of the three sliders is perpendicular to the moving direction of the stacking table. The two groups of liquid injection lifting cylinders of the liquid injection parts are respectively provided on the two third sliders; the two stacking lifting cylinders are respectively provided on the two third sliders, and the cylinder rod of each stacking lifting cylinder is connected to a stacking suction cup, which is used to absorb the pole pieces. The stacking lifting cylinder is used to drive the stacking suction cup to move up and down to contact the pole pieces. The third linear module is used to drive the stacking suction cup to move between the pole piece transmission part and the stacking station, so that the stacking suction cup can transport the pole piece on the pole piece transmission part to the stacking place for stacking.

[0014] In combination with the second aspect, in a possible implementation, the pole piece transmission part includes a transport frame, two transport wheels, two groups of transport belts, and multiple positioning members. The transport frame is a hollow structure, and a transmission space is provided inside the transport frame; the two transport wheels are rotatably connected to the transport frame and are located in the transmission space; the two groups of transport belts are located in the transmission space, and are both connected to the two transport wheel belts for transmission, and the two groups of transport belts are arranged at intervals; the positioning members are L-shaped structures, and four positioning members are grouped together. Two positioning members of the same group are arranged on each conveyor belt, and the positioning members of the same group are symmetrical in pairs, and the corners of the positioning members of the same group form a pole piece placement position for positioning the pole piece.

[0015] In combination with the second aspect, in a possible implementation, the electrode transmission unit also includes two sets of electrode storage mechanisms, the two sets of electrode storage mechanisms are used to store positive electrode plates and negative electrode plates respectively, the two sets of electrode storage mechanisms are connected to the transport frame, and are respectively located on the sliding paths of the two third sliders, the electrode storage mechanism includes two brackets, storage blocks, push-up suction cups, push-up cylinders and a driving structure, the two brackets are arranged on the transport frame, the two brackets are respectively arranged on both sides of the transmission space, each bracket is rotatably provided with two rotating shafts, the two rotating shafts are arranged up and down, each rotating shaft is provided with two pulleys at intervals, the upper and lower pulleys on the brackets on the same side are a group, and the pulleys in the same group are connected by belt transmission; each belt is provided with multiple storage blocks, Multiple storage blocks are arranged at intervals along the transmission direction of the belt, and a positioning groove is provided at one corner of the storage block. The inner wall of the positioning groove is an inclined surface. Four storage blocks on the four belts and located in the same plane are a group, and the positioning grooves on the storage blocks in the same group form a pole piece storage space. The inner wall of the positioning groove is used for contacting with the corner of the pole piece, guiding and limiting the pole piece; the push-up suction cup is arranged in the transmission space and is located below the pole piece conveyed by the belt, and is used to absorb the pole piece above; the push-up cylinder is connected to the push-up suction cup, and is used to push the push-up suction cup up and down, absorb the pole piece and extend the pole piece into the four belts; the driving structure is used to drive the four belts to drive synchronously, so that the storage blocks in the same group are transferred to the bottom of the pole piece extending into the belt, and the pole piece is stored in the pole piece storage space.

[0016] In combination with the second aspect, in a possible implementation, the driving structure includes two mounting frames, two first gears, two second gears, two claws, two baffles, two levers and a crossbar. The two mounting frames are connected to the transport frame and are respectively located on the outsides of the two frames. A connecting shaft is rotatably provided on the mounting frames; the two first gears are respectively coaxially connected to the rotating shafts located below on the two frames; the two second gears are respectively rotatably connected to the two connecting shafts through two one-way bearings, and the second gears are meshed with the first gears one by one; a claw is rotatably provided on each mounting frame, and the end of the claw extends into the gear teeth of the second gear on the same mounting frame; each mounting frame is provided with A baffle is arranged, and the baffle is used to prevent the claw from rotating downward; two push rods are respectively connected to the two connecting shafts, and the two push rods are erected on the mounting frame under the action of gravity, and one end of the push rod extends out of the mounting frame; the cross frame rod is connected to the cylinder rod of the push-pushing cylinder, and the cross frame rod is located below the push-pushing suction cup, and push rods are arranged at both ends of the cross frame rod; when the two push rods move up with the cylinder rod of the push-pushing cylinder, the two push rods push the two push rods to rotate, and the second gear rotates with the connecting shaft under the action of the one-way bearing, driving the first gear and the belt to move; when the two push rods move down with the cylinder rod of the push-pushing cylinder, the push rods rotate in the opposite direction under the action of gravity, and the one-way bearing, the claw and the baffle cooperate with each other to keep the second gear stationary.

[0017] The beneficial effect of the atomization liquid injection process and device provided by the present invention is that: compared with the prior art, the atomization liquid injection process of the present invention atomizes and injects electrolyte into the positive electrode sheet diaphragm or negative electrode sheet while laminating the positive electrode sheet, diaphragm and negative electrode sheet. Taking the stacking of the positive electrode sheet and the diaphragm as an example, before stacking the positive electrode sheet on the diaphragm, the diaphragm is first atomized and sprayed with electrolyte, and the electrolyte is attached to the diaphragm in the form of fine beads, and then the positive electrode sheet is stacked on the diaphragm; the positive electrode sheet can also be atomized and sprayed with electrolyte after the positive electrode sheet is stacked on the diaphragm. The present invention prepares a bare battery cell by atomizing and injecting liquid while laminating, first atomizing and injecting liquid and then putting it into the shell, so that the electrode sheet can fully contact with the electrolyte during the injection process, reducing the subsequent static immersion time and improving production efficiency. The atomizing liquid injection device provided by the present invention can be applied to the atomizing liquid injection process to atomize and inject liquid into the electrode sheet or diaphragm during the lamination process. The atomizing and liquid injection device includes a stacking part and two groups of liquid injection parts. The stacking part is provided with a first linear module. The first slider on the first linear module can move horizontally. The first slider is provided with a stacking platform and multiple pressing mechanisms. The multiple pressing mechanisms are used to press the diaphragms and pole pieces stacked on the stacking platform. The stacking platform can slide with the first slider to the first stacking position and the second stacking position for stacking the pole pieces. The stacking part also includes a diaphragm storage mechanism, which is located between the first stacking position and the second stacking position. When the stacking platform moves between the first stacking position and the second stacking position, the diaphragm storage mechanism will be pulled to release the diaphragm, so that the diaphragm is stacked on the pole piece. The two groups of liquid injection parts are respectively located above the first stacking position and the second stacking position. The liquid injection part is provided with a liquid injection lifting cylinder. The cylinder rod of the liquid injection lifting cylinder is connected to a liquid injection box. A liquid injection mechanism is provided in the liquid injection box. The liquid injection mechanism can be lowered by the lifting cylinder to perform atomizing liquid injection on the positive pole piece, diaphragm or negative pole piece on the stacking platform. The atomizing and liquid injection device of the present invention performs atomizing and liquid injection on the pole piece or the diaphragm during the lamination process, so that the pole piece is fully in contact with the electrolyte, the subsequent static infiltration time is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of the structure of an atomizing liquid injection device provided in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of the pole piece transmission part used in an embodiment of the present invention;

[0021] Figure 3A schematic diagram of the structure of the pole piece storage mechanism used in an embodiment of the present invention;

[0022] Figure 4 A front view of a lamination portion used in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the three-dimensional structure of the lamination portion used in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of the atomization liquid injection mechanism used in an embodiment of the present invention;

[0025] Figure 7 This is a schematic structural diagram from another angle of the atomization liquid injection mechanism used in an embodiment of the present invention.

[0026] Among them, the reference numerals in the figures are as follows:

[0027] 1. Transport rack; 2. Transport belt; 3. Fourth linear module; 4. Electric turntable; 5. Stacking lift cylinder; 6. Diaphragm roller; 7. Liquid injection lift cylinder; 8. Third linear module; 9. Clamping assembly; 901. Fixed rack; 902. Clamping cylinder; 903. Movable clamping claw; 904. Fixed clamping claw; 10. Stacking suction cup; 11. Liquid injection box; 12. Pressing cylinder; 13. Movable table; 14. First linear module; 15. Fixed table; 16. Transport wheel; 17. Pushing suction cup; 18. Push rod; 19. Pushing cylinder; 20. Horizontal frame rod; 21. Cutting lift cylinder; 22. Cutter; 23. Push rod ; 24. Storage block; 25. Second gear; 26. Belt; 27. Positioning piece; 28. Bracket; 29. ​​Positioning groove; 30. One-way bearing; 31. Claw; 32. Baffle; 33. First gear; 34. Fixed seat; 35. First clamping roller; 36. Second transfer roller; 37. First transfer roller; 38. Second clamping roller; 39. Pressing claw; 40. Second linear module; 41. Avoidance cylinder; 42. Adjustment cylinder; 43. Liquid injection rack; 44. Slide rod; 45. Sliding seat; 46. Atomizing nozzle; 47. Vertical guide groove; 48. Oblique guide groove; 49. Rolling wheel; 50. Adjustment rack. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0029] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0030] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0031] The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. The directions or positional relationships indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0034] The atomization liquid injection process and device provided by the present invention are now described.

[0035] The first embodiment of the present invention provides an atomization liquid injection process, comprising the following steps:

[0036] S01, obtaining a positive electrode sheet, a negative electrode sheet, an electrolyte and a separator;

[0037] S02, stacking the positive electrode sheet, the separator and the negative electrode sheet in sequence, with a separator provided between each upper and lower adjacent positive electrode sheet and negative electrode sheet, and spraying the electrolyte onto the positive electrode sheet or the separator each time the positive electrode sheet and the separator are stacked, and spraying the electrolyte onto the negative electrode sheet or the separator each time the negative electrode sheet and the separator are stacked, and the sprayed electrolyte is attached to the positive electrode sheet, the negative electrode sheet or the separator in the form of fine beads, so as to prepare a bare battery cell while injecting the electrolyte;

[0038] S03, installing the bare battery cell into the shell.

[0039] Compared with the prior art, the atomization liquid injection process provided in this embodiment is atomized and injected with electrolyte into the positive electrode sheet diaphragm or negative electrode sheet while laminating the positive electrode sheet, diaphragm and negative electrode sheet. Taking the stacking of the positive electrode sheet and the diaphragm as an example, before stacking the positive electrode sheet on the diaphragm, the diaphragm is first atomized and sprayed with electrolyte, and the electrolyte adheres to the diaphragm in the form of fine beads, and then the positive electrode sheet is stacked on the diaphragm; the positive electrode sheet can also be atomized and sprayed with electrolyte after the positive electrode sheet is stacked on the diaphragm. The present invention obtains a bare battery cell by atomizing and injecting liquid while laminating, first atomizing and injecting liquid and then putting it into the shell, so that the electrode sheet can be fully in contact with the electrolyte during the injection process, reducing the subsequent static infiltration time and improving production efficiency.

[0040] In this embodiment, during the lamination of the positive electrode sheet and the diaphragm, and the negative electrode sheet and the diaphragm, the negative electrode sheet and the positive electrode sheet may be sprayed with electrolyte by atomization only after the negative electrode sheet and the positive electrode sheet are placed on the diaphragm. Alternatively, the diaphragm may be sprayed with electrolyte by atomization before the negative electrode sheet and the positive electrode sheet are placed on the diaphragm. Alternatively, the diaphragm, the positive electrode sheet, and the negative electrode sheet may all be sprayed with electrolyte by atomization.

[0041] In this embodiment, after the stacking and atomization liquid injection are completed, the battery core is placed in the shell. After the battery core is placed in the shell, a small amount of liquid can be added to the battery core in the shell as needed.

[0042] like Figure 1 and Figures 4 to 5As shown, based on the same inventive concept, an embodiment of the present application further provides an atomizing liquid injection device, including a stacking portion and two groups of liquid injection portions, the stacking portion is provided with a first linear module 14, a stacking platform is provided on the first slider of the first linear module 14, the stacking platform can slide to the first stacking position and the second stacking position with the first slider, when the stacking platform slides to the first stacking position or the second stacking position, the pole piece can be stacked on the diaphragm on the stacking platform, a diaphragm storage mechanism is provided between the first stacking position and the second stacking position, the free end of the diaphragm in the diaphragm storage mechanism is placed on the stacking platform, a plurality of pressing mechanisms are provided on the first slider, and the plurality of pressing mechanisms are respectively located on both sides of the stacking platform On the side, the pressing mechanism is used to press the positive electrode sheets, diaphragms and negative electrode sheets stacked in sequence on the stacking table. When the stacking table slides between the first stacking position and the second stacking position with the first slider, the diaphragm storage mechanism will be pulled to release the diaphragm so that the diaphragm is stacked on the positive electrode sheets or the negative electrode sheets; the two groups of injection parts are respectively located above the first stacking position and the second stacking position, and the injection part is provided with a liquid injection lifting cylinder 7, and the cylinder rod of the liquid injection lifting cylinder 7 is connected to a liquid injection box 11, and a liquid injection mechanism is provided in the liquid injection box 11. The liquid injection box 11 is used to cover the stacking table that slides to the bottom thereof, and the liquid injection mechanism is used to atomize and inject liquid to the positive electrode sheets, diaphragms or negative electrode sheets on the stacking table.

[0043] Compared with the prior art, the atomizing and liquid injection device provided in this embodiment can be applied to the atomizing and liquid injection process to perform atomizing and liquid injection on the pole piece or the diaphragm during the lamination process. The atomizing and liquid injection device includes a lamination part and two groups of liquid injection parts. The lamination part is provided with a first linear module 14. The first slider on the first linear module 14 can move horizontally. The first slider is provided with a lamination table and a plurality of pressing mechanisms. The plurality of pressing mechanisms are used to press the diaphragms and pole pieces stacked on the lamination table. The lamination table can slide with the first slider to the first lamination position and the second lamination position for stacking the pole pieces. The stacking part also includes a diaphragm storage mechanism. The diaphragm storage mechanism is located between the first lamination position and the second lamination position. When the lamination table moves between the first lamination position and the second lamination position, it will pull the diaphragm storage mechanism to release the diaphragm so that the diaphragm is stacked on the pole piece. The two groups of liquid injection parts are respectively located above the first stacking position and the second stacking position. The liquid injection part is provided with a liquid injection lifting cylinder 7. The cylinder rod of the liquid injection lifting cylinder 7 is connected to a liquid injection box 11. A liquid injection mechanism is provided in the liquid injection box 11. The liquid injection mechanism can perform atomization liquid injection on the positive electrode sheet, diaphragm or negative electrode sheet on the stacking platform through the lowering of the lifting cylinder. The atomization liquid injection device of the present invention performs atomization liquid injection on the electrode sheet or diaphragm during the stacking process, so that the electrode sheet is fully in contact with the electrolyte, reducing the subsequent static immersion time and improving production efficiency.

[0044] In this embodiment, it is assumed that the first stacking position is used to stack negative electrode sheets, and the second stacking position is used to stack positive electrode sheets. The diaphragm storage mechanism is arranged between the first stacking position and the second stacking position. A diaphragm is arranged in the diaphragm storage mechanism. One end of the diaphragm is fixed and the other end is freely released. Initially, the free end of the diaphragm is fixed on the stacking table. When the stacking table slides to the first stacking position, the injection lifting cylinder 7 above the first stacking position drives the injection box 11 thereon to move down, and the diaphragm on the first stacking position of the box is sprayed with electrolyte by atomization. After the atomization and spraying is completed, the injection box 11 moves up. Then, the positive electrode sheet can be manually stacked on the diaphragm of the stacking table. After the placement is completed, the electrolyte is sprayed on the positive electrode sheet by atomization, and the pressing mechanism presses the diaphragm and the positive electrode sheet on the placement table. Then, the first slider drives the stacking table to move to the second stacking position. During the movement of the stacking table, the diaphragm storage mechanism releases the diaphragm so that the diaphragm covers the positive electrode sheet, and then the negative electrode sheet can continue to be stacked thereon. During this process, the liquid injection box 11 above the second stacking position can be used to atomize and inject liquid into the diaphragm covering the positive electrode sheet and the negative electrode sheet.

[0045] like Figure 5 As shown, a specific embodiment provided by the present invention on the basis of the second embodiment is as follows: four groups of pressing mechanisms are arranged, and the four groups of pressing mechanisms are symmetrically arranged on both sides of the stacking table in pairs, and the pressing mechanisms include a second linear module 40 and a pressing cylinder 12. The second linear module 40 is arranged on the first slider, and the sliding direction of the second slider of the second linear module 40 is perpendicular to the sliding direction of the first slider; the pressing cylinder 12 is arranged on the second slider, and a pressing claw 39 is arranged on the cylinder rod of the pressing cylinder 12. The pressing cylinder 12 is used to push the pressing claw 39 to move up and down, and the second slider is used to drive the pressing claw 39 to be inserted above the stacking table or away from the stacking table.

[0046] In this embodiment, the pressing process of the pressing mechanism is as follows: assuming that in the initial state, the stacking platform is located at the first stacking position, and the pressing claws 39 of the four groups of pressing and fixing mechanisms all press the diaphragm. After the positive electrode sheets are stacked on the diaphragm, the two groups of pressing mechanisms farther away from the second stacking position among the four groups of pressing mechanisms remain stationary, and the second sliders of the two groups of pressing mechanisms closer to the second stacking position move synchronously in the direction away from the stacking platform to pull the pressing claws 39 out of the diaphragm, and the pressing cylinder 12 pushes the clamping claws 31 upward, and then the second slider moves toward the stacking platform, and the clamping claws 31 extend above the positive electrode sheets, and then the pressing cylinder 12 drives the clamping claws 31 to move downward and press the positive electrode sheets to complete the fixation. After the positive electrode sheets are stacked, the stacking platform moves to the second stacking position, and the diaphragm released by the diaphragm storage mechanism is folded to cover the positive electrode sheets with the two clamping claws 31 farther away from the first stacking position as the axis. Then place the negative electrode sheet on the diaphragm. The two sets of pressing mechanisms farther away from the first stacking position among the four sets of pressing mechanisms remain stationary, and the second sliders of the two sets of pressing mechanisms closer to the first stacking position move synchronously in the direction away from the stacking table, and the pressing claw 39 is pulled out from the diaphragm. The pressing cylinder 12 pushes the clamping claw 31 to move upward, and then the second slider moves toward the stacking table, and the clamping claw 31 extends above the negative electrode sheet. Then the pressing cylinder 12 drives the clamping claw 31 to move downward and press the negative electrode sheet to complete the fixation, and then the above operations are repeated repeatedly to stack and press.

[0047] like Figure 4 and Figure 5 As shown, a specific embodiment of the present invention provided on the basis of the second embodiment is as follows: the diaphragm storage mechanism includes a fixed seat 34, a diaphragm roller 6, two first clamping rollers 35, a first transfer roller 37, a second transfer roller 36 and two second clamping rollers 38, the diaphragm roller 6 is rotatably arranged on the fixed seat 34, the diaphragm is wound on the diaphragm roller 6, one end of the diaphragm is fixed on the diaphragm roller 6, and the other end is freely released; the two first clamping rollers 35 are arranged at the lower left of the diaphragm roller 6, and are rotatably connected to the fixed seat 34, the two first clamping rollers 35 are arranged up and down, and a first gap for the diaphragm to pass through is provided between the two clamping rollers; the first transfer roller 37 is connected to the fixed seat 3 The first transfer roller 37 is rotatably connected to the fixed seat 34, and the second transfer roller 36 is located at the lower right of the two first clamping rollers 35; the second transfer roller 36 is rotatably connected to the fixed seat 34, and the second transfer roller 36 is located at the lower left of the first transfer roller 37; the two second clamping rollers 38 are rotatably connected to the fixed seat 34, and the two second clamping rollers 38 are arranged side by side, and the two second clamping rollers 38 are located in the middle of the first stacking position and the second stacking position, and a second gap for the diaphragm to pass through is provided between the two second clamping rollers 38; the free end of the diaphragm passes through the first gap, bypasses the first transfer roller 37, the second transfer roller 36, and passes through the second gap in sequence, and is pressed on the stacking table by the pressing mechanism.

[0048] In this embodiment, the free end of the diaphragm passes through the first slit, bypasses the first transfer roller 37, the second transfer roller 36, and passes through the second slit in sequence, and is then pressed on the lamination table by the pressing mechanism. The diaphragm is released by moving in a Z shape under the guidance of the two first clamping rollers 35, the first transfer roller 37, the second transfer roller 36, and the two second clamping rollers 38.

[0049] In this embodiment, the diaphragm roller 6 is frictionally connected to the fixed seat 34, and the diaphragm roller 6 cannot rotate without external pulling. When the stacking table moves between the first stacking position and the second stacking position, the diaphragm will be pulled, causing the diaphragm roller 6 to rotate and release the diaphragm, so that the diaphragm is stacked on the positive electrode sheet or the negative electrode sheet.

[0050] like Figure 6 to Figure 7 As shown, the present invention provides a specific embodiment based on the second embodiment as follows: the liquid injection mechanism includes a liquid injection frame 43, a slide bar 44, a plurality of sliding seats 45, an adjustment frame 50, and an adjustment cylinder 42. The liquid injection frame 43 is connected to the liquid injection box 11 and is arranged in the liquid injection box 11; the slide bar 44 is arranged on the liquid injection frame 43; a plurality of sliding seats 45 are slidably arranged on the slide bar 44, each sliding seat 45 is provided with an atomizing nozzle 46, and each sliding seat 45 is provided with a rolling wheel 49 for rotation at the back; the adjustment frame 50 is provided with a vertical guide groove 47 and a plurality of oblique guide grooves 48, the plurality of oblique guide grooves 48 are divided into two groups, the two groups of oblique guide grooves 48 are respectively located on both sides of the vertical guide groove 47, and are symmetrical with the vertical guide groove 47 as the axis, and a rolling wheel 49 is rollingly arranged in the vertical guide groove 47 and each oblique guide groove 48; the adjusting cylinder 42 is arranged on the liquid injection frame 43, and is connected to the adjusting frame 50, and the adjusting cylinder 42 is used to push the adjusting frame 50 to move up and down, drive the sliding seat 45 to move along the sliding rod 44, and adjust the distance between each atomizing nozzle 46.

[0051] In this embodiment, since the adjustment frame 50 is provided with a vertical guide groove 47 and a plurality of oblique guide grooves 48, the plurality of oblique guide grooves 48 are divided into two groups, and the two groups of oblique guide grooves 48 are symmetrical with the vertical guide groove 47 and are respectively located on both sides of the vertical guide groove 47. The rolling wheels 49 on the back of each sliding seat 45 are respectively rollingly set in the oblique guide groove 48 and the vertical guide groove 47, and no matter whether it is an oblique guide groove 48 or a vertical guide groove 47, only one rolling wheel 49 can be set in each. The plurality of sliding seats 45 are all slidingly set on the slide rod 44. When the adjustment cylinder 42 drives the adjustment frame 50 to move up and down, under the transmission of the oblique guide groove 48, the vertical guide groove 47 and the rolling wheel 49, the sliding seat 45 can be driven to move, and the distance between each sliding seat 45 is adjusted, thereby adjusting the distance between each atomizing nozzle 46 to adjust the atomizing injection range.

[0052] like Figure 6 to Figure 7As shown, a specific embodiment provided by the present invention on the basis of the second embodiment is as follows: two slide bars 44 are provided, the two slide bars 44 are provided in parallel, a plurality of slide seats 45 are provided on each slide bar 44, an adjustment frame 50 is located between the two slide bars 44, the adjustment frame 50 is a U-shaped structure, and vertical guide grooves 47 and a plurality of inclined guide grooves 48 are provided on two parallel vertical plates of the adjustment frame 50, and each vertical plate is connected to the slide seat 45 on the same side through a rolling wheel 49.

[0053] In this embodiment, the adjustment frame 50 is set as a U-shaped structure, and vertical guide grooves 47 and multiple oblique guide grooves 48 are provided on two mutually parallel vertical plates of the adjustment frame 50, and two slide bars 44 are provided in parallel, and the two slide bars 44 are respectively located on both sides of the adjustment frame 50. Multiple sliding seats 45 of the same number are slidably provided on each slide bar 44, and each vertical plate is connected to the sliding seat 45 on the same side through a rolling wheel 49, and a rolling wheel 49 is provided in each vertical guide groove 47 and oblique guide groove 48. Two rows of atomizing nozzles 46 can be provided through the adjustment frame 50 with a U-shaped structure, and the spacing between the two rows of atomizing liquid injection nozzles can be adjusted synchronously, which can expand the liquid injection range and enable more uniform liquid injection spraying.

[0054] like Figures 1 to 3 As shown, a specific embodiment provided by the present invention on the basis of the second embodiment is as follows: the atomizing liquid injection device also includes a pole piece transmission part, two third linear modules 8, and two stacking lifting cylinders 5. The pole piece transmission part is used to transmit the positive pole piece and the negative pole piece. The positive pole piece and the negative pole piece are alternately placed on the pole piece transmission part in sequence. The transmission direction of the pole piece transmission part is parallel to the moving direction of the stacking table; one of the third linear modules 8 is located above the first stacking position, and the other third linear module 8 is located above the second stacking position. A third slider is slidably provided on the third linear module 8. The sliding direction of the third slider is perpendicular to the moving direction of the stacking table. The two groups of liquid injection lifting cylinders 7 of the liquid injection parts are respectively arranged on two third sliders; the two stacking lifting cylinders 5 are respectively arranged on the two third sliders, and the cylinder rod of each stacking lifting cylinder 5 is connected to a stacking suction cup 10, which is used to suck the pole piece. The stacking lifting cylinder 5 is used to drive the stacking suction cup 10 to move up and down to contact the pole piece. The third linear module 8 is used to drive the stacking suction cup 10 to move between the pole piece transmission part and the stacking station, so that the stacking suction cup 10 can transport the pole piece on the pole piece transmission part to the stacking place for stacking.

[0055] In this embodiment, the atomizing injection device also includes a pole piece transmission part, and the positive pole piece and the negative pole piece are alternately placed on the pole piece transmission part, and move forward with the pole piece transmission part. A third linear module 8 is respectively arranged above the first stacking position and the second stacking position, and the moving directions of the third sliders of the two third linear modules 8 are parallel and perpendicular to the moving direction of the stacking platform and the transmission direction of the pole piece transmission part. Each third slider is provided with an injection lifting cylinder 7 and a stacking lifting cylinder 5 of the injection part. When the stacking lifting cylinder 5 moves to the top of the pole piece transmission part with the third slider, the injection lifting cylinder 7 is just located above the corresponding first stacking position or the second stacking position, and the stacking lifting cylinder 5 drives the stacking suction cup 10 to absorb the pole piece below, and the injection lifting cylinder 7 can perform atomizing injection below. When the third slider moves in the opposite direction, the stacking lifting cylinder 5 will move to the top of the corresponding first stacking position or the second stacking position, and the pole piece can be released by the stacking suction cup 10, and the pole piece can be stacked on the diaphragm.

[0056] like Figures 1 to 3 As shown, a specific embodiment provided by the present invention on the basis of the second embodiment is as follows: the pole piece transmission part includes a transport frame 1, two transport wheels 16, two groups of transport belts 2, and multiple positioning members 27. The transport frame 1 is a hollow structure, and a transmission space is provided inside the transport frame 1; the two transport wheels 16 are rotatably connected to the transport frame 1 and are located in the transmission space; the two groups of transport belts 2 are located in the transmission space, and are both connected to the two transport wheels 16 with transmission, and the two groups of transport belts 2 are arranged at intervals; the positioning members 27 are L-shaped structures, and four positioning members 27 are grouped together. Two positioning members 27 of the same group are arranged on each transport belt 2, and the positioning members 27 of the same group are symmetrical in pairs, and the corners of the positioning members 27 of the same group form a pole piece placement position for positioning the pole piece.

[0057] In this embodiment, a plurality of positioning spaces are provided on the two spaced apart conveyor belts 2, and the positioning members 27 are of an L-shaped structure. Four positioning members 27 form a group, and two positioning members 27 of the same group are provided on each conveyor belt 2, and the positioning members 27 of the same group are symmetrical in pairs, so that the corners of the positioning members 27 of the same group enclose a pole piece placement position for positioning the pole piece. A plurality of pole piece placement positions are provided, which are spaced apart along the moving direction of the conveyor belt 2, and the positive pole piece and the negative pole piece are alternately placed in adjacent pole piece placement positions, so that the pole piece can be successfully positioned, and the accuracy of the pole piece stacking position is ensured. The stacking suction cup 10 on one of the third linear modules 8 can only suck the positive pole piece and transport the positive pole piece to the first stacking position; the stacking suction cup 10 on the other third linear module 8 can only suck the negative pole piece and transport the negative pole piece to the second stacking position.

[0058] like Figures 1 to 3As shown, a specific embodiment provided by the present invention on the basis of the second embodiment is as follows: the electrode transmission part also includes two groups of electrode storage mechanisms, the two groups of electrode storage mechanisms are used to store positive electrode plates and negative electrode plates respectively, the two groups of electrode storage mechanisms are connected to the transport frame 1, and are respectively located on the sliding paths of the two third sliders, the electrode storage mechanism includes two brackets 28, storage blocks 24, push-up suction cups 17, push-up cylinders 19 and a driving structure, the two brackets 28 are arranged on the transport frame 1, the two brackets 28 are respectively arranged on both sides of the transmission space, each bracket 28 is rotatably provided with two rotating shafts, the two rotating shafts are arranged up and down, each rotating shaft is provided with two pulleys at intervals, the upper and lower pulleys on the brackets 28 on the same side are a group, and the pulleys in the same group are connected by a belt 26 belt drive; each belt 26 is provided with a plurality of storage blocks 24, and the plurality of storage blocks 24 are provided on the belt 26. The storage blocks 24 are arranged at intervals along the transmission direction of the belt 26, and a positioning groove 29 is provided at one corner of the storage block 24. The inner wall of the positioning groove 29 is an inclined surface. The four storage blocks 24 on the four belts 26 and located in the same plane are a group, and the positioning grooves 29 on the storage blocks 24 of the same group form a pole piece storage space. The inner wall of the positioning groove 29 is used for contacting with the corner of the pole piece, guiding and limiting the pole piece; the push-up suction cup 17 is arranged in the transmission space and is located below the pole piece transmitted by the belt 26, and is used to absorb the pole piece above; the push-up cylinder 19 is connected to the push-up suction cup 17, and is used to push the push-up suction cup 17 up and down, absorb the pole piece and extend the pole piece into the four belts 26; the driving structure is used to drive the four belts 26 to drive synchronously, so that the storage blocks 24 of the same group are transferred to the bottom of the pole piece extending into the belt 26, and the pole piece is stored in the pole piece storage space.

[0059] In this embodiment, the electrode transmission unit also includes two sets of electrode storage mechanisms, which are used to store positive electrode sheets and negative electrode sheets respectively. Some electrode sheets are stored in advance through the electrode storage mechanisms, one of which stores positive electrode sheets and the other stores negative electrode sheets. Once the transmission of the conveyor belt 2 or the previous process has problems, the stacking and injection processes will not be affected temporarily, which saves time for rapid adjustment. However, if the electrode sheets are only stored in a stack, friction may occur between the upper and lower electrode sheets when they are sucked, causing damage to the electrode sheets. In this embodiment, the electrode storage mechanism includes two brackets 28, a storage block 24, a push-up suction cup 17, a push-up cylinder 19 and a drive structure. Two brackets 28 are respectively arranged on both sides of the transmission space, and two belts 26 for transmission are arranged on each bracket 28. The four belts 26 are symmetrical in pairs and on the same level. A storage block 24 is arranged on each belt 26. Each storage block 24 extends into the upper part of the transmission space inside the transport frame 1 and is provided with a positioning groove 29 at a corner close to other storage blocks 24. The inner wall of the positioning groove 29 is an inclined surface. The inclined surfaces of the four positioning grooves 29 on the same level enclose the pole piece storage space. The four storage blocks 24 on the four belts 26 and located in the same plane are a group, and multiple groups of storage blocks 24 are arranged along the transmission direction of the belts 26. The push-up suction cup 17 is arranged in the transmission space and is located below the pole piece transmitted by the belt 26. It is used to absorb the pole piece above. The push-up cylinder 19 is connected to the push-up suction cup 17.

[0060] In this embodiment, when the push-up suction cup 17 absorbs the pole piece above and pushes the pole piece to move up between the four belts 26, the driving structure drives the four groups of belts 26 to move synchronously, and a group of storage blocks 24 is transferred to the bottom of the pole piece on the push-up suction cup 17 through the belt 26 transmission, and then the push-up suction cup 17 releases the pole piece, and the pole piece falls into the pole piece storage space under the guidance of the inclined surface of the positioning groove 29. The stacking suction cup 10 moved above the pole piece storage mechanism can absorb the pole piece placed at the top of the pole piece storage mechanism.

[0061] like Figures 1 to 3As shown, a specific embodiment of the present invention provided on the basis of the second embodiment is as follows: the driving structure includes two mounting frames, two first gears 33, two second gears 25, two claws 31, two baffles 32, two levers 23 and a crossbar 20, the two mounting frames are connected to the transport frame 1, and are respectively located on the outsides of the two brackets 28, and a connecting shaft is rotatably provided on the mounting frames; the two first gears 33 are respectively coaxially connected to the rotating shafts located below on the two brackets 28; the two second gears 25 are respectively rotatably connected to the two connecting shafts through two one-way bearings 30, and the second gears 25 are meshed with the first gears 33 in a one-to-one correspondence; a claw 31 is rotatably provided on each mounting frame, and the end of the claw 31 extends into the gear teeth of the second gear 25 on the same mounting frame; a baffle is provided on each mounting frame 32, the baffle plate 32 is used to prevent the claw 31 from rotating downward; the two levers 23 are respectively connected to the two connecting shafts, and the two levers 23 are set on the mounting frame under the action of gravity, and one end of the lever 23 extends out of the mounting frame; the cross frame rod 20 is connected to the cylinder rod of the push-up cylinder 19, the cross frame rod 20 is located below the push-up suction cup 17, and push rods 18 are provided at both ends of the cross frame rod 20; when the two push rods 18 move up with the cylinder rod of the push-up cylinder 19, the two push rods 18 push the two levers 23 to rotate, and the second gear 25 rotates with the connecting shaft under the action of the one-way bearing 30, driving the first gear 33 and the belt 26 to move; when the two push rods 18 move down with the cylinder rod of the push-up cylinder 19, the lever 23 rotates in the opposite direction under the action of gravity, and the one-way bearing 30, the claw 31 and the baffle plate 32 cooperate with each other to keep the second gear 25 stationary.

[0062] In this embodiment, two rotating shafts are rotatably arranged on each bracket 28, and the two rotating shafts are arranged up and down. Two pulleys are arranged at intervals on each rotating shaft. The pulleys on the bracket 28 on the same side are grouped together, and the pulleys in the same group are connected by belt 26. A first gear 33 is coaxially arranged on the rotating shaft located below each bracket 28. The driving structure includes two mounting frames, and the two mounting frames are respectively located on the outsides of the two brackets 28. A connecting shaft is rotatably arranged on each mounting frame, and a one-way bearing 30 and a second gear 25 are arranged on the connecting shaft. The second gear 25 is coaxially connected to the connecting shaft through the one-way bearing 30, and the second gear 25 is meshed with the first gear 33 on the same side. A shifting rod 23 is arranged on each connecting shaft, and the shifting rod 23 is mounted on the mounting frame under the action of gravity, and one end of the shifting rod 23 extends out of the mounting frame. A claw 31 is rotatably arranged on each mounting frame, and the end of the claw 31 extends into the gear teeth of the second gear 25 on the same mounting frame; a baffle 32 is arranged on each mounting frame, and the baffle 32 is used to prevent the claw 31 from rotating downward. When the external force pushes the lever 23 to rotate upward, the second gear 25 rotates synchronously with the connecting shaft under the action of the one-way bearing 30, driving the first gear 33 to rotate, thereby driving the belt 26 to transmit. Because the claw 31 is rotatably arranged on the mounting frame and the baffle 32 is located below the claw 31, the claw 31 does not prevent the second gear 25 from rotating. When the external force is withdrawn, under the action of gravity, the lever 23 rotates in the opposite direction, driving the connecting shaft to rotate in the opposite direction. Under the action of the one-way bearing 30, the connecting shaft can be independently reversed without being restricted by the second gear 25. At the same time, because the baffle 32 prevents the claw 31 from rotating downward, the claw 31 is inserted between the gear teeth of the second gear 25, so that the second gear 25 cannot rotate in the opposite direction and remains stationary, and only the connecting shaft returns to its position by itself.

[0063] In this embodiment, the crossbar 20 is connected to the cylinder rod of the push-up cylinder 19, and the crossbar 20 is located below the push-up suction cup 17. Push rods 18 are provided at both ends of the crossbar 20. Therefore, when the push-up suction cup 17 moves upward with the push-up cylinder 19 to absorb the pole piece, the push rod 18 can synchronously push the lever 23 to rotate upward, so that the belt 26 follows and receives the pole piece. When the push-up suction cup 17 moves downward with the push-up cylinder 19, the connecting shaft automatically returns to its original position.

[0064] like Figure 1 and Figures 4 to 5As shown, a specific embodiment provided by the present invention on the basis of the second embodiment is as follows: the stacking platform includes two fixed platforms 15 and a movable platform 13, the two fixed platforms 15 are adjacent to the first slider and are respectively located on both sides of the movable platform 13, and the movable platform 13 and the two fixed platforms 15 can be assembled into a square stacking platform. A avoidance cylinder 41 is arranged on the first slider, and the avoidance cylinder 41 is connected to the movable platform 13, and is used to push the movable platform 13 to move up and down. When the movable platform 13 moves upward to the same plane as the fixed platform 15, the movable platform 13 and the fixed platform 15 are assembled into a stacking platform. Along the sliding direction of the first slider, a fourth linear module 3 is arranged on the outer side of the first linear module 14, the fourth linear module 3 is on the same straight line with the first linear module 14, and a fourth slider is slidably arranged on the fourth linear module 3. An electric turntable 4 is arranged on the fourth slider, and a clamping assembly 9 is arranged on the electric turntable 4, and the clamping assembly 9 can clamp the stacked battery cells on the stacking platform when the movable platform 13 descends. The clamping assembly 9 includes a fixed frame 901, a fixed clamping jaw 904, a movable clamping jaw 903 and a clamping cylinder 902. The fixed frame 901 is arranged on the electric turntable 4, the fixed clamping jaw 904 is arranged on the fixed frame 901, and a through hole is arranged on the fixed clamping jaw 904. The electric turntable 4 is also provided with a clamping cylinder 902, and the cylinder rod of the clamping cylinder 902 passes through the through hole and is connected to the movable clamping jaw 903. The clamping cylinder 902 is used to drive the movable clamping jaw 903 to move downward to achieve clamping.

[0065] In this embodiment, when the lamination is completed, the avoidance cylinder 41 drives the movable table 13 to move downward. The fourth slider moves toward the lamination table, so that the fixed clamp 904 is inserted above the movable table 13 and below the battery cell that has completed the lamination, and the movable clamp 903 is located above the battery cell. The clamping cylinder 902 drives the movable clamp 903 to clamp the battery cell. The pressing and fixing mechanism on the first slider releases the lamination and the battery cell that has been injected, and then the fourth slider moves away from the lamination table to pull out the battery cell, and the diaphragm can be manually cut.

[0066] In this embodiment, a diaphragm cutting mechanism is also provided, and the diaphragm cutting mechanism includes a cutting lifting cylinder 21 and a cutter 22. The cutting lifting cylinder 21 is located above the junction of the first linear module 14 and the fourth linear module 3, and the cutting lifting cylinder 21 is connected to the cutter 22. When the fixed clamp 904 and the movable clamp 903 clamp the battery cell and pull the battery cell out of the lamination table, the cutting lifting cylinder 21 moves down and the cutter 22 cuts the diaphragm.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An atomizing liquid injection device, characterized in that: include: A lamination section, wherein the lamination section is provided with a first linear module (14), a lamination platform is provided on a first slider of the first linear module (14), the lamination platform can slide with the first slider to a first lamination position and a second lamination position, when the lamination platform slides to the first lamination position or the second lamination position, a pole piece can be stacked on the diaphragm on the lamination platform, a diaphragm storage mechanism is provided between the first lamination position and the second lamination position, a free end of the diaphragm in the diaphragm storage mechanism is placed on the lamination platform, a plurality of pressing mechanisms are provided on the first slider, the plurality of pressing mechanisms are respectively located on both sides of the lamination platform, the pressing mechanisms are used to press the positive pole piece, the diaphragm and the negative pole piece stacked in sequence on the lamination platform, when the lamination platform slides with the first slider between the first lamination position and the second lamination position, the diaphragm storage mechanism is pulled to release the diaphragm, so that the diaphragm is stacked on the positive pole piece or the negative pole piece; Two groups of liquid injection parts are respectively located above the first stacking position and the second stacking position. The liquid injection parts are provided with a liquid injection lifting cylinder (7). The cylinder rod of the liquid injection lifting cylinder (7) is connected to a liquid injection box (11). A liquid injection mechanism is provided in the liquid injection box (11). The liquid injection box (11) is used to cover the stacking platform that slides below it. The liquid injection mechanism is used to perform atomization liquid injection on the positive electrode sheet, the diaphragm or the negative electrode sheet on the stacking platform.

2. The atomizing liquid injection device according to claim 1, characterized in that: The pressing mechanism is provided with four groups, and the four groups of the pressing mechanism are symmetrically arranged on both sides of the lamination platform in pairs, and the pressing mechanism includes: A second linear module (40) is arranged on the first sliding block, wherein the sliding direction of the second sliding block of the second linear module (40) is perpendicular to the sliding direction of the first sliding block; A pressing cylinder (12) is arranged on the second slide block, and a pressing claw (39) is arranged on the cylinder rod of the pressing cylinder (12). The pressing cylinder (12) is used to push the pressing claw (39) to move up and down, and the second slide block is used to drive the pressing claw (39) to be inserted above the lamination table or away from the lamination table.

3. The atomizing liquid injection device according to claim 1, characterized in that: The diaphragm storage mechanism comprises: Fixed seat (34); A diaphragm roller (6) is rotatably mounted on the fixed seat (34), the diaphragm is wound around the diaphragm roller (6), one end of the diaphragm is fixed to the diaphragm roller (6), and the other end is freely released; Two first clamping rollers (35), the two first clamping rollers (35) being arranged at the lower left of the diaphragm roller (6) and being rotatably connected to the fixing seat (34), the two first clamping rollers (35) being arranged up and down, and a first gap for allowing the diaphragm to pass through being provided between the two clamping rollers; a first transfer roller (37) rotatably connected to the fixed seat (34), the first transfer roller (37) being located to the lower right of the two first clamping rollers (35); a second transfer roller (36) rotatably connected to the fixing seat (34), the second transfer roller (36) being located to the lower left of the first transfer roller (37); Two second clamping rollers (38) are rotatably connected to the fixed seat (34), the two second clamping rollers (38) are arranged side by side, the two second clamping rollers (38) are located in the middle of the first stacking position and the second stacking position, and a second gap for the diaphragm to pass through is provided between the two second clamping rollers (38); The free end of the diaphragm is pressed onto the lamination table by the pressing mechanism after passing through the first slit in sequence, bypassing the first transfer roller (37), the second transfer roller (36), and passing through the second slit.

4. The atomizing liquid injection device according to claim 1, characterized in that: The liquid injection mechanism comprises: A liquid injection rack (43) connected to the liquid injection box (11) and arranged in the liquid injection box (11); A sliding rod (44) is arranged on the liquid injection frame (43); A plurality of sliding seats (45) are slidably mounted on the sliding rod (44), each of the sliding seats (45) is provided with an atomizing nozzle (46), and each of the sliding seats (45) is provided with a rolling wheel (49) on the back thereof for rotation; An adjustment frame (50), the adjustment frame (50) being provided with a vertical guide groove (47) and a plurality of oblique guide grooves (48), the plurality of oblique guide grooves (48) being divided into two groups, the two groups of oblique guide grooves (48) being respectively located on two sides of the vertical guide groove (47) and being symmetrical with the vertical guide groove (47) as an axis, and a rolling wheel (49) being rotatably arranged in the vertical guide groove (47) and each of the oblique guide grooves (48); The adjusting cylinder (42) is disposed on the liquid injection frame (43) and connected to the adjusting frame (50). The adjusting cylinder (42) is used to push the adjusting frame (50) to move up and down, drive the sliding seat (45) to move along the sliding rod (44), and adjust the distance between each of the atomizing nozzles (46).

5. The atomizing liquid injection device according to claim 4, characterized in that: Two sliding rods (44) are provided, and the two sliding rods (44) are arranged in parallel. A plurality of sliding seats (45) are provided on each sliding rod (44). The adjustment frame (50) is located between the two sliding rods (44). The adjustment frame (50) is a U-shaped structure. The two mutually parallel vertical plates of the adjustment frame (50) are provided with the vertical guide groove (47) and a plurality of inclined guide grooves (48). Each vertical plate is connected to the sliding seat (45) on the same side through the rolling wheel (49).

6. The atomizing liquid injection device according to claim 1, characterized in that: The atomizing liquid injection device also includes: A pole piece conveying part, used for conveying the positive pole piece and the negative pole piece, the positive pole piece and the negative pole piece are placed alternately on the pole piece conveying part in sequence, and the conveying direction of the pole piece conveying part is parallel to the moving direction of the lamination table; Two third linear modules (8), one of which is located above the first stacking position, and the other is located above the second stacking position, a third slider is slidably provided on the third linear module (8), the sliding direction of the third slider is perpendicular to the moving direction of the stacking platform, and the two groups of the liquid injection lifting cylinders (7) of the liquid injection parts are respectively provided on two of the third sliders; Two stacking lifting cylinders (5) are respectively arranged on the two third sliding blocks, and the cylinder rod of each stacking lifting cylinder (5) is connected to a stacking suction cup (10), and the stacking suction cup (10) is used to suck the pole piece. The stacking lifting cylinder (5) is used to drive the stacking suction cup (10) to move up and down to contact the pole piece, and the third linear module (8) is used to drive the stacking suction cup (10) to move between the pole piece transmission part and the stacking station, so that the stacking suction cup (10) can move the pole piece on the pole piece transmission part to the stacking position for stacking.

7. The atomizing liquid injection device according to claim 6, characterized in that: The pole piece transmission unit comprises: A transport frame (1), wherein the transport frame (1) is a hollow structure, and a transmission space is provided inside the transport frame (1); Two transport wheels (16) rotatably connected to the transport frame (1) and located in the transmission space; Two sets of conveyor belts (2) are located in the transmission space and are both connected to the two conveyor wheels (16) by belt transmission, and the two sets of conveyor belts (2) are arranged at intervals; A plurality of positioning members (27), wherein the positioning members (27) are of L-shaped structure, four positioning members (27) form a group, two positioning members (27) in the same group are arranged on each of the conveyor belts (2), and the positioning members (27) in the same group are symmetrical in pairs, and the corners of the positioning members (27) in the same group form a pole piece placement position for positioning the pole piece.

8. The atomizing liquid injection device according to claim 7, characterized in that: The electrode sheet transmission unit further comprises two sets of electrode sheet storage mechanisms, the two sets of electrode sheet storage mechanisms are respectively used to store the positive electrode sheets and the negative electrode sheets, the two sets of electrode sheet storage mechanisms are connected to the transport rack (1), and are respectively located on the sliding paths of the two third sliders, the electrode sheet storage mechanisms comprising: Two brackets (28) are arranged on the transport frame (1), and the two brackets (28) are respectively arranged on both sides of the transmission space. Two rotating shafts are rotatably arranged on each bracket (28), and the two rotating shafts are arranged up and down. Two belt (26) wheels are arranged on each rotating shaft at intervals. The upper and lower belt (26) wheels on the brackets (28) on the same side form a group, and the belt (26) wheels in the same group are connected through a belt (26) belt transmission; A storage block (24), wherein each belt (26) is provided with a plurality of the storage blocks (24), the plurality of the storage blocks (24) are arranged at intervals along the transmission direction of the belt (26), a positioning groove (29) is provided at a corner of the storage block (24), the inner wall of the positioning groove (29) is an inclined surface, four storage blocks (24) on the four belts (26) and located in the same plane form a group, the positioning grooves (29) on the storage blocks (24) in the same group enclose a pole piece storage space, and the inner wall of the positioning groove (29) is used to contact the corner of the pole piece, guide the pole piece, and limit the position; A push-up suction cup (17) is disposed in the transmission space and below the pole piece conveyed by the belt (26), and is used to suck the pole piece above; A push-up cylinder (19) connected to the push-up suction cup (17) for pushing the push-up suction cup (17) up and down, sucking the pole piece and extending the pole piece into the space between the four belts (26); The driving structure is used to drive the four belts (26) to transmit synchronously, so that the storage blocks (24) of the same group are rotated under the pole pieces extending between the belts (26), and the pole pieces are stored in the pole piece storage space.

9. The atomizing liquid injection device according to claim 8, characterized in that: The driving structure comprises: Two mounting frames connected to the transport frame (1) and respectively located outside the two brackets (28), and the mounting frames are rotatably provided with connecting shafts; Two first gears (33) are coaxially connected to the rotating shafts located below the two brackets (28), respectively; Two second gears (25), the two second gears (25) being rotatably connected to the two connecting shafts via two one-way bearings (30) respectively, and the second gears (25) being meshed with the first gears (33) in a one-to-one correspondence; Two claws (31), one claw (31) being rotatably disposed on each mounting frame, and an end of the claw (31) extending into a space between the teeth of the second gear (25) on the same mounting frame; two baffles (32), one baffle (32) being provided on each mounting frame, the baffle (32) being used to prevent the claw (31) from rotating downward; Two shifting rods (23) are respectively connected to the two connecting shafts, the two shifting rods (23) are mounted on the mounting frame under the action of gravity, and one end of the shifting rod (23) extends out of the mounting frame; A cross-frame rod (20) connected to the cylinder rod of the ejection cylinder (19), the cross-frame rod (20) being located below the ejection suction cup (17), and push rods (18) being provided at both ends of the cross-frame rod (20); When the two push rods (18) move upward along with the cylinder rod of the push-pushing cylinder (19), the two push rods (18) push the two shifting rods (23) to rotate, and the second gear (25) rotates along with the connecting shaft under the action of the one-way bearing (30), driving the first gear (33) and the belt (26) to move; when the two push rods (18) move downward along with the cylinder rod of the push-pushing cylinder (19), the shifting rod (23) rotates in the opposite direction under the action of gravity, and the one-way bearing (30), the claw (31) and the baffle (32) cooperate with each other to keep the second gear (25) stationary.

10. An atomization liquid injection process, characterized in that: The atomizing liquid injection device according to any one of claims 1 to 9 comprises the following steps: S01, obtaining a positive electrode sheet, a negative electrode sheet, an electrolyte and a separator; S02, stacking the positive electrode sheet, the diaphragm and the negative electrode sheet in sequence, with the diaphragm provided between each of the upper and lower adjacent positive electrode sheets and the negative electrode sheets, and spraying the electrolyte onto the positive electrode sheet or the diaphragm each time the positive electrode sheet and the diaphragm are stacked, and spraying the electrolyte onto the negative electrode sheet or the diaphragm each time the negative electrode sheet and the diaphragm are stacked, and the sprayed electrolyte is attached to the positive electrode sheet, the negative electrode sheet or the diaphragm in the form of fine beads, so as to prepare a bare battery cell while injecting the electrolyte; S03, installing the bare battery cell into a shell.

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