Battery cell dust removal detection mechanism

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a battery cell dust removal detection mechanism which comprises a taking and placing device and a dust removal detection device, the taking and placing device is provided with a suction part, and a battery cell can be adsorbed on the suction part; the dust removal detection device comprises a dust removal part and a detection part; the dust removal part is opposite to the battery cell and can move along the length direction of the battery cell body to remove dust on the surface of the battery cell; and the detection part is arranged opposite to the battery cell and can move along with the dust removal part to perform motion photographing on the surface of the de-dusted battery cell so as to detect whether foreign matters on the surface of the de-dusted battery cell are qualified or not. The battery cell dust removal detection mechanism can effectively reduce the machine damage rate, reduce the battery cell test rejection rate, improve the production efficiency, improve the test rhythm and achieve the purposes of increasing the speed and improving the quality.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a battery cell dust removal detection mechanism. Background Art

[0002] As the market demand for lithium batteries increases, it is particularly important to improve the efficiency of battery production and reduce costs. The production capacity of lithium battery automated production lines also puts forward higher requirements. At present, in the manufacturing of short-blade batteries, due to the particularity of their size, structure and size, the production efficiency has always been low; the production efficiency of short-blade batteries of mainstream manufacturers is currently below 12PPM and the defective rate is high, making manufacturing more difficult. Therefore, improving the production efficiency and product yield of short-blade batteries is a difficult problem faced by the entire industry.

[0003] At present, most of the blade battery cell dust removal and inspection use a robot module to clamp and carry single or double-station loading and inspection. The dust removal port is fixed to the CCD camera, and the battery cell is moved in sections. Therefore, the battery cell has low production efficiency in this process, and the test time is long. At the same time, the linear module or conveyor belt has a slow speed and poor flexibility. In particular, the battery cell blocks a part of the dust removal surface in the clamp, causing a dust removal dead angle, which affects the dust removal and inspection effect, and secondly, debugging is troublesome. For a long time, the mechanical hand clamp has been cumbersome to grasp the battery cell, and the machine damage problem has caused great difficulties in the quality of the battery cell. At the same time, the slow test cycle is an important problem that affects the increase in production. Utility Model Content

[0004] The utility model provides a battery core dust removal detection mechanism, which is used to solve the problems of high machine damage rate and low intermittent detection productivity in the battery core grabbing process in the prior art.

[0005] In order to solve the above problems, the utility model provides a battery core dust removal detection mechanism, comprising:

[0006] The pick-and-place device has a suction portion, and the battery cell can be sucked onto the suction portion;

[0007] A dust removal detection device, comprising a dust removal part and a detection part;

[0008] The dust removal part is arranged opposite to the battery cell and can move along the length direction of the battery cell to remove dust from the surface of the battery cell;

[0009] The detection part is arranged opposite to the battery cell, and can take moving pictures of the surface of the battery cell after dust removal as the dust removal part moves, so as to detect whether the foreign matter on the surface of the battery cell after dust removal is qualified.

[0010] In some specific embodiments, the pick-and-place device includes,

[0011] A mounting bracket, wherein the suction part is arranged on the mounting bracket;

[0012] There is at least one suction part, which are parallel to each other, and the negative pressure air paths of the suction parts are independent of each other. Each suction part adsorbs a battery cell accordingly.

[0013] In some specific embodiments, the suction portion includes:

[0014] The suction cup mounting plate is fixedly connected to the mounting bracket;

[0015] The suction cup is connected to the negative pressure device and is evenly arranged on the suction cup mounting plate, and the adsorption surfaces are located on the same plane.

[0016] In some specific embodiments, the dust removal detection device includes:

[0017] A vertical plate extends along the width direction of the battery cell, the dust removal unit is arranged on one side of the vertical plate, and the detection unit is arranged on the other side of the vertical plate;

[0018] The first guide drive has a travel trajectory that is consistent with the length direction of the battery cell, and the vertical plate is installed on the first guide drive.

[0019] In some specific embodiments,

[0020] The detection part is a CCD camera, and the CCD camera is arranged in a one-to-one correspondence with the battery cell;

[0021] And / or, the dust removal part is a negative pressure dust collector, and the dust removal port of the negative pressure dust collector is arranged opposite to the battery cell.

[0022] In some specific embodiments, the dust removal detection device further includes:

[0023] First rack;

[0024] The first support frame has a lower end fixedly mounted on the upper end surface of the first frame and an upper end fixedly connected to the first guide drive.

[0025] In some specific embodiments, the dust removal detection device further includes a light source, which is disposed on the vertical plate and is used to illuminate the surface of the battery cell.

[0026] In some specific embodiments, a material discharge device is also included, and the material discharge device includes:

[0027] Battery cell jig, used to temporarily store unqualified battery cells;

[0028] The second guide drive, the battery cell fixture is installed on the second guide drive, and the unqualified battery cells can be transported to the manual processing area.

[0029] In some specific embodiments, the feeding device further comprises:

[0030] Second rack;

[0031] The second support frame has a lower end fixedly mounted on the upper end surface of the second frame and an upper end fixedly connected to the second guide drive.

[0032] In some specific embodiments, a transfer device is further included, and the pick-and-place device is disposed on the transfer device. Under the transportation of the transfer device, the pick-and-place device can place unqualified battery cells on a battery cell jig.

[0033] The beneficial effects of the utility model are as follows:

[0034] 1. The battery cell dust removal detection mechanism of the utility model can adsorb the battery cell on the adsorption part through the adsorption part of the pick-and-place device, which can effectively reduce the machine damage rate and improve the product yield compared with the mechanical gripper grabbing the battery cell in the prior art. At the same time, the surface of the battery cell adsorbed on the adsorption part by negative pressure is not blocked, avoiding the dust removal dead corner caused by the obstruction of the battery cell surface during the dust removal process.

[0035] 2. The battery cell dust removal detection mechanism of the utility model is provided with a movable dust removal part and a detection part. The dust removal part can move along the length direction of the battery cell to remove dust from the surface of the battery cell; the detection part can move synchronously with the dust removal part to take moving pictures of the battery cell surface after dust removal to detect whether the foreign matter on the surface of the battery cell after dust removal is qualified. Compared with the prior art in which the dust removal port is fixed to the CCD and the battery cell is moved in sections, it can effectively improve the test cycle, speed up and improve the quality, reduce the scrap of the battery cell test and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0038] Figure 2 It is a structural schematic diagram of a pick-and-place device;

[0039] Figure 3 It is a structural schematic diagram of a dust removal detection device;

[0040] Figure 4 It is a structural schematic diagram of the unloading device.

[0041] Figure markings: 100-pick-and-place device, 110-suction part, 111-suction cup mounting plate, 112-suction cup, 120-mounting bracket, 200-dust removal detection device, 210-dust removal part, 220-detection part, 230-vertical plate, 240-first guide drive, 250-first frame, 260-first support frame, 270-light source, 300-unloading device, 310-battery cell fixture, 320-second guide drive, 330-second frame, 340-second support frame, 400-transfer device, 410-robot arm, 420-moving part. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0043] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axis", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "join", "hinge" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] As the background technology shows, currently most of the blade battery cell dust removal and inspection uses a robot module to clamp and carry single or double-station loading and inspection, the dust removal port is fixed to the CCD camera, and the battery cell is moved in sections. The battery cell has low production efficiency and long testing time in this process. At the same time, the linear module or conveyor belt has a slow speed and poor flexibility. The battery cell has a dust removal blind spot in the clamp, which affects the dust removal and inspection effect.

[0048] In order to improve the above problems, this embodiment provides a battery cell dust removal detection mechanism, such as Figure 1-4 As shown, it includes a pick-up and placement device 100 and a dust removal detection device 200, wherein the pick-up and placement device 100 has a suction portion 110, which can adsorb the battery cell on the suction portion 110. The dust removal detection device 200 has a dust removal portion 210 and a detection portion 220. The dust removal portion 210 is arranged opposite to the battery cell and can move along the length direction of the battery cell to remove dust from the surface of the battery cell. The detection portion 220 is arranged opposite to the battery cell and can move with the dust removal portion 210 to take moving photos of the surface of the battery cell after dust removal, so as to detect whether the foreign matter on the surface of the battery cell after dust removal is qualified.

[0049] The battery cell is adsorbed onto the suction part 110 by the negative pressure of the suction part 110. The battery cell is located at the front side of the suction part 110. The suction part 110 will not block the battery cell, so that there is no dust removal dead angle in the subsequent dust removal process of the battery cell, and the dust removal effect is good. At the same time, there is no detection dead angle during detection, which ensures the comprehensiveness and accuracy of the detection. The dust removal part 210 and the detection part 220 are both set relative to the battery cell. When the dust removal part 210 moves along the length direction of the battery cell, the surface of the battery cell can be dusted. Since the battery cell is relatively long, the detection part 220 moves along the length direction of the battery cell, and the battery cell can be fully covered and detected. In the utility model, the dust removal part 210 and the detection part 220 are set to be synchronized, which can not only meet the requirements of dust removal and detection respectively, but also improve the production rhythm of the battery cell and increase speed and efficiency.

[0050] Specifically, in the exemplary embodiment, the pick-and-place device 100 includes a mounting bracket 120, and the suction part 110 is mounted on the mounting bracket 120. There is at least one suction part 110, and they are parallel to each other. The negative pressure air paths of each suction part 110 are independent of each other, and each suction part 110 adsorbs one battery cell. In this embodiment, four parallel suction parts 110 are used. The four suction parts 110 are parallel to each other and can adsorb four battery cells at a time. The dust removal part 210 and the detection part 220 can remove dust and detect four battery cells at the same time. The negative pressure air paths of the four parallel suction parts 110 are independent of each other, and after detecting unqualified battery cells, only unqualified battery cells can be released from the suction part 110 to the scrapping station.

[0051] Specifically, in the exemplary embodiment, the suction part 110 includes a suction cup mounting plate 111 and a suction cup 112, wherein the suction cup mounting plate 111 is fixedly connected to the mounting bracket 120 by bolts, and 3-6 suction cup positions are evenly distributed on the suction cup 112 mounting frame, and each suction cup position corresponds to a suction cup 112. The negative pressure air path of the suction cup 112 on the same suction cup mounting plate 111 remains consistent and is connected to the negative pressure device through a pipeline. The suction surfaces of each suction cup 112 are located on the same plane. When the battery cell is to be sucked, the suction surface of the suction cup 112 is a negative pressure environment, and each suction cup 112 jointly sucks a battery cell to the corresponding suction cup 112 mounting frame; when the corresponding battery cell is detected as an unqualified battery cell after dust removal, the suction surface of the suction cup 112 restores positive pressure, and the battery cell can fall off the suction cup 112 to the scrapping station. The suction of the battery cell by the suction cup 112 has a fast response speed and can achieve long-term maintenance-free.

[0052] Specifically, in the exemplary embodiment, the dust removal detection device 200 includes a vertical plate 230 and a first guide drive 240, and the vertical plate 230 extends along the width direction of the battery cell. The dust removal unit 210 is fixedly installed on one side of the vertical plate 230 by bolts, and the dust removal port is arranged along the width direction of the battery cell, which is used to remove dust from parallel arranged battery cells at the same time. The detection unit 220 is fixedly installed on the other side of the vertical plate 230 by bolts, arranged along the width direction of the battery cell, and is used to detect the battery cells after dust removal. The travel trajectory of the first guide drive 240 is consistent with the length direction of the battery cell. The vertical plate 230 is installed on the first guide drive 240. Under the drive of the first guide drive 240, the vertical plate 230 can move along the travel trajectory of the first guide drive 240, that is, it can move along the length direction of the battery cell. The dust removal unit 210 and the detection unit 220 move synchronously along the length direction of the battery cell with the vertical plate 230.

[0053] In this embodiment, the first guide drive 240 is a linear module, and the vertical plate 230 is installed on a slider on the linear module. The linear reciprocating motion of the slider can be achieved by rotating the lead screw driven by a motor, thereby driving the dust removal part 210 and the detection part 220 to perform linear reciprocating motion.

[0054] As an optional implementation, the first guide drive 240 may also be a motor drive and a linear guide rail cooperation structure or other structures capable of achieving linear movement.

[0055] Specifically, in the exemplary embodiment, the detection unit 220 is a CCD camera. Multiple CCD cameras can be arranged along the vertical plate 230. The number of CCD cameras corresponds to the number of battery cells. Each CCD camera is arranged relative to a battery cell. The CCD camera takes pictures of the surface of the battery cell. According to the current battery cell length and the CCD working range, one battery cell needs to be photographed three times. The CCD camera can convert the optical image into a digital signal and send it to the processor, so as to identify the chip with unqualified surface. The processor sends a command to the suction unit 110 corresponding to the unqualified chip to cut off the negative pressure channel of the suction cup 112 at this position, so that the unqualified chip falls off from this position to the scrapping station.

[0056] The dust removal unit 210 is a negative pressure dust collector, and the dust removal port of the negative pressure dust collector is arranged opposite to the battery cell. The negative pressure fan can form a dust removal negative pressure airflow at the dust removal port, and the dust and foreign matter on the surface of the battery cell are sucked in to achieve the purpose of dust removal. One dust removal port can remove dust from four battery cells at the same time, with high speed and efficiency.

[0057] Specifically, in the exemplary embodiment, a first frame 250 and a first support frame 260 are further included, wherein the first frame 250 is a frame body with a flat upper end and a support leg at the lower end, the lower end of the first support frame 260 is fixedly mounted on the upper end surface of the first frame 250, and the upper end of the first support frame 260 is fixedly connected to the first guide drive 240. It is used to support the dust detection device 200 so that the dust detection device 200 is located at a suitable height.

[0058] Specifically, in the exemplary embodiment, the dust removal detection device 200 also includes a light source 270, which is disposed on the vertical plate 230 and is used to illuminate the surface of the battery cell, provide stable lighting and a good photographing environment for the CCD camera, and improve the detection accuracy.

[0059] Specifically, in the exemplary embodiment, a material unloading device 300 is also included, and the material unloading device 300 includes a battery cell jig 310 and a second guide drive 320. The shape of the battery cell jig 310 is adapted to the battery cell, and the telecommunications jig is used to temporarily store unqualified battery cells. The battery cell jig 310 is installed on the second guide drive 320, and the battery cell jig 310 can be moved by the second guide drive 320, so that the unqualified battery cells on the battery cell jig 310 are transported to the manual processing area for manual inspection and confirmation.

[0060] In this embodiment, the second guide drive 320 is a linear module, and the battery fixture 310 is installed on a slider on the linear module. The linear reciprocating motion of the slider can be achieved by rotating the lead screw driven by a motor, thereby driving the battery fixture 310 to move linearly.

[0061] As an optional implementation, the second guide drive 320 may also be a motor drive and a linear guide rail cooperation structure or other structures capable of achieving linear movement.

[0062] Specifically, in the exemplary embodiment, a second frame 330 and a second support frame 340 are further included, wherein the lower end of the second support frame 340 is fixedly mounted on the upper end surface of the second frame 330, and the upper end of the second support frame 340 is fixedly connected to the second guide drive 320. The second support frame 340 is used to support the unloading device 300 so that the unloading device 300 is located at a suitable height.

[0063] Specifically, in the exemplary embodiment, a transfer device 400 is also included, and the pick-and-place device 100 is arranged on the transfer device 400. Under the transportation of the transfer device 400, the pick-and-place device 100 can place unqualified batteries on the battery fixture 310. The rotating device includes a mechanical arm 410 and a moving part 420, wherein the pick-and-place device 100 is installed on the mechanical arm 410, and the mechanical arm 410 can realize the position change of the chip on the vertical plane, such as flipping, so that the battery cell is in a horizontal position during dust removal. The moving part 420 adopts an intelligent robot, and by setting a preset walking route of the intelligent robot, the rapid transmission of the chip between the pick-and-place station and the unloading station is realized. The flexibility of the battery cell movement route is improved, and the debugging and maintenance efficiency of the equipment is greatly improved.

[0064] After the dust removal test of the battery cells is completed, the intelligent robot will send qualified batteries to the next station and unqualified batteries to the unloading station according to the preset route. The intelligent robot will reset, and a standard cycle will end.

[0065] The utility model can improve the existing 12PPM to 32PPM, and the yield rate can be increased from 75% to more than 85%, thereby achieving speed increase and quality improvement, reducing the scrapping of battery core testing and improving production efficiency.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "a specific embodiment" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A battery cell dust removal detection mechanism, characterized in that: include, A pick-and-place device, comprising a suction portion, on which the battery cell can be adsorbed; A dust removal detection device, comprising a dust removal part and a detection part; The dust removal part is arranged opposite to the battery cell and can move along the length direction of the battery cell to remove dust from the surface of the battery cell; The detection unit is arranged opposite to the battery cell, and can take moving photos of the surface of the battery cell after dust removal as the dust removal unit moves, so as to detect whether the foreign matter on the surface of the battery cell after dust removal is qualified.

2. The battery cell dust removal detection mechanism according to claim 1, characterized in that: The pick-and-place device comprises: A mounting bracket, wherein the suction portion is disposed on the mounting bracket; There is at least one suction part, which are parallel to each other. The negative pressure air paths of the suction parts are independent of each other, and each suction part adsorbs one battery cell.

3. The battery cell dust removal detection mechanism according to claim 2, characterized in that: The suction part includes: A suction cup mounting plate, fixedly connected to the mounting bracket; The suction cup is connected to the negative pressure device and is evenly arranged on the suction cup mounting plate, and the adsorption surfaces are located on the same plane.

4. The battery cell dust removal detection mechanism according to claim 1, characterized in that: The dust removal detection device comprises: A vertical plate extending along the width direction of the battery cell, the dust removal unit is arranged on one side of the vertical plate, and the detection unit is arranged on the other side of the vertical plate; The first guide drive has a travel trajectory that is consistent with the length direction of the battery cell, and the vertical plate is installed on the first guide drive.

5. The battery cell dust removal detection mechanism according to claim 4, characterized in that: The detection unit is a CCD camera, and the CCD camera is arranged in a one-to-one correspondence with the battery cell; And / or, the dust removal part is a negative pressure dust collector, and the dust removal port of the negative pressure dust collector is arranged opposite to the battery core.

6. The battery cell dust removal detection mechanism according to claim 4, characterized in that: Also includes, First rack; The first support frame has a lower end fixedly mounted on the upper end surface of the first frame and an upper end fixedly connected to the first guide drive.

7. The battery cell dust removal detection mechanism according to claim 4, characterized in that: The dust removal detection device also includes a light source, which is arranged on the vertical plate and is used to illuminate the surface of the battery cell.

8. The battery cell dust removal detection mechanism according to claim 1, characterized in that: It also includes a feeding device, the feeding device includes: Battery cell jig, used to temporarily store unqualified battery cells; The second guide drive, the battery cell fixture is installed on the second guide drive, and can transport the unqualified battery cells to the manual processing area.

9. The battery cell dust removal detection mechanism according to claim 8, characterized in that: Also includes, Second rack; The second support frame has a lower end fixedly mounted on the upper end surface of the second frame and an upper end fixedly connected to the second guide drive.

10. The battery cell dust removal detection mechanism according to claim 8, characterized in that: It also includes a transfer device, and the pick-up and placement device is arranged on the transfer device. Under the transportation of the transfer device, the pick-up and placement device can place unqualified battery cells on the battery cell fixture.

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