Detection device for battery pole piece and detection system comprising detection device

Abstract

The utility model relates to a detection device for a battery pole piece, which comprises a working platform with a platform surface, a first moving mechanism arranged on the working platform and a clamping mechanism for the battery pole piece, the first moving mechanism can drive the clamping mechanism to move along a first direction parallel to the side edge of the battery pole piece in the clamping mechanism, and a reflector module is arranged on at least one side of the first moving mechanism close to the corresponding side edge of the battery pole piece. The detection device provided by the utility model is matched with an image detector for use, so that the detection of each position on the side edge of the battery pole piece and the detection of different pole piece edges and different types of burrs can be realized, and the detection device can avoid the manual adjustment of the position of the pole piece, thereby greatly reducing the workload of testers and improving the detection efficiency. And the detection efficiency and accuracy are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly to a detection device for battery electrodes and a detection system including the detection device. Background Art

[0002] During the manufacturing process of batteries, it is often necessary to use tools such as knives to cut battery electrodes into specified sizes to meet manufacturing requirements. During the electrode cutting process, due to various reasons such as the blade of the tool not being sharp enough, it is very easy to form burrs at the cutting edge of the electrode, and these burrs will pose great safety hazards to the battery, such as the risk of battery short circuit. In this context, the detection of burrs on battery electrodes has become an important detection item in battery production.

[0003] Since various burrs growing in different directions are easily formed at the edge during the cutting process of battery electrodes, the detection of the electrode needs to observe it from at least two directions: horizontal and vertical. One type of burr that extends roughly horizontally is the "plane burr" on the electrode edge. For this type of burr, it can be observed by directly facing the electrode plane with a detection instrument. Another type of burr that extends roughly vertically is the "section burr" on the electrode edge. For this type of burr, generally, the position of the electrode needs to be changed so that the detection instrument can directly observe the electrode section.

[0004] In the prior art, it is known to detect these two different types of burrs through a flipping mechanism or other displacement devices. However, after the size of the electrode becomes larger, the structural size of the clamping device for the electrode will correspondingly become larger, resulting in a significant reduction in the stability of the corresponding flipping mechanism. At the same time, it also causes the entire detection device or system to occupy a large space and results in low detection efficiency. In addition, when switching between observing plane burrs and section burrs, it is usually necessary to manually operate to rotate the clamping device, and fully automated detection cannot be achieved. If a motor is introduced to control the flipping of the electrode, the entire detection system will become bulky and complex, greatly increasing the manufacturing cost.

[0005] Therefore, it is necessary to propose a novel detection device or detection system for battery electrodes, especially for large-sized ones, so that it can overcome one or more of the above problems and / or other defects existing in the prior art. Summary of the Utility Model

[0006] The utility model is proposed based on such a background, and its purpose is to propose a detection device that can especially cooperate with a detection instrument (such as an image detection instrument, such as an optical microscope).

[0007] According to one aspect of the present utility model, there is provided a detection device for a battery electrode plate. The detection device includes a working platform having a platform surface, a first moving mechanism disposed on the working platform, and a clamping mechanism for the battery electrode plate. The first moving mechanism is capable of driving the clamping mechanism to move in a first direction parallel to the side edge of the battery electrode plate within the clamping mechanism. Wherein, a mirror module is disposed on at least one side of the first moving mechanism close to the corresponding side edge of the battery electrode plate.

[0008] As an embodiment, the mirror module includes a bracket fixed to the platform surface and a mirror support capable of moving in a vertical direction relative to the bracket. A mirror is carried on the mirror support.

[0009] As an embodiment, one of the bracket and the mirror support is provided with a guiding portion and the other is provided with a guiding groove capable of sliding in the vertical direction relative to the guiding portion.

[0010] As an embodiment, the mirror module is further provided with a protection device, which includes a protection cover for enclosing the bracket and the mirror support and a protection glass disposed on the protection cover above the mirror.

[0011] As an embodiment, the clamping mechanism includes a pallet and a pressing plate. The pallet is fixed to the first moving mechanism so as to be capable of moving following the first moving mechanism, and the pressing plate is pivotally connected to the pallet to be in an open position or a closed position relative to the pallet.

[0012] As an embodiment, at least one window is provided on the pressing plate.

[0013] As an embodiment, elastic members are provided at corresponding positions on the lateral edge of the pressing plate facing the pallet.

[0014] As an embodiment, a second moving mechanism is further provided on the working platform, which is intended to drive an image detector to move in a second direction perpendicular to the first direction but parallel to the platform surface to realize the detection of different side edges of the battery electrode plate.

[0015] According to a second aspect of the present utility model, there is provided a detection system for a battery electrode plate. The detection system includes an image detector and the detection device as described above.

[0016] As an embodiment, an illumination module is provided on the image detector. The illumination module provides illumination light at multiple angles, and a part of the illumination light is reflected by the mirror in the mirror module to the corresponding side of the clamping mechanism.

[0017] Compared with the prior art, by using the detection device or detection system according to the present utility model, at least one of the following technical effects can be achieved: due to the application of the large-stroke working platform, the detection of large-sized electrode sheets becomes possible; through different moving mechanisms capable of providing movement in two different directions, full-stroke detection of different side edges of the battery electrode sheet can be achieved; by using the mirror module arranged on the side of the clamping mechanism for the battery electrode sheet, the image detector can conveniently detect burrs from another viewing direction without the need for any flipping mechanism, which greatly improves the detection efficiency and accuracy, and thus facilitates the realization of a fully automated detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Through the following description with reference to the drawings, the above and other features and advantages of the present utility model will become more readily understood, wherein:

[0019] Figure 1 A schematic diagram showing the use of the detection device for battery electrode sheets in conjunction with an image detector (such as an optical microscope) according to a specific embodiment of the present utility model;

[0020] Figure 2 Showing included in Figure 1 A schematic diagram of the mirror module in the detection device;

[0021] Figure 3 Showing Figure 1 A schematic diagram of the detection device in

[0022] Figure 4 Showing the use of the detection device in Figure 2 A schematic diagram of the protection device for protecting the mirror module in

[0023] Figure 5 Is a schematic diagram of the clamping mechanism included in Figure 1 the detection device, wherein the pressing plate of the clamping mechanism is in an open position relative to the supporting plate of the clamping mechanism; and

[0024] Figure 6 Is a schematic diagram of the clamping mechanism included in Figure 1 the detection device, wherein the pressing plate of the clamping mechanism is in a closed position relative to the supporting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model to those skilled in the art. However, it is obvious to those skilled in the art that the implementation of the present utility model may not require some of these specific details. The following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims, unless expressly stated in the claims. In the following text, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish the various elements and are not intended to limit the nature, sequence, order, or number of these elements. Additionally, it should be noted that in this specification, the same and / or functionally identical technical features are denoted by the same or similar reference numerals.

[0026] In the above context, the present utility model provides an improved detection device for battery electrodes, which enables full-stroke detection of burrs in different directions on different side edges of large-size battery electrodes, and has high detection efficiency and accuracy, and can realize a fully automated detection process for battery electrodes.

[0027] Figure 1 The schematic diagram when the detection device for battery electrodes according to a specific embodiment of the present utility model is used in combination with an image detector (such as an optical microscope) is shown. As Figure 1 shown, the detection device 1 for battery electrodes includes a work platform 2 having a high-precision platform surface 21 and a first moving mechanism 3 arranged on the work platform 2. The first moving mechanism 3 can be in the form of a conveyor belt, which can drive the clamping mechanism 5 for the battery electrode 9 ( Figure 3 visible in) to linearly move, for example, move along Figure 1 the first direction A parallel to the side edge of the battery electrode 9 in, so that the entire stroke measurement of the side edge of the battery electrode can be realized by means of the image detector 7. Since the work platform 2 can provide a large movement stroke (such as a stroke of at least 500 mm), the detection device 1 can be applicable to the detection of burrs on battery electrodes with larger sizes.

[0028] If it is necessary to realize the detection of planar burrs and cross-sectional burrs growing in different directions mentioned in the background art section, the detection device 1 of the present utility model is advantageously integrated with a mirror module 6, which is arranged close to the corresponding side edges of the battery electrode 9 on at least one side of the first moving mechanism 3 (as Figure 1 shown as arranged on both sides in), and the mirror in the mirror module 6 (such as a 45° mirror) can be used to realize the detection of cross-sectional burrs growing in the vertical direction on the battery electrode 9. In this embodiment, a mirror module 6 is arranged on each of the two sides of the first moving mechanism 3 to facilitate the detection of cross-sectional burrs on the two different side edges of the battery electrode.

[0029] Specifically, see Figure 2 , which shows that included in Figure 1 Schematic diagram of a reflector module in a detection device in . The reflector module 6 includes a bracket 61 and a reflector support 62 that can move in a vertical direction relative to the bracket 61, and the reflector support 62 carries a reflector 63, which is preferably arranged to have a reflection angle of 45°. In the present embodiment, the bracket 61 is fixed to the high-precision platform surface 21 of the working platform 2 through its mounting portion. The mounting position of the bracket 61 can be determined by the positioning pins on the working platform 2. Of course, other positioning methods known in the art are also feasible, as long as the intended positioning function can be achieved.

[0030] In this specific embodiment, the bracket 61 is provided with a guide portion 611, and the reflector support 62 is provided with a guide groove 621, and the guide groove 621 can slide in the vertical direction relative to the guide portion 611. Of course, the opposite setting is also feasible, for example, the guide groove is provided on the bracket 61 and the guide portion is provided on the reflector support 62, as long as the reflector support can achieve the movement and adjustment of the reflector. After determining the optimal height position of the reflector 63, the reflector support 62 can be fixed to the bracket 61 by tightening screws.

[0031] As mentioned above, the reflector module 6 enables the cross-sectional burrs of the battery pole piece to be observed from the side. Figure 3 Shows Figure 1 The schematic diagram of the detection device in the figure is used in conjunction with the image detector 7 to detect cross-sectional burrs, which shows the relative positional relationship between the clamping mechanism 5, the image detector 7 and the reflector module 6. An illumination module 8 that is relatively fixed to the image detector 7 and can provide an annular light is provided on the image detector 7. The illumination light of multiple angles provided by the illumination module 8 illuminates the measured area, and part of the light will be reflected to the side of the clamping mechanism by the reflector 63, so the position of the reflector will affect the lighting environment of the measured area. Therefore, since the reflector 63 can be adjusted in the height direction with the help of the height-adjustable reflector support 62, a suitable height position can be found to provide the best state of imaging quality and contrast, thereby increasing the accuracy of algorithm detection.

[0032] In addition, if Figure 4 As shown, in order to protect the reflector 63 to reduce the cleaning frequency thereof and avoid interference of ambient light with the detection work, the reflector module 6 may further include a protective device, which includes a protective mask 64 for enclosing the bracket 61 and the reflector support 62 and a protective glass 65 arranged on the protective mask 64 and located above the reflector 63, wherein the protective glass 65 can be directly placed on and removed from the protective mask 64.

[0033] Return to Figure 1 The clamping mechanism 5 arranged on the first moving mechanism 3 is used to stably hold the battery electrode plate to facilitate the detection of burrs on the battery electrode plate by an image detector. Specifically, with reference to Figure 1 and Figure 5 , the clamping mechanism 5 includes a support plate 51 and a pressing plate 52. The support plate 51 is fixed to the first moving mechanism 3 (such as a conveyor belt) so that the support plate 51 and even the entire clamping mechanism 5 can move along with the first moving mechanism 3. The battery electrode plate 9 is placed on the support plate 51, and the pressing plate 52 can be pivotally connected to the support plate 51 by means of a pivot shaft 53 to be in an open position (see Figure 5 ) or a closed position (see Figure 6 ) relative to the support plate 51. A damping friction structure (not specifically shown in the figure) can be provided inside the pivot shaft 53, which helps to prevent the pressing plate 52 from quickly dropping after being lifted, performing a slow descent function.

[0034] Especially with reference to Figure 5 , the support plate 51 includes a lateral edge 511. Preferably, an elastic member 521, such as elastic foam, can be provided at a corresponding position on the pressing plate 52 facing the lateral edge 511 of the support plate 51. As shown in Figure 6 , the elastic member can squeeze the battery electrode plate 9 when the pressing plate 52 is closed relative to the support plate 51, thereby flattening the battery electrode plate on the support plate 51 and avoiding the influence of the bending of the battery electrode plate itself on the detection algorithm.

[0035] Advantageously, one or more windows 522 can be provided on the pressing plate 52. On the one hand, it can help reduce the weight of the entire clamping mechanism. On the other hand, these windows can avoid the generation of air pressure and adsorption phenomena when the pressing plate and the support plate are closed. In addition, it is also beneficial for the operator to finely adjust the position of the battery electrode plate placed in the clamping mechanism through these windows.

[0036] In addition, corresponding magnetic locking components (not specifically shown in the figure) can also be provided on the support plate 51 and the pressing plate 52 to complete the magnetic locking between the two when the pressing plate 52 is closed relative to the support plate 51. Of course, other locking methods known in the art are also feasible. In addition, Figure 5 also shows an operation window 523 provided on the pressing plate 52, which allows the operator to manipulate the pressing plate 52 through the operation window 523, thus providing better operation convenience.

[0037] In the detection system for battery electrodes according to the present utility model, it includes the detection device 1 as described above and an image detector 7 used in cooperation with the detection device. In order to enable the image detector 7 to detect different side edges of the battery electrode 9, a second moving mechanism 4 is further provided on the detection device 1 (see Figure 1 ), and the second moving mechanism 4 can drive the image detector 7 to move along a second direction B that is perpendicular to the first direction A but parallel to the surface 21 of the platform.

[0038] When the image detector 7 moves above the mirror module 6, the cross-section burrs of the battery electrode can be observed from the side direction through the mirror 63. In addition, the image detector 7 can also move directly above the edge of the battery electrode to directly observe the planar burrs. The switching between these two observation methods and the detection of multiple side edges of the battery electrode 9 can be conveniently achieved through the second moving mechanism 4 of the work platform 2.

[0039] Therefore, since the work platform 2 can provide two moving mechanisms that move in two mutually perpendicular directions, on the one hand, it can achieve the detection of each position on the side edge of the battery electrode 9 (i.e., full-stroke detection), and on the other hand, it can achieve the detection of different electrode edges and switch different observation methods for different types of burrs.

[0040] It can be seen that by using the detection device according to the present utility model in combination with an image detector, manual adjustment of the electrode position can be avoided, and only the electrode needs to be placed in the clamping mechanism, and the subsequent processes can all achieve fully automated detection, which greatly reduces the workload of the test personnel and significantly improves the detection efficiency and accuracy.

[0041] It should be noted that the embodiments described above should only be regarded as exemplary, and the present utility model is not limited to these embodiments. By considering the content of this specification, those skilled in the art can make various changes and modifications without departing from the scope or spirit of the present utility model. The true scope of the present utility model is defined by the appended claims and equivalent solutions.

Claims

1. A detection device for battery pole pieces, characterized in that: The detection device (1) comprises a working platform (2) having a platform surface (21), a first moving mechanism (3) arranged on the working platform (2), and a clamping mechanism (5) for a battery electrode (9), wherein the first moving mechanism (3) is capable of driving the clamping mechanism (5) to move along a first direction (A) parallel to a side edge of the battery electrode in the clamping mechanism, wherein a reflector module (6) is arranged on at least one side of the first moving mechanism (3) close to a corresponding side edge of the battery electrode (9).

2. The detection device according to claim 1, characterized in that: The reflector module (6) comprises a bracket (61) fixed to the platform surface (21) and a reflector support (62) movable in a vertical direction relative to the bracket (61), wherein a reflector (63) is carried on the reflector support (62).

3. The detection device according to claim 2, characterized in that: One of the bracket (61) and the reflector support (62) is provided with a guide portion and the other is provided with a guide groove capable of sliding in a vertical direction relative to the guide portion.

4. The detection device according to claim 2 or 3, characterized in that: The reflector module (6) is also provided with a protective device, which comprises a protective cover (64) for enclosing the bracket (61) and the reflector support (62) and a protective glass (65) arranged on the protective cover and located above the reflector (63).

5. The detection device according to any one of claims 1 to 3, characterized in that: The clamping mechanism (5) comprises a support plate (51) and a pressure plate (52), wherein the support plate is fixed to the first moving mechanism (3) so as to be able to move following the first moving mechanism, and the pressure plate (52) is pivotally connected to the support plate (51) so as to be in an open position or a closed position relative to the support plate.

6. The detection device according to claim 5, characterized in that: At least one window (522) is provided on the pressing plate (52).

7. The detection device according to claim 5, characterized in that: An elastic member (521) is provided at a corresponding position of the lateral edge (511) of the pressing plate (52) facing the supporting plate (51).

8. The detection device according to any one of claims 1 to 3, characterized in that: The working platform (2) is also provided with a second moving mechanism (4), which is intended to drive the image detector (7) to move along a second direction (B) perpendicular to the first direction (A) but parallel to the platform surface (21), so as to detect different side edges of the battery electrode (9).

9. A detection system for battery pole pieces, characterized in that: The detection system comprises an image detector (7) and a detection device (1) according to any one of claims 1 to 8.

10. The detection system according to claim 9, characterized in that: The image detector (7) is provided with an illumination module (8), which provides illumination light at multiple angles, and a portion of the illumination light is reflected to the corresponding side surface of the clamping mechanism (5) through a reflector in the reflector module.

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