CN109411776B

CN109411776B - Assembly method of carbon fiber battery polar plate

Info

Publication number: CN109411776B
Application number: CN201811013396.8A
Authority: CN
Inventors: 何幸华; 黎少伟; 李政文; 何可立; 马俊
Original assignee: Guangzhou Zhuoyue Power New Energy Co Ltd
Current assignee: Guangzhou Zhuoyue Power New Energy Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2023-06-02
Anticipated expiration: 2038-08-31
Also published as: CN109411776A

Abstract

The application of the invention discloses an assembly method of a carbon fiber battery polar plate, which comprises the following steps: step one, a mechanical arm sequentially spreads a cut diaphragm on all pressure frames in a shell; step two, the mechanical arm sequentially tiles the bipolar plates on adjacent pressure frames; step three, stacking a single diaphragm on the bipolar plate of each pressure frame; step four, the mechanical arm moves the bipolar plate to the polar plate cutting mechanism, after the polar plate cutting mechanism cuts the bipolar plate into a positive polar plate and a negative polar plate, the mechanical arm flatly tiles the positive polar plate on a pressure frame close to the positive polar end of the shell, and the mechanical arm flatly tiles the negative polar plate on a pressure frame close to the negative polar end of the shell; step five, the mechanical arm moves to the placement position of the bipolar plate, and the bipolar plate is sequentially paved on other pressure frames between the positive plate and the negative plate; step six, repeating the step one, and laminating a single diaphragm on the bipolar plate of each pressure frame; the method can effectively reduce manual operation and improve production efficiency.

Description

Assembly method of carbon fiber battery polar plate

Technical Field

The invention relates to the field of battery processing, in particular to an assembly method of a carbon fiber battery polar plate.

Background

With the popularization and application of consumer electronic devices, there is an increasing demand for energy storage devices that provide electrical energy. Carbon fiber batteries are one of the main energy storage devices at present. A carbon fiber battery generally includes a plurality of battery cells, and one battery cell includes a plurality of cross-stacked plates and separators.

During actual processing, firstly, the carbon fiber battery polar plate and the diaphragm are cut respectively, and then the cut polar plate and diaphragm are manually laminated and assembled. In the whole process, the manual operation is more, the cutting quality and the assembly quality of the polar plates and the diaphragms are seriously dependent on the operation proficiency of workers, so that the individual difference of processed products is large, the defective rate is higher, the processing efficiency is low, and the method is not suitable for large-scale popularization and production.

Disclosure of Invention

The invention aims to provide an assembling method of a carbon fiber battery polar plate, which can effectively reduce manual operation.

The assembling method of the carbon fiber battery polar plate comprises the steps of placing a bipolar plate, a diaphragm and a shell on the same battery production equipment; the battery production equipment comprises a diaphragm cutting mechanism, a polar plate cutting mechanism, a mechanical arm and an assembly frame; placing the housing in the mounting rack; the assembly method comprises the following steps:

step one, a mechanical arm moves to a diaphragm cutting mechanism, and single diaphragms formed by cutting are sequentially paved on all pressure frames in a shell;

step two, the mechanical arm moves to the placement position of the bipolar plate, and the bipolar plate is paved on the adjacent pressure frames in sequence according to the direction from one end to the other end of the shell;

step three, repeating the step one, and laminating a single diaphragm on the bipolar plate of each pressure frame;

step four, the mechanical arm moves the bipolar plate to the polar plate cutting mechanism, after the polar plate cutting mechanism cuts the bipolar plate into a positive polar plate and a negative polar plate, the mechanical arm flatly tiles the positive polar plate on a pressure frame close to the positive polar end of the shell, and the mechanical arm flatly tiles the negative polar plate on a pressure frame close to the negative polar end of the shell;

step five, the mechanical arm moves to the placement position of the bipolar plate, and the bipolar plate is sequentially paved on other pressure frames between the positive plate and the negative plate;

step six, repeating the step one, and laminating a single diaphragm on the bipolar plate of each pressure frame;

and step seven, repeating the step two to the step six.

The working principle and the advantages of the invention are as follows:

according to the assembly method of the carbon fiber battery polar plate, the single diaphragm cut by the diaphragm cutting mechanism is sequentially paved on each pressure frame through the mechanical arm, and when the positive plate and the negative plate are paved, the bipolar plate is directly cut into the positive plate and the negative plate by the polar plate cutting mechanism, so that the time for preparing the single polar plate in advance can be saved. Meanwhile, the polar plate and the diaphragm are moved and assembled through the mechanical arm, so that manual operation can be effectively reduced, and the machining efficiency is improved.

In addition, whole assembly is carried out by utilizing battery production equipment, diaphragm cutting is completed through a diaphragm cutting mechanism, cutting of positive plates and negative plates is completed through a plate cutting mechanism, a cut single diaphragm and a double-plate, a positive plate or a negative plate are crossly stacked through a conveying mechanism, all preparation and assembly processes before assembly can be completed through the battery production equipment, no additional operation is required for workers, the cutting and assembly work of the whole carbon fiber battery plate can be completed by directly utilizing the battery production equipment, manual operation is greatly reduced, various parameters of a product produced through the battery production equipment are more unified, the product consistency is higher, human errors are effectively reduced, the processing efficiency is improved, and meanwhile, the product qualification rate is improved.

Further, the number of pressure frames placed within the housing is an even number.

The pressure frame is used as a carrier for constructing a minimum energy storage and charge-discharge structure in the battery, and not only plays a role in constructing a battery unit, but also plays a role in loading polar plates and diaphragms. An even number of pressure frames are placed in the housing, and there will be an even number of cells in the battery produced, which can increase the energy storage and charge-discharge capacity of the battery compared to a single cell.

Further, the mechanical arm comprises a mechanical joint and a grabbing disc connected with the mechanical joint, two groups of suckers are arranged on the bottom surface of the grabbing disc, and a single diaphragm, a bipolar plate, a positive plate or a negative plate is taken and placed through the grabbing disc.

Through sucking disc absorption monolithic diaphragm, bipolar plate, positive plate or negative plate, can avoid the fish tail and buckling in getting the putting in-process as far as possible, make the tiling range upon range of each material in the pressure frame, reduce range upon range of height as far as possible, make diaphragm and polar plate in the single pressure frame can be as many layers as far as possible, increase the charge-discharge capacity of a battery cell.

Further, the grabbing disc comprises a disc body used for being connected with the sucker, a cavity communicated with the sucker is formed in the disc body, and an electromagnetic valve used for plugging the sucker is arranged between the sucker and the disc body; when the sucker is used for adsorbing the single diaphragm, the positive plate, the negative plate or the bipolar plate, the electromagnetic valve is closed, and the electromagnetic valve separates the sucker from the cavity; when the sucker is put down the single diaphragm, the positive plate, the negative plate or the bipolar plate, the electromagnetic valve is opened, and the sucker is communicated with the cavity.

When the electromagnetic valve is closed, the whole sucker and the electromagnetic valve form a sealing structure, and a precondition is provided for extruding air, forming negative pressure and generating adsorption force on the surface of the sucker at the back. When the electromagnetic valve is opened, the sucker is communicated with the cavity, so that the negative pressure cannot be formed on the surface of the sucker, the adsorption force is lost, and the adsorbed material is released.

Further, when the grabbing disc is used for adsorbing the single-piece diaphragm, the positive plate, the negative plate or the bipolar plate, the mechanical joint downwards extrudes the grabbing disc to extrude air between the sucker disc surface and the adsorbed single-piece diaphragm, the positive plate, the negative plate or the bipolar plate.

When the sucking disc is in adsorption, the mechanical joint directly drives the grabbing disc, air between the disc surfaces of the sucking disc is extruded out through physical extrusion, negative pressure is generated, adsorption force is formed, and the mechanical joint is a structure for driving the grabbing disc to move, so that the sucking disc can be multipurpose.

Further, each sucking disc is communicated with an air suction pipe, the air suction pipe is communicated with an air pump for exhausting air, and when the sucking disc is adsorbed, the air suction pipe continuously pumps away the air on the surface of the sucking disc through the air pump.

Even if a certain gap exists on the sucker disc surface, the sucker disc surface can continuously suck air through the air pump and generate continuous adsorption force.

Further, the mechanical arm is arranged among the diaphragm cutting mechanism, the polar plate cutting mechanism and the assembly frame, and when the mechanical arm moves, the mechanical joint moves back and forth inside and outside.

The inner part refers to a direction close to the installation position of the mechanical arm, the outer part refers to a place far away from the installation position of the mechanical arm, and the mechanical arm is installed between the material preparation mechanism and the assembly position, so that the mechanical arm can conveniently complete movement and assembly of materials in the minimum movement range.

Drawings

Fig. 1 is a flowchart of embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of a battery module assembled in accordance with embodiment 1 of the present invention.

Fig. 3 is a plan view of the battery production apparatus employed in embodiment 1 of the present invention, in which the respective mechanisms constituting the battery production apparatus are labeled.

Fig. 4 is a plan view of the battery production apparatus employed in embodiment 1 of the present invention, in which specific structures within respective mechanisms constituting the battery production apparatus are labeled.

Fig. 5 is a schematic view showing the structure of a grab disk in a battery production apparatus employed in embodiment 1 of the present invention.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: diaphragm cutting mechanism 1, electrode plate cutting mechanism 2, robot arm 3, guide rail 4, mounting frame 5, positioning mechanism 6, pressing mechanism 7, table 8, tray 9, housing 10, bipolar plate 11, positive plate 111, diaphragm 112, negative plate 113, pressure frame 114, mounting frame 13, positioning telescoping structure 14, stroke projection 15, positioning hole 16, catch tray 17, base 170, mechanical joint 171, tray 172, solenoid valve 173, suction cup 174, base 100, motor 101, driving roller 102, driven roller 103, guide roller 104, lateral telescoping structure 105, cutting wheel 106, placement table 107, slide bar 108, slide sleeve 109, cutting groove 110, mechanical joint 171, and mechanical joint,

The method for assembling the carbon fiber battery plate in the embodiment prepares materials to be assembled before assembling, and specifically comprises the following steps:

first, the bipolar plate 11, the AGM separator, the housing 10 for forming the battery and the pressure frame 114 for forming the battery module are all placed on the same battery production equipment, so that the raw materials described above have a common operation plane and can be processed on the same battery production equipment.

The bipolar plate 11 refers to a grid structure having positive and negative conductive effects, which is divided into two parts along a central line, each part forming an electrical characteristic of an output terminal and an input terminal due to a difference in coated conductive substances, and the bipolar plate 11 may be constructed using a conventional art. The grid can make the polar plate fully contact with the filling liquid in the battery, and the stacking thickness can be reduced while the conductivity is increased. When the bipolar plate 11 is selected, the thickness of the bipolar plate 11 is selected to be 1-2 mm, preferably 1 mm, so that the stacking of the multi-layer polar plates can be performed, more polar plates can be stacked under the same height in each pressure frame 114, the charge and discharge performance of each battery unit is improved, and the charge and discharge performance of the battery module is further improved. AGM separator refers to an existing fiberglass separator 112, using prior art techniques.

The outer case 10 is positioned, an even number of pressure frames 114 are placed in the outer case 10, the number of the pressure frames 114 is at least 2, wherein the pressure frames 114 at two ends of the outer case 10 are respectively connected with parts of the outer case 10 serving as the positive electrode and the negative electrode of the battery to form a battery module and even the positive electrode and the negative electrode of the battery. The top end openings of the pressure frames 114 allow all the plates including the single plate and the bipolar plate 11 and the separator 112 to be put into the pressure frames 114 from above, and the openings at both opposite sides of the pressure frames 114, that is, the contact surfaces of one pressure frame 114 and the adjacent two pressure frames 114, are also opened, so that the adjacent pressure frames 114 can be connected to each other through the bipolar plate 11, so that one battery cell can be formed by the stacked plates and separators 112 placed in each pressure frame 114, and the respective battery cells in one casing 10 can be connected to each other to form a unified battery module. While at least 2 pressure frames 114 are provided in the case 10, at least 2 battery cells can be formed, and a battery module formed of the at least 2 battery cells has a greater charge-discharge capacity than a battery module formed of a single battery cell.

Then, the diaphragm 112 is cut into individual diaphragms 112 by the diaphragm cutting mechanism 1. The AGM film is cut to a set length and a set width such that the AGM film is cut from the film spool into a sheet of film 112 of a desired size. Because the diaphragms 112 will have different width specifications at the time of shipment, the width of the diaphragms 112 will generally be sufficient without shearing the width dimensions of the diaphragms 112 themselves, whereas the diaphragms 112 that do not meet the set width requirements need to be subjected to width shearing. Specifically, the set length of the diaphragm 112 is in the range of 22-26 cm, preferably 24.4 cm, and the set width of the diaphragm 112 is 14-18 cm, preferably 16.7 cm, so that the diaphragm 112 cut as desired can be better placed into each pressure frame 114 and matched to the size of the pressure frame 114.

Finally, the bipolar plate 11 is cut into two unipolar plates, a positive plate 111 and a negative plate 113, by the plate cutting mechanism 2.

As shown in fig. 1, the method of the present embodiment is used to assemble the carbon fiber battery plate while the above steps are performed, and specifically includes the following steps:

step one, the mechanical arm 3 moves the grabbing disc 17 to the diaphragm cutting mechanism 1 through the mechanical joint 171; the electromagnetic valve 173 in the grabbing disc 17 blocks the sucker 174 from communicating with the disc body 172, and the sucker 174 is in a gas-tight state at the moment; the mechanical arm 3 drives the grabbing disc 17 to move downwards, the sucker 174 on the grabbing disc 17 approaches to the cut single-sheet diaphragm 112 on the diaphragm cutting mechanism 1, the sucker 174 approaches to and extrudes the single-sheet diaphragm 112 from top to bottom, and air between the disc surface of the sucker 174 and the single-sheet diaphragm 112 is extruded in the extrusion process, and the sucker 174 adsorbs the single-sheet diaphragm 112;

step two, the mechanical arm 3 moves the grabbing disc 17 to the upper side of the shell 10 through the mechanical joint 171, the electromagnetic valve 173 is opened to enable the disc body 172 of the turntable to be communicated with the sucker 174, air enters between the disc surface of the sucker 174 and the single-piece diaphragm 112, and the single-piece diaphragm 112 falls into the shell 10 to be tiled under the action of self gravity; because the two groups of suction cups 174 are symmetrically arranged on the cup body 172, when the suction cups 174 adsorb the single-piece diaphragm 112, the adsorption positions of the suction cups 174 also balance the forces at the left end and the right end of the single-piece diaphragm 112, so that the single-piece diaphragm 112 cannot incline when falling down, and is flatly paved into the corresponding pressure frame 114 in the shell 10 from top to bottom;

the cut individual AGM separator membranes are tiled into each pressure frame 114 in turn; when the single AGM membrane is moved, the AGM membrane is taken and placed in an adsorption mode, bending of the AGM membrane is avoided, and the situation that the stacking of the polar plate and the membrane 112 is affected due to bending of the AGM membrane is reduced.

Steps one and two are repeated until a single diaphragm 112 is tiled over all pressure frames 114.

Step three, the grabbing disc 17 is moved to a position of the bipolar plate 11 in the tray 9 through the mechanical joint 171, the mechanical joint 171 drives the grabbing disc 17 to move downwards, so that the sucker 174 in the grabbing disc 17 is in contact with the bipolar plate 11 and extrudes air between the disc surface of the sucker 174 and the bipolar plate 11, and the sucker 174 adsorbs the bipolar plate 11;

step four, the mechanical joint 171 moves to drive the grabbing disc 17 to move, the mechanical joint 171 moves the bipolar plate 11 absorbed by the grabbing disc 17 to two adjacent pressure frames 114, and the two pressure frames 114 are a group of adjacent pressure frames 114 which are sequentially connected from one end to the other end of the shell 10, i.e. in the step, all the pressure frames 114 should be tiled with a layer of bipolar plates 11 which are not overlapped; when the bipolar plate 11 is located above a group of adjacent pressure frames 114, the electromagnetic valve 173 is opened, so that the suction disc 174 is communicated with the cavity in the disc body 172, the suction force formed by negative pressure is lost between the disc surface of the suction disc 174 and the bipolar plate 11, and the bipolar plate 11 falls onto the group of adjacent pressure frames 114 under the action of self gravity to be tiled.

Automatically tiling the bipolar plates 11 onto two adjacent monolithic diaphragms 112 in sequence by the robotic arm 3; because the number of the pressure frames 114 is even, if the number of the pressure frames 114 is 2N, all the pressure frames 114 are just covered by N bipolar plates 11, so that the AGM separator in each pressure frame 114 is laminated with the plates; when the bipolar plate 11 is taken and placed, the bipolar plate 11 is also taken and placed in an adsorption mode by the sucker 174, so that damage to the bipolar plate 11 is avoided.

Repeating steps three and four until bipolar plates 11 are tiled on all pressure frames 114;

step five, repeating the step one and the step two, and sequentially stacking single diaphragms 112 on the pressure frames 114 of the already stacked bipolar plates 11, so that the plates of each pressure frame 114 and the diaphragms 112 are stacked in a crossed manner, and in short, a layer of diaphragms and a layer of plates are stacked in a staggered manner.

Step six, the mechanical joint 171 moves the bipolar plate 11 absorbed by the grabbing disc 17 into the plate cutting mechanism 2, after the plate cutting mechanism 2 cuts the bipolar plate 11 into the positive plate 111 and the negative plate 113, the mechanical joint 171 drives the grabbing disc 17 to be close to the positive plate 111 and the negative plate 113 downwards, so that two groups of sucking discs 174 arranged on the disc body 172 of the grabbing disc 17 are respectively aligned with the positive plate 111 and the negative plate 113 to press downwards, and air between the disc faces of the sucking discs 174 and the positive plate 111 and the negative plate 113 is extruded, so that the two groups of sucking discs 174 absorb the positive plate 111 and the negative plate 113 respectively.

Step seven, the mechanical joint 171 sequentially moves the grab disk 17 onto the pressure frames 114 at the two ends of the casing 10, when the grab disk 17 moves to the pressure frame 114 close to the positive end of the casing 10, the electromagnetic valve 173 on the sucker 174 for adsorbing the positive plate 111 on the grab disk 17 is opened, and the positive plate 111 is tiled onto the pressure frame 114 at the positive end; when the catch tray 17 moves to the pressure frame 114 at the negative end of the case 10, the solenoid valve 173 on the suction cup 174 of the catch tray 17 sucking the negative plate 113 is opened, and the negative plate 113 is spread to the pressure frame 114 at the negative end.

Step eight, repeating the step three and the step four, the mechanical joint 171 sequentially lays the bipolar plate 11 adsorbed by the grab disk 17 on the pressure frame 114 except for both ends of the housing 10.

The positive plate 111 and the negative plate 113 are laid flat on the single-piece diaphragm 112 of the pressure frame 114 at the two ends of the casing 10; meanwhile, the bipolar plates 11 are sequentially laid in the pressure frames 114 between the positive electrode plate 111 and the negative electrode plate 113, namely, the bipolar plates 11 are laid on the other pressure frames 114 between the two pressure frames 114 at the positive end and the negative end of the shell 10, so that the layer of each pressure frame 114 is laid with the polar plates, and the cross lamination of the polar plates and the diaphragm 112 is formed again, thereby effectively avoiding the situation that the diaphragm 112 and the diaphragm 112 are adjacently laminated; the positive plate 111 and the negative plate 113 are also taken and put in a manner of being adsorbed by the sucking disc 174, so that the damage to the positive plate 111 and the negative plate 113 is avoided.

Step nine, repeating the steps one to eight until the diaphragms 112 with set layers and the polar plates with set layers are stacked in each pressure frame 114; the electrode plate and separator 112 are repeatedly stacked a plurality of times, the electrode plate and separator 112 are alternately stacked, the positive electrode plate 111 or the negative electrode plate 113 are alternately stacked with the bipolar plate 11, and the positive electrode end and the negative electrode end of the bipolar plate 11 are also alternately stacked.

As shown in fig. 2, it is the battery module assembled by the present method that, in the present embodiment, the separator 112 has 4 layers, and the number of electrode plates has 4 layers, where the electrode plates refer to both the bipolar plate 11 and the unipolar plate, and the unipolar plate includes the positive electrode plate 111 and the negative electrode plate 113. For the pressure frame 114 connected to the positive electrode end of the case 10, the cross lamination of the bipolar plate 11 and the positive electrode plate 111 and the separator 112, for the pressure frame 114 connected to the negative electrode end of the case 10, the cross lamination of the bipolar plate 11 and the negative electrode plate 113 and the separator 112, and for the other pressure frame 114 between these two pressure frames 114, the cross lamination of the positive electrode end and the negative electrode end of the bipolar plate 11 and the separator 112. Specifically, when the bipolar plates 11 are laid, the positive and negative ends of adjacent bipolar plates 11 are adjacent, i.e., each bipolar plate 11 has the same arrangement sequence of the positive and negative ends when moved.

After the above steps, it is necessary to press the respective battery cells by the pressing mechanism 7, and finally the battery module is formed. Specifically, all of the plates and the separators 112 stacked in the pressure frames 114 are pressed, and the plates and the separators 112 in all of the pressure frames 114 are pressed together to form a battery module. The stacked plates and separator 112 in each pressure frame 114 together form one battery module, and all the battery modules connected to each other by the bipolar plates 11 together form a battery module. Two pressure frames 114 at both ends of the case 10 are connected to the positive and negative ends of the case 10, respectively, all positive electrode plates 111 in the pressure frames 114 at the positive end of the case 10 together form the positive electrode end of the battery module, and all negative electrode plates 113 in the pressure frames 114 at the negative end of the case 10 together form the negative electrode end of the battery module.

As shown in fig. 3 and 4, the cutting assembly of the carbon fiber battery plate in the present embodiment employs an automatically operated battery production apparatus for battery module production. The battery production apparatus has a structure in which the direction a indicates the front and the direction B indicates the rear. The carbon fiber battery production equipment comprises a diaphragm cutting mechanism 1, a polar plate cutting mechanism 2, a mechanical arm 3, an assembly frame 5, a guide rail 4 and an extrusion mechanism 7 which are arranged on the same workbench 8 and have the same direction operation space. Wherein, the assembly frame 5 slides from left to right along the slide rail, and a positioning mechanism 6 for positioning the assembly frame 5 is arranged at the left end of the slide rail.

The diaphragm cutting mechanism 1, the polar plate cutting mechanism 2 and the mechanical arm 3 are all arranged on a workbench 8 in front of the guide rail 4, and the diaphragm cutting mechanism 1, the polar plate cutting mechanism 2, the guide rail 4 and the assembly frame 5 on the guide rail 4 are provided with a space for the mechanical arm 3 to take and put, so that the mechanical arm 3 can move the single diaphragm 112 obtained by cutting by the diaphragm cutting mechanism 1 and the monopole plate obtained by cutting by the polar plate cutting mechanism 2 to the assembly frame 5; when the assembly frame 5 moves to the lower part of the extrusion mechanism 7 along the guide rail 4, the extrusion mechanism 7 can extrude the polar plates and the diaphragms 112 stacked on the assembly frame 5 from top to bottom to form a battery module, and the structure provides preconditions for the integrated and intelligent production of the carbon fiber battery module.

In this embodiment, the robot arm 3 is located between the diaphragm cutting mechanism 1 and the plate cutting mechanism 2. The diaphragm cutting mechanism 1, the polar plate cutting mechanism 2 and the mechanical arm 3 are reasonably distributed, the running stroke of the mechanical arm 3 is optimized, the action of the mechanical arm 3 is reduced, the path is shortened, and therefore the processing efficiency is improved.

The assembly frame 5 is connected to the guide rail 4 in a sliding manner, the assembly frame 5 is of a containing structure with an open top, and the bottom end of the assembly frame 5 is matched with the concave-convex structure on the guide rail 4. The top opening of the assembly frame 5 is clamped with a tray 9. The tray 9 is provided with 7 first mounting positions for placing the bipolar plate 11 and 1 second mounting position for placing the battery case 10, in order to make the best use of space, the 7 first mounting positions are arranged in an L-shaped structure, namely, as can be directly seen from fig. 4, the whole chuck is divided into a front end and a rear end, 6 first mounting holes which are transversely arranged are formed in the rear end of the chuck, 1 first mounting hole is formed in the front end of the chuck, and a first mounting frame at the front end of the chuck is exactly perpendicular to the other 6 mounting frames to form an L shape. The second installation position is located at the front position of the whole tray 9, so that the shell 10 placed on the second installation position is closer to the diaphragm cutting mechanism 1, the mechanical arm 3 and the polar plate cutting mechanism 2, and the mechanical arm 3 is convenient for placing the single diaphragm 112 and the cut positive polar plate 111 or negative polar plate 113 into the shell 10. Meanwhile, the second installation position is close to the extrusion mechanism 7, so that when the whole assembly frame 5 moves below the extrusion mechanism 7, the shell 10 can be placed below the extrusion mechanism 7 as soon as possible to extrude the polar plates and the diaphragms 112.

An even number of pressure frames 114 are placed in the housing 10, in this embodiment 4 pressure frames 114 are placed. The 4 pressure frames 114 are connected in sequence, and the left side and the right side of each pressure frame 114 penetrate through, so that the battery modules formed by two adjacent pressure frames 114 can be communicated through the laid bipolar plates 11 to form a whole; the flat plates on the front and rear sides of the pressure frame 114 abut against the front and rear sides of the housing 10 to form a battery module, and the housing plays a role in limiting the pressure frame therein and the spacer material in the pressure frame.

The bipolar plate 11 may be a current-commonly used grid having a positive end and a negative end, and the positive and

negative plates

111 and 113 may be formed when the middle of the grid is cut.

The left end of the guide rail 4 is provided with the positioning mechanism 6 for positioning and locking the assembly frame 5, and in the cutting and assembling process, the positioning mechanism 6 ensures that the position of the assembly frame 5 is fixed, so that the problem that the mechanical arm 3 cannot accurately grasp and place due to the movement of the assembly frame 5 is prevented, and the assembling accuracy is improved. The positioning mechanism 6 comprises a mounting frame 13 and a positioning telescopic structure 14 which are arranged on the guide rail 4, and a travel projection 15 which is arranged at the left end of the assembly frame 5. The travel projection 15 is a projection projecting leftward. The mounting bracket 13 is installed between two rails of the guide rail 4, and a distance sensor for detecting whether the mounting bracket 5 is close or not is installed on the mounting bracket 13. The sensing end of the distance sensor faces vertically upwards. In this embodiment, the left end of the assembly frame 5 has two travel protrusions 15, and one side of the mounting frame 13 near the assembly frame 5, that is, the right side of the mounting frame 13 is correspondingly provided with two grooves into which the travel protrusions 15 are inserted, wherein a through hole for the positioning telescopic structure 14 to penetrate through the mounting frame 13 is formed in one groove.

The positioning telescopic structure 14 is fixed below the mounting frame 13, the mounting frame 13 is provided with a through hole for the positioning telescopic structure 14 to penetrate through the mounting frame 13 from bottom to top, the positioning telescopic structure 14 in the embodiment can be a cylinder or a hydraulic cylinder, and a piston rod of the cylinder or the hydraulic cylinder can extend out of the through hole from bottom to top. One of the travel projections 15 is provided with a positioning hole 16 matched with the through hole. When the travel protrusion 15 of the assembly frame 5 is inserted into the groove, the distance sensor detects that the assembly frame 5 is close, the positioning telescopic structure 14 connected with the same control circuit with the distance sensor according to the prior art is started, so that the piston rod of the air cylinder or the hydraulic cylinder extends out of the through hole and the positioning hole 16, the assembly frame 5 is locked, the assembly frame 5 is positioned, and the movement of the assembly frame 5 is avoided.

The robot arm 3 includes a base 170 mounted on the table 8, a mechanical joint 171 connected to the base 170, and a gripper 17 provided at an end of the mechanical joint 171. The base 170 and the mechanical joint 171 of the robot arm 3 are both of a conventional structure.

As shown in fig. 5, the grab disk 17 is a double-claw grab disk 17, and includes a hollow disk body 172, two groups of suction cups 174 mounted at the bottom end of the disk body 172, and two groups of electromagnetic valves 173 respectively corresponding to the two groups of suction cups 174. Wherein, two groups of sucking discs are arranged in parallel. The number of the sucking discs of each group of sucking discs is evenly distributed. The electromagnetic valve 173 is installed between the sucker 174 and the tray body 172, and is used for blocking the cavity in the tray body 172 from communicating with the sucker 174, so that negative pressure can be generated in the adsorption space of the sucker 174, and the polar plate or the diaphragm 112 can be adsorbed. The two sets of suction cups 174 of the double claw grip disc 17 respectively suck the positive and negative ends of one bipolar plate 11 or the AGM membrane, and each set of suction cups 174 comprises two suction cups 174, so that the suction is more stable, and the accidental drop is reduced. When the sucker 174 is sucked, the air between the surface of the sucker 174 and the contact surface of the sucked object is extruded and discharged by the pressure of the mechanical arm 3 to form a negative pressure environment, so that the sucker is sucked with the bipolar plate 11 or the AGM diaphragm, and when the sucker is put down, the inside of the sucker 174 is communicated with the cavity of the tray body 172 through the electromagnetic valve 173 above the sucker 174, so that the negative pressure environment on the surface of the sucker 174 disappears, the adsorption capacity is lost, and the bipolar plate 11 or the AGM diaphragm is put down.

The tray 9 on the assembly frame 5 is matched with the double-claw grabbing disc 17 to be used, the area of the tray 9 is small, the running stroke of the mechanical arm 3 is reduced, and the tray is used for assembling small-capacity carbon fiber batteries with few battery modules, so that the assembly speed is improved, and the assembly efficiency is improved.

As shown in fig. 4, the diaphragm cutting mechanism 1 comprises a base 100, a motor 101, a driving roller 102, a driven roller 103, a guide roller 104, a transverse telescopic structure 105, a cutting wheel 106 and a placing table 107, wherein the guide roller 104, the driven roller 103 and the driving roller 102 are rotatably installed on the base 100 in sequence from front to back, the top surfaces of the guide roller 104, the driven roller 103 and the driving roller 102 are on the same horizontal plane, the motor 101 is in transmission connection with the driving roller 102 and is used for driving the driving roller 102 to rotate, and the AGM diaphragm is further transmitted from the front part of the base 100 to the placing table 107 positioned at the rear part of the base 100 through the driving roller 102. The cutting wheel 106 is sleeved on a slide bar 108 above the driving roller 102 through a slide sleeve 109, the space between the slide bar 108 and the driving roller 102 is a space for passing the AGM film, and the slide bar 108 and the driving roller 102 play a guiding role for the AGM film to avoid the AGM film from inclining in the conveying process.

On both sides of the transfer path constructed by the guide roll 104, the driven roll 103 and the driving roll 102, a limiting frame for limiting the AGM film is installed. The limiting frame is of a U-shaped structure. Two sides of the limiting frame are respectively and fixedly arranged on the base 100, a connecting edge connecting the two sides in the limiting frame is positioned between the placing table 107 and the driving roller 102, and the connecting edge is positioned under the sliding rod 108. When the sliding sleeve 109 is moving, the sliding sleeve 109 moves along the sliding rod 108 just synchronously along the connecting edge. The opposite sides of the two sides are provided with grooves for the AGM film to pass through, the grooves are horizontally arranged, the grooves play a role in limiting and supporting the side edges of the AGM film, and when the cutting wheel 106 is used for cutting the AGM film, the AGM film cannot be inclined or torn due to the limiting and supporting of the grooves on the two sides. The connecting edge is provided with a rectangular through hole communicated with the two side edges, and when the two sides of the AGM film are close to the connecting edge along the groove, the AGM film can pass through the rectangular through hole to continue moving. A cutting groove 110 into which the cutting wheel 106 is inserted is formed in the top surface of the rectangular through hole, that is, the surface of the connecting side near the slide bar 108, in the linear direction of the slide bar 108. Through cutting groove 110, can make cutting wheel 106 stretch into the rectangle through-hole, cut the AGM diaphragm of process, cutting groove 110 has played spacing and direction's effect, and cutting groove 110 and two recesses have played the supporting role to whole AGM membrane together, avoid cutting wheel 106 when cutting, the side of AGM membrane appears tearing the condition because the atress is uneven.

The lateral telescoping structure 105 is fixed to the base 100 and the telescoping rod of the lateral telescoping structure 105 is fixedly connected to the sliding sleeve 109 for pushing the sliding sleeve 109 to slide along the sliding rod 108 and cutting the cutting wheel 106 along the cutting slot 110 on the base 100. The lateral expansion structure 105 may be an air cylinder or a hydraulic cylinder. The base 100 is fixedly mounted on the workbench 8 and the placing table 107 is opposite to the guide rail 4, and the placing table 107 is close to the guide rail 4, so that the mechanical arm 3 can conveniently move the cut diaphragm 112 into the housing 10 singly.

The AGM separator roll is first passed through a guide roll 104, then through a driven roll 103 and finally through a drive roll 102 to a placement table 107, the power of the whole transfer being provided by the drive roll 102. When the length of the AGM membrane transferred to the placement table 107 reaches a set length, the transverse telescopic structure 105 pushes the cutting wheel 106, the sliding sleeve 109 slides along the sliding rod 108 and drives the cutting wheel 106 to cut along the cutting groove 110 on the base 100, and further the AGM membrane is cut off.

In this embodiment, first, the mounting frame 5 is fixed on the guide rail 4 by the positioning mechanism 6, then the bipolar plate 11 is placed on the first mounting position of the tray 9, the housing 10 is placed on the second mounting position of the tray 9, and the reel of the AGM membrane wound into the reel is limited to one place, such as the table 8 or the ground, according to the prior art, so that the AGM membrane on the AGM membrane reel can be rotationally pulled out. The extracted AGM membrane passes through the limit frame along the conveying channel constructed by the guide roller 104, the driven roller 103 and the driving roller 102, so that two sides of the AGM membrane move along the grooves on two sides of the limit frame, the AGM membrane passes through the rectangular through holes on the connecting sides of the limit frame and enters the placing table 107, and the cutting wheel 106 in the membrane cutting mechanism 1 can cut the membrane 112 along the cutting groove 110.

Then, the width of the diaphragm 112 can be adjusted by adjusting the length of the connecting edge of the limiting frame, and the length of the single diaphragm 112 can be adjusted by adjusting the interval time of the running of the cutting wheel 106. The operation of the cutting wheel 106 is determined by the operation of the sliding sleeve 109, the operation of the sliding sleeve 109 is determined by the transverse telescopic structure 105 pushing the sliding sleeve 109 to move, the transverse telescopic structure 105 adopts an air cylinder or a hydraulic cylinder, only the interval time of the telescopic movement of the transverse telescopic structure is required to be controlled, the control technology is the prior art, the timing function of the air cylinder or the hydraulic cylinder can be relied on, and the control mode of an external microcontroller can also be used, so that the description is omitted.

Third, the cut single diaphragms 112 are sequentially removed from the placement table 107 by the mechanical arm 3 and placed into each pressure frame 114, and when the single diaphragms 112 are taken and placed, the suction cups 174 on the grabbing disc 17 are used for sucking the single diaphragms 112, so that adverse effects caused by folding and bending the diaphragms 112 are avoided. The driving and controlling technologies of the mechanical arm 3 are all the prior art, so that the automation and the intellectualization can be realized, and the specific operation can be obtained from the product manual of the related products, and the detailed description is omitted.

Fourth, the robot arm 3 sucks the bipolar plates 11 placed on the tray 9 by the gripper 17, then conveys them into the housing 10 placed in the tray 9, and places each bipolar plate 11 in turn into two adjacent pressure frames 114.

Fifth, the robot arm 3 conveys the bipolar plate 11 on the tray 9 to the plate cutting mechanism 2, so that the plate cutting mechanism 2 cuts the bipolar plate 11 into two monopolar plates, one of which is the positive plate 111 and the other of which is the negative plate 113, through a knife formed by a cutting blade pushed by the grid telescopic structure and a knife holder. The grid telescopic structure adopts an air cylinder or a hydraulic cylinder, and the technology for controlling the automatic operation of the grid telescopic structure is the prior art and is not repeated here.

Sixth, the number of stacking layers may be determined by the number of observations, or may be obtained by the number of stacking times of the robot arm 3, or may be obtained by other prior arts, and description thereof will not be expanded. The determination of the stacking layer number adopts the prior art, and the manual operation is replaced in each link in the specific battery module production process even if the stacking layer number is obtained only through manual observation, so that a worker can finish the production of the battery module only by pressing a switch on some existing electrical equipment, thereby replacing manual operation or combining a semi-automatic device with manual operation, reducing the output of manual labor, shortening the assembly and cutting time and improving the overall production and manufacturing efficiency; meanwhile, the whole assembly and cutting process is automatically completed without manual operation, so that the manual error is avoided, the number of defective products is reduced, and the production and manufacturing cost is reduced.

The separator 112 in this embodiment may be a polyethylene separator or a polypropylene separator, in addition to the AGM separator.

Example 2

The present embodiment differs from embodiment 1 in that the gripper 17 in the robot arm 3 is a four-jaw gripper 17 and the four-jaw gripper 17 is provided with four suction cups 174 equipped with solenoid valves 173. The four-claw grabbing disc 17 can absorb two bipolar plates 11 or two AGM diaphragms at the same time and is used for assembling a high-capacity carbon fiber battery, and meanwhile, the assembling speed is greatly improved by assembling the two bipolar plates 11 and the diaphragms 112, the assembling time for assembling the high-capacity carbon fiber battery is shortened, and the assembling efficiency is improved. Correspondingly, the tray 9 is provided with two rows and columns of first mounting locations for the bipolar plates 11 and one second mounting location for the housing 10. The tray 9 is matched with the four-claw grabbing tray 17 to be used, the area of the tray 9 is large, more bipolar plates 11 can be accommodated, and the capacity of the tray 9 is improved. In addition, two rows of bipolar plates 11 placed on the tray 9 are convenient for the mechanical arm 3 to grasp the two bipolar plates 11 at one time, and are used for assembling large-capacity carbon fiber batteries with more battery modules, so that the overall assembly progress is improved, and the assembly efficiency is improved.

Example 3

The difference between this embodiment and embodiment 1 is that a control device, which may be a microcontroller or a central processor, is provided in the battery production apparatus, a first detector for detecting whether a single diaphragm 112 is provided on the placement table 107 of the diaphragm cutting mechanism 1, a second detector for detecting whether the bipolar plate 11 is placed in the knife edge is mounted on the support column between the knife seat and the cutting blade in the plate cutting mechanism 2, a third detector for detecting whether the bipolar plate 11 is moved to a specified position is mounted on the grab disc 17 of the mechanical arm 3, and the first detector, the second detector and the third detector are all electrically connected with the control device, and the control device is also electrically connected with the actuating mechanisms such as the grid telescopic structure, the motor 101, the transverse telescopic structure 105, the extrusion telescopic structure, and the like, respectively, so as to control the actuating mechanisms to operate respectively.

The control device controls the motor 101 to rotate, so that the motor 101 drives the driving roller 102 to convey the diaphragm 112 to the placing table 107 from front to back, and then the cylinder or the hydraulic cylinder of the transverse telescopic structure 105 is started to work after a preset designated time, so that the telescopic rod of the transverse telescopic structure 105 pushes the cutting wheel 106 on the sliding sleeve 109 to work, and the diaphragm 112 is cut to generate a single diaphragm 112. Since the rotational speed of the motor 101 is determinable, the length of the single diaphragm 112 can be determined by only determining the time difference between the motor 101 and the actuation of the lateral telescoping structure 105. After the first detector detects that the single diaphragm 112 is on the placing table 107, the control device controls the mechanical arm 3 to move the single diaphragm 112 into the pressure frame 114 in the housing 10 for tiling.

The robot arm 3 detects whether the target position is reached, whether the diaphragm 112 is sucked or put down during the movement by a third detector provided on the catch tray 17. The first detector may be a weight sensor mounted on the table surface of the placement table 107 or an infrared sensor mounted on the placement table 107. The third detector can be an infrared sensor, a camera and an image processing module connected with the camera, if the third detector adopts the infrared sensor, whether the third detector reaches the designated position is judged by the distance between the third detector and the target object and the moving position of the mechanical arm 3, if the third detector adopts the camera, a plurality of original images in the image processing module are compared by shooting the target position through the camera, when the shooting image and the original images are successfully compared, the target position is indicated, and the images are the prior art and can be replaced by other prior art and are not repeated here.

After the manipulator arm 3 completes the tiling of all the single diaphragms 112, the control device controls the manipulator arm 3 to move the bipolar plate 11 into the plate cutting mechanism 2. When the bipolar plate 11 is placed in the knife edge by the mechanical arm 3, the second detector detects the bipolar plate 11, the control device starts the grid telescopic structure, the telescopic rod of the grid telescopic structure moves upwards to drive the cutting blade to move towards the knife holder, the cutting blade and the knife holder form a knife gate to cut the bipolar plate 11 into a unipolar plate, and then after the second detector detects that the bipolar plate 11 is not placed in the knife edge, the control device controls the mechanical arm 3 to move the unipolar plate falling onto the fixed plate into the pressure frame 114 in the shell 10. The second detector may be an infrared sensor or other photosensitive device that can be used to detect whether an object is placed in the knife edge.

According to the embodiment, the control device and the detectors connected with the control device through signals are arranged, so that all processing rings in the whole battery production equipment can be automatically connected, and compared with embodiment 1, the embodiment has higher automation and intelligent degree in the processing process.

Example 4

The present embodiment differs from embodiment 1 in that an air suction pipe for communicating with the suction cup 174 is connected to the grip plate 17, and an air pump for sucking air is connected to the air suction pipe. When the suction cup 174 adsorbs the bipolar plate 11, the positive electrode plate 111 and the negative electrode plate 113, the air pump is started, and the suction cup 174 communicated with the air suction pipe continuously sucks air between the suction cup 174 and the plate, so that the suction cup 174 generates great adsorption force to adsorb the plate.

The foregoing is merely an embodiment of the present invention, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application day or before the priority date of the present invention, and can know all the prior art in the field, and have the capability of applying the conventional experimental means before the date, so that a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present application, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. The assembling method of the carbon fiber battery polar plate is characterized by comprising the following steps of: placing the bipolar plate, the diaphragm and the housing on the same battery production equipment; the battery production equipment comprises a diaphragm cutting mechanism, a polar plate cutting mechanism, a mechanical arm and an assembly frame; placing the housing in the mounting rack; the assembly method comprises the following steps:

step one, a mechanical arm moves to a diaphragm cutting mechanism, and single diaphragms formed by cutting are sequentially paved on all pressure frames in a shell; the top end of the pressure frame is opened, and two ends of the opposite sides of the pressure frame are also opened, namely the contact surface of one pressure frame and two adjacent pressure frames is also opened; the number of the pressure frames placed in the shell is even;

step seven, repeating the step two to the step six;

in the first to seventh steps, battery module production is performed by using an automatically operated battery production device; the battery production equipment comprises a diaphragm cutting mechanism, a grid cutting mechanism, a mechanical arm, a guide rail and an extrusion mechanism, wherein the diaphragm cutting mechanism, the grid cutting mechanism, the mechanical arm, the guide rail and the extrusion mechanism have the same direction operation space; the diaphragm cutting mechanism is used for cutting the diaphragm and comprises a motor, a driving roller, a driven roller, a guide roller, a transverse telescopic mechanism, a cutting wheel and a placing table; the motor is used for driving the driving roller to rotate; the transverse telescopic mechanism is used for pushing the cutting wheel to cut the diaphragm; extruding all the polar plates and the diaphragms which are laminated in the pressure frame by adopting an extruding mechanism;

the battery production equipment is provided with a control device, a first detector for detecting whether a single diaphragm is arranged on a placing table of the diaphragm cutting mechanism is arranged on the placing table, a second detector for detecting whether a bipolar plate is placed in a knife edge is arranged on a support column between a knife seat and a cutting blade in the grid cutting mechanism, a third detector for detecting whether the bipolar plate is moved to a specified position is arranged on a grabbing disc of a mechanical arm, the first detector, the second detector and the third detector are all electrically connected with the control device, and the control device is also electrically connected with a grid telescopic structure, a motor, a transverse telescopic structure and an extrusion telescopic structure respectively to control the operation of the actuating mechanisms respectively.

2. The method of assembling a carbon fiber battery plate of claim 1, wherein: the mechanical arm comprises a mechanical joint and a grabbing disc connected with the mechanical joint, two groups of suckers are arranged on the bottom surface of the grabbing disc, and a single diaphragm, a bipolar plate, a positive plate or a negative plate is taken and placed through the grabbing disc.

3. The method of assembling a carbon fiber battery plate of claim 2, wherein: the grabbing disc comprises a disc body used for connecting the sucker, a cavity communicated with the sucker is arranged in the disc body, and an electromagnetic valve used for plugging the sucker is arranged between the sucker and the disc body; when the sucker is used for adsorbing the single diaphragm, the positive plate, the negative plate or the bipolar plate, the electromagnetic valve is closed, and the electromagnetic valve separates the sucker from the cavity; when the sucker is put down the single diaphragm, the positive plate, the negative plate or the bipolar plate, the electromagnetic valve is opened, and the sucker is communicated with the cavity.

4. A method of assembling a carbon fiber battery plate as recited in claim 3, wherein: when the grabbing disc is used for adsorbing the single-piece diaphragm, the positive plate, the negative plate or the bipolar plate, the mechanical joint downwards extrudes the grabbing disc to extrude air between the disc surface of the sucker and the adsorbed single-piece diaphragm, the positive plate, the negative plate or the bipolar plate.

5. The method of assembling a carbon fiber battery plate of claim 4, wherein: the polar plate cutting mechanism comprises a cutting blade and a cutter seat which can move relatively, and a cutter edge formed by the cutting blade and the cutter seat is close to the assembly frame; in step six, the transfer mechanism places the bipolar plate into the knife edge and the cutting blade and knife holder cut the bipolar plate into positive and negative plates.

6. The method of assembling a carbon fiber battery plate of claim 5, wherein: each sucking disc is communicated with an air suction pipe, the air suction pipe is communicated with an air pump for exhausting air, and when the sucking disc is in adsorption, the air suction pipe continuously pumps away the air on the surface of the sucking disc through the air pump.

7. The method of assembling a carbon fiber battery plate of claim 1, wherein: the mechanical arm is arranged among the diaphragm cutting mechanism, the polar plate cutting mechanism and the assembly frame, and when the mechanical arm moves, the mechanical joint moves back and forth inside and outside.