A high specific energy lead-acid battery and a grid continuous coating line using the battery

Abstract

The present invention relates to the technical field of battery processing equipment, and in particular to a high specific energy lead-acid battery and a grid continuous coating line using the battery, comprising: a conveying mechanism, the conveying mechanism is used to convey the grid and the coated paper; a continuous coating mechanism, the continuous coating mechanism is arranged on the conveying mechanism and is used to output the lead paste, the continuous coating mechanism includes an output component for outputting the lead paste and a shaping component that cooperates with the output component to realize the shape constraint of the lead paste; a laminating mechanism, the laminating mechanism is provided with two groups located on both sides of the continuous coating mechanism and used for laminating the coated paper. The technical problems of unstable quality and easy leakage of lead paste from the edge during the continuous coating process of the grid are solved.

Description

Technical Field

[0001] The invention relates to the technical field of battery processing equipment, and in particular to a high specific energy lead-acid battery and a grid continuous coating line using the battery. Background Art

[0002] High specific energy lead-acid battery refers to a lead-acid battery with a higher energy density under the same volume, which can provide more electrical energy. This type of battery is usually composed of smaller battery cells, such as 12Ah or higher capacity batteries, which are tightly packaged together to obtain a higher total capacity and a higher voltage output; the advantages of high specific energy lead-acid batteries are light weight, low price, long service life, strong reliability, and easy maintenance; the plate is the main component of the lead-acid battery. The plate stores electrical energy when the battery is charged and releases electrical energy when the battery is discharged, and can be cycled repeatedly for many times, thus constituting the charge and discharge function of the lead-acid battery; in the production process of the plate, there is a process called plate coating. The conventional production method is to coat the single plate separately. The most advanced plate coating method at present is the continuous coating method, which is to make the grid into a continuous mesh belt, and the plate is coated continuously during coating, and then cut and collected after continuous coating.

[0003] The patent document with patent number CN110640121A discloses a grid continuous casting and coating production line, including a frame, a movable mold is provided in the frame, and a demolding oil spray assembly is provided in the frame above the movable mold, a lead delivery pipe assembly is provided on one side of the frame, and a fixed mold matching the movable mold is provided on the lead delivery pipe assembly, a pressurizer is provided on the frame outside the fixed mold, a lead-out roller assembly is provided below the inner side of the frame, and a cooling trough assembly is provided in the frame below the lead-out roller assembly, and an oil-water cooler is provided on one side of the frame.

[0004] However, in actual use, after the grid is coated, it will be pressed by the pressing roller, which will cause the lead paste to seep out from the edge and the perforations of the coated paper, affecting the quality of the finished product. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art. By setting a continuous coating mechanism and a laminating mechanism, the lead paste is coated in layers, and the surface of the lead paste is treated to facilitate the lamination of the coated board paper and prevent the lead paste from overflowing from both sides and pinholes during extrusion, thereby solving the technical problems of unstable quality during the continuous coating process of the grid and easy leakage of lead paste from the edge.

[0006] In view of the above technical problems, the technical solutions adopted are as follows:

[0007] A grid continuous coating line for high specific energy lead-acid batteries, comprising:

[0008] A conveying mechanism, the conveying mechanism is used to convey the grid and the coated paper;

[0009] A continuous coating mechanism, which is arranged on the conveying mechanism and is used for outputting the lead paste, and comprises an output component for outputting the lead paste and a shaping component that cooperates with the output component to realize shape constraint of the lead paste;

[0010] The laminating mechanism comprises two groups which are respectively located at two sides of the continuous coating mechanism and are used for laminating coated board paper through a double-sided laminating process.

[0011] Preferably, the conveying mechanism is a hole-type structure and uses a slight negative pressure to adsorb the grid and output it stably backward. It includes two groups of stabilizing rollers arranged in front of the continuous coating mechanism and used to keep the grid stable, a group of steering rollers arranged behind the stabilizing rollers and used to tilt the grid downward, and a group of pressing rollers arranged behind the steering rollers and used to press the grid, lead paste and coated paper.

[0012] Preferably, the conveying mechanism enables the movement of the grid to achieve a "horizontal-inclined downward-horizontal" trajectory, and the two sets of laminating mechanisms are respectively located in the "horizontal" position at the front and rear ends, and the middle of the continuous coating mechanism is opposite to the "inclined downward" position of the grid.

[0013] Preferably, the output component includes a hopper for stirring the lead paste, a plurality of stirring shafts arranged inside the hopper, an extrusion roller arranged at the bottom of the hopper, and two groups of discharge troughs arranged at the bottom of the hopper.

[0014] Preferably, the discharge troughs are an upper discharge trough and a lower discharge trough, respectively. The lower discharge trough is used to output the lead paste located at the lower part of the grid and is located in front of the inclined position of the grid, and the upper discharge trough is used to output the lead paste located at the upper part of the grid and is located behind the inclined position of the grid. The lower discharge trough is connected to the hopper through pipes on both sides of the hopper, and is provided with an auger for moving the lead paste and an output roller arranged at the discharge port of the discharge trough.

[0015] Preferably, the lower edge of the discharge port of the upper discharge chute and the upper edge of the discharge port of the lower discharge chute are both configured to be serrated.

[0016] Preferably, the shaping component includes a coating belt arranged below the moving track of the hopper and the grid, multiple groups of camshafts arranged below the coating belt, and a pressure shaft arranged on one side of the discharge port of the upper discharge trough. The camshaft, coating belt and pressure shaft rotate synchronously with the movement of the grid, and the surfaces of the coating belt and the pressure shaft are provided with protrusions.

[0017] Preferably, the shaping component also includes a panel arranged on both sides of the coating belt and slidably connected to the bracket, a motor fixedly connected to the bracket and arranged on the outside of the panel, a cam is arranged at the end of the motor and the cam is attached to the panel, and springs are arranged on both sides of the panel.

[0018] Preferably, the laminating mechanism comprises a first conveyor belt arranged horizontally, a plurality of needles arranged evenly on the first conveyor belt, and a trapezoidal block arranged in the middle of the first conveyor belt, the needles are vertically slidably connected to the first conveyor belt, and a spring is arranged between the end of the needle and the conveyor belt;

[0019] As further preferred, the laminating mechanism further comprises a second conveyor belt arranged below or above the first conveyor belt, and a circular blade is arranged on the surface of the second conveyor belt and the position thereof matches the arrangement position of the needles.

[0020] For the laminating mechanism arranged in the front and used for perforating the lower coated paper, the second conveyor belt is located below the first conveyor belt and the short side of the trapezoidal block is facing downward; for the laminating mechanism arranged in the rear and used for perforating the upper coated paper, the second conveyor belt is located above the first conveyor belt and the short side of the trapezoidal block is facing upward.

[0021] A high specific energy lead-acid battery comprises a shell and a grid group arranged inside the shell, wherein the grids of the grid group are prepared based on a fully automatic continuous coating production line for the grids, the battery has a 2HR capacity of 115%C2, a weight specific energy of 48-50Wh / Kg, a maximum discharge current of 4C2, a large current discharge of ≥35min and a cycle life / time of ≥500 times.

[0022] Beneficial effects of the present invention:

[0023] (1) The present invention provides a continuous coating mechanism and utilizes a double-sided coating process and a micro-negative pressure adsorption technology to continuously coat the grid, thereby solving the problems of the grid being easily deformed due to gravity bending during the continuous coating process and the lead paste being easily shaken off after the coating is completed. On the one hand, it is conducive to continuous production and greatly improves production efficiency. On the other hand, it is easy to control the amount of lead paste applied and improve the qualified rate of grid coating.

[0024] (2) In the present invention, by providing a continuous coating mechanism, the coating of the lead paste is divided into two parts, the upper and lower parts, so that the grid moves along a preset track, and the grid is pressed between the upper and lower layers of lead paste to avoid the problems of gaps and holes that may be caused by the coating process of the lead paste;

[0025] (3) In the present invention, the upper and lower lead paste surfaces of the grid after forming are processed by setting a shaping component, and grooves are set on the surface, and the grooves correspond to the perforation positions of the coated paper. The grooves prevent the lead paste from seeping out from the perforation positions during the subsequent pressing process, so that the grids are adhered to each other, thereby improving product quality;

[0026] (4) In the present invention, a laminating mechanism is provided to perforate the coated paper. On the one hand, the paper tearing problem caused by the speed difference between the coated paper and the roller, which may occur when perforating with a roller, is avoided. On the other hand, the burrs around the perforations are avoided, so that the specifications of each perforation are consistent, which is beneficial to improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of a fully automatic continuous coating production line for a grid.

[0029] Figure 2 It is a cross-sectional schematic diagram of a fully automatic continuous coating production line for a grid.

[0030] Figure 3 It is a structural diagram of the conveying mechanism.

[0031] Figure 4 Schematic diagram of the moving trajectory of the grid.

[0032] Figure 5 A schematic diagram of the structure of the output component.

[0033] Figure 6 It is a schematic diagram of the structure of the discharge chute.

[0034] Figure 7 Schematic diagram of the position structure of the grid and the discharge chute.

[0035] Figure 8 Schematic diagram of the shape of the discharge port of the discharge trough.

[0036] Fig. 9 It is a schematic diagram of the structure of the finalized component.

[0037] Fig.10 Schematic diagram of the relevant structure of the first conveyor belt.

[0038] Fig.11 Schematic diagram of the relevant structure of the second conveyor belt.

[0039] Fig.12 Schematic diagram of the structure of a high specific energy lead-acid battery. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0041] Embodiment 1

[0042] like Figure 1 , Figure 2 As shown, a grid continuous coating line for a high specific energy lead-acid battery comprises:

[0043] A conveying mechanism 1, wherein the conveying mechanism 1 is used to convey the grid and the coated paper;

[0044] A continuous coating mechanism 2, which is arranged on the conveying mechanism 1 and is used for outputting the lead paste, and comprises an output component 21 for outputting the lead paste and a shaping component 22 that cooperates with the output component 21 to constrain the shape of the lead paste;

[0045] The laminating mechanism 3 comprises two groups, which are respectively located at two sides of the continuous coating mechanism 2 and are used for laminating coated board paper through a double-sided laminating process.

[0046] In this embodiment, a continuous coating mechanism 2 and a laminating mechanism 3 are provided to achieve coating of lead paste on the upper and lower surfaces of the grid and laminating the coated board paper on the surface of the lead paste, thereby reducing the pores generated in the process of coating the lead paste on the surface of the grid and avoiding overflow of the lead paste caused by the subsequent pressing process.

[0047] In detail, the grid is moved by the conveying mechanism 1, and the moving trajectory of the grid cooperates with the continuous coating mechanism 2 to apply the lead paste. The continuous coating mechanism 2 divides the lead paste into two layers, the upper and lower surfaces of the board are covered respectively, and the surface of the lead paste is treated to prevent the lead paste from overflowing during the process of laminating the coated board paper.

[0048] At the same time, for the subsequent steps of the grid coating process, an electronic slitting process is used to cut the grid. Compared with the original three-point hanging positioning and slitting after gravity suspension, it is more conducive to coordination with the continuous coating production line, thereby solving the problems of too fast coating speed and easy deformation of the grid due to gravity pulling, and greatly improving the production speed.

[0049] It should be noted that the continuous production of the grid is achieved through the continuous coating mechanism 2, and the various moving parts in the device keep moving synchronously to achieve the connection between various steps.

[0050] It is worth mentioning that by dividing the lead paste into two pieces and covering the upper and lower surfaces of the board in turn, the lead paste is laminated to reduce the holes or inadequate fitting that may be caused when the lead paste is coated on the grid surface.

[0051] Further, if Figure 3As shown, the conveying mechanism 1 is a hole-type structure and uses a slight negative pressure to absorb the grid and output it stably backward. It includes two groups of stabilizing rollers 11 arranged in front of the continuous coating mechanism 2 and used to keep the grid stable, a group of steering rollers 12 arranged behind the stabilizing rollers 11 and used to tilt the grid downward, and a group of pressing rollers 13 arranged behind the steering rollers 12 and used to press the grid, lead paste and coated paper.

[0052] In this embodiment, the estimation of the movement of the grid is determined by setting a plurality of groups of rollers, and the preset movement trajectory is realized by the grid, so as to facilitate the coating of the lead paste in cooperation with the continuous coating mechanism 2.

[0053] In detail, the grid keeps the moving trajectory stable through the middle of two sets of stabilizing rollers 11 to coat the lower layer of the tilting rod, and then continues to move horizontally after tilting downward through the steering roller 12 to coat the upper layer of lead paste. The steering roller 12 makes the horizontal position of the grid go from high to low to match the setting of the continuous coating mechanism 2, and then the pressing roller 13 is used to press the grid that meets the requirements of the coated board paper to complete the continuous coating and carry out subsequent slitting and drying.

[0054] Among them, the stabilizing roller 11, the steering roller 12 and the pressure roller 13 all use micro-negative pressure adsorption technology to transport the grid, that is, the stabilizing roller 11, the steering roller 12 and the pressure roller 13 are all hollow structures and a large number of micropores are arranged on the circumferential surface. A negative pressure machine is arranged inside each roller, and negative pressure is formed inside the roller by the negative pressure machine. The grid is adsorbed on the surface of the roller by the micropores, so that the grid remains stable during the movement, avoiding up and down swinging caused by gravity, and improving the quality of lead paste coating.

[0055] It should be noted that due to the material of the grid itself, the grid cannot be bent to a large extent. The distance between the steering rollers 12 is used to keep the grid tilted at a reasonable angle, and the grid is pressed downward to fit the surface of the lead paste below.

[0056] It is worth mentioning that the conveying mechanism 1 is used to move the grid along a specific trajectory. At the same time, there should be multiple sets of rollers before and after the coating production line to drive the grid and prevent the grid from bending due to gravity, causing the lead paste to fall, resulting in resource waste and environmental pollution.

[0057] Further, if Figure 4 As shown, the conveying mechanism 1 enables the movement of the grid to achieve a "horizontal-inclined downward-horizontal" trajectory, and the two sets of laminating mechanisms 3 are respectively located in the "horizontal" position at the front and rear ends, and the middle of the continuous coating mechanism 2 is opposite to the "inclined downward" position of the grid.

[0058] In this embodiment, the grid is moved to achieve a trajectory of "horizontal-inclined downward-horizontal", and the continuous coating mechanism 2 is used to successively coat the lead paste on the lower and upper sides of the board to avoid affecting the movement of the lead paste.

[0059] In detail, when the grid is at the top, there is space below the grid, and the lead paste is output by the continuous coating mechanism 2. After the grid moves downward, the grid is pressed down on the lower layer of lead paste, and space is left above the grid for coating the upper layer of lead paste.

[0060] Further, if Figure 5 As shown, the output component 21 includes a hopper 211 for stirring lead paste, a plurality of stirring shafts 212 arranged inside the hopper 211 , an extrusion roller arranged at the bottom of the hopper 211 , and two groups of discharge troughs 213 arranged at the bottom of the hopper 211 .

[0061] In this embodiment, by providing a hopper 211 and two groups of discharge troughs 213, discharge of the upper and lower layers of lead paste is achieved respectively, so that the lead paste can be squeezed out to the upper and lower sides of the class respectively.

[0062] In detail, the lead paste is fully stirred in the hopper 211, output to two sets of discharge troughs 213 through the extrusion rollers, and released to the upper and lower surfaces of the grid through the discharge troughs 213.

[0063] Further, if Figure 6 , Figure 7 As shown, the discharge trough 213 is respectively an upper discharge trough 214 and a lower discharge trough 215. The lower discharge trough 215 is used to output the lead paste located at the lower part of the grid and is located in front of the inclined position of the grid. The upper discharge trough 214 is used to output the lead paste located at the upper part of the grid and is located behind the inclined position of the grid. The lower discharge trough 215 is connected to the hopper 211 through pipes on both sides of the hopper 211, and is internally provided with an auger 216 for moving the lead paste and an output roller 217 arranged at the discharge port position of the discharge trough 213.

[0064] In this embodiment, an upper discharge trough 214 and a lower discharge trough 215 are provided to achieve uniform outflow of the lead paste to form a lower layer of lead paste.

[0065] In detail, the lead paste flows into the lower discharge chute 215 from the pipes on both sides of the hopper 211, and is quickly transported to the lower discharge chute 215 by the auger 216, and is squeezed out through the discharge port of the lower discharge chute 215 to form a layer of lead paste board. At this time, the grid moves downward, and the grid is pressed on the lower layer of lead paste, and the upper layer of lead paste continues to be discharged to form a complete grid.

[0066] Since pure lead plates are relatively soft, conventional coating machines have large deformation and high scrap rates. By using a double-sided coating machine consisting of an upper discharge chute 214 and a lower discharge chute 215, the lead paste weight is ±1g and reaches 100%, which is about 10%-20% higher than the qualified rate of conventional coating machines.

[0067] It should be noted that, since the grids are formed into two grids arranged side by side as a group, in order to avoid interference, the lead paste is input into the discharge trough 213 through pipes on both sides.

[0068] It is worth mentioning that the auger 216 is used to enable the lead paste to quickly fill the entire cavity of the lower discharge trough 215, thereby avoiding the situation where the amount of lead paste is insufficient, resulting in uneven output of the lead paste board.

[0069] Further, if Figure 8 As shown, the lower edge of the discharge port of the upper discharge chute 214 and the upper edge of the discharge port of the lower discharge chute 215 are both configured to be serrated.

[0070] In this embodiment, by providing a sawtooth structure, the upper surface of the lower layer of lead paste and the lower surface of the upper layer of lead paste are both wavy and not smooth.

[0071] In detail, the rough surface allows the upper and lower layers of lead paste to fully contact each other to form a complete whole, thereby avoiding the stratification of the overall lead paste after compaction.

[0072] It should be noted that the shapes of the saw teeth on the upper discharge chute 214 and the lower discharge chute 215 should correspond to each other so that the extruded lead paste can interlock with each other from top to bottom.

[0073] Further, if Fig. 9 As shown, the shaping component 22 includes a coating belt 221 arranged below the hopper 211 and the moving track of the grid, a plurality of camshafts 222 arranged below the coating belt 221, and a pressure shaft 223 arranged on one side of the discharge port of the upper discharge trough 214. The camshaft 222, the coating belt 221 and the pressure shaft 223 rotate synchronously with the movement of the grid, and the surfaces of the coating belt 221 and the pressure shaft 223 are provided with protrusions.

[0074] In this embodiment, the coating belt 221 and the pressure shaft 223 are provided to provide support for the molding of the lower layer of lead paste on the one hand, and to press grooves into regular patterns on the upper and lower surfaces of the final grid lead paste on the other hand.

[0075] In detail, the lower layer of lead paste is released from the lower discharge chute 215 onto the surface of the coating belt 221, which provides support for the molding of the lead paste. The protrusions on the surface of the coating belt 221 form grooves on the lower surface of the lead paste. As the grid and the lower layer of lead paste move, the upper layer of lead paste is adhered to the grid and the lower layer of lead paste, and a groove is pressed out on the upper surface by the pressure shaft 223. At the same time, the pressure of the pressure shaft 223 helps the upper and lower layers of lead paste to merge. While the lower layer of lead paste moves, the camshaft 222 rotates synchronously to vibrate the surface of the coating belt 221 to prevent the lead paste from sticking to the coating belt 221.

[0076] The method of coating the grid with the coating belt 221 to coat the upper and lower layers solves the environmental protection and occupational health problems that a large amount of lead paste is easy to fall into the workshop during the traditional semi-automatic coating process, causing resource waste and environmental pollution. At the same time, it can achieve 40m / min continuous production, which is more than 300% higher than the current scraping process.

[0077] It should be noted that the arrangement of the protrusions on the coated paper belt 221 and the pressure shaft 223 corresponds to the positions of the holes punched on the surface of the coated paper.

[0078] It is worth mentioning that the setting of the pressure shaft 223 not only presses out grooves on the surface of the upper lead paste of the grid, but also applies pressure to the upper and lower lead paste layers to fuse the upper and lower lead paste layers into a whole.

[0079] Further, if Fig. 9 As shown, the shaping component 22 also includes a panel 224 arranged on both sides of the coating belt 221 and slidably connected to the bracket, a motor 225 fixedly connected to the bracket and arranged on the outside of the panel 224, a cam is arranged at the end of the motor 225 and the cam is attached to the panel 224, and springs are arranged on both sides of the panel 224.

[0080] In this embodiment, the enclosure 224 and the motor 225 are provided to constrain the two sides of the lead paste, and the motor 225 is used to vibrate the enclosure 224 to assist in the forming of the lead plate.

[0081] In detail, the motor 225 drives the cam to rotate, causing the enclosure 224 to vibrate. The enclosure 224 is arranged on both sides of the grid. The vibration can maintain an appropriate width when the lead paste is output, and on the other hand, cooperate with the pressure of the pressure shaft 223 to prevent the lead paste from overflowing from both sides under the pressure of the pressure shaft 223.

[0082] It should be noted that the enclosure 224 has a certain length and a smooth surface.

[0083] Further, if Fig.10As shown, the laminating mechanism 3 includes a first conveyor belt 31 arranged horizontally, a plurality of needles 32 evenly arranged on the first conveyor belt 31, and a trapezoidal block 33 arranged in the middle of the first conveyor belt 31. The needles 32 are vertically slidably connected to the first conveyor belt 31, and a spring is arranged between the end of the needle 32 and the first conveyor belt 31;

[0084] In this embodiment, the first conveyor belt 31 and the trapezoidal block 33 are provided to realize the up and down movement of the needle 32, so that the needle 32 can realize vertical up and down sliding to pierce the surface of the coated paper.

[0085] In detail, the first conveyor belt 31 rotates synchronously with the coated paper. When the needle 32 on the first conveyor belt 31 moves above the coated paper, the top of the needle 32 contacts the trapezoidal block 33. Under the action of the trapezoidal block 33, the needle 32 slides downward and pokes a hole in the coated paper.

[0086] It should be noted that a spring may be provided between the end portion and the first conveyor belt 31, or an elastic block having the same effect may be provided, or the mutual repulsion of magnets may be utilized to achieve the return of the needle 32.

[0087] It is worth mentioning that the vertical up and down movement of the needle 32 can prevent the coated paper from being torn due to the mutual movement between the needle 32 and the coated paper.

[0088] Further, if Fig.11 As shown, the laminating mechanism 3 further includes a second conveyor belt 34 disposed below or above the first conveyor belt 31 , and a circular blade 35 is disposed on the surface of the second conveyor belt 34 and the position thereof matches the arrangement position of the needles 32 .

[0089] For the laminating mechanism 3 arranged at the front and used for perforating the lower coated paper, the second conveyor belt 34 is located below the first conveyor belt 31 and the short side of the trapezoidal block 33 is downward; for the laminating mechanism 3 arranged at the rear and used for perforating the upper coated paper, the second conveyor belt 34 is located above the first conveyor belt 31 and the short side of the trapezoidal block 33 is upward.

[0090] In this embodiment, the second conveyor belt 34 and the circular blade 35 are provided to cooperate with the needles 32 on the first conveyor belt 31, and the burrs on the edges of the holes caused by the needles 32 piercing the coated paper are cleaned.

[0091] In detail, the second conveyor belt 34 moves synchronously with the coated paper, and the circular blade 35 corresponds to the position of the needle 32, so that the needle 32 moves down to push the burr down, and the circular blade 35 is used to cut off the burr, so that the hole left by the needle 32 is circular.

[0092] It should be noted that the shape of the circular hole corresponds to the position of the grooves on the upper and lower surfaces of the lead paste.

[0093] It is worth mentioning that by trimming off the burrs of the holes, the shape and size of the holes can be kept consistent, which is beneficial to improving the performance of the finished plates.

[0094] Embodiment 2

[0095] like Fig.12 As shown, a high specific energy lead-acid battery comprises a shell 100 and a grid group 200 arranged inside the shell, wherein the grids of the grid group are prepared based on a grid fully automatic continuous coating production line of Example 1, and the high specific energy lead-acid battery 300 has a 2HR capacity of 115%C2, a weight specific energy of 48-50Wh / Kg, a maximum discharge current of 4C2, a large current discharge of ≥35min and a cycle life / time of ≥500 times.

[0096] When used in grid continuous coating, the present application can evenly coat the grid after the paste extrusion operation, thereby ensuring that the paste can be evenly distributed on the outside of the grid, avoiding agglomeration of the paste, and relatively reducing the waste of resources, thereby improving the effect of subsequent use of the grid.

[0097] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0098] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0099] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical prompts of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A grid continuous coating line for high specific energy lead-acid batteries, characterized in that: include: A conveying mechanism (1), the conveying mechanism (1) is used to convey the grid and the coated paper, and the conveying mechanism (1) is a hole-type structure and absorbs the grid by means of a slight negative pressure to stably output it backwards; A continuous coating mechanism (2), the continuous coating mechanism (2) being arranged on the conveying mechanism (1) and used for outputting the lead paste, the continuous coating mechanism (2) comprising an output component (21) for outputting the lead paste and a shaping component (22) for cooperating with the output component (21) to constrain the shape of the lead paste; A laminating mechanism (3), wherein the laminating mechanism (3) is provided with two groups respectively located on both sides of the continuous coating mechanism (2) and used for laminating coated board paper through a double-sided laminating process; The laminating mechanism (3) comprises a first conveyor belt (31) arranged horizontally, a plurality of groups of needles (32) evenly arranged on the first conveyor belt (31), and a trapezoidal block (33) arranged in the middle of the first conveyor belt (31); the needles (32) are vertically slidably connected to the first conveyor belt (31), and a spring is arranged between the end of the needle (32) and the conveyor belt; The laminating mechanism (3) further comprises a second conveyor belt (34) arranged below or above the first conveyor belt (31); a circular blade (35) is arranged on the surface of the second conveyor belt (34) and the position of the circular blade matches the arrangement position of the needles (32); With respect to the laminating mechanism (3) arranged at the front and used for perforating the lower layer of coated paper, the second conveyor belt (34) is located below the first conveyor belt (31) and the short side of the trapezoidal block (33) is downward, the first conveyor belt (31) and the coated paper rotate synchronously, when the needle (32) on the first conveyor belt (31) moves above the coated paper, the top of the needle (32) contacts the trapezoidal block (33), and under the action of the trapezoidal block (33), the needle (32) slides downward and perforates the coated paper. holes; a laminating mechanism (3) arranged at the rear and used for perforating the upper coated paper; the second conveyor belt (34) is located above the first conveyor belt (31) and the short side of the trapezoidal block (33) is facing upwards; the first conveyor belt (31) and the coated paper rotate synchronously; when the needle (32) on the first conveyor belt (31) moves below the coated paper, the top of the needle (32) contacts the trapezoidal block (33); under the action of the trapezoidal block (33), the needle (32) slides upwards to perforate the coated paper.

2. A grid continuous coating line for a high specific energy lead-acid battery according to claim 1, characterized in that: The conveying mechanism (1) comprises two groups of stabilizing rollers (11) arranged in front of the continuous coating mechanism (2) and used to keep the grid stable, a group of steering rollers (12) arranged behind the stabilizing rollers (11) and used to tilt the grid downward, and a group of pressing rollers (13) arranged behind the steering rollers (12) and used to press the grid, lead paste and coated paper.

3. A grid continuous coating line for a high specific energy lead-acid battery according to claim 2, characterized in that: The conveying mechanism (1) enables the movement of the grid to achieve a trajectory of "horizontal-inclined downward-horizontal" and the two sets of laminating mechanisms (3) are respectively located in the "horizontal" position at the front and rear ends, and the middle of the continuous coating mechanism (2) is directly opposite to the "inclined downward" position of the grid.

4. The grid continuous coating line for a high specific energy lead-acid battery according to claim 1, characterized in that: The output component (21) comprises a hopper (211) for stirring lead paste, a plurality of groups of stirring shafts (212) arranged inside the hopper (211), a material extrusion roller arranged at the bottom of the hopper (211), and two groups of material discharge troughs (213) arranged at the bottom of the hopper (211).

5. The grid continuous coating line for high specific energy lead-acid batteries according to claim 4, characterized in that: The discharge trough (213) comprises an upper discharge trough (214) and a lower discharge trough (215), wherein the lower discharge trough (215) is used to discharge the lead paste located at the bottom of the grid and is located in front of the inclined position of the grid, and the upper discharge trough (214) is used to discharge the lead paste located at the top of the grid and is located behind the inclined position of the grid. The lower discharge trough (215) is connected to the hopper (211) via pipes on both sides of the hopper (211), and is provided with an auger (216) for moving the lead paste, and an output roller (217) provided at the discharge port of the discharge trough (213).

6. A grid continuous coating line for a high specific energy lead-acid battery according to claim 5, characterized in that: The lower edge of the discharge port of the upper discharge chute (214) and the upper edge of the discharge port of the lower discharge chute (215) are both configured to be serrated.

7. The grid continuous coating line for high specific energy lead-acid batteries according to claim 1, characterized in that: The shaping component (22) comprises a coating belt (221) arranged below the hopper (211) and the moving track of the grid, a plurality of camshafts (222) arranged below the coating belt (221), and a pressure shaft (223) arranged on one side of the discharge port of the upper discharge chute (214); the camshaft (222), the coating belt (221) and the pressure shaft (223) rotate synchronously with the movement of the grid, and the surfaces of the coating belt (221) and the pressure shaft (223) are provided with protrusions; The shaping component (22) further comprises a panel (224) arranged on both sides of the coating belt (221) and slidably connected to the bracket, a motor (225) fixedly connected to the bracket and arranged outside the panel (224), a cam arranged at the end of the motor (225) and the cam is attached to the panel (224), and springs are arranged on both sides of the panel (224).

8. A high specific energy lead-acid battery, comprising a housing (100) and a grid assembly (200) arranged inside the housing (100), characterized in that: The grids of the grid group are prepared based on a grid continuous coating line for a high specific energy lead-acid battery as described in any one of claims 1 to 7. The high specific energy lead-acid battery (300) has a 2HR capacity of 115%C2, a weight specific energy of 48-50Wh / Kg, a maximum discharge current of 4C2, a large current discharge of ≥35min, and a cycle life / time of ≥500 times.

Images