A dust removal mechanism inside a battery casing

Abstract

A dust removal mechanism for the inside of a battery casing includes a conveying mechanism. The conveying mechanism includes a support base plate for supporting the battery casing and a conveying channel disposed on the support base plate for conveying the battery casing. A dust removal mechanism is mounted on the support base plate, comprising a suction opening on the support base plate, a dust removal cylinder installed at the suction opening and flush with the support base plate, a suction pipe penetrating the center of the dust removal cylinder, and air blowing channels penetrating the dust removal cylinder and surrounding the suction pipe. The air blowing direction of the air blowing channels is set towards the inner wall of the battery casing. This invention enables comprehensive dust removal inside the battery casing without dead angles. The removed dust can be orderly sucked out through the suction pipe, preventing external dust from contaminating the inside of the battery casing, greatly improving the yield rate of finished batteries, and enhancing the durability and stability of the batteries.

Description

Technical Field

[0001] This invention relates to the field of battery processing technology, and in particular to a dust removal mechanism for the inside of a battery casing. Background Technology

[0002] Currently, in the manufacturing process of cylindrical lithium batteries, one step involves dust removal from the inner wall of the battery casing. This is necessary before components such as the positive electrode, negative electrode, separator, and electrolyte are placed inside the casing. If dust remains inside the casing, it will inevitably affect the overall performance of the battery and reduce the yield rate. However, current dust removal operations for the battery casing are mostly quite simple, merely involving blowing air into the casing through a nozzle. The disadvantage of this method is that it cannot remove dust from all sides of the inner wall of the battery casing, resulting in some dust residue. Furthermore, because the nozzle generates extremely high flow rates in a short period of time, it can also bring some external dust into the battery casing, causing contamination and leading to a decrease in the yield rate and unstable performance of the finished batteries. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the prior art by providing a dust removal mechanism inside a battery casing. The mechanism has multiple air blowing channels facing the inner wall of the battery casing and a suction pipe between the multiple air blowing channels. After the air is blown out of the air blowing channels, it extends along the side wall of the battery casing and rises to the top of the battery casing, and then flows to the suction pipe to be sucked out.

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows: This dust removal mechanism inside the battery casing includes a conveying mechanism, wherein the conveying mechanism includes a support base plate for supporting the battery casing and a conveying channel disposed on the support base plate for conveying the battery casing;

[0005] A dust removal mechanism is installed on the support base plate. The dust removal mechanism includes a dust suction opening on the support base plate, a dust suction cylinder installed at the dust suction opening and flush with the support base plate, a dust suction pipe that passes through the center of the dust suction cylinder, and an air blowing channel that passes through the dust suction cylinder and surrounds the dust suction pipe. The air blowing direction of the air blowing channel is set towards the inner wall of the battery casing.

[0006] To further improve the design, the suction pipe is rotatably connected to the center of the dust collection cylinder, the dust collection cylinder is rotatably connected to the suction opening, and the bottom of the dust collection cylinder is rotatably and sealed to an air intake cover that covers the air blowing channel. The suction pipe passes through and is rotatably and sealed to the center of the air intake cover. An air intake pipe is installed on the air intake cover, and a drive motor that drives the dust collection cylinder to rotate is installed on the support base plate.

[0007] To further improve the system, a pair of positioning side plates are provided on the top of the supporting base plate, and the conveying channel is formed between the pair of positioning side plates.

[0008] To further improve the design, a passive bevel gear is fixedly installed on the outside of the dust collector, and an active bevel gear that meshes with the passive bevel gear is fixedly installed on the output shaft of the drive motor.

[0009] To further improve the design, the diameter of the passive bevel gear is larger than the diameter of the active bevel gear.

[0010] Further improvements include making the suction opening circular with a diameter smaller than the inner diameter of the battery casing.

[0011] Further improvements include the air blowing channel being divided into a straight section and a bent section that are interconnected. The bottom of the straight section is connected to the air intake hood, one end of the bent section is connected to the top of the straight section, and the other end of the bent section faces the inner wall of the battery casing.

[0012] To further improve the design, the number of air blowing channels is three or more.

[0013] The beneficial effects of this invention are: it can achieve all-round dust removal inside the battery casing without dead angles, and the removed dust can be orderly sucked out through the suction pipe, thus avoiding external dust from contaminating the inside of the battery casing, greatly improving the yield of finished battery products, and enhancing the durability and stability of the battery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 This is a three-dimensional view of the conveying mechanism in this invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Conveying mechanism; 1-1. Support base plate; 1-2. Conveying channel; 1-3. Positioning side plate; 2. Dust removal mechanism; 2-1. Dust suction opening; 2-2. Dust collection cylinder; 2-3. Dust suction pipe; 2-4. Air blowing channel; 2-4-1. Straight section; 2-4-2. Bending section; 2-5. Air inlet hood; 2-6. Air inlet pipe; 2-7. Drive motor; 3. Passive bevel gear; 4. Active bevel gear. Detailed Implementation

[0018] The following describes preferred embodiments of the present invention in conjunction with the accompanying drawings. These are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

[0019] See attached document Figures 1-3In this embodiment, the internal dust removal mechanism of the battery casing includes a conveying mechanism 1. The conveying mechanism 1 includes a support base plate 1-1 for supporting the battery casing and a conveying channel 1-2 disposed on the support base plate 1-1 for conveying the battery casing. The conveying channel 1-2 is arranged along the direction of the support base plate 1-1. The front and rear ends and the top of the conveying channel 1-2 are open for entering and exiting the battery casing. A pair of positioning side plates 1-3 are provided on the top of the support base plate 1-1, and the conveying channel 1-2 is formed between the pair of positioning side plates 1-2.

[0020] A dust removal mechanism 2 is installed on the supporting base plate 1-1. The dust removal mechanism 2 includes...

[0021] A suction opening 2-1 is formed on the support base plate 1-1. The suction opening 2-1 is circular and its diameter is smaller than the inner diameter of the battery casing. The suction opening 2-1 can be set individually or in multiples. If there are multiple suction openings 2-1, the center distance between adjacent suction openings 2-1 is the same as the center distance between the two battery casings.

[0022] The upper part is installed at the dust collection opening 2-1. The dust collection cylinder 2-2 is cylindrical. The top of the dust collection cylinder 2-2 is flush with the top of the support base plate 1-1 to prevent obstruction of battery transportation.

[0023] A suction pipe 2-3 is installed inside the dust collection cylinder 2-2 and runs through the center. The top of the suction pipe 2-3 is flush with the top of the support plate 1-1 to prevent obstruction of battery transportation. The suction pipe 2-3 is used to absorb the airflow that accumulates in the middle of the battery casing.

[0024] An air blowing channel 2-4 is provided through the dust removal cylinder 2-2 and distributed around the suction pipe 2-3; the airflow is blown out from the air blowing channel 2-4 to the inner wall of the battery casing to remove dust. The airflow rises along the inner wall of the battery casing to the top of the battery casing and is obstructed. After the airflow is obstructed, it gathers in the middle of the inside of the battery casing and then moves down to the suction pipe 2-3 to be sucked out.

[0025] The blowing direction of the air blowing channel 2-4 is set towards the inner wall of the battery casing. There are more than three air blowing channels 2-4. One end of the air blowing channel 2-4 is set to be in an inclined state so as to guide the airflow towards the inner wall of the battery casing.

[0026] See attached document Figures 1-3The suction pipe 2-3 is rotatably connected to the center of the dust collection cylinder 2-2, which is rotatably connected to the suction opening 2-1. The bottom of the dust collection cylinder 2-2 is rotatably and sealed with an air intake hood 2-5 that covers the air blowing channel 2-4. The suction pipe 2-3 passes through and is rotatably and sealed to the center of the air intake hood 2-5. An air intake pipe 2-6 is installed on the air intake hood 2-5. A drive motor 2-7, which rotates the dust collection cylinder 2-2, is installed on the support base plate 1-1. High-pressure gas is introduced into the air intake hood 2-5 through the air intake pipe 2-6, and the air intake hood 2-5 delivers the gas into the air blowing channel 2-4.

[0027] See attached document Figures 1-3 A passive bevel gear 3 is fixed to the outside of the dust collector 2-2. A driving bevel gear 4, which meshes with the passive bevel gear 3, is fixedly installed on the output shaft of the drive motor 2-7. The diameter of the passive bevel gear 3 is larger than the diameter of the driving bevel gear 4. The drive motor drives the dust collector 2-2 to rotate through the passive bevel gear 3 and the driving bevel gear 4. The rotation of the dust collector 2-2 drives the dust collection channel 2-4 to rotate. The gas sprayed from the dust collection channel 2-4 can evenly sweep across the inner wall of the battery casing, thereby performing all-round dust removal inside the battery casing.

[0028] See attached document Figures 1-3 The air blowing channel 2-4 is divided into a straight section 2-4-1 and a bent section 2-4-2 that are connected to each other. The bottom of the straight section 2-4-1 is connected to the air intake hood 2-5, and one end of the bent section 2-4-2 is connected to the top of the straight section 2-4-1. The other end of the bent section 2-4-2 faces the inner wall of the battery housing. An arc-shaped transition is provided at the connection between the bent section 2-4-2 and the straight section 2-4-1 to facilitate the smooth passage of airflow. Alternatively, the air blowing channel 2-4 can also be set in an inclined state facing the inner wall of the battery housing as a whole.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dust removal mechanism for the inside of a battery casing, comprising a conveying mechanism (1), the conveying mechanism (1) comprising a support base plate (1-1) for supporting the battery casing, and a conveying channel (1-2) disposed on the support base plate (1-1) for conveying the battery casing; characterized in that: A dust removal mechanism (2) is installed on the supporting base plate (1-1). The dust removal mechanism (2) includes a dust suction opening (2-1) opened on the supporting base plate (1-1), a dust removal cylinder (2-2) installed at the dust suction opening (2-1) and flush with the supporting base plate (1-1), a dust suction pipe (2-3) passing through the center of the dust removal cylinder (2-2), and an air blowing channel (2-4) passing through the dust removal cylinder (2-2) and distributed around the dust suction pipe (2-3). The air blowing direction of the air blowing channel (2-4) is set towards the inner wall of the battery casing. The dust suction pipe (2-3) is rotatably connected to the center of the dust removal cylinder (2-2). (2-2) Rotatably connected to the dust suction opening (2-1), the bottom of the dust collection cylinder (2-2) is sealed and rotatably connected to an air intake hood (2-5) covering the air blowing channel (2-4), the dust suction pipe (2-3) passes through and is sealed and rotatably connected to the center of the air intake hood (2-5), the air intake hood (2-5) is equipped with an air intake pipe (2-6), and the support base plate (1-1) is equipped with a drive motor (2-7) that drives the dust collection cylinder (2-2) to rotate; a passive bevel gear (3) is fixedly installed on the outside of the dust collection cylinder (2-2), and an active bevel gear (4) that meshes with the passive bevel gear (3) is fixedly installed on the output shaft of the drive motor (2-7).

2. The dust removal mechanism inside the battery casing according to claim 1, characterized in that: The diameter of the passive bevel gear (3) is greater than the diameter of the active bevel gear (4).

3. The dust removal mechanism inside the battery casing according to claim 1, characterized in that: The air blowing channel (2-4) is divided into a straight section (2-4-1) and a bent section (2-4-2) that are connected to each other. The bottom of the straight section (2-4-1) is connected to the air intake hood (2-5). One end of the bent section (2-4-2) is connected to the top of the straight section (2-4-1), and the other end of the bent section (2-4-2) faces the inner wall of the battery casing.

4. The dust removal mechanism inside the battery casing according to claim 3, characterized in that: The number of the air blowing channels (2-4) is more than three.

5. The dust removal mechanism inside the battery casing according to claim 1, characterized in that: The suction opening (2-1) is circular and its diameter is smaller than the inner diameter of the battery casing.

6. The dust removal mechanism inside the battery casing according to claim 1, characterized in that: The top of the supporting base plate (1-1) is provided with a pair of positioning side plates (1-3), and the conveying channel (1-2) is formed between the pair of positioning side plates (1-3).

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