Liquid injection sealing device for cylindrical secondary lithium battery

Abstract

The utility model relates to the technical field of lithium battery liquid injection, in particular to a cylindrical secondary lithium battery liquid injection sealing device which comprises a bottom frame, a moving platform and a moving part, the bottom frame is fixedly connected with a motion platform; a moving part is slidably connected to the moving platform; the device further comprises a bearing plate, a clamping assembly and the like. A plurality of cylindrical grooves which are linearly distributed at equal intervals are formed in the bearing plate; two clamping assemblies used for clamping the cylindrical battery are connected to the bottom frame, and the two clamping assemblies are symmetrically distributed front and back. According to the liquid injection sealing device for the cylindrical secondary lithium battery obtained through the design, all the cylindrical batteries are clamped through the semicircular rings of the two clamping assemblies, and a circular ring and a cylinder formed by the semicircular rings form a sealed space on the upper parts of the cylindrical batteries, so that the sealing space can be prevented from being damaged when an electrolyte is subsequently conveyed; irritant gas emitted by the electrolyte escapes in the air and is inhaled into the body of an operator, so that the body health of the operator is harmed.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery liquid filling technology, and more specifically, to a cylindrical secondary lithium battery liquid filling and sealing device. Background Technology

[0002] Because lithium battery electrolyte contains harmful components and emits harmful and irritating gases, and the existing technology for filling lithium batteries with electrolyte lacks a sealing mechanism, a large amount of irritating gases are emitted during the filling process. This causes operators to inhale harmful and irritating gases for a long time during the work process, which endangers the health of the operators. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing lithium battery filling devices, which lack a sealing mechanism and release a large amount of irritating gas during the filling process, causing operators to inhale harmful irritating gases for extended periods, thus endangering their health. This invention provides a sealing device that absorbs the irritating gases released during the battery filling process, preventing them from dispersing into the air and harming the operator's health. Furthermore, it immediately seals the battery after filling to prevent the release of irritating gases during transport.

[0004] Another objective of this invention is to provide a cylindrical secondary lithium battery liquid injection and sealing device with the above-mentioned functions.

[0005] The embodiments of this utility model are achieved through the following technical solution: a cylindrical secondary lithium battery liquid injection and sealing device, including a base frame, a moving platform, and a moving part; the moving platform is fixedly connected to the base frame; the moving part is slidably connected to the moving platform; it also includes a receiving plate, a clamping assembly, a pushing assembly, a mounting block, a liquid injector, a spring, a cylinder, and a cylindrical tube; the receiving plate is fixedly connected to the moving part; the receiving plate has several cylindrical grooves that are equidistantly distributed in a straight line; two clamping assemblies for clamping cylindrical batteries are connected to the base frame, and the two clamping assemblies are symmetrically distributed front and back; A pushing assembly is connected to the frame and is located behind the clamping assembly; a mounting block is connected to the pushing assembly; several injectors are fixedly attached to the mounting block in a straight line at equal intervals; a spring is fixedly attached to the lower part of each injector; a cylinder is fixedly attached to the lower part of each spring and the cylinder is inserted into the lower part of the injector; a circular tube is connected to the outer side of each cylinder; the distance between two adjacent injectors is equal to the distance between two adjacent cylindrical grooves on the receiving plate; the pushing assembly is used to drive the mounting block, injectors, springs, cylinders and circular tubes to move together.

[0006] Optionally, the clamping assembly includes a support platform, an electric push rod, a fixing plate, and semicircular rings; two support platforms symmetrically distributed front and rear are fixed to the base frame, and the moving part is located between the two support platforms; an electric push rod is fixed to each support platform; a fixing plate is fixed to the telescopic part of each electric push rod; several semicircular rings are fixed to each fixing plate in a straight line at equal intervals; the inner arc surface of the semicircular rings is adapted to the cylindrical battery; the inner arc surface of the semicircular rings is provided with a limiting part; all semicircular rings are located below the five injectors.

[0007] Optionally, the pushing component includes a mounting bracket and a second electric push rod; the mounting bracket is fixedly connected to the base frame and is located behind the support platform; the second electric push rod is fixedly connected to the mounting bracket; the telescopic part of the second electric push rod is fixedly connected to the mounting block.

[0008] Optionally, it also includes two electric push rods three fixedly connected to each cylinder; each of the telescopic parts of the two electric push rods three is fixedly connected to a fixing block; a push ring is fixedly connected to both fixing blocks; a vertical sliding groove is opened on the inner ring surface of the cylinder; a sliding ring is slidably connected in the vertical sliding groove; several springs two are fixedly connected to the upper surface of the sliding ring, and all springs two are fixedly connected to the sliding ring; a pressure plate is rotatably connected to the inner ring surface of the sliding ring through a rotating shaft, and a torsion spring is provided between the pressure plate and the inner ring surface of the sliding ring; a clearance hole is opened on the pressure plate; a receiving part is provided on the inner arc surface of the sliding ring; a slot is opened on the lower surface of the pressure plate; the push ring fits against the upper surface of the pressure plate; an inclined surface is opened on the upper surface of each semi-circular ring; two protrusions distributed in a ring array are provided on the lower surface of the pressure plate.

[0009] Optionally, it also includes a fixed seat fixed to the support platform, and the fixed seat is located to the left of the electric push rod; a pressure roller is rotatably connected to both fixed seats, and the lowermost side of the pressure roller is flush with the upper surface of the cylindrical battery.

[0010] Optionally, a sealing strip is provided on the cross-section of each semicircular ring.

[0011] Optionally, a sealing ring is provided on the lower surface of each cylinder.

[0012] The beneficial effects of this utility model are:

[0013] The cylindrical secondary lithium battery electrolyte filling and sealing device obtained by the above design uses two clamping components with semi-circular rings to hold all cylindrical batteries. The semi-circular rings and the cylinder form a sealed space at the top of the cylindrical battery. This can prevent the irritating gas emitted by the electrolyte from escaping into the air and being inhaled by the operator during subsequent electrolyte delivery, thus avoiding harm to the operator's health.

[0014] This utility model, through the above-described cylindrical secondary lithium battery electrolyte filling and sealing device, uses a pressure plate to push the top cover from an inclined position to a horizontal position, pressing the top cover into the cylindrical battery to seal the filled cylindrical battery. Compared to transporting the filled cylindrical battery to the next process for sealing, this not only optimizes the cylindrical battery production process but also saves a significant amount of time. Furthermore, by filling and sealing the cylindrical battery within a sealed space, it prevents the irritating gases emitted by the electrolyte from escaping into the air during transport, thus avoiding harm to the health of operators. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0016] Figure 1 This is a three-dimensional structural diagram of the cylindrical secondary lithium battery liquid injection and sealing device of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the clamping assembly of the cylindrical secondary lithium battery liquid injection sealing device of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the liquid injector, spring 1, cylinder, tube, electric push rod 3, fixing block, push ring, spring 2, slip ring and pressure plate of the cylindrical secondary lithium battery liquid injection sealing device of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the liquid injector, spring 1, cylinder, electric push rod 3, fixing block, push ring, spring 2, slip ring and pressure plate of the cylindrical secondary lithium battery liquid injection sealing device of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the cylindrical battery and top cover of the cylindrical secondary lithium battery liquid injection and sealing device of this utility model.

[0021] The markings in the attached diagram are: 1-base frame, 2-motion platform, 3-moving part, 4-support plate, 5-mounting block, 6-liquid injector, 7-spring one, 8-cylinder, 9-round tube, 10-cylindrical battery, 11-top cover.

[0022] 101-Support platform, 102-Electric push rod one, 103-Fixing plate, 104-Semi-circular ring,

[0023] 201-Mounting bracket, 202-Electric push rod two,

[0024] 301-Electric push rod three, 302-Fixing block, 303-Push ring, 304-Spring two, 305-Slip ring, 306-Pressure plate.

[0025] 401 - Fixed base, 402 - Pressure roller

[0026] 1001-Annular groove, 4001-Cylindrical groove, 8001-Vertical slide, 10401-Limiting part, 10402-Ceiling surface, 30501-Receiving part, 30601-Allowing hole, 30602-Slot, 30603-Protrusion. Detailed Implementation

[0027] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0028] Example

[0029] Cylindrical secondary lithium battery electrolyte filling and sealing device, such as Figures 1-5 As shown, it includes a base frame 1, a motion platform 2, and a motion part 3; the motion platform 2 is bolted to the base frame 1; the motion part 3 is slidably connected to the motion platform 2.

[0030] It also includes a receiving plate 4, a clamping assembly, a pushing assembly, a mounting block 5, a liquid injector 6, a spring 7, a cylinder 8, and a cylindrical tube 9; the receiving plate 4 is fixedly connected to the moving part 3; the receiving plate 4 has five cylindrical grooves 4001 that are equidistantly distributed in a straight line; two clamping assemblies are connected to the base frame 1, and the two clamping assemblies are symmetrically distributed front and back; a pushing assembly is connected to the base frame 1, and the pushing assembly is located behind the clamping assembly; a mounting block 5 is connected to the pushing assembly; and bolts are used to connect the mounting block 5. Five injectors 6 are arranged in a straight line at equal intervals; each injector 6 has a spring 7 fixedly attached to its lower part; each spring 7 has a cylinder 8 fixedly attached to its lower part, and the cylinder 8 is inserted into the lower part of the injector 6; a circular tube 9 is connected to the outside of each cylinder 8; the distance between two adjacent injectors 6 is equal to the distance between two adjacent cylindrical grooves 4001 on the receiving plate 4; the pushing assembly is used to drive the mounting block 5, injectors 6, springs 7, cylinders 8 and circular tubes 9 to move downward or upward together.

[0031] The clamping assembly includes a support platform 101, an electric push rod 102, a fixing plate 103, and semicircular rings 104. Two support platforms 101 are fixedly mounted on the base frame 1 in a symmetrical arrangement, and the moving part 3 is located between the two support platforms 101. Each support platform 101 is bolted to an electric push rod 102. A fixing plate 103 is fixedly mounted on the telescopic part of each electric push rod 102. Five semicircular rings 104 are fixedly mounted on each fixing plate 103 in a straight line at equal intervals. The inner arc surface of the semicircular rings 104 is adapted to the cylindrical battery 10. A limiting part 10401 is provided on the inner arc surface of the semicircular rings 104. All semicircular rings 104 are located below the five liquid injectors 6.

[0032] The pushing assembly includes a mounting bracket 201 and an electric push rod 202; the mounting bracket 201 is fixedly connected to the base frame 1 and is located behind the support platform 101; the electric push rod 202 is bolted to the mounting bracket 201; the telescopic part of the electric push rod 202 is fixedly connected to the mounting block 5.

[0033] It also includes two electric push rods 301 bolted to each cylinder 8; each of the telescopic parts of the two electric push rods 301 is fixedly connected to a fixing block 302; a push ring 303 is fixedly connected to both fixing blocks 302; a vertical sliding groove 8001 is opened on the inner ring surface of the cylinder 8; a sliding ring 305 is slidably connected in the vertical sliding groove 8001; four springs 304 are fixedly connected to the upper surface of the sliding ring 305, and all springs 304 are fixedly connected to the sliding ring 305; the inner ring surface of the sliding ring 305 is connected to a rotating shaft. A pressure plate 306 is rotatably connected, and a torsion spring is provided between the pressure plate 306 and the inner ring surface of the slip ring 305; an clearance hole 30601 is provided on the pressure plate 306; a receiving part 30501 is provided on the inner arc surface of the slip ring 305; a slot 30602 is provided on the lower surface of the pressure plate 306; a push ring 303 is fitted with the upper surface of the pressure plate 306; an inclined surface 10402 is provided on the upper surface of each semicircular ring 104; and two protrusions 30603 arranged in a ring array are provided on the lower surface of the pressure plate 306.

[0034] It also includes a fixed seat 401 fixed to the support platform 101, and the fixed seat 401 is located to the left of the electric push rod 102; the two fixed seats 401 are rotatably connected to the pressure roller 402, and the lowermost side of the pressure roller 402 is flush with the upper surface of the cylindrical battery 10.

[0035] Each semicircular ring 104 has a sealing strip on its cross-section.

[0036] A sealing ring is provided on the lower surface of each cylinder 8.

[0037] The working steps of this embodiment are as follows:

[0038] The following directions are Figure 1As the reference point for the view, the direction where the 4th label on the receiving plate is located is to the right;

[0039] The rotations described below refer to views from front to back, from top to bottom, and from right to left.

[0040] When in use, first place this cylindrical secondary lithium battery liquid filling and sealing device in the required position, connect an external power source to all components that require electric drive, connect an external electrolyte delivery pipe to the liquid inlet of all liquid injectors 6, install a hose on each of all round tubes 9, and connect an external air extraction device to all hoses.

[0041] The operator places the five cylindrical batteries 10 requiring liquid injection into the five cylindrical slots 4001 of the receiving plate 4, with the top cover 11 of each cylindrical battery 10 facing directly to the left. Then, the operator controls the moving part 3 to move to the left on the moving platform 2. The moving part 3 moves the receiving plate 4 and the five cylindrical batteries 10 to the left together, moving the five cylindrical batteries 10 directly below the five injectors 6 and between the semicircular rings 104 of the two clamping components. Next, the operator controls the extension and retraction of the two electric push rods 102 to extend, causing all the semicircular rings 104 of the two clamping components to move towards each other, allowing all the symmetrically distributed semicircular rings 104 to merge into five rings, clamping the five cylindrical batteries 10. The limiting parts 10401 on all the semicircular rings 104 are engaged in the annular grooves 1001 of the cylindrical batteries 10. Finally, the operator controls the extension and retraction of the electric push rod 202 to extend, causing the mounting block 5 to move. The injector 6, spring 7, cylinder 8, tube 9, electric push rod 301, fixing block 302, push ring 303, spring 2 304, slip ring 305, and pressure plate 306 move downwards together. After the lower surface of each cylinder 8 is in contact with a ring, and the top cover 11 connected to each cylindrical battery 10 is also inside the corresponding cylinder 8, and the outlet of the injector 6 is moved above the cylindrical battery 10 (i.e., the outlet of the injector 6 is slightly higher than the top cover 11 of the cylindrical battery 10), all springs 7 will be compressed until the lower part of the injector 6 is inserted into the upper part of the cylinder 8, sealing the upper part of the cylinder 8. This creates a sealed space between the ring formed by the semi-circular ring 104 and the cylinder 8 in the upper part of the cylindrical battery 10. This prevents the irritating gas emitted by the electrolyte from escaping into the air and being inhaled by the operator during subsequent electrolyte delivery, thus protecting the operator's health.

[0042] Simultaneously, the electrolyte is supplied into the cylindrical battery 10 through the outlet of the injector 6. After the electrolyte is discharged from the outlet of the injector 6, the telescopic parts of all electric push rods 301 on each cylinder 8 are extended, causing the fixed block 302 and the push ring 303 to move downwards together. The push ring 303 pushes the pressure plate 306 to rotate downwards on the slip ring 305 around the pivot. The lower surface of the pressure plate 306 contacts the top of the top cover 11 of the cylindrical battery 10, forcing the top cover 11 to move downwards. During the movement, the top cover 11 contacts the inclined surfaces 10402 of the two semi-circular rings 104. Guided by the inclined surfaces 10402, the inclined top cover 11 moves downwards. The rotation of the pressure plate 306 forces the top cover 11 to rotate from an inclined position to a horizontal position. After the pressure plate 306 rotates to a horizontal position, the receiving part 30501 of the slip ring 305 will be inserted into the slot 30602 of the pressure plate 306. The two protrusions 30603 of the pressure plate 306 will continue to drive the slip ring 305 and the top cover 11 to move downward along the vertical slide groove 8001. During the downward movement of the horizontal top cover 11, it will also be affected by the inclined surfaces 10402 of the two semi-circular rings 104, allowing the top cover 11 to be inserted into the cylindrical battery 10 along the two inclined surfaces 10402 until the top cover 11 is inserted into the cylindrical battery 10, sealing the cylindrical battery 10 after liquid filling.

[0043] The operator controls the external vacuum equipment to start, and when the electrolyte is delivered into the cylindrical battery 10 through the hose and the round tube 9 by the injector 6, the irritating gas released by the electrolyte in the sealed space is extracted. After the irritating gas in the sealed space is removed, the telescopic parts of all electric push rods 202 and 301 are controlled to retract, driving the connected parts to reset. In this way, the top cover 11 is pushed from an inclined position to a horizontal position by the pressure plate 306, and the top cover 11 is pressed into the cylindrical battery 10, sealing the cylindrical battery 10 after electrolyte injection. Compared with transporting the cylindrical battery 10 after electrolyte injection to the next process for sealing, this not only optimizes the production process of the cylindrical battery 10, but also saves a lot of time. Furthermore, injecting and sealing the cylindrical battery 10 in a sealed space can prevent the irritating gas emitted by the electrolyte in the cylindrical battery 10 from being released into the air during the transportation process, which would endanger the health of the operators.

[0044] It should be noted that the gap between the two semicircular rings 104 after they are joined together is sealed by a sealing strip, and the gap between the cylinder 8 and the two joined semicircular rings 104 is sealed by a sealing ring to prevent irritating gases from escaping into the air.

[0045] After all the cylinders 8 detach from the semicircular rings 104, the telescopic parts of the two electric push rods 102 are retracted, driving the connected components to reset, so that all the semicircular rings 104 no longer clamp the cylindrical batteries 10. Then, the moving part 3 is controlled to drive the sealed cylindrical batteries 10 to continue moving to the left. During the leftward movement of all the cylindrical batteries 10, because the bottom side of the pressure roller 402 is flush with the upper surface of the cylindrical batteries 10, the pressure roller 402 will contact the upper surface of all the cylindrical batteries 10. The upper surface of the cylindrical batteries 10 is the top cover 11. The pressure roller 402 presses the top cover 11 of the cylindrical batteries 10 tightly to prevent the electrolyte inside the cylindrical batteries 10 from leaking due to the top cover 11 not being pressed tightly. After all the cylindrical batteries 10 are pressed by the pressure roller 402, all the cylindrical batteries 10 will be moved to the leftmost position, and the operator will remove all the cylindrical batteries 10.

[0046] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A liquid injection sealing device for cylindrical secondary lithium batteries, comprising a base frame (1), a moving platform (2) and a moving part (3); the moving platform (2) is fixedly connected to the base frame (1); the moving part (3) is slidably connected to the moving platform (2); characterized in that: It also includes the receiving plate (4), clamping assembly, push assembly, mounting block (5), liquid injector (6), spring one (7), cylinder (8) and pipe (9); the moving part (3) is fixedly connected with the receiving plate (4); a plurality of cylindrical grooves (4001) are arranged on the receiving plate (4); the chassis (1) is connected with two clamping assemblies for clamping the cylindrical battery (10), and the two clamping assemblies are symmetrically distributed front and back; the chassis (1) is connected with the push assembly, and the push assembly is located behind the clamping assembly; the push assembly is connected with the mounting block (5); a plurality of liquid injectors (6) are fixedly connected to the mounting block (5); the lower part of each liquid injector (6) is fixedly connected with a spring one (7); the lower part of each spring one (7) is fixedly connected with a cylinder (8), and the cylinder (8) is inserted with the lower part of the liquid injector (6); one pipe (9) is connected to the outside of each cylinder (8); the distance between the adjacent two liquid injectors (6) is equal to the distance between the adjacent two cylindrical grooves (4001) on the receiving plate (4); the push assembly is used to drive the mounting block (5), the liquid injector (6), the spring one (7), the cylinder (8) and the pipe (9) to move together.

2. The liquid injection sealing device for cylindrical secondary lithium batteries according to claim 1, wherein: The clamping assembly includes a support table (101), an electric push rod one (102), a fixed plate (103) and a semicircle (104); the chassis (1) is fixedly connected with two support tables (101) which are symmetrically distributed front and back, and the moving part (3) is located between the two support tables (101); each support table (101) is fixedly connected with an electric push rod one (102); the telescopic part of each electric push rod one (102) is fixedly connected with a fixed plate (103); a plurality of semicircles (104) are fixedly connected to each fixed plate (103); the inner arc surface of the semicircle (104) is matched with the cylindrical battery (10); the inner arc surface of the semicircle (104) is provided with a limiting portion (10401); all the semicircles (104) are located below the five liquid injectors (6).

3. The liquid injection sealing device for cylindrical secondary lithium batteries according to claim 2, characterized in that: The push assembly includes a mounting bracket (201) and an electric push rod two (202); the chassis (1) is fixedly connected with the mounting bracket (201), and the mounting bracket (201) is located behind the support table (101); the mounting bracket (201) is fixedly connected with the electric push rod two (202); the telescopic part of the electric push rod two (202) is fixedly connected with the mounting block (5).

4. The liquid injection sealing device for cylindrical secondary lithium batteries according to claim 3, wherein: Two electric push rods three (301) are further connected to each cylinder (8); the telescopic part of each electric push rod three (301) is connected with a fixed block (302); the two fixed blocks (302) are connected with a push ring (303); the inner ring surface of the cylinder (8) is provided with a vertical sliding groove (8001); the sliding ring (305) is slidably connected in the vertical sliding groove (8001); the upper surface of the sliding ring (305) is connected with a plurality of spring two (304), and all spring two (304) are connected with the sliding ring (305); the inner ring surface of the sliding ring (305) is rotatably connected with a pressing plate (306) through a rotating shaft, and a torsional spring is arranged between the pressing plate (306) and the inner ring surface of the sliding ring (305); the pressing plate (306) is provided with an avoiding hole (30601); the inner arc surface of the sliding ring (305) is provided with a receiving part (30501); the lower surface of the pressing plate (306) is provided with a clamping groove (30602); the push ring (303) is attached to the upper surface of the pressing plate (306); the upper surface of each semicircle ring (104) is provided with an inclined surface (10402); the lower surface of the pressing plate (306) is provided with two protruding parts (30603) arranged in an annular array.

5. The liquid injection sealing device for cylindrical secondary lithium batteries according to claim 4, wherein: The fixed seat (401) is further connected to the support table (101), and the fixed seat (401) is located to the left of the electric push rod one (102); the two fixed seats (401) are rotatably connected with a pressing roller (402), and the lowermost side of the pressing roller (402) is flush with the upper surface of the cylindrical battery (10).

6. The liquid injection sealing device for cylindrical secondary lithium batteries according to claim 2, characterized in that: The cutting surface of each semicircle ring (104) is provided with a sealing strip.

7. The liquid injection sealing device for cylindrical secondary lithium batteries according to claim 1, wherein: The lower surface of each cylinder (8) is provided with a sealing ring.

Images