Crystallization cleaning device for liquid injection hole of lithium ion battery

Abstract

The utility model discloses a lithium ion battery liquid injection hole crystal cleaning device, which comprises a cleaning bin, nozzles and a lifting cylinder, a plurality of groups of conveying belts are arranged in the cleaning bin, a plurality of lithium ion batteries are sequentially fixed on the conveying belts, liquid injection holes are arranged above the lithium ion batteries, a nozzle corresponding to each liquid injection hole is arranged above each conveying belt, and the lifting cylinder is arranged above each nozzle. A spraying core is rotationally arranged in a nozzle opening of each nozzle, an air inlet of each nozzle is communicated with an external dry ice air tank through a pipeline, a connecting rod is fixedly installed above each nozzle, the top of each connecting rod penetrates through the upper portion of the cleaning bin and is connected with a lifting plate outside the cleaning bin, and a lifting air cylinder is installed on the lifting plate in an inverted mode; the output end of the lifting cylinder penetrates through the lifting plate and is connected with the outside top of the cleaning bin. The dry ice cleaning device has the advantages that crystals at the liquid injection hole of the lithium ion battery are cleaned through dry ice, and meanwhile thorough cleaning is achieved through lifting of the nozzle and inclined rotation of the nozzle opening.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion batteries, in particular to a crystal cleaning device for a lithium ion battery injection hole. Background Art

[0002] During the lithium battery formation process, a negative pressure vacuum system is used to treat the internal real-time reaction gas in the lithium battery production process. Negative pressure formation is generally carried out at high temperature. During negative pressure formation, the vacuum work of the suction nozzle will lead out a certain amount of electrolyte, accompanied by the gasification of the electrolyte. After standing at high temperature, crystals will form around the injection hole, causing contamination of the injection hole and easy blockage. It is necessary to clean the crystals at the injection hole of the lithium-ion battery in time. Utility Model Content

[0003] The utility model aims to provide a lithium ion battery injection hole crystal cleaning device, which uses dry ice to clean the crystals at the lithium ion battery injection hole, and at the same time lifts and lowers the nozzle and tilts and rotates the nozzle to achieve thorough cleaning.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A crystallization cleaning device for a lithium-ion battery injection hole, characterized in that it comprises a cleaning chamber, a nozzle and a lifting cylinder, wherein a plurality of conveyor belts are arranged in the cleaning chamber, a plurality of lithium-ion batteries are fixed on the conveyor belts in sequence, injection holes are arranged above the lithium-ion batteries, a nozzle is arranged above each of the conveyor belts corresponding to the injection hole, a nozzle is rotatably arranged in the nozzle of the nozzle, an air inlet of each of the nozzles is connected to an external dry ice tank through a pipeline, a connecting rod is fixedly installed above the nozzle, the top of the connecting rod passes through the top of the cleaning chamber and is connected to a lifting plate outside the cleaning chamber, the lifting cylinder is invertedly installed on the lifting plate, and the output end of the lifting cylinder passes through the lifting plate and is connected to the top of the outer side of the cleaning chamber.

[0006] Preferably, the nozzle includes an outer shell, a connecting head and a driving inner cover, an injection port is arranged at the bottom of the outer shell, one end of the connecting head is sealed and connected to the pipeline, and the other end is connected to the upper part of the inner shell by bolts, the driving inner cover is arranged at the bottom of the connecting head, and a plurality of connecting ports are provided on the side wall of the driving inner cover, and the spray core is rotatably arranged inside the outer shell between the injection port and the driving inner cover.

[0007] Preferably, the injection port is provided with a core holder inside the housing, and two groups of connected conical ejection holes are opened on both inner and outer sides of the core holder, and the outer end of the ejection core is rolled and fitted on the inner conical ejection hole of the core holder.

[0008] Preferably, the outlet outer end of the riser core is spherical, and the outlet outer end of the riser core is in sealing contact with the inner conical ejection hole of the riser core seat.

[0009] Preferably, the upper end of the driving inner cover is provided with an opening of the same size as the connecting head, and at least four groups of the connecting ports are provided and are centrally symmetrically arranged between the upper end opening of the driving inner cover and the side wall.

[0010] Preferably, the communication port is arranged obliquely, and the angle between the communication port and the horizontal plane is 30°.

[0011] Preferably, a limiting sealing ring is also arranged inside the shell, and the upper part of the limiting sealing ring abuts against the connector. An annular sealing groove is also provided above the limiting sealing ring, and the annular sealing groove is filled with a lip sealing ring.

[0012] Preferably, an injection channel is provided in the spray core, a rolling block is provided on the top of the spray core, the side wall of the driving inner cover is inclined, the side surface of the rolling block on the top of the spray core is in contact with and rotates on the side wall of the driving inner cover, and one side of the spray core is in contact with the inside of the shell.

[0013] Preferably, two groups of C-shaped clamping seats are horizontally installed at the bottom of the connecting rod, and the top of the connecting head is clamped and fixed by the two groups of C-shaped clamping seats. One end of the C-shaped clamping seat is elastically connected to the bottom of the connecting rod, and the other end of the C-shaped clamping seat is fixedly connected by bolts. A positioning plate is vertically arranged on one side of the connecting head, and the clamping limit of the positioning plate is arranged at the limit fixing end of the C-shaped clamping seat.

[0014] Preferably, a plurality of guide columns are vertically arranged on the top of the cleaning chamber, and the guide columns penetrate the lifting plate and are movably arranged relative to the lifting plate.

[0015] In summary, the utility model has the following beneficial effects:

[0016] In the utility model, the dry ice particles of the dry ice blasting machine are accelerated in the high-pressure airflow and hit the clean surface of the injection hole. Under atmospheric pressure, the solid dry ice is directly sublimated into gaseous carbon dioxide without liquid phase. Carbon dioxide is a non-toxic liquefied gas that is cheap and easy to store in the workplace. Equally important, it is non-conductive and non-flammable. This design can greatly reduce labor costs and improve the yield of the subsequent process to a certain extent without introducing impurities.

[0017] The utility model realizes the lifting and rotating spraying of dry ice particles through the lifting cylinder and the spray core which can rotate inside the nozzle, so that the crystals at the injection hole can be thoroughly cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the nozzle structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the driving inner cover of the utility model. DETAILED DESCRIPTION

[0021] The specific implementation manner of the present utility model is further described below in conjunction with the accompanying drawings. This embodiment does not constitute a limitation to the present utility model.

[0022] like Figures 1 to 3 A lithium-ion battery injection hole crystallization cleaning device shown in the figure comprises a cleaning chamber 1, a nozzle 2 and a lifting cylinder 3, a plurality of conveyor belts 4 are arranged in the cleaning chamber 1, a plurality of lithium-ion batteries 5 are fixed on the conveyor belts 4 in sequence, an injection hole 6 is arranged above the lithium-ion battery 5, a nozzle 2 is arranged above each conveyor belt 4 corresponding to the injection hole 6, a nozzle core 7 is rotatably arranged in the nozzle of the nozzle 2, an air inlet of each nozzle 2 is connected to an external dry ice tank through a pipe 8, a connecting rod 9 is fixedly installed above the nozzle 2, the top of the connecting rod 9 passes through the top of the cleaning chamber 1 and is connected to a lifting plate 10 outside the cleaning chamber 1, the lifting cylinder 3 is invertedly installed on the lifting plate 10, and the output end of the lifting cylinder 3 passes through the lifting plate 10 and is connected to the top of the outer side of the cleaning chamber 1.

[0023] The nozzle 2 includes an outer shell 11, a connector 12 and a driving inner cover 13. An injection port 14 is provided at the bottom of the outer shell 11. One end of the connector 12 is sealed and connected to the pipeline 8, and the other end is connected to the upper part of the inner shell 11 by bolts. The driving inner cover 13 is provided at the bottom of the connector 12. A plurality of communication ports 17 are provided on the side wall of the driving inner cover 13. The spray core 7 is rotatably provided inside the outer shell 11 between the injection port 14 and the driving inner cover 13.

[0024] The injection port 14 is provided with a core holder 15 inside the housing 11 . The core holder 15 has two groups of connected conical ejection holes 16 on both the inner and outer sides. The outer end of the ejection core 7 is rolled and fitted on the inner conical ejection hole 16 of the core holder 15 .

[0025] The outer end of the outlet of the riser core 7 is spherical, and the outer end of the outlet of the riser core 7 is in sealing contact with the inner conical outlet hole 16 of the riser core seat 15.

[0026] The upper end of the driving inner cover 13 is provided with an opening of the same size as the connector 12. There are at least four groups of communication ports 17, which are centrally symmetrically arranged between the upper end opening of the driving inner cover 13 and the side wall. The communication ports 17 are obliquely arranged and have an angle of 30° with the horizontal plane.

[0027] A limiting sealing ring 18 is also arranged inside the housing 11 , and the upper part of the limiting sealing ring 18 abuts against the connector 12 . An annular sealing groove 19 is also arranged above the limiting sealing ring 18 , and a lip sealing ring is filled in the annular sealing groove 19 .

[0028] An injection channel is provided in the riser 7, a rolling block 20 is provided on the top of the riser 7, and the side wall of the driving inner cover 13 is inclined. The side surface of the rolling block 20 on the top of the riser 7 is in contact with and rotates with the side wall of the driving inner cover 13, and one side of the riser 7 is in contact with the inside of the housing 11.

[0029] Two groups of C-shaped clamping seats 21 are horizontally installed at the bottom of the connecting rod 9, and the top of the connecting head 12 is clamped and fixed by the two groups of C-shaped clamping seats 21. One end of the C-shaped clamping seat 21 is elastically connected to the bottom of the connecting rod 9, and the other end of the C-shaped clamping seat 21 is fixedly connected by bolts. A positioning plate 22 is vertically arranged on one side of the connecting head 12, and the clamping limit of the positioning plate 22 is arranged at the limit fixing end of the C-shaped clamping seat 21.

[0030] A plurality of guide posts 23 are vertically disposed on the top of the cleaning chamber 1 . The guide posts 23 penetrate the lifting plate 10 and are movably disposed relative to the lifting plate 10 .

[0031] In the utility model, the dry ice particles of the dry ice blasting machine are accelerated in the high-pressure airflow and hit the clean surface of the injection hole. Under atmospheric pressure, the solid dry ice is directly sublimated into gaseous carbon dioxide without liquid phase. Carbon dioxide is a non-toxic liquefied gas that is cheap and easy to store in the workplace. Equally important, it is non-conductive and non-flammable. This design can greatly reduce labor costs and improve the yield of the subsequent process to a certain extent without introducing impurities.

[0032] The utility model realizes the lifting and rotating spraying of dry ice particles through the lifting cylinder and the spray core which can rotate inside the nozzle, so that the crystals at the injection hole can be thoroughly cleaned.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. A lithium-ion battery injection hole crystal cleaning device, characterized in that: It includes a cleaning chamber, a nozzle and a lifting cylinder. Multiple groups of conveyor belts are arranged in the cleaning chamber. Several lithium-ion batteries are fixed on the conveyor belts in sequence. Injection holes are arranged above the lithium-ion batteries. A nozzle is arranged above each of the conveyor belts corresponding to the injection hole. A spray core is rotatably arranged in the nozzle of the nozzle. The air inlet of each nozzle is connected with an external dry ice tank through a pipeline. A connecting rod is fixedly installed above the nozzle. The top of the connecting rod passes through the top of the cleaning chamber and is connected to a lifting plate outside the cleaning chamber. The lifting cylinder is inverted and installed on the lifting plate. The output end of the lifting cylinder passes through the lifting plate and is connected to the top of the outer side of the cleaning chamber.

2. A lithium-ion battery injection hole crystal cleaning device according to claim 1, characterized in that: The nozzle includes an outer shell, a connector and a driving inner cover. An injection port is arranged at the bottom of the outer shell. One end of the connector is sealed and connected to a pipeline, and the other end is connected to the upper part of the inner shell by bolts. The driving inner cover is arranged at the bottom of the connector. A plurality of communication ports are arranged on the side wall of the driving inner cover. The spray core is rotatably arranged inside the outer shell between the injection port and the driving inner cover.

3. A lithium-ion battery injection hole crystal cleaning device according to claim 2, characterized in that: The injection port is provided with a core holder inside the shell, and two groups of connected conical ejection holes are opened on both inner and outer sides of the core holder. The outer end of the ejection core is rolled and fitted on the inner conical ejection hole of the core holder.

4. A lithium-ion battery injection hole crystal cleaning device according to claim 3, characterized in that: The outlet outer end of the riser core is spherical, and the outlet outer end of the riser core is in sealing contact with the inner conical ejection hole of the riser core seat.

5. A lithium-ion battery injection hole crystal cleaning device according to claim 2, characterized in that: The upper end of the driving inner cover is provided with an opening of the same size as the connecting head, and at least four groups of the communicating ports are provided and are centrally symmetrically arranged between the upper end opening of the driving inner cover and the side wall.

6. A lithium-ion battery injection hole crystal cleaning device according to claim 5, characterized in that: The communication port is arranged obliquely, and the angle between the communication port and the horizontal plane is 30°.

7. A lithium-ion battery injection hole crystal cleaning device according to claim 2, characterized in that: A limiting sealing ring is also arranged inside the shell, and the upper part of the limiting sealing ring abuts against the connector. An annular sealing groove is also arranged above the limiting sealing ring, and a lip sealing ring is filled in the annular sealing groove.

8. A lithium-ion battery injection hole crystal cleaning device according to claim 2, characterized in that: The core is provided with an injection channel, a rolling block is provided on the top of the core, the side wall of the driving inner cover is inclined, the side surface of the rolling block on the top of the core is in contact with and rotates on the side wall of the driving inner cover, and one side of the core is in contact with the inside of the shell.

9. A lithium-ion battery injection hole crystal cleaning device according to claim 2, characterized in that: Two groups of C-shaped clamping seats are horizontally installed at the bottom of the connecting rod, and the top of the connecting head is clamped and fixed by the two groups of C-shaped clamping seats. One end of the C-shaped clamping seat is elastically connected to the bottom of the connecting rod, and the other end of the C-shaped clamping seat is fixedly connected by bolts. A positioning plate is vertically arranged on one side of the connecting head, and the clamping limit of the positioning plate is arranged at the limit fixing end of the C-shaped clamping seat.

10. A lithium-ion battery injection hole crystal cleaning device according to claim 1, characterized in that: A plurality of guide columns are vertically arranged on the top of the cleaning bin. The guide columns penetrate the lifting plate and are movably arranged relative to the lifting plate.

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