A liquid injection device for carbon fiber battery

Abstract

The present invention relates to the technical field of battery production, and in particular to a liquid injection device for a carbon fiber battery, comprising a frame, a conveyor belt is installed on the frame, the conveyor belt can drive the battery to move, a mounting frame is fixedly connected to the frame, both ends of the mounting frame are symmetrically slidably connected with sliders, a roller is rotatably connected between the two symmetrical sliders, the outer sides of the rollers at the two ends of the mounting frame are provided with flat belts for friction transmission with the rollers, and the inner sides of the flat belts are provided with a vacuum liquid injection assembly fixedly installed between the sliders; the vacuum liquid injection assembly can extract the air inside the battery and inject electrolyte into the corresponding battery. The overall structure of the present invention is simple and ingenious, easy to operate and maintain, which is beneficial to reducing cost loss in the working process, and also beneficial to improving the working efficiency of battery batch liquid injection, which helps to reduce the production and maintenance costs in the process of carbon fiber battery liquid injection.

Description

Technical Field

[0001] The invention relates to the technical field of battery production, and in particular to a liquid injection device for a carbon fiber battery. Background Art

[0002] With the rapid economic development, people have an increasing demand for electronic products, and batteries that provide power for electronic products have become a focus. Since the material of the electrode plates in lead-acid batteries contains lead, the pollution problem is becoming more and more serious. Electrode plates made of lead are gradually being eliminated and replaced by carbon fiber composite electrode plates; carbon fiber composite electrode plates meet environmental protection requirements, and the use of carbon fiber batteries has gradually increased in recent years.

[0003] At present, during the production process of carbon fiber batteries, electrolyte needs to be injected. The electrolyte is generally dilute sulfuric acid. Dilute sulfuric acid is a liquid diluted into a specific concentration by adding water to concentrated sulfuric acid. In order to ensure the quality of the battery, improve the efficiency and automation of filling, and reduce the cost of manual processing, a Chinese invention patent with patent number CN109192919B discloses a liquid injection method for carbon fiber batteries. The liquid injection method for carbon fiber batteries includes the following steps: Step 1, placing the carbon fiber battery into a vacuum tank through a feeding mechanism, and setting a liquid storage tank connected to the vacuum tank next to the vacuum tank; Step 2, evacuating the vacuum tank and aligning the liquid injection device with the liquid inlet of the carbon fiber battery; Step 3, opening the liquid injection device to inject the electrolyte solution in the liquid storage tank into the carbon fiber battery to complete the liquid injection operation, firstly conveying the carbon fiber battery to the end of the vacuum tank through a conveying mechanism, and then taking the carbon fiber battery with the liquid injection completed out of the vacuum tank through a discharging mechanism, and the processing is completed.

[0004] Although this scheme provides a method for injecting carbon fiber batteries that can improve the efficiency of electrolyte injection of carbon fiber batteries, the vacuum tank must be evacuated before the carbon fiber battery is placed in the vacuum tank during operation. It consumes a lot of power to evacuate the entire tank body, and since the rotating first turntable 5 and the second turntable 16 both penetrate the side wall of the vacuum tank 1, vacuum leakage is very likely to occur, which will further increase the power of vacuuming, thereby increasing production costs. In addition, the transmission belt needs to be set in a closed vacuum tank, which is not conducive to the maintenance of the conveyor belt, thereby increasing maintenance costs.

[0005] In summary, how to reduce the production and maintenance costs during the liquid injection process of carbon fiber batteries is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0006] In order to solve the deficiencies in the prior art, the present invention provides a liquid injection device for a carbon fiber battery.

[0007] The technical solution of the present invention is:

[0008] The invention provides a liquid injection device for a carbon fiber battery, comprising a frame, a conveyor belt is installed on the frame, the conveyor belt can drive the battery to move, a mounting frame is fixedly connected to the frame, sliders are symmetrically slidably connected to the two ends of the mounting frame, a roller is rotatably connected between the two symmetrical sliders, flat belts are provided on the outer sides of the rollers at the two ends of the mounting frame for friction transmission, a plurality of evenly distributed long strip through grooves are provided on the surface of the flat belt corresponding to the liquid injection port of the battery, blocks fixedly connected to the flat belt are provided between the adjacent long strip through grooves, and a vacuum liquid injection assembly fixedly installed between the sliders is provided on the inner side of the flat belt; the vacuum liquid injection assembly can extract the air inside the battery and inject electrolyte into the corresponding battery.

[0009] Furthermore, the vacuum injection assembly includes a box body, which is fixedly installed between sliders located at the two ends of the mounting frame, and the upper and lower side surfaces of the box body are slidably connected to the flat belt surface, and an injection cylinder is fixedly installed inside the box body, and the internal sealing and sliding connection of the injection cylinder is a piston, and a spiral hole is opened at the center of the piston, and a spiral shaft is matched and installed inside the spiral hole, and one end of the spiral shaft passes through one end of the injection cylinder, and the side wall of the spiral shaft is sealed and slidably connected to the side wall of the end of the injection cylinder, and the outer end of the spiral shaft is transmission-connected to a driving motor; the outer side of the injection cylinder is located at the left end of the piston and is provided with a first mounting seat fixedly and sealedly connected to the inside of the injection cylinder, and the outer side of the injection cylinder is located at the right end of the piston and is provided with a second mounting seat fixedly and sealedly connected to the inside of the injection cylinder, and the outer ends of the first mounting seat and the second mounting seat are both sealed and rotatably connected to a rotating tube, and a through hole is opened on the side wall of the box body corresponding to the rotating tube.

[0010] Furthermore, the first mounting seat and the second mounting seat are internally provided with a first channel connected to the interior of the liquid cylinder, and a torsion spring is provided at the rotating connection of the rotating tube. The torsion spring will automatically swing the rotating tube toward the outer end of the through hole. When the rotating tube swings toward the outer end of the through hole to the outside of the box, the first channel will be connected with the rotating tube, and the corresponding through hole inside the box is provided with a sealing tube fixedly sealed and connected to the outer side surface of the liquid injection cylinder. A position sensor is provided inside the sealing tube corresponding to the rotation direction of the rotating tube. The position sensor is electrically controlled and connected to a controller that controls the drive motor, and the controller can control the corresponding forward and reverse rotation of the drive motor according to the signal of the position sensor.

[0011] Furthermore, the outer side of the injection cylinder is located at the left end of the piston and is provided with a one-way exhaust valve which is fixedly and sealedly connected to the inside of the injection cylinder. The outer side of the injection cylinder is located at the right end of the piston and is provided with a one-way liquid inlet valve which is fixedly and sealedly connected to the inside of the injection cylinder. The outer end of the one-way exhaust valve is connected to an exhaust pipe leading to the outside. The outer end of the one-way liquid inlet valve is sealed and fixedly connected to an inlet pipe, and the inlet pipe is connected to the external electrolyte.

[0012] Furthermore, the inner side surfaces of the corresponding flat belts around the box body are provided with rounded corners; both end surfaces of the piston are provided with bellows fixedly and sealedly connected thereto, and the other end of the bellows is sealed and fixedly connected to the side wall of the inner end of the injection cylinder.

[0013] Furthermore, the upper end surface of the slider is provided with a third telescopic rod fixedly connected thereto, the telescopic end of the third telescopic rod is fixedly connected to the upper end surface of the slider, and the fixed end of the third telescopic rod is fixedly connected to the mounting frame.

[0014] Furthermore, the flat belt is composed of a tensile layer and an elastic layer, the inner side of the flat belt is made of a rough surface using a material with good toughness and tensile strength, and the outer surface of the flat belt is made of a smooth surface using a material with good elasticity and corrosion resistance.

[0015] Furthermore, the conveyor belt is driven by electricity, both ends of the conveyor belt correspond to the external automatic conveying device, and the surface of the conveyor belt is evenly provided with a plurality of push blocks fixedly connected thereto, and the distance between the push blocks corresponds to the length of the battery.

[0016] Furthermore, the push block is fixedly connected to the conveyor belt by screws, a limit block is installed on one side of the push block, a second telescopic rod is fixedly installed inside the limit block, and the telescopic end of the second telescopic rod is fixedly connected to the push block.

[0017] Furthermore, a first telescopic rod is symmetrically fixedly mounted on the inner side surface of the mounting frame, and a guide plate is fixedly connected to the telescopic end of the first telescopic rod. An arc-shaped outward expansion opening is provided at one end of the guide plate away from the mounting frame corresponding to the width direction of the battery.

[0018] The beneficial effects achieved by the present invention are:

[0019] When the present invention is in use, the batteries to be filled can be transported one by one to the upper surface of the conveyor belt between the two push blocks through an external automatic conveying device, and then the conveyor belt can be turned on to automatically transport the batteries to be filled from one end of the conveyor belt to the automatic conveying device at the other end. The design has a simple structure and is easy to operate. It can automatically transport the batteries to be filled, thereby increasing the degree of automation during the working process of the present invention.

[0020] When the present invention is used, when the conveyor belt drives the battery to be filled with liquid to move toward the mounting frame, the battery enters the inner side of the two guide plates along the outer expansion opening to limit the position of the battery, and by adjusting the extension length of the first telescopic rod, it can adapt to batteries of different widths, and by adjusting the extension length of the second telescopic rod, the distance between the push block and the limit block can be adjusted according to the length of the battery, thereby meeting the use of batteries of different lengths, and by adjusting the extension length of the third telescopic rod, the overall height of the adjustment slider can be adjusted accordingly, which not only meets the use of batteries of different heights; this design increases the scope of application of the present invention when used.

[0021] When the present invention is used, when the conveyor belt drives the battery to be injected into the lower side of the moving box body, and the long strip through groove is at the lower side of the through hole, the rotating tube will rotate to the inside of the long strip through groove, and at this time, the controller will control the driving motor to drive the spiral shaft to rotate forward to make the piston move to the right side, and when the piston moves to the right side, the air inside the battery injection port will be extracted through the rotating tube and the first channel inside the first mounting seat, as the conveyor belt, the battery and the flat belt continue to move, the end of the long strip through groove on the flat belt will push the rotating tube to rotate upward, and after the rotating tube rotates upward, the rotating tube will trigger the position sensor, and the position sensor will transmit the signal to the controller, and the controller will control the driving motor to drive the spiral shaft to rotate in the opposite direction to make the piston move to the left side, and at the same time, the first channels inside the first mounting seat and the second mounting seat are both in a closed state, and when the piston moves to the left side, the air inside the injection cylinder at the left end of the piston will be discharged through the one-way exhaust valve and the exhaust pipe, and the external electrolyte will also be sucked into the cavity at the right end of the piston inside the injection cylinder through the liquid inlet pipe and the one-way liquid inlet valve.

[0022] As the conveyor belt continues to move, when the rotating tube rotates to the inside of the long strip groove again, the torsion spring will automatically swing the rotating tube toward the outer end of the through hole again so that the rotating tube will rotate to the inside of the long strip groove. At this time, the controller will control the driving motor again to drive the spiral shaft to rotate forward to move the piston to the right. The movement of the piston to the right will spray the electrolyte inside the filling cylinder through the second mounting seat and the rotating tube rotatably connected to its outer side into the filling port of the battery from which the air inside has been extracted, thereby completing the filling of the battery. This design will automatically extract the air inside the next battery to be filled while completing the filling of one battery, so that the electrolyte can be better injected into the battery during filling.

[0023] To sum up, the overall structure of the present invention is simple and ingenious, easy to operate and maintain, which is beneficial to reducing cost losses during the working process, improving the working efficiency of batch injection of batteries, and helping to reduce the production and maintenance costs during the injection process of carbon fiber batteries. It is very suitable for the injection of carbon fiber batteries in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 yes Figure 1 The enlarged schematic diagram of the structure of Part I;

[0026] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0027] Figure 4 yes Figure 3 The enlarged schematic diagram of the structure of Part II;

[0028] Figure 5 yes Figure 3 Schematic diagram of the enlarged structure of Part III. DETAILED DESCRIPTION

[0029] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0034] like Figure 1 As shown, the present invention provides a liquid injection device for carbon fiber batteries, including a frame 1, on which a conveyor belt 2 is installed, the conveyor belt 2 is driven by electricity, and both ends of the conveyor belt 2 correspond to an external automatic conveying device. This is a prior art, and its structural principle is not described in detail. The surface of the conveyor belt 2 is evenly distributed with a plurality of push blocks 3 fixedly connected thereto, and the distance between the push blocks 3 corresponds to the length of the battery; in the working process, the batteries to be injected can be transported one by one to the upper surface of the conveyor belt 2 between the two push blocks 3 through the external automatic conveying device, and then the conveyor belt 2 can be turned on to automatically transfer the batteries to be injected from one end of the conveyor belt 2 to the automatic conveying device at the other end. The design has a simple structure and is easy to operate. The batteries to be injected can be automatically transferred, which increases the degree of automation of the present invention during the working process.

[0035] like Figure 1 , 2 As shown, the upper surface of the frame 1 is provided with a mounting frame 4 fixedly connected thereto, and the inner side surface of the mounting frame 4 is symmetrically fixedly installed with a first telescopic rod 5, and the telescopic end of the first telescopic rod 5 is provided with a guide plate 6 fixedly connected thereto, and the end of the guide plate 6 away from the mounting frame 4 is provided with an arc-shaped outer expansion opening 7 corresponding to the width direction of the battery. During use, when the conveyor belt 2 drives the battery to be filled with liquid to move toward the mounting frame 4, the battery enters the inner side of the two guide plates 6 along the outer expansion opening 7 to limit the position of the battery, and by adjusting the extended length of the first telescopic rod 5, it can adapt to batteries of different widths. This design increases the scope of application of the present invention when used.

[0036] like Figure 1 , 3 As shown in Figures 4, the push block 3 is fixedly connected to the conveyor belt 2 by screws, and a limit block 8 slidably connected to the push block 3 is provided on one side of the push block 3, and a second telescopic rod 9 is fixedly installed inside the limit block 8, and the telescopic end of the second telescopic rod 9 is fixedly connected to the push block 3; during operation, the distance between the push block 3 and the limit block 8 can be adjusted according to the length of the battery by adjusting the telescopic length of the second telescopic rod 9, thereby being able to meet the use of batteries of different lengths. This design ensures that the present invention can match batteries of different lengths.

[0037] like Figure 1 ,3 As shown, a group of sliders 10 slidably connected to the mounting frame 4 are symmetrically arranged at both ends of the mounting frame 4, a transverse shaft 11 rotatably connected to the mounting frame 4 is arranged between the two symmetrical sliders 10, a rotating roller 12 rotatably connected to the transverse shaft 11 is arranged on the outer side of the transverse shaft 11, and a flat belt 13 is frictionally driven with the rotating rollers 12 at both ends of the mounting frame 4. The flat belt 13 is composed of a tensile layer and an elastic layer. The inner side of the flat belt 13 is made of a material with good toughness and tensile strength to form a rough surface, and the outer surface of the flat belt 13 is made of a material with good elasticity and corrosion resistance to form a smooth surface. The surface of the flat belt 13 is provided with a plurality of The long strip through grooves 14 are evenly distributed, and blocks 15 fixedly connected to the flat belt 13 are provided between the adjacent long strip through grooves 14; during operation, when the conveyor belt 2 drives the battery to be filled with liquid to move toward the mounting frame 4, the end of the battery in the length direction will correspondingly abut against the side of the block 15, and the flat belt 13 is driven to move by the block 15, and the roller 12 and the horizontal axis 11 can cooperate with the flat belt 13 to move smoothly. As the flat belt 13 moves, the long strip through grooves 14 on the surface of the flat belt 13 will be sealed and fitted on the outside of the liquid filling port of the battery. At this time, the liquid can be injected into the inside of the liquid filling port of the battery through the long strip through grooves 14.

[0038] like Figure 1 , 3 As shown, the upper end surface of the slider 10 is provided with a third telescopic rod 33 fixedly connected thereto, the telescopic end of the third telescopic rod 33 is fixedly connected to the upper end surface of the slider 10, and the fixed end of the third telescopic rod 33 is fixedly connected to the mounting bracket 4. During operation, the overall height of the slider 10 can be adjusted accordingly by adjusting the extended length of the third telescopic rod 33, which can not only meet the use of batteries of different heights, but also can be used to adjust the pressure of the long strip through groove 14 on the surface of the flat belt 13 to seal against the outer side surface of the liquid filling port of the battery, thereby ensuring the sealing effect.

[0039] like Figure 35, a box body 16 is fixedly connected between the sliders 10 at the two ends of the mounting frame 4, and the upper and lower side surfaces of the box body 16 are slidably connected to the surface of the flat belt 13. The box body 16 is provided with fillets 17 corresponding to the inner side surfaces of the flat belt 13 around the box body 16. The fillets 17 can ensure that the flat belt 13 can smoothly pass through the upper and lower side surfaces of the box body 16 during work. The inside of the box body 16 is provided with a liquid injection cylinder 18 fixedly connected thereto, and the inside of the liquid injection cylinder 18 is provided with a piston 19 sealed and slidably connected thereto, and the center of the piston 19 is provided with a spiral hole 20, and the inside of the spiral hole 20 is provided with a spiral shaft matching therewith. 21, one end of the spiral shaft 21 passes through one end of the injection cylinder 18, the side wall of the spiral shaft 21 is sealed and slidably connected to the side wall of the end of the injection cylinder 18, the outer end of the spiral shaft 21 is provided with a driving motor 22 connected thereto, both end surfaces of the piston 19 are provided with bellows 23 fixedly sealed therewith, and the other end of the bellows 23 is sealed and fixedly connected to the side wall of the inner end of the injection cylinder 18; the bellows 23 can ensure that the cavity inside the two ends of the piston 19 can have a good sealing effect during operation, thereby ensuring the feasibility of the present invention during use.

[0040] like Figure 5 As shown, the outer side of the injection cylinder 18 is located at the left end of the piston 19 and is provided with a first mounting seat 24 that is fixedly sealed and connected to the inside of the injection cylinder 18. The outer side of the injection cylinder 18 is located at the right end of the piston 19 and is provided with a second mounting seat 25 that is fixedly sealed and connected to the inside of the injection cylinder 18. The outer ends of the first mounting seat 24 and the second mounting seat 25 are both provided with a rotating tube 26 that is sealed and rotatably connected thereto. A through hole 27 is opened on the side wall of the box body 16 corresponding to the rotating tube 26. A torsion spring is provided at the rotating connection of the rotating tube 26. The torsion spring will automatically swing the rotating tube 26 toward the outer end of the through hole 27 when no external force is applied. The first mounting seat 24 and the second mounting seat 25 are both provided with a rotating tube 26 that is sealed and rotatably connected thereto. A first channel 28 connected to the inside of the liquid cylinder 18 is provided inside the second mounting seat 25. When the rotating tube 26 swings toward the outer end of the through hole 27 to the outside of the box body 16, the first channel 28 will be connected with the rotating tube 26. A sealing tube 29 fixedly sealed and connected to the outer side surface of the liquid injection cylinder 18 is provided inside the box body 16 corresponding to the through hole 27. A position sensor 30 is provided inside the sealing tube 29 corresponding to the rotation direction of the rotating tube 26. The position sensor 30 is electrically connected to the controller that controls the drive motor 22. The controller can control the corresponding forward and reverse rotation of the drive motor 22 according to the signal of the position sensor 30.

[0041] like Figure 5As shown, the outer side of the injection cylinder 18 is located at the left end of the piston 19 and is provided with a one-way exhaust valve 31 which is fixedly and sealedly connected to the inside of the injection cylinder 18. The outer side of the injection cylinder 18 is located at the right end of the piston 19 and is provided with a one-way liquid inlet valve 32 which is fixedly and sealedly connected to the inside of the injection cylinder 18. The outer end of the one-way exhaust valve 31 is connected to an exhaust pipe leading to the outside, and the outer end of the one-way liquid inlet valve 32 is provided with a liquid inlet pipe which is sealed and fixedly connected thereto, and the liquid inlet pipe is connected to the external electrolyte.

[0042] In summary, when the present invention is in use, the batteries to be filled can be transported one by one to the upper surface of the conveyor belt 2 between the two push blocks 3 through an external automatic conveying device, and then the conveyor belt 2 can be turned on to automatically transfer the batteries to be filled from one end of the conveyor belt 2 to the automatic conveying device at the other end. The design has a simple structure and is easy to operate. It can automatically transport the batteries to be filled, thereby increasing the degree of automation during the working process of the present invention.

[0043] When the present invention is used, when the conveyor belt 2 drives the battery to be filled with liquid to move toward the mounting frame 4, the battery enters the inner side of the two guide plates 6 along the outer expansion opening 7 to limit the position of the battery, and by adjusting the extension length of the first telescopic rod 5, it can adapt to batteries of different widths, and by adjusting the extension length of the second telescopic rod 9, the distance between the push block 3 and the limit block 8 can be adjusted according to the length of the battery, thereby meeting the use of batteries of different lengths. By adjusting the extension length of the third telescopic rod 33, the overall height of the corresponding adjustment slider 10 can be adjusted, which can not only meet the use of batteries of different heights; this design increases the scope of application of the present invention when used.

[0044] When the present invention is used, when the conveyor belt 2 drives the battery to be injected to the lower side of the moving box body 16, and the long strip groove 14 is at the lower side of the through hole 27, the rotating tube 26 will rotate to the inside of the long strip groove 14. At this time, the controller controls the driving motor 22 to drive the spiral shaft 21 to rotate forward to make the piston 19 move to the right. When the piston 19 moves to the right, the air inside the battery injection port will be extracted through the rotating tube 26 and the first channel 28 inside the first mounting seat 24. As the conveyor belt 2, the battery and the flat belt 13 continue to move, the end of the long strip groove 14 on the flat belt 13 will push the rotating tube 26 to rotate upward. After the rotating tube 26 rotates upward, the rotating tube 26 will trigger the position sensor 30, and the position sensor 30 will transmit a signal to the controller. The controller will control the driving motor 22 to drive the spiral shaft 21 to rotate in the opposite direction to make the piston 19 move to the left. At the same time, the first channels 28 inside the first mounting seat 24 and the second mounting seat 25 are both in a closed state. When the piston 19 moves to the left, The air in the injection cylinder 18 at the left end of the piston 19 is discharged through the one-way exhaust valve 31 and the exhaust pipe, and the external electrolyte is also sucked into the cavity at the right end of the piston 19 in the injection cylinder 18 through the liquid inlet pipe and the one-way liquid inlet valve 32. As the conveyor belt 2 continues to move, when the rotating tube 26 rotates to the inside of the long strip through groove 14 again, the torsion spring will automatically swing the rotating tube 26 toward the outer end of the through hole 27 again so that the rotating tube 26 will rotate to the inside of the long strip through groove 14. At this time, the controller will control again The driving motor 22 drives the screw shaft 21 to rotate forward to move the piston 19 to the right. The movement of the piston 19 to the right will spray the electrolyte inside the filling cylinder 18 through the second mounting seat 25 and the rotating tube 26 rotatably connected to its outer side into the filling port of the battery from which the air inside has been extracted, thereby completing the filling of the battery. This design will automatically extract the air inside the next battery to be filled while completing the filling of one battery, so that the electrolyte can be better injected into the battery during the filling.

[0045] In short, the overall structure of the present invention is simple and ingenious, easy to operate and maintain, which is beneficial to reducing cost losses during the working process, improving the working efficiency of batch injection of batteries, and helping to reduce the production and maintenance costs during the injection process of carbon fiber batteries. It is very suitable for the injection of carbon fiber batteries in the production process.

[0046] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A liquid injection device for a carbon fiber battery, characterized in that: The invention comprises a frame (1), a conveyor belt (2) is mounted on the frame (1), the conveyor belt (2) can drive the battery to move, a mounting frame (4) is fixedly connected to the frame (1), two ends of the mounting frame (4) are symmetrically slidably connected with sliders (10), a roller (12) is rotatably connected between the two symmetrical sliders (10), the outer sides of the rollers (12) at the two ends of the mounting frame (4) are provided with flat belts (13) for friction transmission therewith, the surface of the flat belt (13) is provided with a plurality of evenly distributed long strip through grooves (14) corresponding to the injection port of the battery, a stopper (15) fixedly connected to the flat belt (13) is provided between the adjacent long strip through grooves (14), and a vacuum injection assembly fixedly mounted between the sliders (10) is provided on the inner side of the flat belt (13); the vacuum injection assembly can extract air from the battery and inject electrolyte into the corresponding battery; The vacuum liquid injection assembly comprises a box body (16), the box body (16) is fixedly mounted between sliders (10) located at two ends of a mounting frame (4), the upper and lower side surfaces of the box body (16) are slidably connected to the surface of a flat belt (13), a liquid injection cylinder (18) is fixedly mounted inside the box body (16), a piston (19) is sealingly slidably connected inside the liquid injection cylinder (18), a spiral hole (20) is opened at the center of the piston (19), a spiral shaft (21) is matched and mounted inside the spiral hole (20), one end of the spiral shaft (21) passes through one end of the liquid injection cylinder (18), and the side wall of the spiral shaft (21) is connected to the liquid injection cylinder (18). ) is sealed and slidably connected to the side wall of the end, and the outer end of the spiral shaft (21) is drivingly connected to the driving motor (22); the outer side of the injection cylinder (18) is located at the left end of the piston (19) and is provided with a first mounting seat (24) that is fixedly and sealedly connected to the inside of the injection cylinder (18); the outer side of the injection cylinder (18) is located at the right end of the piston (19) and is provided with a second mounting seat (25) that is fixedly and sealedly connected to the inside of the injection cylinder (18); the outer ends of the first mounting seat (24) and the second mounting seat (25) are both sealed and rotatably connected to a rotating tube (26), and a through hole (27) is opened on the side wall of the box body (16) corresponding to the rotating tube (26); A first passage (28) communicating with the inside of the liquid cylinder (18) is provided inside the first mounting seat (24) and the second mounting seat (25); a torsion spring is provided at the rotation connection of the rotating tube (26); the torsion spring automatically swings the rotating tube (26) toward the outer end of the through hole (27); when the rotating tube (26) swings toward the outer end of the through hole (27) to the outside of the box (16), the first passage (28) is communicated with the rotating tube (26); a sealing tube (29) fixedly sealed and connected to the outer side surface of the liquid injection cylinder (18) is provided inside the box (16) corresponding to the through hole (27); a position sensor (30) is provided inside the sealing tube (29) corresponding to the rotation direction of the rotating tube (26); the position sensor (30) is electrically connected to a controller for controlling the driving motor (22); and the controller can control the corresponding forward and reverse rotation of the driving motor (22) according to a signal from the position sensor (30); A one-way exhaust valve (31) fixedly connected to the inside of the injection cylinder (18) and sealed is provided on the outside of the injection cylinder (18) at the left end of the piston (19), and a one-way liquid inlet valve (32) fixedly connected to the inside of the injection cylinder (18) and sealed is provided on the outside of the injection cylinder (18) at the right end of the piston (19). The outer end of the one-way exhaust valve (31) is connected to an exhaust pipe leading to the outside, and the outer end of the one-way liquid inlet valve (32) is sealed and fixedly connected to a liquid inlet pipe, which is connected to the external electrolyte.

2. The liquid injection device for a carbon fiber battery according to claim 1, characterized in that: The box body (16) is provided with rounded corners (17) on the inner side surfaces corresponding to the flat belt (13) on all sides; both end surfaces of the piston (19) are provided with bellows (23) fixedly and sealedly connected thereto, and the other end of the bellows (23) is sealedly and fixedly connected to the side wall of the inner end of the injection cylinder (18).

3. The liquid injection device for a carbon fiber battery according to claim 1, characterized in that: The upper end surface of the slider (10) is provided with a third telescopic rod (33) fixedly connected thereto, the telescopic end of the third telescopic rod (33) is fixedly connected to the upper end surface of the slider (10), and the fixed end of the third telescopic rod (33) is fixedly connected to the mounting frame (4).

4. The liquid injection device for a carbon fiber battery according to claim 1, characterized in that: The flat belt (13) is composed of a tensile layer and an elastic layer. The inner side of the flat belt (13) is made of a material with good toughness and tensile strength to form a rough surface, and the outer surface of the flat belt (13) is made of a material with good elasticity and corrosion resistance to form a smooth surface.

5. The liquid injection device for a carbon fiber battery according to claim 1, characterized in that: The conveyor belt (2) is driven by electricity. Both ends of the conveyor belt (2) correspond to external automatic conveying devices. A plurality of push blocks (3) fixedly connected to the conveyor belt (2) are evenly distributed on the surface of the conveyor belt (2). The distance between the push blocks (3) corresponds to the length of the battery.

6. The liquid injection device for a carbon fiber battery according to claim 5, characterized in that: The push block (3) is fixedly connected to the conveyor belt (2) by means of screws. A limit block (8) is installed on one side of the push block (3). A second telescopic rod (9) is fixedly installed inside the limit block (8). The telescopic end of the second telescopic rod (9) is fixedly connected to the push block (3).

7. The liquid injection device for a carbon fiber battery according to claim 1, characterized in that: A first telescopic rod (5) is symmetrically fixedly mounted on the inner side surface of the mounting frame (4); a guide plate (6) is fixedly connected to the telescopic end of the first telescopic rod (5); and an arc-shaped outward expansion opening (7) is provided at one end of the guide plate (6) away from the mounting frame (4) in a width direction corresponding to the battery.

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