CN216563258U

CN216563258U - Automatic hole sealing line for lithium battery

Info

Publication number: CN216563258U
Application number: CN202122187654.8U
Authority: CN
Inventors: 马寅; 吴田
Original assignee: Nanjing Ascent Automatic Equipment Co ltd
Current assignee: Nanjing Ascent Automatic Equipment Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-05-17
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to an automatic hole sealing line for a lithium battery, which comprises a first welding unit, a second welding unit, a detection unit and a defective sorting unit which are sequentially arranged. The first blocking limiting unit, the second blocking limiting unit and the third blocking limiting unit are respectively matched with the first welding unit, the second welding unit and the detection unit. The first lifting tool, the second lifting tool and the third lifting tool are respectively matched with the first welding unit, the second welding unit and the detection unit. The application of the first lifting tool is taken as an example for explanation, when the lithium battery packaging frame is conveyed to the first welding station, and the first stopping limiting unit finishes the limiting operation on the lithium battery packaging frame, the first lifting tool lifts the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor, so that the lithium battery pack is kept in a completely horizontal state, a correct height position is provided, and the first welding, the second welding and the detection operation can be smoothly performed.

Description

Automatic hole sealing line for lithium battery

Technical Field

The utility model relates to the technical field of lithium battery manufacturing, in particular to an automatic hole sealing line for a lithium battery.

Background

In the production stage of the lithium battery, electrolyte needs to be injected into the lithium battery, and then the electrolyte injection hole is sealed by laser. Each lithium battery is placed in the material frame and carried by the conveying line, and two welding procedures (respectively a front positioning welding procedure and a rear fixing welding procedure) and one detection procedure need to be carried out in the process.

At present, a conveyor is commonly used for conveying the lithium battery packing frame. The carrier roller or the ball directly contacted with the lithium battery packaging frame is inevitably worn under the action of friction force, and the wear loss is gradually increased along with the extension of application time, so that the reduction of the relative height position of the lithium battery packaging frame is influenced; when the abrasion loss of each area of the carrier roller or the ball is inconsistent, the lithium battery pack frame is easy to incline, namely the posture of the lithium battery pack is inconsistent with the expectation, so that on one hand, the adverse effect on the implementation of the first welding procedure and the second welding procedure is inevitably caused, the welding point position and the forming shape cannot meet the inspection standard, and the liquid injection hole cannot be blocked; on the other hand, when the lithium battery pack is deviated and inclined relative to the height position, the definition of an image shot by the visual module in the detection process is caused, the subsequent image processing speed is further reduced, the difficulty of picking the lithium battery pack is greatly increased when the lithium battery pack inclines, and the lithium battery pack cannot be quickly detected and picked due to the combination of the two factors. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above-mentioned problems and drawbacks, the present invention provides a method for automatically sealing a hole of a lithium battery, which comprises collecting relevant data, evaluating and considering the relevant data, and continuously performing experiments and modifications by a technician engaged in research and development for many years.

In order to solve the technical problem, the utility model relates to an automatic hole sealing line for a lithium battery, which comprises a conveyor, a first welding unit, a second welding unit, a detection unit, a defective sorting unit, a first blocking limiting unit, a second blocking limiting unit and a third blocking limiting unit. The first welding unit, the second welding unit, the detection unit and the defective sorting unit are sequentially arranged along the upstream direction and the downstream direction and are uniformly distributed right above the conveyor. The first blocking limiting unit, the second blocking limiting unit and the third blocking limiting unit are respectively matched with the first welding unit, the second welding unit and the detection unit in a one-to-one correspondence mode, and cooperate with each other to pause the conveying process of the lithium battery packaging frame flowing through each station. The automatic hole sealing line of the lithium battery further comprises a first lifting tool, a second lifting tool and a third lifting tool. The first lifting tool, the second lifting tool and the third lifting tool are uniformly distributed under the conveyor and are respectively matched with the first welding unit, the second welding unit and the detection unit in a one-to-one correspondence mode for application. When the lithium battery packaging frame is conveyed to the first welding station and the first blocking limiting unit finishes limiting operation on the lithium battery packaging frame, the first lifting tool acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor; when the lithium battery packaging frame is conveyed to the second welding station, and after the second stopping limiting unit finishes limiting operation on the lithium battery packaging frame, the second lifting tool acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor. When the lithium battery packaging frame is conveyed to the detection station, and after the third stopping limiting unit finishes limiting operation on the lithium battery packaging frame, the third lifting tool acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor.

As a further improvement of the technical scheme of the utility model, the first lifting tool, the second lifting tool and the third lifting tool are the same in design structure. Only for the first lifting tool, the first lifting tool comprises a bottom plate, a supporting column, a top supporting plate, a sliding sleeve and a linear motion element. The top supporting plate is used for directly supporting the lithium battery packing frame and is arranged right above the bottom plate in parallel. The quantity of support column is established to a plurality ofly, and is the equipartition attitude and inserts and join in marriage on the bottom plate. The number of the sliding sleeves is consistent with that of the supporting columns, and the sliding sleeves are embedded on the supporting plate in an evenly distributed manner. When the top supporting plate performs displacement movement towards/away from the bottom plate, the sliding sleeve always slides along the supporting column matched with the sliding sleeve. Assume that the distance between the bottom plate and the top plate is d. When the linear motion element is started, d is changed along with the linear motion element until the lithium battery packaging frame is completely separated from the conveyor.

As a further improvement of the technical solution of the present invention, the first blocking and limiting unit, the second blocking and limiting unit, and the third blocking and limiting unit have the same design structure. Only for the third blocking limit unit, the third blocking limit unit comprises a bearing plate and a blocking cylinder. The bearing plate is in a flat state and is fixed on the conveyor; the blocking cylinder is detachably fixed on the bearing plate, and correspondingly, an avoiding notch matched with the appearance of the blocking cylinder is formed in the bearing plate.

As a further improvement of the technical scheme of the utility model, the linear motion element is preferably an air cylinder, a hydraulic cylinder or a linear motor.

As a further improvement of the technical scheme of the utility model, only for the first lifting tool, the first lifting tool further comprises a left limiting column and a right limiting column. The left-placed limiting column and the right-placed limiting column are vertically inserted and matched on the supporting plate, and correspondingly, a left-placed limiting hole matched with the left-placed limiting column and a right-placed limiting hole matched with the right-placed limiting column are respectively formed in the bottom wall of the lithium battery packaging frame.

As a further improvement of the technical scheme of the utility model, the left limiting column and the left limiting hole and the right limiting column and the right limiting hole are in clearance fit, and the fit tolerance is G7/h 6.

Compared with the automatic hole sealing line of the lithium battery with the traditional design structure, in the technical scheme disclosed by the utility model, the automatic hole sealing line is additionally provided with the first lifting tool, the second lifting tool and the third lifting tool so as to be respectively adapted to the first welding unit, the second welding unit and the detection unit in a one-to-one correspondence manner. When the lithium battery pack is at a first welding station, a second welding station and a detection station in sequence, the lithium battery pack is stopped in place, the first lifting tool, the second lifting tool and the third lifting tool independently act to lift the lithium battery material frame until the lithium battery material frame is separated from the conveyor, the lithium battery pack is ensured to be kept in a complete horizontal state and has a correct height position, the follow-up first-time welding is facilitated, the second welding is smooth and can be executed with high quality, the welding spot is ensured to have an accurate forming position and a good forming shape, in addition, the imaging definition of a detection unit is facilitated, the difficulty degree of processing of follow-up images is further reduced, and the detection speed and accuracy are finally improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of an automatic hole sealing line of a lithium battery according to the present invention.

Fig. 2 is a schematic perspective view of another view of the automatic hole sealing line of the lithium battery of the present invention.

Fig. 3 is an enlarged view of part I of fig. 2.

Fig. 4 is a schematic diagram of a relative position relationship between a first blocking limiting unit and a first lifting tool in the automatic hole sealing line of the lithium battery.

Fig. 5 is a diagram of a practical application state of the first lifting tool in the automatic hole sealing line of the lithium battery (the lithium battery packaging frame is in a separation state relative to the supporting plate).

Fig. 6 is a schematic perspective view of a first lifting tool in an automatic hole sealing line of a lithium battery according to the present invention.

Fig. 7 is a front view of fig. 6.

1-a conveyor; 2-a first welding unit; 3-a second welding unit; 4-a detection unit; 5-defective sorting unit; 6-a first blocking and limiting unit; 7-a second blocking and limiting unit; 8-a third blocking and limiting unit; 81-bearing plate; 82-a blocking cylinder; 9-a first lifting tool; 91-a base plate; 92-support column; 93-a carrier plate; 94-a sliding sleeve; 95-a cylinder; 96-left limit column; 97-right position limit post; 10-a second lifting tool; 11-third lifting tool.

Detailed Description

In the description of the present invention, it is to be understood that the terms "front", "rear", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The following describes the content of the present invention in further detail with reference to specific embodiments, and fig. 1 and fig. 2 respectively show three-dimensional schematic diagrams of two different viewing angles of an automatic hole sealing line for a lithium battery according to the present invention, it can be seen that the automatic hole sealing line for a lithium battery mainly comprises a conveyor 1, a first welding unit 2, a second welding unit 3, a detection unit 4, a defective sorting unit 5, a first blocking and limiting unit 6, a second blocking and limiting unit 7, a third blocking and limiting unit 8, a first lifting tool 9, a second lifting tool 10, a third lifting tool 11, and the like. The first welding unit 2, the second welding unit 3, the detection unit 4 and the defective sorting unit 5 are sequentially arranged along the upstream direction and the downstream direction and are uniformly arranged right above the conveyor 1. The first blocking limiting unit 6, the second blocking limiting unit 7 and the third blocking limiting unit 8 are respectively matched with the first welding unit 2, the second welding unit 3 and the detection unit 4 in a one-to-one correspondence mode, and the conveying process of the lithium battery packing frame flowing through each station is suspended under the synergistic effect. The first lifting tool 9, the second lifting tool 10 and the third lifting tool 11 are uniformly distributed under the conveyor 1, and are respectively matched with the first welding unit 2, the second welding unit 3 and the detection unit 4 in a one-to-one correspondence manner for application so as to lift the lithium battery material frame from the conveyor 1.

The working principle of the automatic hole sealing line of the lithium battery is as follows: firstly, a lithium battery packaging frame is conveyed to a first welding station, a first blocking limiting unit 6 acts to complete limiting operation on the lithium battery packaging frame, then a first lifting tool 9 acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from a conveyor 1, and then a first welding unit 2 acts to complete primary positioning welding on a lithium battery pack; the lithium battery packaging frame continues to rotate under the action of the conveying force of the conveyor 1 until reaching a second welding station, the second blocking limiting unit 7 acts to complete limiting operation on the lithium battery packaging frame, then the second lifting tool 10 acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor 1, and then the second welding unit 2 acts to complete fixed welding on the lithium battery package, and finally plugging of a liquid injection hole is achieved; lithium cell package material frame continues the circulation under the effect of conveyer 1 conveying force, until after detecting the station, and the third blocks spacing unit 8 and accomplishes the spacing operation to lithium cell package material frame, then, the third lifts frock 11 and takes place the action in order to hold up lithium cell package material frame, break away from mutually with conveyer 1 until lithium cell package material frame, detecting element 4 takes place the action in order to absorb lithium cell package welding area image, borrow image processor in order to handle the image that absorbs, the analysis, judge whether welding point position and shaping shape satisfy the quality control standard on the lithium cell package. When the lithium battery pack is judged as a defective product, the defective sorting unit 5 acts to sort it into the waste bin in real time.

Through adopting above-mentioned technical scheme to set up, the automatic hole line that seals of lithium cell gains the following advantage in several aspects at least in practical application, and the concrete presentation is in: when the lithium battery pack stops in place at the first welding station, the second welding station and the detection station in sequence, the first lifting tool 9, the second lifting tool 10 and the third lifting tool 11 independently act to lift the lithium battery material frame until the lithium battery material frame is separated from the conveyor 1, the lithium battery pack is ensured to be kept in a complete horizontal state and has a correct height position, the follow-up first welding is facilitated, the second welding can be smoothly and highly-qualitatively executed, the welding spot is ensured to have an accurate forming position and a good forming shape, in addition, the imaging definition of the detection unit is facilitated, the processing difficulty of follow-up images is further reduced, and the detection speed and accuracy are finally improved.

As shown in fig. 2, the first lifting tool 9, the second lifting tool 10 and the third lifting tool 11 have the same design structure. For the sake of economy, only the first lifting tool 9 is described in detail herein, and is mainly composed of a bottom plate 91, a supporting column 92, a top plate 93, a sliding sleeve 94, and an air cylinder 95. The supporting plate 93 is used for directly supporting the lithium battery packaging frame and is arranged in parallel right above the bottom plate 91. The number of the supporting columns 92 is set to 4, and the supporting columns are inserted and matched on the bottom plate 91 in an evenly distributed manner. The number of the sliding sleeves 94 is the same as that of the supporting columns 92, and the sliding sleeves are embedded on the supporting plate 93 in an evenly distributed manner (as shown in fig. 4, 5, 6 and 7). When welding or detection operation needs to be performed on the lithium battery pack, the air cylinder 95 is started to drive the supporting plate 93 to perform displacement movement back to the bottom plate 91, and meanwhile, the sliding sleeve 94 always slides along the supporting column 92 matched with the sliding sleeve 94 until the lithium battery material frame is separated from the conveyor 1; after the welding or detection operation is completed on the lithium battery pack, the air cylinder 95 is started again, and the supporting plate 93 carries out displacement movement back to the bottom plate 91 until the lithium battery material frame is attached to the conveyor 1, so that the circulation process is continuously executed.

It should be noted that, in addition to the above-mentioned air cylinder 95, other linear motion elements such as a hydraulic cylinder, a linear motor, etc. may be selected according to different requirements of practical application scenarios and thrust.

In addition, as shown in fig. 2, the first blocking and limiting unit 6, the second blocking and limiting unit 7 and the third blocking and limiting unit 8 have the same design structure. For reasons of economy, the third stopper limiting unit 8, which includes the bearing plate 81 and the stopper cylinder 82, is described in detail only. The bearing plate 81 is in a flat state and is fixed on the conveyor 1; the blocking cylinder 82 is detachably fixed on the bearing plate 81, and correspondingly, an avoiding notch (as shown in fig. 3) matched with the shape of the blocking cylinder 82 is formed in the bearing plate 81. The blocking cylinder 82 is an integral outsourcing member and is used for blocking the movement of the lithium battery packaging frame, so that the lithium battery packaging frame is positioned at a correct position. When compressed air enters the blocking cylinder 82 through the control valve, the piston of the blocking cylinder drives the stop lever to descend, and the blocked lithium battery packing frame is released. When the control valve is deflated, the piston is reset under the action of the spring, so that the next lithium battery packing frame is blocked.

In addition, as shown in fig. 5, 6, and 7, the first lifting tool 9 further includes a left position-limiting column 96 and a right position-limiting column 97. The left-placed limiting column 96 and the right-placed limiting column 97 are vertically inserted and matched on the upper surface of the top supporting plate 93, and correspondingly, a left-placed limiting hole matched with the left-placed limiting column 96 and a right-placed limiting hole matched with the right-placed limiting column 97 are respectively formed in the bottom wall of the lithium battery packaging frame. And the left position limiting column 96 and the left position limiting hole and the right position limiting column 97 and the right position limiting hole are in clearance fit, and the fit tolerance is G7/h 6. The first welding station is taken as an example for explanation, after the lithium battery packaging frame is transferred to the position under the first welding unit 2, the first stop limiting unit 8 acts to complete the first limiting operation on the lithium battery packaging frame, and then the first lifting tool 9 acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor 1, meanwhile, the left limiting column 96 and the right limiting column 97 are respectively inserted into the left limiting hole and the right limiting hole in a one-to-one correspondence manner, so that accurate positioning of the lithium battery packaging frame is ensured, and good bedding is made for improving the relative position accuracy of subsequent generated welding spots.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic hole sealing line for lithium batteries comprises a conveyor, a first welding unit, a second welding unit, a detection unit, a defective sorting unit, a first blocking limiting unit, a second blocking limiting unit and a third blocking limiting unit; the first welding unit, the second welding unit, the detection unit and the defective sorting unit are sequentially arranged along the upstream direction and the downstream direction and are uniformly distributed right above the conveyor; the first blocking limiting unit, the second blocking limiting unit and the third blocking limiting unit are respectively matched with the first welding unit, the second welding unit and the detection unit in a one-to-one correspondence mode, and cooperate with each other to pause the conveying process of the lithium battery wrapping frame flowing through each station; the first lifting tool, the second lifting tool and the third lifting tool are uniformly distributed under the conveyor and are respectively matched with the first welding unit, the second welding unit and the detection unit in a one-to-one correspondence manner for use; when the lithium battery packaging frame is conveyed to a first welding station, and the first blocking limiting unit finishes limiting operation on the lithium battery packaging frame, the first lifting tool acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor; when the lithium battery packaging frame is conveyed to a second welding station and the second blocking limiting unit finishes limiting operation on the lithium battery packaging frame, the second lifting tool acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor; when the lithium battery packaging frame is conveyed to the detection station, and after the third stopping limiting unit completes limiting operation on the lithium battery packaging frame, the third lifting tool acts to lift the lithium battery packaging frame until the lithium battery packaging frame is separated from the conveyor.

2. The automatic hole sealing line for the lithium battery as claimed in claim 1, wherein the first lifting tool, the second lifting tool and the third lifting tool are designed to have the same structure; only aiming at the first lifting tool, the first lifting tool comprises a bottom plate, a supporting column, a top supporting plate, a sliding sleeve and a linear motion element; the top supporting plate is used for directly supporting the lithium battery packing frame and is arranged right above the bottom plate in parallel; the number of the supporting columns is multiple, and the supporting columns are uniformly distributed and inserted on the bottom plate; the number of the sliding sleeves is consistent with that of the supporting columns, and the sliding sleeves are embedded on the supporting plate in a uniformly distributed manner; when the top supporting plate performs displacement movement towards/away from the bottom plate, the sliding sleeve always slides along the supporting column matched with the sliding sleeve; assuming that the distance between the bottom plate and the top plate is d; when the linear motion element is started, d is changed along with the linear motion element until the lithium battery packaging frame is completely separated from the conveyor.

3. The automatic hole sealing line for the lithium battery as claimed in claim 2, wherein the first blocking and limiting unit, the second blocking and limiting unit and the third blocking and limiting unit have the same design structure; only for the third blocking limit unit, the third blocking limit unit comprises a bearing plate and a blocking cylinder; the bearing plate is horizontally arranged and is fixed on the conveyor; the blocking cylinder is detachably fixed on the bearing plate, and correspondingly, an avoiding notch matched with the blocking cylinder in shape is formed in the bearing plate.

4. The automatic hole sealing line for lithium batteries according to claim 2, wherein the linear motion element is a cylinder, a hydraulic cylinder or a linear motor.

5. The automatic hole sealing line for the lithium battery as claimed in any one of claims 2 to 4, wherein the automatic hole sealing line for the lithium battery only aims at the first lifting tool, and further comprises a left limiting column and a right limiting column; the left limiting column and the right limiting column are vertically inserted and matched on the supporting plate, and correspondingly, a left limiting hole matched with the left limiting column and a right limiting hole matched with the right limiting column are respectively formed in the bottom wall of the lithium battery packaging frame.

6. The automatic hole sealing line for the lithium battery as claimed in claim 5, wherein the left position-limiting post and the left position-limiting hole and the right position-limiting post and the right position-limiting hole are in clearance fit, and the fit tolerance is G7/h 6.