Square lithium battery liquid injection, discharging and carrying device

Abstract

The invention relates to the technical field of battery transfer equipment, in particular to a square lithium battery liquid injection, discharging and carrying device which comprises a moving unit, a lifting unit is arranged on the moving unit, a clamping unit is arranged at the lower end of the lifting unit, and a lithium battery storage unit is arranged on the lower portion of the clamping unit. In the process of clamping the outer package of the square lithium battery, air is blown out through the first exhaust port and the second exhaust port, so that the outer package of the square lithium battery is kept in a vertical state, subsequent clamping is facilitated, in the clamping process, after the rubber pad descends to block the first exhaust port, the second exhaust port can spray out stronger airflow, and the clamping efficiency is improved. The clamping jaws are arranged on the outer packaging bag to ensure that the outer packaging bag of the square lithium battery is more concentrated and convenient to clamp, when the outer packaging bag of the square lithium battery is clamped through the clamping jaws and the rubber pads, due to the inertia effect, when the square lithium battery is thrown out, the outer packaging bag can be clamped more tightly by the two rubber pads, and the risk that the square lithium battery is thrown out is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery transfer equipment, in particular to a square lithium battery liquid injection discharge carrying device. BACKGROUND

[0002] Lithium batteries are a class of batteries that use lithium metal or lithium alloy as positive and negative materials, and use non-aqueous electrolyte solution, wherein lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium metal batteries generally use manganese dioxide as a positive material, lithium metal or its alloy metal as a negative material, and use non-aqueous electrolyte solution. Lithium ion batteries generally use lithium alloy metal oxide as a positive material, graphite as a negative material, and use non-aqueous electrolyte. Lithium ion batteries do not contain metallic lithium and can be charged. Soft-pack lithium batteries are a type of lithium ion battery. Soft-pack lithium batteries have a layer of polymer shell on the liquid lithium ion battery. Soft-pack lithium batteries have the characteristics of light weight and high safety. Because the polymer shell mostly uses aluminum plastic film as packaging material, the overall weight is light, and in the case of safety hazards, soft-pack lithium batteries will only swell and crack, but will not explode, thus having higher safety.

[0003] A square soft-pack lithium battery secondary edge sealing automatic feeding equipment with patent application number CN202411656164.X, including: a tray conveying plane for conveying battery trays; a tray output plane for outputting empty trays; a moving device; a material taking device; a turnover clamp plane device; and a material placing device; the end of the tray conveying plane is adjacent to the beginning of the tray output plane, the moving device is used to move the empty battery trays; the material taking device is arranged near the end of the tray conveying plane, the battery in the tray is taken out through the material taking device, and the turnover clamp plane device is close to the material taking device.

[0004] The outer packaging bag of the square lithium battery is usually packaged with soft film, so that the clamping jaw is easy to damage the outer packaging bag of the square lithium battery during clamping. During clamping and transportation, due to inertia, if the clamping is not tight, the square lithium battery with the outer packaging bag will be thrown off and separated from the clamping of the clamping jaw. SUMMARY

[0005] To solve the above technical problems, the present application provides a square lithium battery liquid injection discharge carrying device.

[0006] The square lithium battery liquid injection discharge carrying device of the present application comprises a moving unit, a lifting unit is arranged on the moving unit, a clamping unit is arranged at the lower end of the lifting unit, and a lithium battery storage unit is arranged at the lower part of the clamping unit. The clamping unit is used for clamping lithium batteries and comprises a clamping jaw, and a rubber pad is arranged at the end of the clamping jaw. The lithium battery storage unit is used for storing the lithium battery after liquid injection is completed, comprising a placing mold, a clamping groove is arranged on the placing mold, a placing groove is arranged at the middle lower part of the clamping groove, a first exhaust port is arranged in the clamping groove, and a second exhaust port is arranged in the placing groove.

[0007] Preferably, the moving unit comprises limiting rails, two limiting rails are arranged, and a sliding block is slidably arranged on each of the two limiting rails.

[0008] Preferably, a driving motor is arranged at the side end of the limiting rail, a driving wheel is arranged at the output end of the driving motor, a vertical plate is arranged at the end of the limiting rail away from the driving motor, a driven wheel is rotatably arranged on the vertical plate, a conveying belt is arranged between the driving wheel and the driven wheel, a fixed block is arranged on the mounting plate, and the conveying belt passes through and is fixed to the fixed block.

[0009] Preferably, the lifting unit comprises a lifting plate, two first limiting rods are arranged on the lifting plate, two corresponding first limiting sleeves are arranged on the mounting plate, the first limiting rods are lifted in the first limiting sleeves, and mounting frames are arranged at the upper ends of the two first limiting rods.

[0010] Preferably, a first lifting motor is arranged on the mounting frame, a screw rod is arranged at the output end of the first lifting motor, a threaded sleeve is arranged on the mounting plate, the screw rod cooperates with the threaded sleeve, and the lower end of the screw rod rotatably cooperates with the lifting plate.

[0011] Preferably, a cylinder is arranged at the lower end of the lifting plate, the output end of the cylinder passes through the lifting plate, the output end of the cylinder is provided with a telescopic rod, the upper end of the telescopic rod is provided with a connecting plate, the lower end of the connecting plate is provided with two second limiting rods, two second limiting sleeves are further arranged on the lifting plate, the second limiting rods pass through the second limiting sleeves, the lower ends of the two second limiting rods are further provided with a horizontal plate, and the clamping unit is arranged at the lower end of the horizontal plate.

[0012] Preferably, the clamping unit further comprises a mounting block, a first air duct and a second air duct are arranged on the mounting block, a piston is arranged in the second air duct, limiting rings are arranged at the upper and lower ends of the second air duct, the upper end of the second air duct is in communication with the first air duct, and the lower end of the piston is provided with an extension rod.

[0013] Preferably, a U-shaped groove is arranged at the lower end of the mounting block, the clamping jaw is located in the U-shaped groove, the lower end of the extension rod is rotatably connected to one side of the clamping jaw, an auxiliary rod is arranged in the U-shaped groove, and a groove matched with the auxiliary rod is arranged on the clamping jaw.

[0014] Preferably, the mounting block is further provided with connectors on both sides, which are connected with external air pipes.

[0015] The beneficial effects of the present application compared with the prior art are: By setting the rubber pad, the first exhaust port and the second exhaust port, in the process of clamping the outer package of the square lithium battery, air is blown out through the first exhaust port and the second exhaust port to keep the outer package of the square lithium battery in a vertical state, facilitating subsequent clamping. In the clamping process, after the rubber pad descends to block the first exhaust port, the second exhaust port will spray stronger airflow to ensure that the outer package of the square lithium battery is more concentrated, facilitating clamping. When the outer package of the square lithium battery is clamped by the clamping jaw and the rubber pad, due to the effect of inertia, the clamping of the two rubber pads on the outer package will be tighter when the square lithium battery is thrown out, reducing the risk of being thrown out and improving the stability of the equipment in transferring the square lithium battery out of the material. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a structural schematic diagram of the moving unit of the present application; Figure 3 is a structural schematic diagram of the clamping unit and the lifting unit of the present application; Figure 4 is a structural schematic diagram of the clamping unit of the present application; Figure 5 is a structural schematic diagram of the Figure 4 is a partial enlarged structural schematic diagram of A in the present application; Figure 6 is a side view structural schematic diagram of the mounting block of the present application; Figure 7 is a structural schematic diagram of the lithium battery storage unit of the present application; Figure 8 is a structural schematic diagram of the Figure 7 is a partial enlarged structural schematic diagram of B in the present application.

[0017] Reference numerals: 1. Moving unit; 2. Lifting unit; 3. Clamping unit; 4. Lithium battery storage unit; 101. Limiting track; 102. Slider; 103. Mounting plate; 104. Drive motor; 105. Drive wheel; 106. Vertical plate; 107. Driven wheel; 108. Conveyor belt; 109. Fixing block; 201. Lifting plate; 202. First limiting rod; 203. First limiting sleeve; 204. Mounting bracket; 205. First lifting motor; 206. Screw; 207. Threaded sleeve; 208. Cylinder; 209. 1. Telescopic rod; 210. Connecting plate; 211. Second limiting rod; 212. Second limiting sleeve; 213. Horizontal plate; 301. Gripper; 302. Rubber pad; 303. Mounting block; 304. First air passage; 305. Second air passage; 306. Piston; 307. Limiting ring; 308. Extension rod; 309. U-shaped groove; 310. Auxiliary rod; 311. Groove; 312. Connector; 401. Placement mold; 402. Clamping groove; 403. Placement groove; 404. First exhaust port; 405. Second exhaust port. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0019] Example 1 like Figures 1 to 7 As shown, this invention discloses a square lithium battery liquid injection and discharge conveying device, including a moving unit 1, a lifting unit 2 on the moving unit 1, a clamping unit 3 at the lower end of the lifting unit 2, and a lithium battery storage unit 4 at the lower part of the clamping unit 3. The entire device is installed on a supporting facility, and the device needs to be used in conjunction with the supporting facility. The moving unit 1 and the lifting unit 2 can adjust the clamping unit 3 horizontally and vertically. After the square lithium battery is liquid injected, it will enter the lithium battery storage unit 4 for temporary storage, and then be clamped by the clamping unit 3. After the clamping unit 3 has clamped the battery, the moving unit 1 and the lifting unit 2 work together to transport the lithium battery to the designated position of the next process.

[0020] The moving unit 1 includes a limiting rail 101, and there are two limiting rails 101. A slider 102 is slidably mounted on each of the two limiting rails 101. A mounting plate 103 is mounted on each of the two sliders 102. The limiting rails 101 are mounted on the matching facilities. The sliders 102 can move laterally along the limiting rails 101, thereby adjusting the lateral position of the mounting plate 103.

[0021] The side end of the limiting track 101 is provided with a driving motor 104, the output end of the driving motor 104 is provided with a driving wheel 105, the end of the limiting track 101 away from the driving motor 104 is provided with a vertical plate 106, the vertical plate 106 is rotatably provided with a driven wheel 107, the driving wheel 105 and the driven wheel 107 are provided with a conveying belt 108, the mounting plate 103 is provided with a fixed block 109, the conveying belt 108 passes through the fixed block 109 and is fixed therewith, after the driving motor 104 is started, the output end of the driving motor 104 drives the rotation of the driving wheel 105, the rotation of the driving wheel 105 drives the rotation of the conveying belt 108, the conveying belt 108 cooperates with the fixed block 109 in the process of rotation, thereby driving the movement of the mounting plate 103, the transverse movement of the mounting plate 103 is controlled by the driving motor 104, so that the movement of the mounting plate 103 is more convenient and controllable.

[0022] The lifting unit 2 comprises a lifting plate 201, the lifting plate 201 is provided with two first limiting rods 202, the mounting plate 103 is provided with two corresponding first limiting sleeves 203, the first limiting rod 202 is lifted in the first limiting sleeve 203, the upper end of the two first limiting rods 202 is provided with a mounting frame 204, the mounting frame 204 is provided with a first lifting motor 205, the output end of the first lifting motor 205 is provided with a screw rod 206, the mounting plate 103 is provided with a threaded sleeve 207, the screw rod 206 cooperates with the threaded sleeve 207, the lower end of the screw rod 206 is rotatably connected with the lifting plate 201, the first lifting motor 205 is started, the output end of the first lifting motor 205 drives the rotation of the screw rod 206, the screw rod 206 cooperates with the threaded sleeve 207 in the process of rotation, so that the first lifting motor 205 and the threaded sleeve 207 relatively move, the first lifting motor 205 is arranged on the mounting frame 204, and the threaded sleeve 207 is located on the mounting plate 103, therefore, the mounting plate 103 and the mounting frame 204 relatively displace, in the process of relative displacement, the first limiting rod 202 and the first limiting sleeve 203 match each other, so that the relative displacement of the mounting plate 103 and the mounting frame 204 is more stable.

[0023] The lower end of the lifting plate 201 is provided with a cylinder 208, the output end of the cylinder 208 penetrates the lifting plate 201, the output end of the cylinder 208 is provided with a telescopic rod 209, the upper end of the telescopic rod 209 is provided with a connecting plate 210, the lower end of the connecting plate 210 is provided with two second limiting rods 211, the lifting plate 201 is further provided with two second limiting sleeves 212, the second limiting rod 211 penetrates the second limiting sleeve 212, the lower end of the two second limiting rods 211 is further provided with a horizontal plate 213, the clamping unit 3 is arranged at the lower end of the horizontal plate 213, the cylinder 208 is started, the output end of the cylinder 208 drives the movement of the telescopic rod 209, so that the connecting plate 210 is lifted, the second limiting rod 211 matches and limits the second limiting sleeve 212 during the lifting of the connecting plate 210, and the lifting of the connecting plate 210 drives the lifting of the horizontal plate 213 through the second limiting rod 211, so that the vertical position adjustment of the clamping unit 3 is realized.

[0024] The clamping unit 3 comprises a clamping jaw 301 and a mounting block 303, the mounting block 303 is provided with a first air channel 304 and a second air channel 305, the second air channel 305 is provided with a piston 306, the upper and lower ends of the second air channel 305 are provided with limiting rings 307, the upper end of the second air channel 305 is communicated with the first air channel 304, the lower end of the piston 306 is provided with an extension rod 308, the lower end of the mounting block 303 is provided with a U-shaped groove 309, the clamping jaw 301 is located in the U-shaped groove 309, the lower end of the extension rod 308 is rotationally connected with one side of the clamping jaw 301, the U-shaped groove 309 is provided with an auxiliary rod 310, the clamping jaw 301 is provided with a groove 311 matched with the auxiliary rod 310, the mounting block 303 is further provided with a connector 312 on both sides, the connector 312 is connected with an external air pipe, when an external air pump uses the air pipe to send air into the first air channel 304, the air pressure in the first air channel 304 rises, the air pressure in the first air channel 304 acts on the piston 306 in the second air channel 305, so that the piston 306 moves downward, the piston 306 moves downward to drive the extension rod 308 to descend, the extension rod 308 descends to make the two clamping jaws 301 open, on the contrary, when the external air pump uses the air pipe to exhaust air in the first air channel 304, the air pressure in the first air channel 304 decreases, so that the piston 306 moves upward, and then the extension rod 308 rises to make the two clamping jaws 301 close.

[0025] The lithium battery storage unit 4 comprises a placing mold 401, the placing mold 401 is provided with a clamping groove 402, the placing mold 401 is provided with a placing groove 403 in the middle lower part of the clamping groove 402, after the square lithium battery is processed by liquid injection, the square lithium battery is sleeved with a bag, and then is sent into the placing groove 403 of the lithium battery storage unit 4.

[0026] In the use process, after the square lithium battery liquid injection processing is completed, the square lithium battery is sleeved with a bag, and then is sent into the placing groove 403 in the lithium battery storage unit 4.

[0027] The driving motor 104 is started, the output end of the driving motor 104 drives the rotation of the driving wheel 105, and the rotation of the driving wheel 105 drives the rotation of the conveying belt 108.

[0028] The first lifting motor 205 is started, the output end of the first lifting motor 205 drives the rotation of the screw rod 206, the screw rod 206 is threadedly matched with the threaded sleeve 207 in the rotation process, the first lifting motor 205 and the threaded sleeve 207 are relatively moved, the first lifting motor 205 is arranged on the mounting frame 204, the threaded sleeve 207 is located on the mounting plate 103, therefore, the mounting plate 103 and the mounting frame 204 are relatively displaced, the longitudinal position of the clamping unit 3 is adjusted, the clamping unit 3 enters the clamping groove 402, then the external air pump is started, the air pipe is used to pump air in the first air channel 304, the piston 306 moves upward, the two clamping jaws 301 are clamped when the piston 306 moves upward, the clamping jaws 301 clamp the packaging bag of the square lithium battery, the clamping unit 3 is moved to the placing area of the square lithium battery through the cooperation of the first lifting motor 205 and the driving motor 104.

[0029] When the square lithium battery is placed, the air cylinder 208 is started, the output end of the air cylinder 208 drives the movement of the telescopic rod 209, so that the connecting plate 210 is lifted, the second limiting rod 211 is matched with the second limiting sleeve 212 in the lifting process of the connecting plate 210, and the second limiting rod 211 drives the lifting of the horizontal plate 213 when the connecting plate 210 is lifted, and the first lifting motor 205 and the driving motor 104 are started, so that the two rows of clamping units 3 are placed row by row.

[0030] Embodiment two Based on the above-mentioned embodiment one, a square lithium battery liquid injection discharging carrying device is provided, in the use process, the outer packaging bag of the square lithium battery usually adopts soft film packaging, therefore, the clamping jaws 301 are easy to cause damage to the outer packaging bag of the square lithium battery in the clamping process, and the square lithium battery with the outer packaging bag is easy to be thrown and separated from the clamping of the clamping jaws 301 due to inertia in the clamping and transporting process, therefore, the following technical scheme is provided. As Figures 1 to 8As shown, the end of the clamping jaw 301 is provided with a rubber pad 302, and during the clamping process of the outer packaging bag of the square lithium battery, the rubber pad 302 is used for buffering, which can reduce the damage to the outer packaging bag, and on the other hand, due to the shape limitation of the rubber pad 302, when the outer packaging bag is thrown out, the extrusion of the two rubber pads 302 on the outer packaging bag will be tighter, thereby reducing the risk of the square lithium battery and the packaging bag being thrown out during the movement.

[0031] The first exhaust port 404 is arranged in the clamping groove 402, and the second exhaust port 405 is arranged in the placing groove 403. The external air pipe is in communication with the first exhaust port 404 and the second exhaust port 405. The external air pipe continuously supplies air, and the first exhaust port 404 and the second exhaust port 405 continuously blow air upward. Under the action of the air, the outer packaging bag of the square lithium battery can be kept in a vertical state, which facilitates the clamping of the clamping jaw 301 and the rubber pad 302.

[0032] During use, the external air pipe continuously supplies air to the first exhaust port 404 and the second exhaust port 405, and the first exhaust port 404 and the second exhaust port 405 continuously blow air upward. Under the action of the air, the outer packaging bag of the square lithium battery can be kept in a vertical state, which facilitates the clamping of the clamping jaw 301 and the rubber pad 302.

[0033] During the clamping process of the outer packaging of the square lithium battery by the clamping unit 3, as the clamping jaw 301 and the rubber pad 302 descend, the rubber pad 302 gradually blocks the first exhaust port 404. After the first exhaust port 404 is blocked, the airflow blown by the second exhaust port 405 is strengthened, so that the upper end of the outer packaging bag of the square lithium battery is more concentrated, facilitating subsequent clamping.

[0034] When the two clamping jaws 301 approach each other, the two rubber pads 302 will extrude and clamp the outer packaging bag of the square lithium battery. During the subsequent transfer process, the rubber pad 302 is used to reduce the damage to the outer packaging bag of the square lithium battery. At the same time, when the outer packaging bag is clamped and moved, due to the inertial effect, when the outer packaging bag is thrown out, the extrusion of the two rubber pads 302 on the outer packaging bag will be tighter, thereby reducing the risk of the square lithium battery and the packaging bag being thrown out during the movement, and making the equipment more stable for the transfer of the square lithium battery.

[0035] The main function realized by the present application is that: by setting the rubber pad 302, the first exhaust port 404 and the second exhaust port 405, during the clamping process of the outer packaging of the square lithium battery, air is blown out through the first exhaust port 404 and the second exhaust port 405 to keep the outer packaging of the square lithium battery in a vertical state, facilitating subsequent clamping. During the clamping process, after the rubber pad 302 descends to block the first exhaust port 404, the second exhaust port 405 will spray stronger airflow to ensure that the outer packaging bag of the square lithium battery is more concentrated, facilitating clamping. When the clamping jaw 301 and the rubber pad 302 clamp the outer packaging bag of the square lithium battery, due to the effect of inertia, when the square lithium battery is thrown out, the clamping of the two rubber pads 302 on the outer packaging will be tighter, reducing the risk of being thrown out, and improving the stability of the device for transferring the square lithium battery out of the material.

[0036] The square lithium battery liquid injection and discharging carrying device of the present application is installed, connected or arranged in a common mechanical manner, as long as the beneficial effects can be achieved.

[0037] All technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A square lithium battery liquid injection discharge carrying device, comprising a moving unit (1), characterized in that, The mobile unit (1) is provided with a lifting unit (2), the lower end of the lifting unit (2) is provided with a clamping unit (3), the lower part of the clamping unit (3) is provided with a lithium battery storage unit (4); The clamping unit (3) is used for clamping lithium batteries, comprising a clamping jaw (301), the end of the clamping jaw (301) is provided with a rubber pad (302); The lithium battery storage unit (4) is used for storing lithium batteries after liquid injection is completed, comprising a placing mold (401), the placing mold (401) is provided with a clamping groove (402), the placing mold (401) is provided with a placing groove (403) in the middle lower part of the clamping groove (402), the clamping groove (402) is provided with a first exhaust port (404), and the placing groove (403) is provided with a second exhaust port (405).

2. The square lithium battery liquid injection discharge carrying device according to claim 1, characterized in that, The mobile unit (1) comprises limiting rails (101), the limiting rails (101) are provided with two, the limiting rails (101) are provided with sliding blocks (102), and the sliding blocks (102) are provided with mounting plates (103).

3. The square lithium battery liquid injection discharge carrying device according to claim 2, characterized in that, The limiting rails (101) are provided with drive motors (104) at the side ends, the drive motors (104) are provided with drive wheels (105), one end of the limiting rails (101) away from the drive motors (104) is provided with vertical plates (106), the vertical plates (106) are provided with driven wheels (107), the drive wheels (105) and the driven wheels (107) are provided with transmission belts (108), the mounting plates (103) are provided with fixed blocks (109), and the transmission belts (108) pass through the fixed blocks (109) and are fixed thereto.

4. The square lithium battery liquid injection discharge carrying device according to claim 2, characterized in that, The lifting unit (2) comprises lifting plates (201), the lifting plates (201) are provided with two first limiting rods (202), the mounting plates (103) are provided with two corresponding first limiting sleeves (203), the first limiting rods (202) are lifted in the first limiting sleeves (203), and the upper ends of the first limiting rods (202) are provided with mounting frames (204).

5. The square lithium battery liquid injection discharge carrying device according to claim 4, characterized in that, The mounting frames (204) are provided with first lifting motors (205), the first lifting motors (205) are provided with screws (206), the mounting plates (103) are provided with threaded sleeves (207), the screws (206) are matched with the threaded sleeves (207), and the lower ends of the screws (206) are rotatably connected with the lifting plates (201).

6. The square lithium battery liquid injection discharge carrying device according to claim 4, characterized in that, The lower end of the lifting plate (201) is provided with a cylinder (208), the output end of the cylinder (208) penetrates the lifting plate (201), the output end of the cylinder (208) is provided with a telescopic rod (209), the upper end of the telescopic rod (209) is provided with a connecting plate (210), the lower end of the connecting plate (210) is provided with two second limiting rods (211), the lifting plate (201) is further provided with two second limiting sleeves (212), the second limiting rods (211) penetrate the second limiting sleeves (212), the lower ends of the two second limiting rods (211) are further provided with a horizontal plate (213), and the clamping unit (3) is arranged at the lower end of the horizontal plate (213).

7. The square lithium battery liquid injection discharge carrying device according to claim 1, characterized in that, The clamping unit (3) further comprises a mounting block (303), the mounting block (303) is provided with a first air channel (304) and a second air channel (305), a piston (306) is arranged in the second air channel (305), the upper and lower ends of the second air channel (305) are both provided with a limiting ring (307), the upper end of the second air channel (305) is in communication with the first air channel (304), and the lower end of the piston (306) is provided with an extension rod (308).

8. The square lithium battery liquid injection discharge carrying device according to claim 7, characterized in that, The lower end of the mounting block (303) is provided with a U-shaped groove (309), the clamping jaw (301) is located in the U-shaped groove (309), the lower end of the extension rod (308) is rotationally connected with one side of the clamping jaw (301), the U-shaped groove (309) is provided with an auxiliary rod (310), and the clamping jaw (301) is provided with a groove (311) matched with the auxiliary rod (310).

9. The square lithium battery liquid injection discharge carrying device according to claim 7, characterized in that, The two sides of the mounting block (303) are further provided with connectors (312), and the connectors (312) are connected with external air pipes.

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