A positive electrode sheet foaming device

Abstract

The utility model provides a positive pole piece bubble piece device, including glove box and liquid injection subassembly, and liquid injection subassembly includes gas source subassembly, liquid storage tank, piston and liquid injection subassembly, the liquid storage tank is arranged in the outside of glove box, is used for storing electrolyte, the piston is connected in the inside of liquid storage tank and slides, liquid injection subassembly is arranged in the inside of glove box, and is connected with the pipeline that penetrates glove box, is connected with liquid storage tank through the pipeline, gas source subassembly is connected with liquid storage tank. The utility model is through piston and is cut off between gas and electrolyte, under the extrusion of the gas that gas source subassembly supplies, push piston moves, extrude and convey electrolyte to the liquid injection subassembly in the inside of glove box through the pipeline, make electrolyte in the environment of insulating and outside air contact, convenient into glove box, and can directly carry out liquid injection operation, need not still carry out repeated extraction action in glove box.

Description

Technical Field

[0001] This utility model relates to the field of button battery manufacturing technology, specifically to a positive electrode sheet blister device. Background Technology

[0002] Before assembly, the small circular electrode pieces are immersed in the electrolyte for a period of time (e.g., a few seconds to a few minutes), allowing the electrolyte to directly and forcibly enter the pores of the electrode material from the outside through capillary action. This ensures that the surface of the active material is covered by the electrolyte before the battery reaction begins. Immersion needs to be carried out in a glove box filled with inert gas. For example, Chinese Patent 202323348079.0 discloses a glove box for electrolyte processing, including an upper box body, a base frame fixedly installed at the bottom of the upper box body, a lower protective box fixedly installed on the base frame, and a gas circulation and purification system for gas treatment fixedly installed inside the lower protective box. The gas circulation and purification system is connected to the internal space of the upper box body through an inlet pipe and an outlet pipe.

[0003] The basic operating procedure in a glove box involves the operator manually drawing electrolyte using an airtight syringe within a glove box filled with high-purity inert gas (such as argon). This electrolyte is then discharged onto the battery casing or electrode plates for pre-wetting and injection. While this structure and operating mode provide sufficient atmospheric protection to prevent the electrolyte from contacting air, the repeated drawing and discharging of electrolyte is inefficient. Furthermore, the limited internal volume of the box prevents the storage of large quantities of electrolyte, necessitating external replenishment, which further reduces overall operating efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a positive electrode plate bubbling device to solve the technical problem of low bubbling operation efficiency caused by repeated extraction and frequent replenishment of electrolyte in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a positive electrode chip device, comprising: glove box; and The electrolyte injection assembly includes a gas source assembly, a liquid storage tank, a piston, and an injection component. The liquid storage tank is located on the outside of the glove box and is used to store electrolyte. The piston is slidably connected to the inside of the liquid storage tank. The injection component is located on the inside of the glove box and is connected to a pipe that passes through the glove box and is connected to the liquid storage tank through the pipe. The gas source assembly is connected to the liquid storage tank and is used to supply compressed gas into the liquid storage tank to push the piston to squeeze the electrolyte and deliver it along the pipe to the injection component.

[0006] In some embodiments, the top of the storage tank is provided with an air inlet and an air inlet valve, the bottom of the storage tank is provided with an outlet and a drain valve, and a chamber for containing electrolyte is formed between the piston and the inner bottom wall of the storage tank.

[0007] In some embodiments, the air source assembly includes a compressed air tank and a pressure regulating valve. The compressed air tank is provided with an air tank valve, and the pressure regulating valve is installed on the top of the glove box. One end of the valve is connected to the air inlet valve through a pipe, and the other end is connected to the air tank valve through a pipe.

[0008] In some embodiments, a mounting base is also included, to which the liquid storage tank is detachably connected.

[0009] In some embodiments, the mounting base is provided with a one-way valve that communicates with the drain valve. The one-way valve is connected to the pipeline and is used to restrict the electrolyte from flowing unidirectionally to the injection assembly.

[0010] In some embodiments, the mounting base is provided with an insertion slot, the inner side of the insertion slot is provided with an annular platform, the bottom of the liquid storage tank is provided with a sleeve, the liquid storage tank is inserted into the inner side of the insertion slot, and the sleeve is threaded to the outer side of the annular platform, and the one-way valve is installed on the inner side of the annular platform.

[0011] In some embodiments, the pipeline is provided with a buffer tank.

[0012] In some embodiments, a solenoid valve is installed between the pressure regulating valve and the gas source assembly, and a control switch is installed on the liquid injection assembly, the control switch being electrically connected to the solenoid valve.

[0013] In some embodiments, the injection assembly includes a switching valve and an injection head, wherein the switching valve is mounted on the injection head and is used to adjust the on / off state and opening degree of the injection head.

[0014] In some embodiments, a bellows is provided between the piston and the inner bottom wall of the storage tank for containing the electrolyte.

[0015] Compared with the prior art, the positive electrode blister device provided by this utility model uses a piston to isolate the gas and electrolyte. Under the compression of the gas supplied by the gas source component, the piston moves and compresses the electrolyte through the pipeline to the liquid injection component located inside the glove box. This allows the electrolyte to enter the glove box conveniently in an environment isolated from the outside air, and the liquid injection operation can be performed directly without the need for repeated extraction within the glove box. Furthermore, the externally arranged liquid storage tank can have a larger capacity, eliminating the need for frequent replacement or replenishment, thus improving the operating efficiency of the positive electrode blister. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the positive electrode bulb device provided in this embodiment of the utility model; Figure 2 This is a front view of the positive electrode chip device provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the liquid storage tank of the positive electrode chip blister device provided in this embodiment of the utility model, which is equipped with a corrugated pipe.

[0017] Explanation of reference numerals in the attached figures: 1. Glove box; 2. Liquid injection assembly; 21. Gas source assembly; 211. Compressed air tank; 212. Pressure regulating valve; 213. Air tank valve; 214. Solenoid valve; 215. Control switch; 22. Liquid storage tank; 22a. Air inlet; 22b. Air inlet valve; 22c. Liquid outlet; 22d. Drain valve; 23. Piston; 24. Liquid injection assembly; 241. Switch valve; 242. Liquid injection head; 25. Piping; 26. Sleeve; 27. Buffer tank; 28. Bellows; 3. Mounting base; 31. Check valve; 32. Cartridge slot; 33. Circular platform. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To address the technical problem of low operating efficiency in positive electrode sheet bubbling due to repeated electrolyte extraction and frequent replenishment, this invention provides a positive electrode sheet bubbling device. This device uses a piston to isolate the gas and electrolyte. Gas supplied by a gas source component compresses the piston, pushing it to deliver the electrolyte through pipelines to an injection component located inside the glove box. This allows the electrolyte to conveniently enter the glove box in an environment isolated from external air, enabling direct injection without repeated extraction within the glove box. Furthermore, the externally located storage tank can have a larger capacity, reducing the need for frequent replacement or replenishment and improving the operating efficiency of the positive electrode sheet bubbling device.

[0020] Please see Figure 1-2This invention provides a positive electrode spooling device, which includes a glove box 1 and a liquid injection assembly 2. The liquid injection assembly 2 includes a gas source assembly 21, a liquid storage tank 22, a piston 23, and a liquid injection component 24. The liquid storage tank 22 is arranged outside the glove box 1 and is used to store electrolyte. The liquid storage tank 22, located outside the glove box 1, has a larger volume, can hold more electrolyte, and is a closed structure, preventing contact with air from the outside. The piston 23 is slidably connected to the inside of the liquid storage tank 22. The piston 23 serves as a driving element for electrolyte delivery and as a barrier between compressed gas and electrolyte, preventing direct contact between the compressed gas and electrolyte. The liquid injection assembly 24 is arranged inside the glove box 1 and connected to a pipe 25 that passes through the glove box 1. The pipe 25 connects to the storage tank 22, thus connecting and communicating the electrolyte supply to the storage tank 22. With the output of the gas source, pressure is created to transport the electrolyte, pushing it to the injection assembly 24 for injection into the blister pack. The gas source assembly 21 is connected to the storage tank 22 and supplies compressed gas to the storage tank 22, pushing the piston 23 to compress the electrolyte along the pipe 25 to the injection assembly 24. While compressed air can be used as the gas source if the piston 23 has good sealing properties, inert gas is preferred for safety.

[0021] In this embodiment, the external storage tank 22 is sealed and stores electrolyte. After connecting the pipeline 25 and the gas source assembly 21, compressed gas is supplied by the gas source assembly 21 into the storage tank 22. Under the pressure of the gas, the piston 23 moves and pushes the electrolyte along the pipeline 25 to the injection assembly 24, where it is injected into the glove box 1 for use in the electrolyte blister packs. During the electrolyte blister pack operation, frequent extraction and re-injection are not required, and with the large-capacity storage tank 22, frequent replenishment is also unnecessary.

[0022] In one embodiment, please refer to Figure 1 and Figure 2 To create a structure that separates the gas and liquid paths and ensures a stable supply of electrolyte, the top of the storage tank 22 is provided with an air inlet 22a, and an air inlet valve 22b is provided on the air inlet 22a. The air inlet 22a is connected to the gas source assembly 21. When the air inlet valve 22b is opened, gas can enter the tank and push the piston 23 downward. The bottom of the storage tank 22 is provided with a liquid outlet 22c, and a liquid outlet valve 22d is provided on the liquid outlet 22c. A chamber for containing electrolyte is formed between the piston 23 and the inner bottom wall of the storage tank 22. When the piston 23 moves downward, the liquid outlet valve 22d is opened, and the electrolyte can enter the pipeline 25 and be transported to the liquid injection assembly 24 along the pipeline 25.

[0023] Furthermore, in order to maintain stable air pressure when the piston 23 is pushed, the air source assembly 21 includes a compressed air tank 211 and a pressure regulating valve 212. The compressed air tank 211 is provided with a tank valve 213. The pressure regulating valve 212 is installed on the top of the glove box 1. One end of the valve is connected to the air inlet valve 22b through a pipe, and the other end is connected to the tank valve 213 through a pipe. The pressure regulating valve 212 can adjust, reduce and stabilize the pressure of the compressed gas, keeping it at a required and constant set value, so as to stabilize the electrolyte delivery.

[0024] Understandably, the compressed air tank 211 contains compressed gas, and the tank valve 213 of the compressed air tank is detachably connected to the pipeline, which extends to the pressure regulating valve 212. The compressed air tank 211 is replaceable.

[0025] Furthermore, due to the configuration of piston 23, the storage tank 22 can be reused after the electrolyte is used. When the electrolyte is the same type, the storage tank 22 can be inverted, the air inlet 22a can be opened, and electrolyte can be injected by pressurization. This will push piston 23 to reset, refill the chamber with electrolyte, and squeeze the gas out from the air inlet 22a. If the compressed gas is inert gas, a gas tank can be connected to the air inlet 22a to properly recover the inert gas, which can further save costs.

[0026] For further details, please refer to Figure 3 To further prevent cross-contact between gas and electrolyte residues under recyclable conditions, a bellows 28 is provided between the piston 23 and the inner bottom wall of the storage tank 22. The bellows 28 is a compressible flexible structure made of corrosion-resistant PFA or PTFE material. The electrolyte is contained within the bellows 28 so that it does not contact the side wall of the tank and is completely enclosed in the space inside the bellows. It does not contact the outer wall of the piston 23 or the compressed gas, which further improves the isolation.

[0027] In one embodiment, a mounting base 3 is also included to facilitate the installation of the liquid storage tank 22, and the liquid storage tank 22 is detachably connected to the mounting base 3.

[0028] Furthermore, to facilitate the discharge of electrolyte from the storage tank 22, the mounting base 3 is equipped with a one-way valve 31 that communicates with the discharge valve 22d. The one-way valve 31 is connected to the pipeline 25 and is used to restrict the one-way flow of electrolyte to the injection assembly 24. After the outlet 22c of the storage tank 22 is connected to the one-way valve 31, the discharge valve 22d is opened, allowing the electrolyte to flow one-way through the pipeline 25 and preventing backflow.

[0029] Understandably, if it is necessary to clean the pipeline 25, an external gas pipeline or cleaning fluid pipeline can be connected to the check valve 31 to inject gas or cleaning fluid to flush the pipeline 25.

[0030] Furthermore, for ease of installation and disassembly, the mounting base 3 is provided with an insertion slot 32 for the liquid storage tank 22 to be inserted and positioned. An annular platform 33 is provided on the inner side of the insertion slot 32, and a sleeve 26 is provided at the bottom of the liquid storage tank 22. The liquid storage tank 22 is inserted into the inner side of the insertion slot 32, and the sleeve 26 is threaded to the outer side of the annular platform 33 for quick connection. A sealing ring is also provided between the sleeve 26 and the annular platform 33. The one-way valve 31 is installed on the inner side of the annular platform 33. After the sleeve 26 and the annular platform 33 are connected, the one-way valve 31 is connected to the outlet 22c and the drain valve 22d.

[0031] Understandably, threaded connection is just one possible connection method. In the connection between the liquid storage tank 22 and the mounting base 3, it is only necessary to keep the liquid outlet 22c connected and sealed with the one-way valve 31. For example, a snap-fit ​​connection can also be used for sealing. These are all existing structures and are not the only ones to be specified here.

[0032] Furthermore, in order to avoid large fluctuations at the injection end when conveying electrolyte, the pipeline 25 is equipped with a buffer tank 27 to buffer the conveyed electrolyte. The inlet and outlet of the buffer tank 27 are located at its top and bottom, respectively, to avoid internal residue.

[0033] In one embodiment, please refer to Figure 1 and Figure 2 To facilitate the control of the start and stop of electrolyte delivery, a solenoid valve 214 is installed between the pressure regulating valve 212 and the gas source assembly 21 to control the gas supply. A control switch 215 is installed on the liquid injection assembly 24. The control switch 215 is electrically connected to the solenoid valve 214, so that the opening and closing of the solenoid valve 214 can be directly controlled from the glove box 1.

[0034] Understandably, after the compressed air tank 211 is connected to the solenoid valve 214, the solenoid valve 214 is in the closed state. At this time, the valve of the compressed air tank 211 can be opened and is in the normally open state. If an air source needs to be supplied, the solenoid valve 214 can be opened. After the air source is regulated by the pressure regulating valve, it enters the liquid storage tank 22.

[0035] Furthermore, in order to control the injection flow rate at the injection end, the injection assembly 24 includes a switching valve 241 and an injection head 242. The switching valve 241 is installed on the injection head 242 and is used to adjust the on / off state and opening degree of the injection head 242. The injection flow rate can be controlled by manually adjusting the opening degree of the switching valve 241. When it is necessary to interrupt the injection for a short time, the switching valve 241 can be closed. If it is necessary to interrupt the injection for a long time, the solenoid valve 214 needs to be closed to prevent the piston 23 from being under pressure for a long time.

[0036] To better understand this utility model, the following is combined with... Figures 1 to 3 The technical solution of this utility model is described in detail as follows: Before use, the storage tank 22 and the compressed air tank 211 are installed, and the air tank valve 213 on the compressed air tank 211 is opened. During use, the worker inserts his hands into the gloves on the glove box 1 and operates the liquid injection component 24 in the glove box 1. The control switch 215 is activated to open the solenoid valve 214. The compressed gas enters the storage tank 22 through the pressure regulating valve 212, and the piston 23 squeezes the electrolyte downward from the outlet 22c through the drain valve 22d, through the one-way valve 31, through the pipeline 25 and the opened switch valve 241, and flows out from the injection head 242, thereby achieving the purpose of injecting electrolyte. If the electrolyte injection is interrupted for a short time, the switch valve 241 is closed. If the electrolyte injection is interrupted for a long time, the solenoid valve 214 is closed.

[0037] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A positive electrode chip spooling device, characterized in that, include: Glove box; as well as The electrolyte injection assembly includes a gas source assembly, a liquid storage tank, a piston, and an injection component. The liquid storage tank is located on the outside of the glove box and is used to store electrolyte. The piston is slidably connected to the inside of the liquid storage tank. The injection component is located on the inside of the glove box and is connected to a pipe that passes through the glove box and is connected to the liquid storage tank through the pipe. The gas source assembly is connected to the liquid storage tank and is used to supply compressed gas into the liquid storage tank to push the piston to squeeze the electrolyte and deliver it along the pipe to the injection component.

2. The positive electrode bulb device according to claim 1, characterized in that, The top of the storage tank is provided with an air inlet and an air inlet valve. The bottom of the storage tank is provided with a liquid outlet and a liquid outlet valve. The piston and the inner bottom wall of the storage tank form a chamber for containing electrolyte.

3. The positive electrode bulb device according to claim 2, characterized in that, The air source assembly includes a compressed air tank and a pressure regulating valve. The compressed air tank is equipped with an air tank valve, and the pressure regulating valve is installed on the top of the glove box. One end of the valve is connected to the air inlet valve through a pipe, and the other end is connected to the air tank valve through a pipe.

4. The positive electrode bulb device according to claim 2, characterized in that, It also includes a mounting base, to which the liquid storage tank is detachably connected.

5. The positive electrode chip device according to claim 4, characterized in that, The mounting base is equipped with a one-way valve that communicates with the drain valve. The one-way valve is connected to the pipeline and is used to restrict the electrolyte from flowing unidirectionally to the injection assembly.

6. The positive electrode bulb device according to claim 5, characterized in that, The mounting base is provided with an insertion slot, and an annular platform is provided on the inner side of the insertion slot. A sleeve is provided at the bottom of the liquid storage tank. The liquid storage tank is inserted into the inner side of the insertion slot, and the sleeve is threaded to the outer side of the annular platform. The one-way valve is installed on the inner side of the annular platform.

7. The positive electrode bulb device according to claim 1, characterized in that, The pipeline is equipped with a buffer tank.

8. The positive electrode bulb device according to claim 3, characterized in that, A solenoid valve is installed between the pressure regulating valve and the gas source assembly, and a control switch is installed on the liquid injection assembly. The control switch is electrically connected to the solenoid valve.

9. The positive electrode bulb device according to claim 1, characterized in that, The injection assembly includes a switching valve and an injection head. The switching valve is installed on the injection head and is used to adjust the on / off state and opening degree of the injection head.

10. The positive electrode bulb device according to claim 1, characterized in that, A corrugated tube is provided between the piston and the inner bottom wall of the storage tank for containing the electrolyte.

Images