Battery cell liquid injection port laser cleaning dust removal cover

Abstract

The utility model provides a battery cell liquid injection port laser cleaning dust removal cover which comprises an upper dust removal cover body and a lower dust removal cover body, the upper dust removal cover body is detachably fixed on the lower dust removal cover body, the battery cell liquid injection port laser cleaning dust removal cover further comprises a laser cleaning channel penetrating through the upper dust removal cover body and the lower dust removal cover body from top to bottom, and a lower pipe opening protruding downwards is fixed to the lower end of the laser cleaning channel. A circle of groove formed in the bottom face of the lower dust removal cover body is formed in the circumferential side of the upper end of the lower pipe opening, at least two positive pressure air inlet channels leading to the groove are formed in the lower dust removal cover body, airflow blown into the groove through the positive pressure air inlet channels forms cyclone airflow, and a negative pressure air outlet channel leading to the laser cleaning channel from the side face is further formed in the lower dust removal cover body. The cyclone design that the positive pressure air inlet channels blow air and the negative pressure air outlet channel sucks air is adopted, aluminum powder is blown up, cleaning dead corners are eliminated, and the aluminum powder can be removed more effectively; the original integrated dust removal cover is changed into a split type dust removal cover, and the upper dust removal cover body can be conveniently detached from the lower dust removal cover body, so that the dust removal cover is convenient to detach and clean.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery production equipment, in particular to a laser cleaning and dust removal cover for a battery core liquid injection port. Background Art

[0002] When laser cleaning the battery cell filling port, Figure 1 As shown in the figure, the aluminum powder in the dust hood flows with the positive pressure-negative pressure, and some of the aluminum powder will adhere to the residual area S such as the inner wall of the dust hood and the root of the positive pressure pipe of the cleaning cover, and cannot be completely removed; the reason is that there are dead corners in the dust hood where there is no airflow, causing the aluminum powder to adhere to the inner wall of the dust hood for a long time and making it inconvenient to clean. The aluminum powder in the laser cleaning of the battery cell injection port cannot be completely sucked out, affecting the welding yield of the sealing pins and the safety performance of the battery cell. Utility Model Content

[0003] In view of the above-mentioned problems, the utility model proposes a laser cleaning and dust removal cover for the battery cell filling port, which adopts a cyclone design of several positive pressure pipes for blowing and a negative pressure for suction to blow up the aluminum powder and eliminate cleaning dead corners. It can more effectively remove the aluminum powder, improve the sealing nail welding yield and the safety performance of the battery cell, and is convenient for disassembly and cleaning.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A laser cleaning dust removal cover for a battery cell filling port comprises an upper dust removal cover body and a lower dust removal cover body, wherein the upper dust removal cover body is detachably fixed to the lower dust removal cover body, and further comprises a laser cleaning channel that penetrates the upper dust removal cover body and the lower dust removal cover body from top to bottom, wherein a downwardly convex lower pipe opening is fixed to the lower end of the laser cleaning channel, and a circle of grooves opened on the bottom surface of the lower dust removal cover body are arranged around the upper end of the lower pipe opening, and at least two positive pressure air inlets leading to the grooves are arranged on the lower dust removal cover body, and the airflow blown into the grooves by the positive pressure air inlet forms a cyclonic airflow, and the lower dust removal cover body is also provided with a negative pressure air outlet leading from the side to the laser cleaning channel.

[0006] Preferably, a positioning and mounting groove for mounting the upper dust removal cover is provided on the lower dust removal cover, the upper dust removal cover is detachably mounted on the lower dust removal cover by means of a plurality of knob bolts, and screw holes corresponding to the knob bolts are provided on the lower dust removal cover.

[0007] Preferably, the upper dust removal cover is a rectangular block, and the lower dust removal cover includes an upper block and a lower fixing plate, and the upper block and the lower fixing plate are integrally formed.

[0008] Preferably, the outer side surface of the lower pipe opening is a conical surface that is larger at the top and smaller at the bottom.

[0009] Preferably, the groove is an annular groove, the positive pressure air inlet passage leads into the annular groove from the side of the annular groove, and the positive pressure air inlet passage forms an angle with the radial direction of the annular groove.

[0010] Preferably, the negative pressure air outlet channel is inclined downward and leads into the laser cleaning channel.

[0011] Preferably, a connector connected to an air outlet pipe is fixed to the outer end of the negative pressure air outlet passage.

[0012] Preferably, the joint includes a fixing plate, an air outlet hole is opened on the fixing plate, an air outlet pipe is fixedly connected to the air outlet hole, the fixing plate is fixed to the lower dust removal cover body by a plurality of mounting screws, and the air outlet hole corresponds to the negative pressure outlet duct.

[0013] Preferably, it also includes a cleaning cover fixed at the bottom of the lower dust removal hood body, a conical groove is provided on the upper surface of the cleaning cover, an airflow space is formed between the conical groove, the groove and the lower pipe mouth, a cleaning hole is provided at the bottom of the conical groove and leads to the bottom surface of the cleaning cover, the cleaning hole corresponds to the laser cleaning channel, and a positioning ring is fixed at the bottom of the cleaning hole.

[0014] Preferably, the lower dust removal cover is fixed to the upper surface of the cleaning cover plate by fixing screws.

[0015] The beneficial effects of the utility model are as follows: 1. The utility model adopts a cyclone design of several positive pressure air inlets for blowing and a negative pressure air outlet for sucking, so as to blow up the aluminum powder and eliminate the cleaning dead corners, thereby more effectively removing the aluminum powder and improving the sealing nail welding yield and the safety performance of the battery cell; 2. The original integrated dust cover is changed into a split and detachable one, and the upper dust cover body can be conveniently removed from the lower dust cover body, so as to facilitate disassembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an existing dust removal hood;

[0018] Figure 2 This is a three-dimensional diagram of a laser cleaning and dust removal cover for a battery cell injection port according to the utility model;

[0019] Figure 3 This is a top view of a laser cleaning and dust removal cover for a battery cell injection port according to the utility model;

[0020] Figure 4 for Figure 3 Section view along line AA;

[0021] Figure 5 for Figure 4 A partial enlarged view of the portion shown in B;

[0022] Figure 6 It is a cross-sectional view of the upper dust removal hood and the lower dust removal hood in the utility model;

[0023] Figure 7 It is a cross-sectional view of the cleaning cover plate in the utility model;

[0024] Figure 8 It is a stereoscopic view of the upper dust removal hood and the lower dust removal hood of the utility model.

[0025] The numbers in the figures are:

[0026] Upper dust removal cover 1, knob bolt 11;

[0027] The lower dust removal cover 2, the positioning and mounting groove 21, the upper block 22, and the lower fixing plate 23;

[0028] Laser cleaning channel 3;

[0029] Lower pipe opening 4;

[0030] Groove 5;

[0031] Positive pressure air inlet 6, positive pressure tube 61, connector 62;

[0032] Negative pressure airway 7;

[0033] Joint 8, fixing plate 81, air outlet pipe 82, mounting screws 83, negative pressure pipe 84;

[0034] Cleaning cover plate 9, conical groove 91, cleaning hole 92, positioning ring 93, air flow space 94. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Reference Figure 2-8A laser cleaning dust removal cover for a battery cell injection port comprises an upper dust removal cover body 1 and a lower dust removal cover body 2, wherein the upper dust removal cover body 1 is detachably fixed on the lower dust removal cover body 2, and further comprises a laser cleaning channel 3 which penetrates the upper dust removal cover body 1 and the lower dust removal cover body 2 from top to bottom, a lower pipe mouth 4 convex downwardly fixed at the lower end of the laser cleaning channel 3, a circle of grooves 5 which are arranged on the upper end periphery of the lower pipe mouth 4 and are arranged on the bottom surface of the lower dust removal cover body 2, at least two positive pressure air inlets 6 which lead to the grooves are arranged on the lower dust removal cover body 2, and the airflow blown into the groove 5 by the positive pressure air inlet 6 forms a cyclonic airflow, and a negative pressure air outlet 7 which leads to the laser cleaning channel from the side is also arranged on the lower dust removal cover body 2.

[0037] In some embodiments, the lower dust cover 2 is provided with a positioning installation groove 21 for installing the upper dust cover 1, and the upper dust cover 1 is detachably installed on the lower dust cover 2 through a plurality of knob bolts 11, and the lower dust cover 2 is provided with screw holes corresponding to the knob bolts 11, so as to facilitate installation, positioning and disassembly.

[0038] In some embodiments, the upper dust removal cover 1 is a rectangular block, and the lower dust removal cover 2 includes an upper block 22 and a lower fixing plate 23, and the upper block 22 and the lower fixing plate 23 are integrally formed. Of course, both can also be other shapes, not limited to the above shapes. The positioning installation groove 21 is opened on the upper block 22.

[0039] In some embodiments, the outer side surface of the lower pipe opening 4 is a conical surface that is larger at the top and smaller at the bottom, which is conducive to the flow of airflow.

[0040] In some embodiments, the groove 5 is an annular groove, and the positive pressure air inlet 6 passes into the annular groove from the side of the annular groove. The positive pressure air inlet 6 forms an angle with the radial direction of the annular groove. The angle can be selected as needed, as long as the airflow entering the annular groove can form a cyclonic airflow. The number of positive pressure air inlet 6 can be two, three, four or other more numbers, evenly arranged. The positive pressure air inlet 6 is connected to the positive pressure pipe 61 through a connector 62.

[0041] In some embodiments, the negative pressure outlet channel 7 is inclined downward and leads into the laser cleaning channel 3 .

[0042] In some embodiments, a joint 8 connected to an air outlet pipe is fixed to the outer end of the negative pressure air outlet 7. Specifically, the joint 8 includes a fixing plate 81, on which an air outlet hole is opened, and an air outlet pipe 82 is fixedly connected to the air outlet hole. The fixing plate 81 is fixed to the lower dust removal cover 2 by a plurality of mounting screws 83, and the air outlet hole corresponds to the negative pressure air outlet 7. The air outlet pipe 82 is connected to a negative pressure pipe 84.

[0043] In some embodiments, it also includes a cleaning cover plate 9 fixed to the bottom of the lower dust removal cover body 2, a conical groove 91 is provided on the upper surface of the cleaning cover plate 9, an airflow space 94 is formed between the conical groove 91, the groove 5 and the lower pipe opening 4, a cleaning hole 92 leading to the bottom surface of the cleaning cover plate 9 is provided at the bottom of the conical groove 91, the cleaning hole 92 corresponds to the laser cleaning channel 3, and a circle of positioning ring 93 is fixed at the bottom of the cleaning hole 92. Specifically, the lower dust removal cover body 2 is fixed to the upper surface of the cleaning cover plate 9 by fixing screws.

[0044] The utility model adopts a cyclone design of several positive pressure air inlets 6 for blowing and a negative pressure air outlet 7 for sucking, so as to blow up the aluminum powder and eliminate the cleaning dead corners, thereby more effectively removing the aluminum powder and improving the welding yield rate of the sealing nails and the safety performance of the battery core; the original integrated dust cover is changed into a split and detachable type, and the upper dust cover body 1 can be conveniently removed from the lower dust cover body 2, so that it is convenient to disassemble and clean.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser cleaning and dust removal cover for a battery cell injection port, characterized in that: The utility model comprises an upper dust removal hood body and a lower dust removal hood body, wherein the upper dust removal hood body is detachably fixed on the lower dust removal hood body, and further comprises a laser cleaning channel which runs through the upper dust removal hood body and the lower dust removal hood body from top to bottom, a lower pipe opening convex downwardly is fixed at the lower end of the laser cleaning channel, a circle of grooves opened on the bottom surface of the lower dust removal hood body are arranged around the upper end of the lower pipe opening, at least two positive pressure air inlets leading to the grooves are arranged on the lower dust removal hood body, the airflow blown into the grooves by the positive pressure air inlet duct forms a cyclone airflow, and a negative pressure air outlet duct leading from the side to the laser cleaning channel is also arranged on the lower dust removal hood body.

2. The laser cleaning dust removal cover for the battery cell injection port according to claim 1, characterized in that: The lower dust removal cover is provided with a positioning installation groove for installing the upper dust removal cover. The upper dust removal cover is detachably installed on the lower dust removal cover through a plurality of knob bolts. The lower dust removal cover is provided with screw holes corresponding to the knob bolts.

3. The laser cleaning and dust removal cover for the battery cell injection port according to claim 1, characterized in that: The upper dust removal cover is a rectangular block, and the lower dust removal cover comprises an upper block and a lower fixing plate, and the upper block and the lower fixing plate are integrally formed.

4. The laser cleaning and dust removal cover for the battery cell injection port according to claim 1, characterized in that: The outer side surface of the lower pipe opening is a conical surface that is larger at the top and smaller at the bottom.

5. The laser cleaning and dust removal cover for the battery cell injection port according to claim 1, characterized in that: The groove is an annular groove, and the positive pressure air inlet passage leads into the annular groove from the side of the annular groove, and the positive pressure air inlet passage forms an angle with the radial direction of the annular groove.

6. The laser cleaning and dust removal cover for the battery cell injection port according to claim 1, characterized in that: The negative pressure air outlet channel is inclined downward and leads into the laser cleaning channel.

7. The laser cleaning and dust removal cover for the battery cell injection port according to claim 1, characterized in that: A joint connected to an air outlet pipe is fixed on the outer end of the negative pressure air outlet passage.

8. The laser cleaning and dust removal cover for the battery cell injection port according to claim 7, characterized in that: The joint comprises a fixing plate, an air outlet hole is formed on the fixing plate, an air outlet pipe is fixedly connected to the air outlet hole, the fixing plate is fixed to the lower dust removal cover body by a plurality of mounting screws, and the air outlet hole corresponds to the negative pressure air outlet duct.

9. The laser cleaning and dust removal cover for the battery cell injection port according to any one of claims 1 to 8, characterized in that: It also includes a cleaning cover fixed at the bottom of the lower dust removal hood body, a conical groove is provided on the upper surface of the cleaning cover, an air flow space is formed between the conical groove, the groove and the lower pipe mouth, a cleaning hole leading to the bottom surface of the cleaning cover is provided at the bottom of the conical groove, the cleaning hole corresponds to the laser cleaning channel, and a positioning ring is fixed at the bottom of the cleaning hole.

10. The laser cleaning and dust removal cover for the battery cell injection port according to claim 9, characterized in that: The lower dust removal cover is fixed to the upper surface of the cleaning cover plate by fixing screws.

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