Battery formation negative pressure cup assembly with air guide pipe

Abstract

The utility model provides a battery formation negative pressure cup assembly with an air guide pipe, which comprises a negative pressure cup body, an extraction opening is arranged at the top of the negative pressure cup body, and an air inlet pipe is arranged at the bottom of the negative pressure cup body, and is characterized in that a fixed block is arranged at the bottom of the air inlet pipe; a center hole matched with the air inlet pipe is formed in the center of the fixed block, the top of the air guide pipe is inserted into the center hole and extends into the air inlet pipe, the top of the air guide pipe is closed, the bottom of the air guide pipe is open, side holes are evenly formed in the side wall of the top of the air guide pipe, and a movable block is installed on the side wall of the bottom of the air guide pipe. And a spring sleeves an area, between the movable block and the fixed block, of the air guide pipe. The battery formation negative pressure cup assembly with the gas guide pipe is simple in structure, ingenious in design and convenient to operate, keeps a normally closed state when not in contact with a battery liquid injection port, and can realize independent control on a negative pressure cup gas circuit during battery formation under the condition that electric control is not used.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to a battery formation negative pressure cup assembly with a gas guide tube. Background Technology

[0002] High-energy-density batteries generate a large amount of gas during the battery formation process. If this gas is not discharged in time, it can easily cause the battery casing to expand, affecting the battery's appearance and performance. To expel gas during the formation process, a negative pressure module is used to suction gas from the battery's electrolyte inlet. In existing technologies, a negative pressure cup is generally connected to the battery's electrolyte inlet during the formation process. The structure of the existing negative pressure cup is as follows: Figure 1 As shown, the device includes a negative pressure cup body 1, with an air extraction port 2 at the top and a suction nozzle 2 at the bottom. In actual operation, the air extraction port 2 is connected to a manifold via a pipe, the manifold is connected to a vacuum pump, and the suction nozzle 2 is connected to the battery's electrolyte filling port. When the vacuum pump is activated, the negative pressure cup body 1 generates a vacuum, drawing gas from the battery through the electrolyte filling port. However, in practice, one manifold needs to connect to dozens of negative pressure cup bodies 1. The existing negative pressure cup bodies 1 cannot be individually controlled. If a negative pressure cup body 1 at a certain station cannot contact the battery's electrolyte filling port, the manifold will leak during vacuuming. This would require a control valve for each negative pressure cup body 1, but adding control valves would significantly increase equipment and operating costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention proposes a battery formation negative pressure cup assembly with a gas guide tube, which remains normally closed when not in contact with the battery filling port, enabling independent control of the negative pressure cup gas path during battery formation without the use of electronic control.

[0004] To achieve the above technical solution, this utility model provides a battery formation negative pressure cup assembly with a vent pipe, comprising: a negative pressure cup body, an air extraction port at the top of the negative pressure cup body, an air inlet pipe at the bottom of the negative pressure cup body, a fixing block installed at the bottom of the air inlet pipe, a central hole matching the air inlet pipe at the center of the fixing block, the top of the vent pipe being inserted into the central hole and extending into the air inlet pipe, the top of the vent pipe being closed and the bottom of the vent pipe being open, side holes being evenly distributed on the side wall of the top of the vent pipe, a movable block being installed on the side wall of the bottom of the vent pipe, and a spring being sleeved on the area of ​​the vent pipe located between the movable block and the fixing block.

[0005] In the above technical solution, during actual operation, the air guide tube and the movable block, under their own weight and the elastic force of the spring, cause the top of the air guide tube to descend into the air inlet tube. The inner wall of the air inlet tube seals the evenly spaced side holes on the top side wall of the air guide tube. At this time, even when the suction port at the top of the negative pressure cup body is evacuated, the negative pressure cup body is in a closed state. When the battery tray rises, the bottom of the air guide tube contacts the liquid injection port of the battery in the battery tray, and the battery pushes the air guide tube to rise, causing the top of the air guide tube to rise from the air inlet tube and extend into the negative pressure cup body. At this time, the evenly spaced side holes on the top side wall of the air guide tube are in an open state. At this time, when the suction port at the top of the negative pressure cup body is evacuated, the negative pressure cup body is in an open state, and the battery liquid injection port can be evacuated through the negative pressure cup. Thus, the air path of the negative pressure cup can be individually controlled during battery formation without the use of electronic control. Once the battery formation is complete, the vacuum is shut off, the battery descends, and the spring force causes the air duct to reset. The top of the air duct then descends back into the air intake pipe, and the inner wall of the air intake pipe re-seals the evenly spaced side holes on the top side wall of the air duct.

[0006] Preferably, a sealing ring is fixedly installed inside the air intake pipe. By setting the sealing ring, the air tightness between the air intake pipe and the air guide pipe can be further improved, so that when the top of the air guide pipe descends into the air intake pipe, a vacuum cannot be drawn.

[0007] Preferably, a suction nozzle is installed at the bottom of the air duct to facilitate connection between the bottom of the air duct and the battery's liquid filling port.

[0008] The beneficial effects of the battery formation negative pressure cup assembly with venting tube provided by this utility model are as follows: This battery formation negative pressure cup assembly with venting tube has a simple structure, ingenious design, and convenient operation. It remains in a normally closed state when not in contact with the battery filling port, and can achieve independent control of the negative pressure cup gas path during battery formation without the use of electronic control. In actual operation, under the action of its own gravity and the elastic force of the spring, the top of the venting tube descends into the air inlet pipe, and the side holes evenly opened on the top side wall of the venting tube are sealed by the inner wall of the air inlet pipe. At this time, even if the air extraction port at the top of the negative pressure cup body is evacuated, the negative pressure cup body is in a closed state. When the battery tray rises, the bottom of the vent tube contacts the electrolyte inlet of the battery inside the tray. Driven by the battery, the vent tube rises, extending its top from the inlet tube into the negative pressure cup. At this time, the evenly spaced side holes on the top sidewall of the vent tube are open. Simultaneously, when the vacuum port at the top of the negative pressure cup is evacuated, the negative pressure cup itself is open, allowing for vacuuming of the battery's electrolyte inlet. This enables independent control of the negative pressure cup's gas path during battery formation without the use of electronic controls. After battery formation is complete, the vacuum is closed, the battery descends, and the spring force causes the vent tube to reset, its top returning to the inlet tube. The inner wall of the inlet tube then re-closes the evenly spaced side holes on the top sidewall of the vent tube, keeping the negative pressure cup in a normally closed state. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of a negative pressure cup in the prior art.

[0010] Figure 2 This is a schematic diagram of the structure of the present invention when the air guide tube is not mounted on top.

[0011] Figure 3 This is a schematic diagram of the structure of the air guide tube after it is mounted on top in this utility model.

[0012] Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0013] Figure 5 This is a schematic diagram of the structure of the negative pressure cup after it comes into contact with the battery in this utility model.

[0014] In the diagram: 1. Negative pressure cup body; 2. Air extraction port; 3. Suction nozzle; 4. Air inlet pipe; 5. Fixing block; 6. Sealing ring; 7. Air guide pipe; 8. Side hole; 9. Movable block; 10. Spring; 11. Battery. Detailed Implementation

[0015] 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. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Example: A battery formation negative pressure cup assembly with a gas duct.

[0017] Reference Figures 1 to 5 As shown, a battery formation negative pressure cup assembly with a venting pipe includes: a negative pressure cup body 1, a suction port 2 at the top of the negative pressure cup body 1, the suction port 2 being connected to a manifold via a pipe, the manifold being connected to a vacuum device, an air inlet pipe 4 at the bottom of the negative pressure cup body 1, a fixing block 5 at the bottom of the air inlet pipe 4, a central hole matching the air inlet pipe 4 at the center of the fixing block 5, a venting pipe 7 having its top inserted into the central hole and extending into the air inlet pipe 4, the top of the venting pipe 7 being closed and the bottom of the venting pipe 7 being open, and side holes 8 being evenly distributed on the side wall of the top of the venting pipe 7. This structural design allows the venting pipe 7 to be in a closed state when the side holes 8 evenly distributed on the side wall of the top of the venting pipe 7 are located inside the air inlet pipe 4, at which time the negative pressure cup body 1 is in a closed state. Only when the venting pipe 7 is pushed upward into the negative pressure cup body 1, causing the side holes 8 to open, can the negative pressure cup body 1 be in an open state. A sealing ring 6 is fixedly installed inside the air inlet pipe 4. The sealing ring 6 further improves the airtightness between the air inlet pipe 4 and the air guide pipe 7, making the seal even tighter when the top of the air guide pipe 7 descends into the air inlet pipe 4, preventing vacuuming. A movable block 9 is installed on the bottom side wall of the air guide pipe 7, and a spring 10 is sleeved on the area between the movable block 9 and the fixed block 5 on the air guide pipe 7. In actual operation, after the battery 11 is formed, the vacuum is closed, the battery 11 descends, and under the elastic force of the spring 10, the movable block 9 moves down, causing the air guide pipe 7 to reset. The top of the air guide pipe 7 descends back into the air inlet pipe 4, and the side holes 8 evenly spaced on the top side wall of the air guide pipe 7 are resealed by the inner wall of the air inlet pipe 4 and the sealing ring 6. A suction nozzle 3 is installed at the bottom of the air guide pipe 7 to facilitate connection between the bottom of the air guide pipe 7 and the liquid filling port of the battery 11.

[0018] This battery formation negative pressure cup assembly with a venting tube has a simple structure, ingenious design, and convenient operation. It remains normally closed when not in contact with the battery filling port, enabling independent control of the negative pressure cup's gas path during battery formation without the need for electronic control. In actual operation, the venting tube 7 and the movable block 9, under their own weight and the elastic force of the spring 10, cause the top of the venting tube 7 to descend into the air inlet pipe 4. The inner wall of the air inlet pipe 4 and the sealing ring 6 seal the evenly spaced side holes 8 on the top side wall of the venting tube 7. At this time, even when the air extraction port 2 at the top of the negative pressure cup body 1 is evacuated, the negative pressure cup body 1 remains closed. When the battery tray rises, the bottom nozzle 3 of the air guide tube 7 contacts the liquid injection port of the battery 11 inside the battery tray. Driven by the battery 11, the air guide tube 7 rises, causing its top to extend from the air inlet tube 4 into the negative pressure cup body 1. At this time, the side holes 8 evenly spaced on the top side wall of the air guide tube 7 are open. When the vacuum port 2 at the top of the negative pressure cup body 1 is evacuated, the negative pressure cup body 1 is open, allowing for vacuuming of the liquid injection port of the battery 11. This enables independent control of the negative pressure cup's air path during battery formation without the use of electronic control. After the battery 11 has formed, the vacuum is closed, and the battery 11 descends. Under the elastic force of the spring 10, the air guide tube 7 resets, and its top descends back into the air inlet tube 4. The inner wall of the air inlet tube 4 and the sealing ring 6 re-close the evenly spaced side holes 8 on the top side wall of the air guide tube 7, keeping the negative pressure cup body 1 in a normally closed state.

[0019] The above description is only a preferred embodiment of the present utility model. However, the present utility model should not be limited to the content disclosed in the embodiment and the accompanying drawings. Therefore, any equivalent or modified embodiments made without departing from the spirit disclosed in the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A battery formation negative pressure cup assembly with a venting tube, comprising: A negative pressure cup body, wherein the top of the negative pressure cup body is provided with an air extraction port and the bottom of the negative pressure cup body is provided with an air inlet pipe, characterized in that: a fixing block is installed at the bottom of the air inlet pipe, the center of the fixing block is provided with a central hole matching the air inlet pipe, the top of the air guide pipe is inserted into the central hole and extends into the air inlet pipe, the top of the air guide pipe is closed and the bottom of the air guide pipe is open, side holes are evenly opened on the side wall of the top of the air guide pipe, a movable block is installed on the side wall of the bottom of the air guide pipe, and a spring is sleeved on the area of ​​the air guide pipe between the movable block and the fixing block.

2. The battery formation negative pressure cup assembly with a venting tube as described in claim 1, characterized in that: A sealing ring is fixedly installed inside the air intake pipe.

3. The battery formation negative pressure cup assembly with a venting tube as described in claim 1, characterized in that: A suction nozzle is installed at the bottom of the air duct.

Images