Small-batch rapid experiment liquid injection machine

Abstract

The utility model discloses a small-batch rapid experiment liquid injection machine which comprises a container and an installation support, the container comprises a stainless steel containing cavity body, a cover plate is detachably installed on the stainless steel containing cavity body, a pressure adjusting assembly used for adjusting air pressure in the stainless steel containing cavity body is arranged on the cover plate, and the installation support comprises a battery positioning bottom plate. The battery positioning bottom plate is provided with a hole position which is similar to a battery in shape, a plurality of pull rods are fixedly installed on the top of the battery positioning bottom plate, the pull rods are sleeved with movable pressing plates with pressing holes in a sliding mode, and locking nuts used for pressing the movable pressing plates with the pressing holes to the top of the battery are rotationally installed on the pull rods in a threaded mode. Electrolyte cup bodies corresponding to the batteries one by one are fixedly installed on the movable pressing plate with the holes, the bottoms of the electrolyte cup bodies are communicated with bosses with the holes, the lower ends of the bosses with the holes can be communicated with liquid injection holes in the tops of the batteries, and the whole device is simple in structure, light, low in production cost and easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery liquid injection technology, and in particular to a small-batch rapid experimental liquid injection machine. Background Technology

[0002] In the lithium battery production process, the electrolyte filling stage is crucial. Given the stringent cleanliness requirements of lithium batteries, and the tendency of the electrolyte to crystallize and potentially block channels, traditional electrolyte filling equipment is often complex in design, resulting in high costs, long production cycles, and significant operational difficulties. These factors pose considerable inconvenience for small-batch production in a laboratory environment.

[0003] Therefore, a small-batch, rapid experimental liquid injection machine is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a small-batch, rapid experimental liquid injection machine, thereby solving or at least alleviating one or more of the aforementioned problems and other issues existing in the prior art.

[0005] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0006] A small-batch rapid experimental liquid injection machine, comprising:

[0007] A container, the container including a stainless steel cavity, a cover plate detachably installed on the stainless steel cavity, and a pressure regulating component for adjusting the air pressure inside the stainless steel cavity provided on the cover plate;

[0008] The mounting bracket includes a battery positioning base plate with holes similar in shape to the battery. Several pull rods are fixedly mounted on the top of the battery positioning base plate. A movable pressure plate with a pressure band hole is slidably sleeved on the pull rod. A locking nut for pressing the movable pressure plate with the pressure band hole to the top of the battery is threadedly mounted on the pull rod. An electrolyte cup body corresponding to each battery is fixedly mounted on the movable pressure plate with the pressure band hole. The bottom of the electrolyte cup body is connected to a perforated boss. The lower end of the perforated boss can communicate with the electrolyte injection hole on the top of the battery.

[0009] When adding electrolyte into the battery, the mounting bracket on which the battery is mounted is placed inside the stainless steel cavity. By controlling the air pressure inside the stainless steel cavity, the electrolyte in the electrolyte cup is added into the battery.

[0010] According to this utility model, a small-batch rapid experimental liquid injection machine includes a pressure regulating component comprising a three-way valve. The three-way valve is fixedly installed on the cover plate, and its lower end is connected to the interior of the stainless steel cavity. A first solenoid valve is installed at one of the upper ports of the three-way valve, and a second solenoid valve is installed at the other upper port. A vacuum connecting pipe is connected to the connecting port of the first solenoid valve, and the end of the vacuum connecting pipe away from the first solenoid valve is connected to the air inlet of a vacuum pump. A nitrogen connecting pipe is connected to the connecting port of the second solenoid valve, and the end of the nitrogen connecting pipe away from the second solenoid valve is connected to the air outlet of a nitrogen tank.

[0011] In a small-batch rapid experimental liquid injection machine according to the present invention, the upper outer wall of the stainless steel cavity is rotatably connected with a locking ring for fixing the cover plate to the top of the stainless steel cavity.

[0012] In a small-batch rapid experimental liquid injection machine according to the present invention, an annular groove is provided on the top of the stainless steel cavity, and a sealing ring is installed in the annular groove.

[0013] In a small-batch rapid experimental liquid injection machine according to the present invention, a flexible injection nozzle is fixedly sleeved on the bottom of the perforated boss.

[0014] In a small-batch rapid experimental liquid injection machine according to the present invention, a pressure gauge for monitoring the air pressure inside the stainless steel cavity is fixedly installed on the cover plate.

[0015] In a small-batch rapid experimental liquid injection machine according to the present invention, a safety valve is installed on the cover plate, and the lower end of the safety valve is connected to the interior of the stainless steel cavity.

[0016] In a small-batch rapid experimental liquid injection machine according to the present invention, a lifting lug is fixedly connected to the top of the pull rod.

[0017] In a small-batch rapid experimental liquid injection machine according to the present invention, a silencer valve is fixedly installed on the cover plate, and the lower end of the silencer valve is connected to the interior of the stainless steel cavity.

[0018] In a small-batch rapid experimental liquid injection machine according to the present invention, the cover plate is a transparent acrylic plate.

[0019] This utility model has at least the following beneficial effects:

[0020] 1. By using a pressure regulating component, the electrolyte is added to the battery through alternating vacuuming and nitrogen filling, thereby improving the filling efficiency.

[0021] 2. By adjusting the height of the movable pressure plate of the pressure band hole and replacing it with a battery positioning base plate that has a similar shape to the battery, it can meet the needs of batteries of different sizes;

[0022] 3. The entire equipment has a simple and lightweight structure, low production cost, is easy to operate, and can be moved as needed, making it highly flexible. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the container in this utility model;

[0025] Figure 2 This is a schematic diagram of the mounting bracket in this utility model;

[0026] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0027] Explanation of icon numbers:

[0028] 1. Container; 3. Stainless steel cavity; 4. Cover plate; 5. Pressure gauge; 6. First solenoid valve; 7. Vacuum connection pipe; 8. T-junction; 9. Second solenoid valve; 10. Safety valve; 11. Nitrogen connection pipe; 12. Silencer valve; 13. Locking pull ring; 22. Sealing ring;

[0029] 2. Mounting bracket; 14. Electrolyte cup body; 1401. Boss with hole; 15. Lifting lug; 16. Locking nut; 17. Pressing plate with hole; 18. Pull rod; 19. Flexible injection nozzle; 21. Battery positioning base plate;

[0030] 20. Battery; 2001. Fluid injection port. Detailed Implementation

[0031] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0032] Please refer to Figures 1 to 3As shown, this embodiment provides a small-batch rapid experimental liquid injection machine, including a container 1 and a mounting bracket 2. The container 1 includes a stainless steel cavity 3, on which a cover plate 4 is detachably installed. A pressure gauge 5 for monitoring the internal air pressure of the stainless steel cavity 3 is fixedly installed on the cover plate 4. A pressure regulating component for adjusting the internal air pressure of the stainless steel cavity 3 is provided on the cover plate 4. The mounting bracket 2 includes a battery positioning base plate 21, on which holes similar in shape to those of a battery 20 are opened. Several pull rods 18 are fixedly installed on the top of the battery positioning base plate 21. A movable pressure plate 17 with a pressure band hole is slidably sleeved on the pull rod 18. A threaded device for pressing the movable pressure plate 17 with the pressure band hole is rotatably installed on the pull rod 18 to press the movable pressure plate 17 onto the battery 20. The top locking nut 16 and the movable pressure plate 17 with the pressure hole are fixedly installed with electrolyte cups 14 corresponding to the batteries 20. The bottom of the electrolyte cup 14 is connected to a perforated boss 1401. The lower end of the perforated boss 1401 can be connected to the injection hole 2001 on the top of the battery 20. In order to improve the sealing between the perforated boss 1401 and the injection hole 2001, a flexible injection nozzle 19 is fixedly sleeved on the bottom of the perforated boss 1401. When adding electrolyte into the battery 20, the mounting bracket 2 with the battery 20 is placed inside the stainless steel cavity 3. By controlling the air pressure inside the stainless steel cavity 3, the electrolyte in the electrolyte cup 14 is added into the battery 20.

[0033] In this embodiment, the pressure regulating component includes a three-way valve 8, which is fixedly installed on the cover plate 4. The lower end of the three-way valve 8 is connected to the interior of the stainless steel cavity 3. A first solenoid valve 6 is installed at one of the upper ports of the three-way valve 8, and a second solenoid valve 9 is installed at the other upper port of the three-way valve 8. A vacuum connecting pipe 7 is connected to the connecting port of the first solenoid valve 6. The end of the vacuum connecting pipe 7 away from the first solenoid valve 6 is connected to the air inlet of the vacuum pump. A nitrogen connecting pipe 11 is connected to the connecting port of the second solenoid valve 9. The end of the nitrogen connecting pipe 11 away from the second solenoid valve 9 is connected to the air outlet of the nitrogen tank.

[0034] By adopting the above technical solution, during use, the battery 20 is placed in the hole of the battery positioning base plate 21, and then the locking nut 16 is tightened to press the movable pressure plate 17 of the pressure band hole onto the top of the battery 20. At this time, the flexible injection nozzle 19 is sealed and inserted into the injection hole 2001. Then, the mounting bracket 2 is placed inside the stainless steel cavity 3, and then a certain amount of electrolyte is added into the electrolyte cup 14. Then, the cover plate 4 is placed on the stainless steel cavity 3 to make the inside of the stainless steel cavity 3 sealed. Then, the first solenoid valve 6 is opened, and the second solenoid valve 9 is closed. In this state, the inside of the stainless steel cavity 3 is evacuated to a negative pressure state. As the negative pressure inside the stainless steel cavity 3 gradually increases, the air inside the battery 20 is also evacuated. Then, the first solenoid valve 6 is closed and the second solenoid valve 9 is opened, and nitrogen is injected into the inside of the stainless steel cavity 3. At this time, the air pressure inside the battery 20 is lower than the air pressure inside the stainless steel cavity 3, so that the electrolyte in the electrolyte cup 14 is forced into the battery 20. Through the above-mentioned alternating operation of evacuation and nitrogen filling, the electrolyte in the electrolyte cup 14 can be stably and quickly added into the battery 20.

[0035] In this embodiment, the opening and closing of the first solenoid valve 6 and the second solenoid valve 9 are both controlled by a time relay.

[0036] In this embodiment, in order to facilitate the disassembly and assembly of the cover plate 4, a locking ring 13 for fixing the cover plate 4 to the top of the stainless steel cavity 3 is rotatably connected to the upper outer wall of the stainless steel cavity 3.

[0037] In this embodiment, in order to improve the sealing performance of the stainless steel cavity 3, an annular groove is provided on the top of the stainless steel cavity 3, and a sealing ring 22 is installed in the annular groove.

[0038] In this embodiment, in order to ensure safety during electrolyte filling, a safety valve 10 is installed on the cover plate 4. The lower end of the safety valve 10 is connected to the interior of the stainless steel cavity 3. A silencer valve 12 is fixedly installed on the cover plate 4. The lower end of the silencer valve 12 is connected to the interior of the stainless steel cavity 3.

[0039] In this embodiment, a lifting lug 15 is fixedly connected to the top of the pull rod 18 to facilitate lifting and carrying the mounting bracket 2.

[0040] In this embodiment, the cover plate 4 is a transparent acrylic plate to facilitate observation of the internal state of the stainless steel cavity 3.

[0041] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A small-batch rapid experimental liquid injection machine, characterized in that... include: The container (1) includes a stainless steel cavity (3), a cover plate (4) is detachably installed on the stainless steel cavity (3), and a pressure regulating component for adjusting the internal air pressure of the stainless steel cavity (3) is provided on the cover plate (4). Mounting bracket (2), the mounting bracket (2) includes a battery positioning base plate (21), the battery positioning base plate (21) is provided with holes similar in shape to the battery (20), the top of the battery positioning base plate (21) is provided with several pull rods (18), the pull rods (18) are slidably fitted with a pressing hole movable pressure plate (17), the pull rods (18) are threadedly mounted with a locking nut (16) for pressing the pressing hole movable pressure plate (17) to the top of the battery (20), the pressing hole movable pressure plate (17) is provided with an electrolyte cup (14) corresponding to the battery (20), the bottom of the electrolyte cup (14) is connected to a perforated boss (1401), the lower end of the perforated boss (1401) is connected to the injection hole (2001) at the top of the battery (20).

2. The small-batch rapid experimental liquid injection machine according to claim 1, characterized in that: The pressure regulating assembly includes a three-way valve (8), which is mounted on the cover plate (4). The lower end of the three-way valve (8) is connected to the interior of the stainless steel cavity (3). The upper end of the three-way valve (8) is connected to a first solenoid valve (6) and a second solenoid valve (9). The connection port of the first solenoid valve (6) is connected to a vacuum connection pipe (7), and the connection port of the second solenoid valve (9) is connected to a nitrogen connection pipe (11).

3. The small-batch rapid experimental liquid injection machine according to claim 2, characterized in that: The upper outer wall of the stainless steel cavity (3) is rotatably connected to a locking ring (13) for fixing the cover plate (4) to the top of the stainless steel cavity (3).

4. The small-batch rapid experimental liquid injection machine according to claim 3, characterized in that: The top of the stainless steel cavity (3) is provided with an annular groove, and a sealing ring (22) is provided in the annular groove.

5. The small-batch rapid experimental liquid injection machine according to claim 1, characterized in that: The bottom of the perforated boss (1401) is fitted with a flexible injection nozzle (19).

6. The small-batch rapid experimental liquid injection machine according to claim 4, characterized in that: The cover plate (4) is equipped with a pressure gauge (5) for monitoring the air pressure inside the stainless steel cavity (3).

7. The small-batch rapid experimental liquid injection machine according to claim 6, characterized in that: The cover plate (4) is provided with a safety valve (10), and the lower end of the safety valve (10) is connected to the interior of the stainless steel cavity (3).

8. The small-batch rapid experimental liquid injection machine according to claim 1, characterized in that: The locking nut (16) is provided with a lifting lug (15) at the top.

9. A small-batch rapid experimental liquid injection machine according to claim 7, characterized in that: The cover plate (4) is provided with a silencer valve (12), and the lower end of the silencer valve (12) is connected to the interior of the stainless steel cavity (3).

10. A small-batch rapid experimental liquid injection machine according to claim 1, characterized in that: The cover plate (4) is a transparent acrylic plate.

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