A small steel shell battery liquid injection equipment

Abstract

The utility model discloses a small -size steel shell battery liquid injection equipment, including frame, two rows of liquid injection mechanism are equipped with at interval on the frame, be equipped with horizontal shift track between two rows of liquid injection mechanism, be equipped with the feeding manipulator and the unloading manipulator who can move left and right along horizontal shift track on horizontal shift track, the below of every two corresponding liquid injection mechanism all is equipped with battery fixture movement control mechanism, every battery fixture movement control mechanism can control two battery fixtures, two rows of battery clamp are equipped with at interval on battery fixture, two battery fixtures can alternate feeding and discharging. The utility model full automation production, from battery feeding to liquid injection complete discharge all are full automation processing, and liquid injection adopts the mode of simultaneous liquid injection of multiple batteries, and liquid injection is carried out by using the mode of buffer cup. A plurality of liquid injection mechanisms are arranged on the equipment, and the battery fixture movement control mechanism is used to alternately transplant the battery fixture to alternately enter the liquid injection, so that one battery fixture feeding and one battery fixture liquid injection can be realized. The waiting time of feeding and discharging is greatly reduced, the continuity of battery liquid injection production is realized, and the liquid injection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to liquid injection equipment for steel-cased batteries, and particularly to a small-sized liquid injection equipment for steel-cased batteries. Background Technology

[0002] A steel-cased lithium-ion battery consists of stacked cells, electrolyte, top cover, and square aluminum casing. The stacked cells are composed of alternating positive and negative electrode plates and separators. The injection of electrolyte after battery assembly and welding is an important step in battery production, which is usually achieved using an electrolyte injection device.

[0003] Currently, existing liquid injection devices inject liquid directly into the battery using injection needles. Each injection needle requires a corresponding injection pump, and each battery needs a corresponding injection needle. This results in a large number of injection pumps, as well as an increase in the number of liquid and vacuum pipelines required. Consequently, the overall structure of the device is not compact, and subsequent maintenance is difficult. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a small steel-cased battery liquid injection device.

[0005] The objective of this utility model is achieved through the following technical solution: a small steel-shell battery liquid injection device, comprising a frame, on which two rows of liquid injection mechanisms are arranged at intervals, and a transverse track is provided between the two rows of liquid injection mechanisms. On the transverse track are a loading robot and a unloading robot that can move left and right along the transverse track. Below each pair of corresponding liquid injection mechanisms is a battery fixture movement control mechanism, and each battery fixture movement control mechanism can control two battery fixtures. On the battery fixtures are two rows of battery clamps arranged at intervals, and the two battery fixtures can be loaded and unloaded alternately.

[0006] As an improvement of the small steel-shell battery electrolyte filling equipment of this utility model, the frame is also equipped with a material tray feeding conveyor line, a feeding weighing robot, a feeding buffer robot, a discharging weighing robot, a discharging and tray loading robot, a material tray handling robot, an empty material tray conveyor line, and a full material tray conveyor line. The material feeding conveyor line is equipped with a feeding barcode scanner, a feeding camera, and multiple material tray positioning cylinders. When the material tray is conveyed to the position of the feeding barcode scanner and the feeding camera, the feeding barcode scanner and the feeding camera scan and take pictures respectively. When the material tray is conveyed to the feeding position of the material tray feeding conveyor line, the material tray positioning cylinder positions the material tray.

[0007] As an improvement to the small steel-shell battery electrolyte injection device of this utility model, the feeding and weighing robot picks up batteries from the feeding position of the material tray feeding conveyor line and transports the batteries to the feeding and weighing station. The feeding and buffering robot picks up batteries from the feeding and weighing station and transports the batteries to the buffer fixture. The feeding robot picks up batteries from the buffer fixture and transports the batteries to one of the battery fixtures. When the battery fixture is full of batteries, the battery fixture movement control mechanism drives the battery fixture to move below the electrolyte injection mechanism for electrolyte injection. After the batteries are injected, the batteries... The fixture movement control mechanism moves the battery fixture to the loading position. The unloading robot takes out the battery after liquid filling from the battery fixture and transports the battery to the unloading buffer fixture. The unloading weighing robot takes the battery from the unloading buffer fixture and transports the battery to the unloading weighing station. The unloading tray loading robot takes the battery from the unloading weighing station and transports the battery to the tray on the full tray conveyor line. For each tray transported by the full tray conveyor line, the tray handling robot takes an empty tray from the empty tray conveyor line and places it on the full tray conveyor line.

[0008] As an improvement of the small steel-shell battery liquid injection device of this utility model, each of the liquid injection mechanisms includes a liquid injection tank and an upper mounting plate. The upper mounting plate is provided with a lifting control cylinder that can control the lifting and lowering of the liquid injection tank. The upper end of the liquid injection tank is provided with a lower fixing plate. The lower fixing plate is provided with two rows of liquid injection cup control mechanisms and two opening liquid injection mechanisms at intervals. The lower fixing plate is provided with a liquid injection cup seat corresponding to the position of each liquid injection cup control mechanism. A cup cover assembly is provided on one side of the liquid injection cup seat. A liquid injection cup is inserted through the liquid injection cup seat. The liquid outlet of the liquid injection cup can extend into the liquid injection tank. When the opening liquid injection mechanism injects liquid, it can press down to open the cup cover. The liquid injection cup control mechanism can control the lifting and lowering of the liquid injection cup. When the opening liquid injection mechanism opens the cup cover, the liquid injection cup control mechanism controls the liquid injection cup to rise, so that the liquid injection needle extends into the liquid inlet of the liquid injection cup.

[0009] The upper mounting plate and the lower mounting plate are connected at their four corners by guide rods. The upper mounting plate is also provided with guide sleeves at its four corners. The guide rods pass through the guide sleeves. The piston rod end of the lifting control cylinder is connected to the middle of the lower mounting plate.

[0010] As an improvement of the small steel-shell battery liquid injection device of this utility model, the opening liquid injection mechanism includes a transverse servo module, which controls the movement of a sliding seat. The sliding seat is provided with an opening cylinder, the piston rod end of the opening cylinder is provided with an opening pressure rod, the side of the opening cylinder is provided with an injection needle mounting seat, and the injection needle mounting seat is provided with an injection needle.

[0011] The transverse servo module includes a module profile, on which a transmission screw and a servo motor are provided. The output shaft of the servo motor is connected to the transmission screw through a coupling. The transmission screw is connected to the sliding seat through a screw nut. The bottom of the sliding seat is slidably connected to the module profile through a slider and a slide rail.

[0012] As an improvement of the small steel-shell battery liquid filling device of this utility model, the cup cover assembly includes a cup cover base and a cup cover. The middle part of the cup cover is rotatably connected to the cup cover base by a pivot pin. One end of the cup cover is movably connected to a pressure base by a pin. Pressure rods are provided on both sides of the pressure base. A spring rod is provided at the bottom of the pressure base. A spring is sleeved on the spring rod. The lower end of the pressure rod is connected to the lower fixed plate. When the opening pressure rod presses down on the pressure rod, one end of the cup cover sinks with the pressure base, and the other end tilts upward to open the liquid inlet hole of the liquid filling cup.

[0013] As an improvement of the small steel-shell battery liquid injection device of this utility model, the liquid injection cup control mechanism includes a cylinder mounting plate, a control cylinder is provided on one side of the cylinder mounting plate, a connecting plate is provided at the piston rod end of the control cylinder, a liquid injection cup connecting plate is provided on the connecting plate, and the liquid injection cup passes through the liquid injection cup connecting plate.

[0014] As an improvement of the small steel-shell battery liquid injection device of this utility model, the inner side of the transverse track is provided with a rack, the loading robot and the unloading robot are both provided with transverse drive motors, the output shaft of the transverse drive motor is provided with a gear, and the gear meshes with the rack for transmission;

[0015] Both the loading robot and the unloading robot include a mounting plate. A lifting servo module is provided in the middle of the mounting plate. The transverse drive motor is located at both ends of the mounting plate. The lifting servo module controls the movement of the lifting plate. A finger cylinder mounting plate is provided at the bottom of the lifting plate. Multiple finger cylinders are arranged at intervals on the finger cylinder mounting plate.

[0016] As an improvement of the small steel-shell battery liquid injection device of this utility model, the battery fixture movement control mechanism includes two parallel tracks, and two sets of second transverse servo modules are provided between the two tracks. Each second transverse servo module controls the movement of one battery fixture, and the battery fixture is connected to the track by a slider.

[0017] The second transverse servo module includes a module crossbeam, on which a servo motor and a transmission lead screw are mounted. The transmission lead screw is connected to the output shaft of the servo motor, and a lead screw nut is mounted on the transmission lead screw. The lead screw nut is connected to the battery fixture via a connecting plate.

[0018] As an improvement of the small steel-shell battery liquid injection device of this utility model, the bottom edge of the liquid injection tank is provided with an alignment seat, and each alignment seat is provided with a guide wheel; the guide wheel enables the alignment seat to be better engaged in the alignment slot and has a guiding function.

[0019] The edge of the battery fixture is provided with alignment slots corresponding to the positions of the alignment slots. When the liquid filling tank is placed on the battery fixture, the alignment slots are engaged in the alignment slots.

[0020] The beneficial effects of this utility model are as follows: The liquid injection mechanism of this utility model can buffer the liquid injection cup through the opening liquid injection mechanism. The opening liquid injection mechanism has an opening function. After the cup lid is opened, the liquid injection cup control mechanism controls the liquid injection cup to rise and connect with the liquid injection nozzle to realize liquid preparation. Two opening liquid injection mechanisms can simultaneously prepare liquid for two rows of liquid injection cups, improving liquid preparation efficiency. This utility model is a fully automated production process. From battery feeding to liquid injection completion and discharge, the entire process is fully automated. Liquid injection adopts a method of simultaneous liquid injection of multiple batteries, using a buffer cup for liquid injection. Multiple liquid injection mechanisms are set up on the equipment. The battery fixture movement control mechanism is used to alternately transfer battery fixtures and alternately enter the liquid injection process. It can realize that one battery fixture is fed and another battery fixture is injected, greatly reducing the waiting time for loading and unloading, realizing continuous liquid injection production of batteries, and improving liquid injection efficiency. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is the front view of this utility model;

[0023] Figure 3 This is a top view of the present invention;

[0024] Figure 4 This is a perspective view of the liquid injection mechanism of this utility model;

[0025] Figure 5 This is a front view of the liquid injection mechanism of this utility model;

[0026] Figure 6 This is a side view of the liquid injection mechanism of this utility model;

[0027] Figure 7 yes Figure 6 Enlarged view of point A in the image;

[0028] Figure 8 This is a schematic diagram of the moving control mechanism of the battery fixture of this utility model; Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] like Figures 1-6 As shown, a small steel-shell battery liquid injection device includes a frame 1, on which two rows of liquid injection mechanisms 2 are arranged at intervals. A transverse track 3 is provided between the two rows of liquid injection mechanisms 2. A loading robot 4 and a unloading robot 5 that can move left and right along the transverse track 3 are provided on the transverse track 3. A battery fixture movement control mechanism 6 is provided below each pair of corresponding liquid injection mechanisms 2. Each battery fixture movement control mechanism 6 can control two battery fixtures 7. Two rows of battery clamps 8 are arranged at intervals on the battery fixtures 7. The two battery fixtures 7 can be loaded and unloaded alternately.

[0033] Preferably, the frame 1 is also equipped with a material tray feeding conveyor line 8, a loading and weighing robot 9, a loading and buffering robot 10, a unloading and weighing robot 11, a loading and unloading robot 12, a material tray handling robot 13, an empty material tray conveyor line 14, and a full material tray conveyor line 15. The material feeding conveyor line 8 is equipped with a loading barcode scanner 16, a loading camera 17, and multiple material tray positioning cylinders 18. When the material tray is conveyed to the position of the loading barcode scanner 16 and the loading camera 17, the loading barcode scanner 16 and the loading camera 17 scan the barcode and take pictures respectively. When the material tray is conveyed to the loading position of the material tray feeding conveyor line 8, the material tray positioning cylinders 18 position the material tray.

[0034] Preferably, the loading and weighing robot 9 picks up two batteries from the loading position of the material tray feeding conveyor line 8 and transports them to the loading and weighing station 19. The loading and weighing station 19 weighs the two batteries before they are injected with electrolyte. The loading and buffering robot 10 picks up the two weighed batteries from the loading and weighing station 19 and transports them to the buffer fixture 20. The buffer fixture 20 is filled with two rows of batteries, seven batteries per row. The loading robot 4 picks up one row of seven batteries from the buffer fixture 20 and transports them to one of the battery fixtures 7. When the battery fixture 7 is filled with two rows of batteries (seven batteries per row, 14 batteries in total), the battery fixture movement control mechanism 6 moves the battery fixture 7 to the injection position. Liquid is injected below the liquid injection mechanism 2. After the battery is injected, the battery fixture movement control mechanism 6 drives the battery fixture 7 to the loading position. The unloading robot 5 takes out the injected battery from the battery fixture 7 and transports the battery to the unloading buffer fixture 101. The unloading weighing robot 11 takes the battery from the unloading buffer fixture 101 and transports the battery to the unloading weighing station 102. The unloading and traying robot 12 takes the battery from the unloading weighing station 102 and transports the battery to the tray on the full tray conveyor line 15. For each tray conveyed by the full tray conveyor line 15, the tray handling robot 13 takes an empty tray from the empty tray conveyor line 14 and places it on the full tray conveyor line 15.

[0035] The injection mechanism 2 includes an injection tank 21 and an upper mounting plate 22. The upper mounting plate 22 is equipped with a lifting control cylinder 23 that can control the lifting and lowering of the injection tank. The upper end of the injection tank 21 is equipped with a lower fixing plate 24. The lower fixing plate 24 is provided with two rows of injection cup control mechanisms 25 and two cap-opening injection mechanisms 26 at intervals. Each cap-opening injection mechanism 26 corresponds to one row of injection cups for liquid preparation. The lower fixing plate 24 is equipped with injection cups corresponding to the positions of each injection cup control mechanism 25. The injection cup holder 27 has a cup cap assembly 28 on one side. An injection cup 29 is inserted through the injection cup holder 27. The outlet of the injection cup 29 can be inserted into the injection box 21. When the opening injection mechanism 26 injects liquid, it can press down to open the cup cap. The injection cup control mechanism 25 can control the lifting and lowering of the injection cup 29. When the opening injection mechanism 26 opens the cup cap, the injection cup control mechanism 25 controls the injection cup 29 to rise, so that the injection needle 210 is inserted into the inlet hole of the injection cup 29.

[0036] Preferably, the cap-opening and liquid-filling mechanism 26 includes a transverse servo module 261, which controls the movement of a sliding seat 262. The sliding seat 262 is provided with a cap-opening cylinder 263. The piston rod end of the cap-opening cylinder 263 is provided with a cap-opening pressure rod 264. The side of the cap-opening cylinder 263 is provided with a liquid-filling needle mounting seat 265, and a liquid-filling needle 210 is provided on the liquid-filling needle mounting seat 265.

[0037] Preferably, the cup lid assembly 28 includes a cup lid seat 281 and a cup lid 282. The middle part of the cup lid 282 is rotatably connected to the cup lid seat 281 by a pivot pin. One end of the cup lid 282 is movably connected to a pressure seat 283 by a pin. Pressure rods 284 are provided on both sides of the pressure seat 283. A spring rod 285 is provided at the bottom of the pressure seat 283. A spring 286 is sleeved on the spring rod 285. The lower end of the pressure rod 284 is connected to the lower fixed plate 24. When the opening pressure rod 264 presses down the pressure rod 284, one end of the cup lid 282 sinks down with the pressure seat 283, and the other end tilts up to open the liquid inlet hole of the liquid filling cup.

[0038] Preferably, the injection cup control mechanism 25 includes a cylinder mounting plate 251, a control cylinder 252 is provided on one side of the cylinder mounting plate 251, a connecting plate 253 is provided at the piston rod end of the control cylinder 252, an injection cup connecting plate 254 is provided on the connecting plate 253, and the injection cup passes through the injection cup connecting plate 254.

[0039] Preferably, the four corners of the upper mounting plate 22 and the lower mounting plate 24 are connected by guide rods 211, and the four corners of the upper mounting plate 22 are also provided with guide sleeves 212, with the guide rods 211 passing through the guide sleeves 212.

[0040] Preferably, the piston rod end of the lifting control cylinder 23 is connected to the middle of the lower mounting plate 24.

[0041] Preferably, the transverse servo module 261 includes a module profile, on which a transmission screw and a servo motor are provided. The output shaft of the servo motor is connected to the transmission screw through a coupling. The transmission screw is connected to a sliding seat through a screw nut. The bottom of the sliding seat is slidably connected to the module profile through a slider and a slide rail.

[0042] The inner side of the transverse track 3 is provided with a rack (not shown in the figure). Both the loading robot 4 and the unloading robot 5 are provided with transverse drive motors 43. The output shaft of the transverse drive motor 43 is provided with a gear (not shown in the figure), and the gear meshes with the rack for transmission.

[0043] Both the loading robot 4 and the unloading robot 5 include a mounting plate 41. A lifting servo module 42 is provided in the middle of the mounting plate 41. A transverse drive motor 43 is provided at both ends of the mounting plate 41. The lifting servo module 42 controls the movement of the lifting plate 44. A finger cylinder mounting plate is provided at the bottom of the lifting plate 44. Multiple finger cylinders 45 are arranged at intervals on the finger cylinder mounting plate.

[0044] Preferably, the battery fixture movement control mechanism 6 includes two parallel tracks 61, and two sets of second transverse servo modules 62 are provided between the two tracks 61. Each second transverse servo module 62 controls the movement of a battery fixture 7, and the battery fixture 7 is connected to the track 61 by a slider.

[0045] The second transverse servo module 62 includes a module crossbeam, on which a servo motor and a transmission screw are mounted. The transmission screw is connected to the output shaft of the servo motor, and a screw nut is mounted on the transmission screw. The screw nut is connected to the battery fixture via a connecting plate.

[0046] Preferably, each bottom edge of the injection tank 21 is provided with an alignment seat 201, and each alignment seat 201 is provided with a guide wheel 202; the guide wheel 202 enables the alignment seat to be better engaged in the alignment slot and has a guiding function.

[0047] The edge of the battery fixture 7 is provided with alignment slots 71 at the positions of the alignment slots. When the liquid filling tank 21 is placed on the battery fixture 7, the alignment slots 201 are inserted into the alignment slots 71.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small steel can battery liquid injection apparatus comprising a rack, characterized in that, The frame is provided with two rows of liquid injection mechanisms arranged at intervals, and a transverse track is provided between the two rows of liquid injection mechanisms. The transverse track is provided with a loading robot and a unloading robot that can move left and right along the transverse track. Below each pair of corresponding liquid injection mechanisms, there is a battery fixture movement control mechanism. Each battery fixture movement control mechanism can control two battery fixtures. The battery fixture is provided with two rows of battery clamps arranged at intervals, and the two battery fixtures can be loaded and unloaded alternately.

2. The small steel-can battery liquid injection apparatus according to claim 1, wherein The frame is also equipped with a material tray feeding conveyor line, a loading and weighing robot, a loading and buffering robot, a unloading and weighing robot, an unloading and palletizing robot, a material tray handling robot, an empty material tray conveyor line, and a full material tray conveyor line. The material feeding conveyor line is equipped with a loading barcode scanner, a loading camera, and multiple material tray positioning cylinders. When the material tray is conveyed to the position of the loading barcode scanner and the loading camera, the loading barcode scanner and the loading camera scan and take pictures respectively. When the material tray is conveyed to the loading position of the material tray feeding conveyor line, the material tray positioning cylinder positions the material tray.

3. The small steel-can battery liquid injection apparatus according to claim 2, wherein The loading and weighing robot picks up batteries from the loading position of the material tray feeding conveyor and transports them to the loading and weighing station. The loading and buffering robot picks up batteries from the loading and weighing station and transports them to the buffer fixture. The loading robot picks up batteries from the buffer fixture and transports them to one of the battery fixtures. When the battery fixture is full of batteries, the battery fixture movement control mechanism moves the battery fixture to below the liquid injection mechanism for liquid injection. After the batteries are injected, the battery fixture movement control mechanism moves the... The battery fixture moves to the loading position, the unloading robot removes the filled batteries from the battery fixture and transports them to the unloading buffer fixture, the unloading weighing robot removes the batteries from the unloading buffer fixture and transports them to the unloading weighing station, the unloading tray loading robot removes the batteries from the unloading weighing station and transports them to the trays on the full tray conveyor line, and for each tray transported by the full tray conveyor line, the tray handling robot removes an empty tray from the empty tray conveyor line and places it on the full tray conveyor line.

4. The small steel-can battery liquid injecting apparatus according to claim 1, wherein Each of the aforementioned injection mechanisms includes an injection tank and an upper mounting plate. The upper mounting plate is equipped with a lifting control cylinder capable of controlling the lifting and lowering of the injection tank. The upper end of the injection tank is equipped with a lower fixing plate. The lower fixing plate is provided with two rows of injection cup control mechanisms and two cap-opening injection mechanisms at intervals. The lower fixing plate is equipped with an injection cup seat corresponding to the position of each injection cup control mechanism. A cup cap assembly is provided on one side of the injection cup seat. An injection cup is inserted through the injection cup seat. The outlet of the injection cup can extend into the injection tank. When the cap-opening injection mechanism injects liquid, it can press down to open the cup cap. The injection cup control mechanism can control the lifting and lowering of the injection cup. When the cap-opening injection mechanism opens the cup cap, the injection cup control mechanism controls the injection cup to rise, so that the injection needle extends into the inlet hole of the injection cup. The upper mounting plate and the lower mounting plate are connected at their four corners by guide rods. The upper mounting plate is also provided with guide sleeves at its four corners. The guide rods pass through the guide sleeves. The piston rod end of the lifting control cylinder is connected to the middle of the lower mounting plate.

5. The small steel-can battery liquid injection apparatus according to claim 4, wherein The cap-opening and liquid-injection mechanism includes a transverse servo module, which controls the movement of a sliding seat. The sliding seat is equipped with a cap-opening cylinder, and the piston rod end of the cap-opening cylinder is equipped with a cap-opening pressure rod. The side of the cap-opening cylinder is equipped with a liquid-injection needle mounting seat, and the liquid-injection needle mounting seat is equipped with a liquid-injection needle. The transverse servo module includes a module profile, on which a transmission screw and a servo motor are provided. The output shaft of the servo motor is connected to the transmission screw through a coupling. The transmission screw is connected to the sliding seat through a screw nut. The bottom of the sliding seat is slidably connected to the module profile through a slider and a slide rail.

6. The small steel-can battery liquid injection apparatus according to claim 5, wherein The cup lid assembly includes a cup lid base and a cup lid. The middle part of the cup lid is rotatably connected to the cup lid base via a pivot pin. One end of the cup lid is movably connected to a pressure base via a pin. Pressure rods are provided on both sides of the pressure base. A spring rod is provided at the bottom of the pressure base, and a spring is sleeved on the spring rod. The lower end of the pressure rod is connected to the lower fixed plate. When the opening pressure rod presses down on the pressure rod, one end of the cup lid sinks down with the pressure base, and the other end tilts upward to open the liquid inlet of the filling cup.

7. The small steel-can battery liquid injection apparatus according to claim 6, wherein The injection cup control mechanism includes a cylinder mounting plate, a control cylinder is provided on one side of the cylinder mounting plate, a connecting plate is provided at the piston rod end of the control cylinder, an injection cup connecting plate is provided on the connecting plate, and the injection cup passes through the injection cup connecting plate.

8. The small steel-can battery liquid injection apparatus according to claim 1, wherein The inner side of the transverse track is provided with a rack, and both the loading robot and the unloading robot are provided with transverse drive motors. The output shaft of the transverse drive motor is provided with a gear, and the gear meshes with the rack for transmission. Both the loading robot and the unloading robot include a mounting plate. A lifting servo module is provided in the middle of the mounting plate. The transverse drive motor is located at both ends of the mounting plate. The lifting servo module controls the movement of the lifting plate. A finger cylinder mounting plate is provided at the bottom of the lifting plate. Multiple finger cylinders are arranged at intervals on the finger cylinder mounting plate.

9. The small steel-can battery liquid injecting apparatus according to claim 1, wherein The battery fixture movement control mechanism includes two parallel tracks, and two sets of second transverse servo modules are provided between the two tracks. Each second transverse servo module controls the movement of one battery fixture, and the battery fixture is connected to the track by a slider. The second transverse servo module includes a module crossbeam, on which a servo motor and a transmission lead screw are mounted. The transmission lead screw is connected to the output shaft of the servo motor, and a lead screw nut is mounted on the transmission lead screw. The lead screw nut is connected to the battery fixture via a connecting plate.

10. The small steel-can battery liquid injecting apparatus according to claim 4, wherein The bottom edge of the injection tank is provided with an alignment seat, and each alignment seat is provided with a guide wheel; The edge of the battery fixture is provided with alignment slots corresponding to the positions of the alignment slots. When the liquid filling tank is placed on the battery fixture, the alignment slots are engaged in the alignment slots.

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