CN219626869U - Helium injection device, helium injection nailing device and battery production equipment - Google Patents
Helium injection device, helium injection nailing device and battery production equipment Download PDFInfo
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- CN219626869U CN219626869U CN202320308325.0U CN202320308325U CN219626869U CN 219626869 U CN219626869 U CN 219626869U CN 202320308325 U CN202320308325 U CN 202320308325U CN 219626869 U CN219626869 U CN 219626869U
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- helium
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- connecting nozzle
- liquid separator
- electrolyte
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a helium injection device, a helium injection nailing device and battery production equipment, and relates to the field of batteries, wherein the helium injection device comprises a mounting frame, a connecting nozzle arranged on the mounting frame, a vacuumizing and air supplying assembly communicated with the connecting nozzle, and a gas-liquid separator arranged between the vacuumizing and air supplying assembly and the connecting nozzle; the gas-liquid separator is communicated with the vacuumizing and air supplying assembly and the connecting nozzle, the connecting nozzle is used for being connected with the liquid injection hole of the lithium battery, and the gas-liquid separator can collect electrolyte inside the lithium battery through the connecting nozzle. The utility model can effectively avoid the dropping of the electrolyte of the lithium battery in the process of evacuating and helium injecting, lightens the corrosion of the electrolyte to the conveyer belt and prolongs the service life of the conveyer belt.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a helium injection device, a helium injection nailing device and battery production equipment.
Background
In the secondary injection process of the lithium battery in the prior art, electrolyte drops to the battery injection hole and nearby equipment in the process of evacuating and helium injecting of the lithium battery, and the electrolyte drops more, so that the electrolyte can be brought into the nailing device when the nailing device pre-presses nails, and the problem of frequent clamping is caused after the electrolyte is crystallized. Because electrolyte drops are more, corrosion can be caused to a transport tool after long-time accumulation, the electrolyte in the liquid injection hole cannot be completely cleaned at the cleaning station, the misjudgment rate of 3D laser detection and the Cheng Guzhang rate of the liquid injection hole are increased, the service life of the transport belt is prolonged, the frequency of taking out defective products from the defective product material belt is increased, the labor cost and the material consumption cost are increased, and the production efficiency of the secondary liquid injection equipment is also reduced.
Disclosure of Invention
The utility model aims to provide a helium injection device which can effectively avoid the dripping of electrolyte of a lithium battery in the process of evacuating and helium injection, reduce the corrosion of the electrolyte to a conveyer belt and prolong the service life of the conveyer belt.
Another object of the present utility model is to provide a helium-injecting nailing device which can solve the problem of the nail sticking after the crystallization of the electrolyte.
Another object of the present utility model is to provide a battery production device, which can improve the cleanliness of a cleaning station, reduce the misjudgment rate of a 3D laser detection device, and facilitate to improve the production efficiency of a battery.
Embodiments of the present utility model are implemented as follows:
in a first aspect, the present disclosure provides a helium filling device comprising a mounting frame, a connecting nozzle arranged on the mounting frame, a vacuumizing and air supplying assembly communicated with the connecting nozzle, and a gas-liquid separator arranged between the vacuumizing and air supplying assembly and the connecting nozzle; the gas-liquid separator is communicated with the vacuumizing and air supplying assembly and the connecting nozzle, the connecting nozzle is used for being connected with the liquid injection hole of the lithium battery, and the gas-liquid separator can collect electrolyte inside the lithium battery through the connecting nozzle.
As one embodiment, the vacuum pumping and air supplying assembly comprises a three-way control valve, a vacuum pump and a helium gas supply device; three ports of the three-way control valve are respectively communicated with the gas-liquid separator, the vacuum pump and the helium gas supply device; the three-way control valve is provided with a pressure detection device.
As an embodiment, the pressure detecting device is an air pressure flowmeter.
As an implementation manner, the gas-liquid separator is fixedly arranged on the mounting frame; the gas-liquid separator is communicated with the connecting nozzle through a first pipeline, and the gas-liquid separator is communicated with the vacuumizing and air supplying assembly through a second pipeline.
As an implementation mode, the mounting frame is connected with a lifting assembly for driving the mounting frame to lift; the lifting component comprises a fixing frame and a telescopic rod which is arranged on the fixing frame and used for driving the fixing frame to lift.
As an embodiment, the telescopic rod is a telescopic cylinder.
As an implementation mode, the gas-liquid separator is provided with a liquid outlet, and the liquid outlet is communicated with the electrolyte recovery tank through a pipeline.
As an implementation mode, the connecting nozzle is provided with a sealing element, and after the connecting nozzle is communicated with the liquid injection hole of the lithium battery, the sealing element can seal the liquid injection hole.
In a second aspect, the present disclosure provides a helium-injecting nailing device, including the helium-injecting device described above, and a nailing device, after helium injection into a liquid injection hole of a lithium battery is completed by the helium-injecting device, the nailing device can drive a sealing nail into the liquid injection hole of the lithium battery.
In a third aspect, the present disclosure provides a battery production apparatus including the helium-injecting nailing device described above, and a conveyor belt disposed below the helium-injecting nailing device for conveying lithium batteries.
The present disclosure provides a helium filling device, comprising a mounting frame, a connecting nozzle arranged on the mounting frame, a vacuumizing and air supplying component communicated with the connecting nozzle, and a gas-liquid separator arranged between the vacuumizing and air supplying component and the connecting nozzle; through set up the gas-liquid separator between evacuation and air feed subassembly and connecting nozzle, can separate the electrolyte when connecting nozzle and lithium cell annotate liquid hole intercommunication extraction air for the electrolyte gets into the gas-liquid separator completely under the negative pressure effect, thereby guarantees to have the electrolyte to remain in the connecting nozzle, consequently, compare in the prior art, the notes helium device that this disclosure provided can effectively avoid the whereabouts of lithium cell electrolyte, alleviates the corruption that the electrolyte caused the conveyer belt, improves the life of conveyer belt.
The utility model provides a annotate helium nailing device, including foretell annotate helium device to and nailing device, annotate helium device and can evacuate to annotate helium to the lithium cell to nailing device can carry out nailing seal to the notes liquid hole of lithium cell. The arrangement of the gas-liquid separator can effectively avoid the corrosion of electrolyte to equipment, so that electrolyte can be effectively prevented from entering the nailing device when the nailing device drives a sealing nail into a liquid injection port of the lithium battery, and the nailing device is prevented from generating a clamping nail fault.
The battery production equipment comprises the helium injection nailing device and a conveying belt arranged below the helium injection nailing device and used for conveying lithium batteries. The helium injection nailing device can be used for completing the evacuation helium injection of the lithium battery and nailing and sealing the liquid injection hole of the lithium battery. Through annotating the collection of gas-liquid separation ware to electrolyte in the helium nailing device, can effectively avoid electrolyte to lead to the fact the corruption to the conveyer belt, promote the practical life of conveyer belt to reduce the misjudgement rate and the system Cheng Guzhang rate of 3D laser detection in the battery production facility, effectively promote the productivity ratio of battery production facility to the battery.
The beneficial effects of the embodiment of the utility model include: the utility model provides a annotate helium device through setting up gas-liquid separator between evacuation and air feed subassembly and connecting nozzle, can separate the electrolyte when connecting nozzle and lithium cell annotate the liquid hole intercommunication and carry out the negative pressure extraction for the electrolyte gets into gas-liquid separator completely under the negative pressure effect, thereby ensure that no electrolyte remains in the connecting nozzle, consequently make annotate helium device's connecting nozzle can not drip electrolyte to annotate liquid hole and annotate on the equipment near the liquid hole, effectively alleviate the corruption of electrolyte to annotating near the liquid hole, can promote the life of conveyer belt, and can effectively improve the cleanliness of clean station.
The utility model provides a annotate helium nailing device can effectually avoid the electrolyte to the corruption of equipment, consequently can effectually prevent that electrolyte from getting into nailing device when nailing device is to the lithium cell annotates the liquid mouth in, thereby avoid electrolyte crystallization in nailing device, make nailing device produce the staple trouble, thereby can effectually improve the production efficiency of annotating helium nailing device.
The battery production equipment provided by the disclosure can effectively avoid the drip leakage of electrolyte, and can reduce the misjudgment rate of the 3D laser detection equipment on the battery production line, thereby reducing the manual abnormality processing time. By avoiding the dripping of electrolyte, the reject ratio of the battery product can be reduced, and the quality of the battery product can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a helium injection apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a helium injection apparatus according to a second embodiment of the present utility model;
FIG. 3 is a schematic diagram of a helium injection apparatus according to an embodiment of the present utility model.
Icon: 100-mounting rack; 101-connecting a nozzle; 102-vacuumizing and air supplying components; 103-a gas-liquid separator; 104-a three-way control valve; 105-vacuum pump; 106-helium gas supply means; 107-a pressure detection device; 108-a first pipe; 109-a second conduit; 110-a lifting assembly; 111-telescopic rods; 112-a liquid outlet; 113-an electrolyte recovery tank; 114-seals.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the secondary injection process of the lithium battery in the prior art, electrolyte drops to the battery injection hole and nearby equipment in the process of evacuating and helium injecting of the lithium battery, and the electrolyte drops more, so that the electrolyte can be brought into the nailing device when the nailing device pre-presses nails, and the problem of frequent clamping is caused after the electrolyte is crystallized. Because electrolyte drops are more, corrosion can be caused to a transport tool after long-time accumulation, the electrolyte in the liquid injection hole cannot be completely cleaned at the cleaning station, the misjudgment rate of 3D laser detection and the Cheng Guzhang rate of the liquid injection hole are increased, the service life of the transport belt is prolonged, the frequency of taking out defective products from the defective product material belt is increased, the labor cost and the material consumption cost are increased, and the production efficiency of the secondary liquid injection equipment is also reduced.
Therefore, improvements in helium injection apparatus are needed.
Referring to fig. 1, the present embodiment provides a helium filling apparatus, which includes a mounting frame 100, a connection nozzle 101 provided on the mounting frame 100, a vacuum pumping and gas supplying assembly 102 communicating with the connection nozzle 101, and a gas-liquid separator 103 provided between the vacuum pumping and gas supplying assembly 102 and the connection nozzle 101; the gas-liquid separator 103 is communicated with the vacuumizing and air supplying assembly 102 and the connecting nozzle 101, the connecting nozzle 101 is used for being connected with a liquid injection hole of the lithium battery, and the gas-liquid separator 103 can collect electrolyte in the lithium battery through the connecting nozzle 101. By installing the connection nozzle 101 on the mounting frame 100, the vacuumizing and air supplying assembly 102 is communicated with the connection nozzle 101, and the vacuumizing can be performed on the liquid injection hole of the lithium battery through the connection nozzle 101 and helium gas is filled from the liquid injection hole for detection. Through between gas-liquid separator 103 set up connecting nozzle 101 and evacuation and air feed assembly 102, can adopt gas-liquid separator 103 to accomplish the collection to the electrolyte when the evacuation, can make the electrolyte in the lithium cell get into inside gas-liquid separator 103 under the negative pressure effect that evacuation and air feed assembly 102 produced for all do not remain the electrolyte in connecting nozzle 101 and the connecting pipeline, thereby make connecting nozzle 101 not drip the electrolyte. Therefore, compared with the traditional helium injection device, the helium injection device provided by the embodiment can effectively avoid the electrolyte from dripping from the connecting nozzle 101, ensure the cleaning of the lithium battery liquid injection hole and nearby equipment, reduce the misjudgment rate of 3D laser detection, and effectively avoid the corrosion of the electrolyte to the nearby equipment, thereby effectively prolonging the service life of the conveyer belt and other equipment and reducing the workload of cleaning stations. Therefore, compared with the conventional technology, the embodiment can effectively avoid the dripping of the electrolyte.
According to the helium injection device, the gas-liquid separator 103 is arranged between the vacuumizing and air supplying assembly 102 and the connecting nozzle 101, electrolyte can be separated and collected when the connecting nozzle 101 is communicated with the liquid injection hole of the lithium battery for negative pressure extraction, so that the electrolyte completely enters the gas-liquid separator 103 under the action of negative pressure, no electrolyte residue in the connecting nozzle 101 is ensured, the connecting nozzle 101 of the helium injection device can not drip the electrolyte to the liquid injection hole and equipment nearby the liquid injection hole, corrosion of the electrolyte to the equipment nearby the liquid injection hole is effectively reduced, the service life of a conveyer belt can be prolonged, and the cleanliness of a cleaning station can be effectively improved.
Referring to fig. 2, as an embodiment, the vacuum and gas supply assembly 102 includes a three-way control valve 104, a vacuum pump 105, and a helium gas supply 106; three ports of the three-way control valve 104 are respectively communicated with the gas-liquid separator 103, the vacuum pump 105 and the helium gas supply device 106; the three-way control valve 104 is provided with a pressure detection device 107. The pressure detection device 107 is used for detecting the pressure in the three-way control valve 104, specifically, the pressure detection device 107 can detect the pressure in the three-way control valve 104 when the vacuum pump 105 pumps vacuum, and can also detect the pressure in the three-way control valve 104 when the helium gas supply device 106 fills the lithium battery with helium gas, so that the practicability is high. The three-way control valve 104 is arranged to be capable of communicating with the gas-liquid separator 103, the vacuum pump 105 and the helium gas supply device 106, the vacuum pump 105 can be communicated with the connecting nozzle 101 through the gas-liquid separator 103, after the connecting nozzle 101 is communicated with the lithium battery liquid injection hole, the vacuum pump 105 is used for extracting gas generated by the lithium battery in the formation stage through negative pressure, the gas-liquid separator 103 is used for gas-liquid separation, and finally, the air in the lithium battery is discharged. Through the arrangement of the helium supply device 106, helium can sequentially pass through the three-way control valve 104 to the gas-liquid separator 103 under the pressure effect, then enter the connecting nozzle 101 to inject helium into the lithium battery liquid injection hole, and realize helium injection to the lithium battery.
Referring to fig. 2, as an embodiment, the pressure detecting device 107 is an air pressure flowmeter. The gas pressure in the three-way control valve 104 can be detected through the arrangement of the air pressure flowmeter, the vacuum pressure detection during vacuumizing of the vacuum pump 105 can be completed, and the helium pressure detection during filling helium into the lithium battery by the helium supply device 106 can be completed, so that the device has the advantages of being strong in practicability and convenient to detect. And the reading visibility of the air pressure flowmeter is strong, so that the staff can read the detection data conveniently.
Referring to fig. 2, as an embodiment, the gas-liquid separator 103 is fixedly installed on the installation frame 100; the gas-liquid separator 103 is communicated with the connecting nozzle 101 through a first pipeline 108, and the gas-liquid separator 103 is communicated with the vacuumizing and air supplying assembly 102 through a second pipeline 109. The gas-liquid separator 103 may be communicated with the connection nozzle 101 through the arrangement of the first pipe 108, and in a specific implementation, the gas-liquid separator 103 may be mounted on the mounting frame 100, and then the gas-liquid separator 103 may be communicated with the connection nozzle 101 by using the first pipe 108, so that the gas-liquid separator 103 moves up and down together with the connection nozzle 101. The gas-liquid separator 103 may be disposed on other parts outside the mounting frame 100, so that the gas-liquid separator 103 and the connecting nozzle 101 are not installed together in spatial distribution, and the gas-liquid separator 103 and the connecting nozzle 101 are connected by the first pipeline 108 made of flexible materials. The gas-liquid separator 103 can be stably operated by the fixed arrangement of the gas-liquid separator 103, and the reliability of the gas-liquid separator 103 can be improved.
Referring to fig. 1, as an embodiment, a lifting assembly 110 for driving the lifting of the mounting frame is coupled to the mounting frame 100; the elevation assembly 110 includes a fixed frame, and a telescopic rod 111 mounted on the fixed frame for driving the elevation of the fixed frame 100. Lifting control to the mounting frame 100 can be achieved through the arrangement of the lifting assembly 110, the connecting nozzle 101 on the mounting frame 100 can be communicated with the liquid injection hole of the lithium battery through the extension of the telescopic rod 111, and the evacuation and helium injection to the lithium battery are achieved. The mounting frame 100 can be upwards moved through the contraction of the telescopic rod 111, so that the connecting nozzle 101 is separated from the liquid injection hole of the lithium battery, and the lithium battery is conveniently conveyed to the next station by the conveyor belt to be operated.
As an embodiment, as shown in fig. 1, the telescopic rod 111 is a telescopic cylinder. By setting the telescopic rod 111 as a telescopic cylinder, the control of lifting the mounting frame 100 up and down can be completed, the telescopic stroke of the telescopic cylinder is fixed, the driving force is stronger, and the automatic control is convenient.
Referring to fig. 3, as an embodiment, the gas-liquid separator 103 is provided with a drain 112, and the drain 112 is connected to an electrolyte recovery tank 113 via a pipe. The electrolyte in the gas-liquid separator 103 can be discharged through the arrangement of the liquid discharge port 112, and the electrolyte discharged from the gas-liquid separator 103 can be collected and uniformly treated through the arrangement of the electrolyte collection tank 113.
Referring to fig. 3, as an embodiment, the sealing member 114 is provided on the connection nozzle 101, and the sealing member 114 can seal the injection hole after the connection nozzle 101 communicates with the injection hole of the lithium battery. Through setting up of sealing member 114 can make the connecting nozzle 101 have better gas tightness with the notes liquid hole intercommunication of lithium cell back, and the leakage of pressure when effectively avoiding filling helium and evacuating is favorable to improving the work efficiency to lithium cell evacuation and filling helium.
The embodiment provides a annotate helium nailing device, including foretell annotate helium device to and nailing device, annotate the helium device and annotate the liquid mouth to the lithium cell and annotate after the helium is accomplished, nailing device can annotate the liquid mouth to the lithium cell and drive into the sealing nail. The helium injection nailing device comprises the helium injection device and the nailing device, wherein the helium injection device can evacuate and inject helium into a lithium battery, and the nailing device can seal a liquid injection hole of the lithium battery in a nailing mode. The arrangement of the gas-liquid separator can effectively avoid the corrosion of electrolyte to equipment, so that electrolyte can be effectively prevented from entering the nailing device when the nailing device drives a sealing nail into a liquid injection port of the lithium battery, and the nailing device is prevented from generating a clamping nail fault.
The embodiment provides a battery production device, which comprises the helium injecting nailing device and a conveying belt arranged below the helium injecting nailing device and used for conveying lithium batteries. The helium injection nailing device can be used for completing the evacuation helium injection of the lithium battery and nailing and sealing the liquid injection hole of the lithium battery. Through annotating the collection of gas-liquid separation ware to electrolyte in the helium nailing device, can effectively avoid electrolyte to lead to the fact the corruption to the conveyer belt, promote the practical life of conveyer belt to reduce the misjudgement rate and the system Cheng Guzhang rate of 3D laser detection in the battery production facility, effectively promote the productivity ratio of battery production facility to the battery.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The helium filling device is characterized by comprising a mounting frame, a connecting nozzle arranged on the mounting frame, a vacuumizing and air supplying component communicated with the connecting nozzle, and a gas-liquid separator arranged between the vacuumizing and air supplying component and the connecting nozzle; the gas-liquid separator is communicated with the vacuumizing and air supplying assembly and the connecting nozzle, the connecting nozzle is used for being connected with a liquid injection hole of the lithium battery, and the gas-liquid separator can collect electrolyte in the lithium battery through the connecting nozzle.
2. The helium filling apparatus according to claim 1, wherein the vacuum pumping and gas supplying assembly comprises a three-way control valve, a vacuum pump and a helium gas supplying means; three ports of the three-way control valve are respectively communicated with the gas-liquid separator, the vacuum pump and the helium gas supply device; and a pressure detection device is arranged on the three-way control valve.
3. Helium filling apparatus according to claim 2, wherein the pressure detection device is a barometric flow meter.
4. Helium filling apparatus according to claim 1, wherein the gas-liquid separator is fixedly mounted on the mounting frame; the gas-liquid separator is communicated with the connecting nozzle through a first pipeline, and the gas-liquid separator is communicated with the vacuumizing and air supplying assembly through a second pipeline.
5. Helium filling device according to claim 1, wherein the mounting frame is connected with a lifting assembly for driving the mounting frame to lift; the lifting assembly comprises a fixing frame and a telescopic rod which is arranged on the fixing frame and used for driving the fixing frame to lift.
6. Helium filling apparatus according to claim 5, wherein the telescopic rod is a telescopic cylinder.
7. Helium filling device according to claim 1, wherein a liquid outlet is arranged on the gas-liquid separator, and the liquid outlet is communicated with the electrolyte recovery tank through a pipeline.
8. Helium filling device according to claim 1, wherein a sealing element is arranged on the connecting nozzle, the connecting nozzle can be communicated with a filling hole of a lithium battery, and the sealing element can seal the filling hole.
9. Helium injecting nailing device, characterized by comprising a helium injecting device according to any one of claims 1-8, and a nailing device; helium gas can be injected into the liquid injection hole of the lithium battery by the helium injection device, and sealing nails can be driven into the liquid injection hole of the lithium battery by the nailing device.
10. A battery production apparatus comprising the helium-injecting nailing device according to claim 9, and a conveyor belt provided below the helium-injecting nailing device for conveying lithium batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320308325.0U CN219626869U (en) | 2023-02-23 | 2023-02-23 | Helium injection device, helium injection nailing device and battery production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320308325.0U CN219626869U (en) | 2023-02-23 | 2023-02-23 | Helium injection device, helium injection nailing device and battery production equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219626869U true CN219626869U (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320308325.0U Active CN219626869U (en) | 2023-02-23 | 2023-02-23 | Helium injection device, helium injection nailing device and battery production equipment |
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| Country | Link |
|---|---|
| CN (1) | CN219626869U (en) |
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2023
- 2023-02-23 CN CN202320308325.0U patent/CN219626869U/en active Active
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