Secondary injection nailing device

Abstract

This utility model discloses a secondary liquid injection and nailing device, comprising: a manifold with a main channel; a liquid injection unit, including a liquid injection pipe connected to the main channel, an electrolyte supply device, a gas supply device, and a vacuum device connected to the liquid injection pipe; a nail tube connected to the main channel; a nailing rod inserted into the main channel, the nailing rod being connected to a first driving device, which drives the nailing rod to move along the length of the main channel; and a cleaning unit, including a cleaning pipe connected to the main channel and a cleaning agent storage tank connected to the cleaning pipe. The liquid injection unit completes the liquid injection process. The nails are transported to the main channel through the nail tube, and after the nails are driven into the liquid injection holes by the nailing rod, the cleaning agent is delivered into the main channel of the manifold through the cleaning pipe. Simultaneously, the nailing rod reciprocates within the main channel under the drive of the first driving device to clean the manifold, thereby preventing electrolyte crystallization within the manifold.

Description

Technical Field

[0001] This utility model relates to the field of battery liquid injection equipment technology, specifically a secondary liquid injection and nailing device. Background Technology

[0002] In the production of lithium batteries, electrolyte injection is a crucial step, directly impacting the battery yield. To maximize battery performance, a two-stage electrolyte injection process is commonly used. This involves first vacuuming the formed battery casing and then filling it with electrolyte, followed by formation. After formation, a second electrolyte injection is performed, and the injection holes are sealed. The equipment used for this two-stage injection process is a secondary electrolyte injection machine. However, existing machines lack a cleaning step for the manifold (injection head), leading to electrolyte crystallization within the manifold and causing discrepancies between the actual injected volume and the preset volume, thus affecting battery performance. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides a secondary liquid injection and nailing device. The secondary liquid injection and nailing device is connected to a cleaning pipe on the main channel of the manifold. After each liquid injection is completed, a cleaning agent is delivered through a cleaning agent supply device to clean the main channel, thereby preventing the electrolyte from crystallizing in the manifold.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a secondary liquid injection nailing device, comprising:

[0005] A busbar block, wherein the busbar block is provided with a main channel;

[0006] The liquid injection unit includes a liquid injection pipe connected to the main channel, an electrolyte supply device, a gas supply device, and a vacuum pumping device connected to the liquid injection pipe.

[0007] A nail tube, which is connected to the main channel;

[0008] A nailing rod is inserted into the main channel and is connected to a first driving device. Under the drive of the first driving device, the nailing rod moves along the length of the main channel.

[0009] The cleaning unit includes a cleaning pipe connected to the main channel and a cleaning agent storage tank connected to the cleaning pipe.

[0010] The above technical solution involves completing the liquid injection process through an injection unit, delivering the glue nails to the main channel through a nail tube, and then driving the glue nails into the injection holes through a nailing rod. Finally, the cleaning agent is delivered into the main channel of the manifold through a cleaning tube. Simultaneously, the nailing rod reciprocates in the main channel under the drive of the first driving device to clean the manifold and thus prevent the electrolyte from crystallizing inside the manifold.

[0011] Furthermore, the cleaning unit also includes a nitrogen supply device, which is connected to the cleaning pipe. After the cleaning pipe, in conjunction with the nailing rod, cleans the manifold, the nitrogen supply device provides nitrogen to purge the pipe and main channel of the cleaning pipe clean, preventing residual cleaning agent from affecting subsequent liquid injection processes.

[0012] Furthermore, the main channel is equipped with an elastic clamping member, which is located downstream of the nail tube. Before the nail-driving rod is activated, the adhesive nails conveyed through the nail tube are clamped and positioned by the elastic clamping member. The elastic clamping member is used to position the adhesive nails within the main channel, ensuring that the adhesive nails are aligned with the injection hole, thereby guaranteeing that the adhesive nails can be driven into the injection hole when the nail-driving rod is activated.

[0013] Furthermore, the manifold is provided with a first channel, a second channel, and a third channel communicating with the main channel. The second and third channels are located downstream of the elastic clamping member. The first channel communicates with the nail tube, the second channel communicates with the injection tube, and the third channel communicates with the cleaning tube. Through this design, the outlet of the first channel, the elastic clamping member, the outlet of the second channel, and the outlet of the third channel are sequentially arranged within the main channel of the manifold, with the outlet of the third channel being closer to the outlet of the main channel, thereby minimizing interference between the injection and nailing processes.

[0014] Furthermore, the manifold is equipped with an injection nozzle, which is connected to the main channel outlet. The injection nozzle is used to connect with the injection hole.

[0015] Furthermore, a vibratory feeder is included, which can load adhesive nails. The outlet of the vibratory feeder is connected to the end of the nail tube opposite to the main channel. The vibratory feeder enables automated feeding of adhesive nails, reducing manual intervention and lowering labor costs.

[0016] Furthermore, an air blowing device is included, which is located at the connection between the nail tube and the outlet of the vibratory plate, and can blow the rubber nails in the nail tube into the main channel. The air blowing device is used to ensure that the rubber nails smoothly enter the main channel from the nail tube.

[0017] Furthermore, the elastic clamping member includes a hollow column fixed to the inner wall of the main channel, and a clamping portion extending from the hollow column, the diameter of which is smaller than that of the main channel. After the adhesive nail enters the main channel, it falls into the hollow column, slides down the hollow column to the clamping portion, and is positioned by the clamping portion.

[0018] Furthermore, a second driving device is included, the drive end of which is connected to a mounting bracket. The busbar and the first driving device are respectively connected and fixed to the mounting bracket. This solution provides a mounting bracket for mounting the busbar and the first driving device, facilitating the assembly and disassembly of the overall device.

[0019] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0020] The secondary liquid injection and nailing device disclosed in this application completes the liquid injection process through the liquid injection unit. The glue nail is transported to the main channel through the nail tube, and the glue nail is driven into the liquid injection hole through the nailing rod. Then, the cleaning agent is sent into the main channel of the manifold through the cleaning tube. At the same time, the nailing rod reciprocates in the main channel under the drive of the first driving device to achieve the purpose of cleaning the manifold, thereby preventing the electrolyte from crystallizing in the manifold.

[0021] This application also includes a nitrogen supply device, which is connected to the cleaning pipe. After the cleaning pipe, in conjunction with the nailing rod, cleans the manifold, the nitrogen supply device provides nitrogen to purge the pipe and main channel of the cleaning pipe, thus preventing residual cleaning agent from affecting subsequent liquid injection processes.

[0022] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the secondary liquid injection and nailing device in this embodiment of the present invention;

[0025] Figure 2 These are the front view, front sectional view and left sectional view of the busbar in this embodiment of the utility model;

[0026] Figure 3This is a schematic diagram of the busbar and each connecting pipe in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the elastic clamping member in the embodiment of this utility model.

[0028] The reference numerals in the above figures are as follows: 1. Manifold; 11. Main channel; 12. First channel; 13. Second channel; 14. Third channel; 15. Injection nozzle; 2. Nail tube; 3. Injection tube; 4. Cleaning tube; 51. Frame; 52. Slide rail; 53. Mounting plate; 6. Second drive device; 7. First drive device; 8. Nail rod; 9. Elastic clamping element; 91. Hollow column; 92. Clamping petal; 93. Protrusion. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] Example: This example discloses a secondary liquid injection nailing device, comprising:

[0032] Mounting plate 53 is connected to the drive end of the second driving device 6.

[0033] In some feasible embodiments, such as Figure 1 As shown, the second driving device 6 is fixed on the frame 51, the frame 51 is provided with a slide rail 52, the slide rail 52 is provided with a slidable slider, and the mounting plate 53 is connected and fixed to the slider.

[0034] A manifold 1 is fixedly connected to the mounting plate 53. The manifold 1 has a main channel 11, and an injection nozzle 15 is provided at the outlet of the main channel 11. Under the drive of the second driving device 6, the mounting plate 53 can move the manifold 1, thereby connecting the injection nozzle 15 with the battery's injection hole.

[0035] The busbar 1 is also provided with a first channel 12, a second channel 13 and a third channel 14 that are connected to the main channel 11.

[0036] In some feasible embodiments, such as Figure 2 As shown, the main channel 11 runs through the manifold 1 from top to bottom. A first channel 12 is provided on the left side of the manifold 1, a second channel 13 is provided on the front side of the manifold 1, and a third channel 14 is provided on the right side of the manifold 1.

[0037] like Figure 3 As shown, the first channel 12 is connected to a nail tube 2, and the side of the nail tube 2 opposite to the first channel 12 is connected to a glue nail supply device.

[0038] In some feasible embodiments, the glue nail supply device includes a vibratory feeder, the outlet of which is connected to the end of the nail tube 2 opposite to the main channel 11. The vibratory feeder loads glue nails, and the vibratory feeder can shake and deliver the glue nails into the nail tube 2, realizing automatic feeding.

[0039] The nail tube 2 is also connected to an air blowing device, which is used to blow the glue nails that have entered the nail tube 2 into the main channel 11.

[0040] In some feasible embodiments, the air blowing device includes equipment such as an air knife or a blower. The air blowing device can be set at the connection between the nail tube 2 and the vibratory plate outlet to ensure that the glue nails smoothly enter the main channel 11 from the nail tube 2.

[0041] An elastic clamping member 9 is provided in the main channel 11. The elastic clamping member 9 is located downstream of the nail tube 2. The glue nails conveyed through the nail tube 21 are clamped and positioned by the elastic clamping member 9 so that the glue nails are aligned with the battery's injection hole.

[0042] In some feasible embodiments, such as Figure 4 As shown, the elastic clamping member 9 includes a hollow column 91 fixedly connected to the inner wall of the main channel 11, and a clamping portion extending downward from the hollow column 91. The diameter of the clamping portion is smaller than that of the main channel. The clamping portion includes multiple clamping petals 92, each clamping petal 92 having an inwardly protruding protrusion 93, and the protrusion 93 having an inclined surface shaped to fit a rubber nail. After the rubber nail enters the main channel 11, it falls into the hollow column 91, slides down the hollow column 91 to the clamping portion, and is positioned by the clamping portion.

[0043] A first driving device 7 is installed on the mounting plate 53. A nailing rod 8 is fixedly connected to the driving end of the first driving device 7. The nailing rod 8 is located in the main channel 11 of the busbar 1. Under the drive of the first driving device 7, the nailing rod 8 can extend and retract along the main channel 11, thereby driving the rubber nail in the main channel 11 into the electrolyte injection hole of the battery.

[0044] It should be noted that, in order to ensure the overall airtightness of the manifold 1, the nail rod 8 is fitted with a sealing ring.

[0045] The first drive device 7 and the second drive device 6 mentioned above can be common drive devices such as cylinders.

[0046] The second channel 13 is connected to the liquid injection unit. The liquid injection unit includes a liquid injection pipe 3 connected to the second channel 13, and an electrolyte supply device, a gas supply device, and a vacuum pumping device connected to the liquid injection pipe 3.

[0047] The electrolyte supply device includes an electrolyte storage tank 31 and a delivery pipe connected to the outlet of the electrolyte storage tank 31. One end of the delivery pipe away from the electrolyte storage tank 31 is connected to the injection pipe 3.

[0048] The gas supply device includes a helium storage tank 32 and a gas delivery pipe connected to the outlet of the helium storage tank. One end of the gas delivery pipe away from the helium storage tank 32 is connected to the liquid injection pipe 3.

[0049] The vacuum pumping device includes a vacuum pump 33, which is connected to the liquid injection pipe 3 via a vacuum tube.

[0050] The infusion tube, gas tube, and vacuum tube are each equipped with a valve, and the opening and closing of the valves controls the switching between the infusion tube, gas tube, or vacuum tube and the injection tube 3 in a connected state and an interrupted state.

[0051] The third channel 14 is connected to a cleaning unit, which includes a cleaning pipe 4 connected to the main channel 11 and a cleaning agent storage tank 41 connected to the cleaning pipe 4. A valve is provided on the cleaning pipe 4.

[0052] Through the above technical solution, the liquid injection process is completed by the liquid injection unit. The glue nail is transported to the main channel 11 through the nail tube 2, and the glue nail is driven into the liquid injection hole by the nailing rod 8. Then, the cleaning agent is sent into the main channel 11 of the manifold 1 through the cleaning tube 4. At the same time, the nailing rod 8 reciprocates in the main channel 11 under the drive of the first driving device 7 to achieve the purpose of cleaning the manifold 1, thereby preventing the electrolyte from crystallizing in the manifold 1.

[0053] In some feasible embodiments, the cleaning agent includes dimethyl carbonate solvent.

[0054] The cleaning unit also includes a nitrogen supply device, which includes a nitrogen storage tank 42. The nitrogen storage tank 42 is connected to the cleaning pipe 4 via a pipeline. After the cleaning pipe 4, in conjunction with the nailing rod 8, cleans the manifold 1, the nitrogen supply device provides nitrogen to purge the pipe and main channel 11 of the cleaning pipe 4 clean, preventing residual cleaning agent from affecting subsequent liquid injection processes.

[0055] The operating steps of the above-mentioned secondary injection nailing device are as follows:

[0056] After the battery is in place, the second drive device 6 extends and drives the manifold 1 to move, so that the injection nozzle 15 aligns with the battery's injection hole.

[0057] The vibratory feeder shakes the glue nail into the nail tube 2. The air blowing device blows the glue nail in the nail tube 2 into the main channel 11. The glue nail falls into the clamping part along the hollow column 91 of the elastic clamp 9, thereby positioning the glue nail so that it is aligned with the battery's liquid injection hole.

[0058] The vacuum pump device evacuates the battery;

[0059] When the vacuum level reaches the preset value, the vacuum pumping device shuts off, and the electrolyte supply device injects electrolyte into the battery.

[0060] After the electrolyte injection is completed, the electrolyte supply device is turned off, the electrolyte injection process is finished, and the gas supply device fills the battery with helium.

[0061] When the internal pressure of the battery reaches the preset value, the gas supply device is turned off, the first drive device 7 extends, and drives the nailing rod 8 to extend into the elastic clamping member 9 to push the glue nail until the glue nail is driven into the injection hole.

[0062] The first drive device 7 retracts, the second drive device 6 retracts, the cleaning unit operates, and the cleaning agent is input into the manifold 1 through the cleaning pipe 4. At the same time, the first drive device 7 continues to operate, driving the nailing rod 8 to extend and retract multiple times in the main channel 11.

[0063] The cleaning unit is shut down, and at the same time the first drive device 7 retracts, and the nitrogen supply device provides nitrogen to purge the inside of the cleaning pipe 4 and the manifold 1.

[0064] The cleaning unit is shut down.

[0065] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

Claims

1. A secondary liquid injection nailing device, characterized by, include: A busbar block, wherein the busbar block is provided with a main channel; The liquid injection unit includes a liquid injection pipe connected to the main channel, an electrolyte supply device, a gas supply device, and a vacuum pumping device connected to the liquid injection pipe. A nail tube, which is connected to the main channel; A nailing rod is inserted into the main channel and is connected to a first driving device. Under the drive of the first driving device, the nailing rod moves along the length of the main channel. The cleaning unit includes a cleaning pipe connected to the main channel and a cleaning agent storage tank connected to the cleaning pipe.

2. The secondary liquid injection nailing device of claim 1, wherein, The cleaning unit also includes a nitrogen supply device, which is connected to the cleaning pipe.

3. The secondary liquid injection nailing device as described in claim 1, characterized in that, The main channel is equipped with an elastic clamping member, which is located downstream of the nail tube. Before the nailing rod is activated, the rubber nails transported through the nail tube are clamped and positioned by the elastic clamping member.

4. The secondary liquid injection nailing device as described in claim 3, characterized in that, The manifold has a first channel, a second channel, and a third channel that are connected to the main channel. The second channel and the third channel are located downstream of the elastic clamp. The first channel is connected to the nail tube, the second channel is connected to the injection tube, and the third channel is connected to the cleaning tube.

5. The secondary liquid injection nailing device as described in claim 1, characterized in that, The manifold is equipped with an injection nozzle, which is connected to the main channel outlet.

6. The secondary liquid injection nailing device as described in claim 3, characterized in that, The vibratory feeder can be loaded with rubber nails, and the outlet of the vibratory feeder is connected to the end of the nail tube opposite to the main channel.

7. The secondary liquid injection nailing device as described in claim 6, characterized in that, It includes an air blowing device, which is located at the connection between the nail tube and the outlet of the vibrating plate, and can blow the rubber nails in the nail tube into the main channel.

8. The secondary liquid injection nailing device as described in claim 3, characterized in that, The elastic clamping member includes a hollow column that is fixed to the inner wall of the main channel, and a clamping part extending from the hollow column, the diameter of which is smaller than that of the main channel.

9. The secondary liquid injection nailing device as described in claim 1, characterized in that, It includes a second drive unit, the drive end of which is connected to a mounting bracket, and the busbar and the first drive unit are respectively connected and fixed to the mounting bracket.

Images