WO2019148435A1 - Dispositif et système de détection de plaque d'électrode de batterie, machine d'empilement de plaques d'électrode et procédé d'empilement - Google Patents

Dispositif et système de détection de plaque d'électrode de batterie, machine d'empilement de plaques d'électrode et procédé d'empilement Download PDF

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Publication number
WO2019148435A1
WO2019148435A1 PCT/CN2018/075000 CN2018075000W WO2019148435A1 WO 2019148435 A1 WO2019148435 A1 WO 2019148435A1 CN 2018075000 W CN2018075000 W CN 2018075000W WO 2019148435 A1 WO2019148435 A1 WO 2019148435A1
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WO
WIPO (PCT)
Prior art keywords
battery pole
pole piece
battery
image
electrode sheet
Prior art date
Application number
PCT/CN2018/075000
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English (en)
Chinese (zh)
Inventor
余玉英
Original Assignee
深圳前海优容科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳前海优容科技有限公司 filed Critical 深圳前海优容科技有限公司
Priority to PCT/CN2018/075000 priority Critical patent/WO2019148435A1/fr
Publication of WO2019148435A1 publication Critical patent/WO2019148435A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis

Definitions

  • the present invention relates to the field of battery manufacturing, and in particular to a battery pole piece detecting device, system, laminating machine and method.
  • One of the core manufacturing processes of lithium batteries is a lamination process.
  • negative (positive) pole pieces, diaphragms, positive (negative) pole pieces, diaphragms, negative (positive) are stacked from bottom to top.
  • a pole piece, a diaphragm, a positive (negative) pole piece, etc. wherein there is a certain requirement for the relative positional relationship between the positive and negative electrode sheets disposed adjacent to each other, for example, the projection of the positive electrode sheet in the stacking direction is in the negative electrode sheet In the region, the projection of the negative electrode tab in the stacking direction is in the region of the separator.
  • the technical problem to be solved by the present invention is to provide a battery pole piece detecting device, system, laminating machine and method, which can solve the problem that the current pole piece detecting method cannot improve the battery pass rate due to post-mortem inspection.
  • a technical solution adopted by the present invention is to provide a battery pole piece detecting device, comprising: a light source for illuminating a battery pole piece; and an image acquiring device for acquiring the battery under the light source An image of the pole piece; a detection circuit coupled to the image acquisition device for processing the image of the battery pole piece, and obtaining the relative positions of the two battery pole pieces disposed adjacent to each other; the feedback circuit coupled to the detection circuit for phase separation The relative positions of the two battery pole pieces disposed adjacent to each other are fed back to the laminating machine, so that the laminating machine adjusts the position of the battery pole pieces in real time according to the relative position.
  • another technical solution adopted by the present invention is to provide a battery pole piece detecting system including at least the battery pole piece detecting device as described above.
  • another technical solution adopted by the present invention is to provide a laminating machine comprising at least the battery pole piece detecting device as described above.
  • a battery pole piece detecting method comprising: acquiring an image of a battery pole piece; processing an image of the battery pole piece, and acquiring two batteries arranged adjacent to each other; The relative position of the pole pieces; the relative positions of the two battery pole pieces arranged adjacent to each other are fed back to the laminating machine, so that the laminating machine adjusts the position of the battery pole pieces in real time according to the relative position.
  • the beneficial effects of the present invention are different from the prior art.
  • the relative positions of the two battery pole pieces disposed adjacent to each other can be obtained. And the relative position is fed back to the laminating machine, so that the laminating machine can adjust the position of the battery pole piece in real time according to the relative position, thereby realizing adjusting the stacked battery poles in real time during the stacking of the battery pole pieces.
  • the position of the sheet can be such that the positional relationship between the adjacent stacked battery pole pieces conforms to the process requirements, and finally the battery yield can be improved.
  • FIG. 1 is a schematic structural view of a first embodiment of a battery pole piece detecting device of the present invention
  • FIG. 2 is a schematic diagram of an application scenario of the battery pole piece detecting device shown in FIG. 1;
  • FIG. 3 is a schematic diagram of another application scenario of the battery pole piece detecting device shown in FIG. 1;
  • FIG. 4 is a schematic structural view of a second embodiment of a battery pole piece detecting device of the present invention.
  • FIG. 5 is a schematic diagram of an application scenario of the battery pole piece detecting device shown in FIG. 4;
  • FIG. 5 is a schematic diagram of an application scenario of the battery pole piece detecting device shown in FIG. 4;
  • FIG. 6 is a schematic structural view of a third embodiment of a battery pole piece detecting device of the present invention.
  • FIG. 7 is a schematic structural view of a first embodiment of a battery pole piece detecting system of the present invention.
  • Figure 8 is a schematic structural view of a second embodiment of the battery pole piece detecting system of the present invention.
  • FIG. 9 is a schematic structural view of a third embodiment of a battery pole piece detecting system of the present invention.
  • Figure 10 is a schematic structural view of an embodiment of the lamination machine of the present invention.
  • FIG. 11 is a schematic flow chart of an embodiment of a method for detecting a pole piece of a battery according to the present invention.
  • step S102 is a schematic flow chart of the first sub-step of step S102 in FIG. 11;
  • FIG. 13 is a schematic flow chart of a sub-step before step S102 in FIG. 11;
  • FIG. 14 is a schematic flow chart of the second sub-step of step S102 and one sub-step of step S103 in FIG.
  • the first embodiment 10 of the battery pole piece detecting device of the present invention comprises:
  • An image obtaining device 101 configured to acquire an image of a battery pole piece
  • the image acquisition device 101 includes, but is not limited to, a camera (such as a 3D camera, an RGB-D camera, a laser camera, etc.).
  • a camera such as a 3D camera, an RGB-D camera, a laser camera, etc.
  • the image obtaining device 101 may be a depth camera, such as a 3D camera, capturing a three-dimensional image of the battery pole piece 201 every time a battery pole piece 201 is stacked, and The three-dimensional image is saved or directly uploaded to the detection circuit 102 for subsequent image processing.
  • the battery pole piece 201 may be a positive electrode sheet unit 201a or a negative electrode sheet 201b.
  • the positive electrode sheet unit 201a includes a positive electrode sheet and a separator.
  • the battery pole piece 201 may also be a positive electrode sheet or a negative electrode sheet unit.
  • the negative electrode sheet and the separator that is, the positive/negative electrode sheet may be stacked in advance with the separator as a unit, and then stacked on the other negative/positive sheet, or the battery sheet 201 may be a positive electrode unit or a negative electrode unit.
  • the negative electrode sheet, the separator, and the positive electrode sheet are left adjacent to each other, or the positive electrode sheet, the separator, and the negative electrode sheet are stacked adjacent to each other.
  • the image acquisition device may be periodically recalibrated to reduce the influence of the drift phenomenon during use on the accuracy.
  • the image acquisition device may also include at least two cameras that capture battery pole pieces from different angles, such as one camera for panning the battery pole piece and the other camera for shooting.
  • the side of the battery pole piece to obtain a three-dimensional image of the battery pole piece.
  • it is necessary to unify the coordinates of the camera for example, to associate the position data of each camera to the same world coordinates to avoid errors due to uncoordinated coordinates.
  • the light source 104 is configured to illuminate the battery pole piece such that the image acquiring device 101 acquires an image of the battery pole piece under the illumination of the light source 104, so that the outline of the battery pole piece is conspicuous, and the image recognition accuracy due to the battery pole piece stacking is avoided. decline.
  • the light source 104 may include at least one of a top light source, a backlight, and a side light source.
  • the specific light source may be set according to actual needs, such as a white light or a monochromatic light, which is not specifically limited herein.
  • a top light source 104a, a backlight 104b, and a side light source 104c are disposed on the periphery of the battery pole piece 201 placement area, wherein the top light source 104a is used in the opposite direction along the Z axis.
  • Light is emitted to the battery pole piece 201, and the backlight 104b is for emitting light to the battery pole piece 201 in the Z-axis direction, and the side light source 104c is for emitting light to the battery pole piece 201 in a direction perpendicular to the Z-axis.
  • the top light source 104a, the backlight 104b, and the side light source 104c are all coupled to the image acquiring device 101, and the image capturing device can be made by using the selective switch top light source 104a, the backlight 104b, and the side light source 104c, that is, matching different light effects.
  • the outline of the battery pole piece 201 is clearer, thereby facilitating the recognition of the position of the battery pole piece 201 in subsequent image processing.
  • the switching time of the top light source 104a, the backlight 104b, and the side light source 104c may be a preset fixed period, or there may be one control circuit (not shown), which is controlled according to the interval of the acquired image by the image acquiring device 101.
  • the switch of the light source, the specific switching time depends on the actual needs, and is not specifically limited here.
  • the detecting circuit 102 is coupled to the image obtaining device 101 for processing an image of the battery pole piece and acquiring the relative positions of the two battery pole pieces disposed adjacent to each other;
  • the relative positions of the two stacked battery pole pieces disposed adjacent ly comprise the positional relationship of the two battery pole pieces disposed adjacent to each other in a horizontal plane (the XY plane in FIG. 2), and in a plane perpendicular to the horizontal plane.
  • the positional relationship in the direction (the Z-axis direction in Fig. 2).
  • the detecting circuit 102 acquires an image of the currently placed battery pole piece 201 from the image acquiring device 101, that is, acquires a three-dimensional image of the battery pole piece 201, and uses image recognition.
  • the technology recognizes two battery pole pieces 201 disposed adjacent to each other in the image, and calculates the two adjacent stacked layers by using the data of the identified battery pole pieces (such as pole piece width, thickness, center position coordinates, etc.)
  • the relative positional relationship between the sheet pole pieces 201 e.g., relative offset distance or angle.
  • the contours of the positive electrode sheet unit 201a and the negative electrode sheet 201b disposed adjacent to each other in the image are identified by edge detection, so that the relative positional relationship (such as the size difference) of the positive electrode sheet unit 201a and the negative electrode sheet in the XY plane can be obtained.
  • the center position coordinate offset distance and angle, etc., and using the depth data between the positive electrode sheet unit 201a and the negative electrode sheet 201b in the image the positional relationship of the positive electrode sheet unit 201a and the negative electrode sheet 201b in the Z-axis direction is calculated.
  • the illumination angle and the image acquisition angle may be adjusted by adjusting the posture of the light source and/or the image acquisition device to obtain multiple images for processing, thereby facilitating more accurate identification of the contour and position of the battery pole piece.
  • the detection circuit 102 is further configured to identify the contour of the battery pole piece 201 to determine the position of the battery pole piece 201 in the image.
  • the detecting circuit 102 is further configured to compare the positions of the two battery pole pieces 201 disposed adjacent to each other in the image to obtain the relative positions of the two battery pole pieces 201 disposed adjacent to each other.
  • an edge detection algorithm such as a differential operator method may be utilized. , a template matching method, a wavelet detection method, a neural network method, etc., identifying the contour of the battery pole piece 201 in the image, thereby determining the position of the battery pole piece 201 in the image, for example, the range of the area surrounded by the outline as the battery
  • the position of the pole piece 201 in the image may be calibrated by using a coordinate set or the like, and the coordinate may be a coordinate in the coordinate system of the detection circuit 102 or the image acquisition device 101 itself, or may be a coordinate in a unified world coordinate system. limited.
  • the image of the battery pole piece 201 acquired by the detecting circuit 102 may be a three-dimensional image or a two-dimensional image.
  • the detection circuit 102 can directly perform image processing using the acquired three-dimensional image, such as image segmentation, edge detection, etc., to identify the edges of the two battery pole pieces 201 disposed adjacent to each other.
  • image processing such as image segmentation, edge detection, etc.
  • the relative positional relationship between the two for example, using the vertex coordinates of the positive electrode sheet unit 201a and the negative electrode sheet 201b, respectively, obtain the range of the region surrounded by the projection points of the vertices of the XY plane, and the vertices of the two are on the Z axis. The distance between the projected points.
  • the detection circuit 102 can determine the relative positions of the two battery pole pieces 201 disposed adjacent to each other by using a plurality of two-dimensional images, for example, the adjacent positions acquired by the image acquisition device 101 at the same time.
  • a top view image and a side view image of the positive electrode sheet unit 201a and the negative electrode sheet 201b which are stacked and arranged, and the relative position of the positive electrode sheet unit 201a and the negative electrode sheet 201b in the XY plane can be obtained by using the plan view image, and the positive electrode can be obtained by using the side view image
  • the relative positions of the sheet unit 201a and the negative electrode sheet 201b in the Z-axis direction such as the distance between the two battery sheets described above and/or the thickness of the two battery sheets.
  • the position of the negative electrode sheet 201b in the image can be determined by the plan view image, and the top view image of the positive electrode sheet unit 201a disposed adjacent to the stack can be used to acquire the The position of the positive electrode sheet unit 201a in the image, so that the positions of the positive electrode sheet unit 201a and the negative electrode sheet 201b in the image can be compared, and the relative positions of the two battery electrode sheets in the XY plane can be obtained.
  • the above two top view images are taken at the same angle by the same image acquisition device.
  • a reference object 202 may be disposed on the operating platform of the lamination machine outside the area where the battery pole piece 201 is placed, and within the image acquisition range of the image capturing device.
  • the detection circuit 102 can directly compare the position of the battery pole piece 201 and the reference object 202 in the image to obtain the battery pole piece 201 and each time the image of the battery pole piece 201 is acquired.
  • the relative positions between the reference objects 202 are then compared, and the relative positions between the two battery pole pieces 201 and the reference object 202 disposed adjacent to each other are compared to obtain the relative positions of the two battery pole pieces 201 disposed adjacent to each other.
  • the initially placed battery pole piece can also be used as the reference, and the position of the initially placed battery pole piece can be used as the position of the reference object for subsequent position comparison.
  • the fixed reference material for position comparison it is possible to avoid the influence of the positional variation of the image acquisition device and the light source on the position of the battery pole piece in the image.
  • the positions of the positive electrode sheet unit 201a and the reference object 202 in the image, and the positions of the negative electrode sheet 201b and the reference object 202 in the image are respectively compared, and the positive electrode sheet unit 201a and the reference object 202 can be respectively obtained.
  • the relative position, and the relative position between the negative electrode tab 201b and the reference material 202, and then comparing the two relative positions between the positive electrode sheet unit 201a and the negative electrode sheet 201b and the reference material 202, the adjacent stacked positions can be obtained.
  • the position and the relative position may be represented by a coordinate set and/or a vector.
  • the feedback circuit 103 is coupled to the detecting circuit 102 for feeding back the relative positions of the two stacked battery pole pieces disposed adjacent to each other to the laminating machine 20, so that the laminating machine 20 adjusts the pendulum of the battery pole piece in real time according to the relative position. Put the position.
  • the feedback circuit 103 obtains the relative positional relationship between the two battery pole pieces 201 disposed adjacent to each other in the stacking circuit 102, and then feeds back to the laminator 20, and the laminator 20 determines the currently placed battery. Whether the position of the pole piece 201 meets the process requirement, that is, whether the relative position between the two battery pole pieces 201 disposed adjacent to each other is within a preset range, and the preset range is adjacent to the battery pole piece process requirement.
  • the relative position between the stacked battery pole pieces for example, the projection of the positive electrode sheet in the stacking direction is in the region of the negative electrode sheet, and the projection of the negative electrode sheet in the stacking direction is in the region of the separator, or the center of the positive electrode sheet and the negative electrode
  • the center of the film and the center of the diaphragm are on the same line.
  • the specific value of the preset range can be set by the user or automatically recognized by the battery type, which is not specifically limited herein.
  • the relative position between the two battery pole pieces 201 is within the preset range.
  • the laminator 20 can adjust the position of the battery pole piece 201 according to the relative position each time the battery pole piece 201 is placed, and finally all the battery pole pieces in the entire battery can meet the process requirements, and further Improve the pass rate of the battery.
  • the feedback circuit 103 can also directly determine whether the position of the currently placed battery pole piece 201 meets the process requirements, and set the adjacent stack when the position of the battery pole piece 201 does not meet the process requirements. The relative positional relationship of the two battery pole pieces 201 is fed back to the laminator 20, and the lamination machine 20 adjusts the position of the currently placed battery pole piece 201 in real time. In addition, the feedback circuit 103 can also feed back the unqualified battery pole piece 201 to the laminator 20, so that the laminator 20 discards the unqualified battery pole piece 201, thereby further improving the battery yield.
  • the image acquisition device may employ a conventional camera to slap the battery pole piece and combine a distance measuring device to obtain a relative position between two battery pole pieces disposed adjacent to each other.
  • the second embodiment 40 of the battery pole piece detecting device of the present invention is similar to the first embodiment of the battery pole piece detecting device of the present invention in FIG. 1, except that the battery pole piece detecting device of the present invention is different.
  • 40 further includes: a distance measuring device 105 coupled to the detecting circuit 102 for measuring a distance between at least two battery pole pieces placed adjacent to each other.
  • the ranging device 105 includes, but is not limited to, a laser, a grating, an infrared range finder, and an ultrasonic range finder. This embodiment is described by taking a laser as an example.
  • the image acquisition device 101 employs a general industrial camera, and overtakes the battery pole piece 201, stacking one battery pole piece 201 at a time, and at least one image is taken and combined.
  • the laser 105 emits laser light perpendicular to the battery pole piece 201 to the battery pole piece 201. Since the laser light can penetrate the battery pole piece 201 and reflect light, thereby measuring by laser ranging principle, such as laser triangulation, The distance between at least two battery pole pieces 201 placed adjacently stacked, as in the distance between the positive electrode sheet unit 201a and the negative electrode sheet 201b in FIG.
  • the distance may be the sum of the thicknesses of the positive electrode sheet unit 201a and the negative electrode sheet 201b, and may also include the thickness of the positive electrode sheet unit 201a and the thickness of the negative electrode sheet 201b, depending on the ranging accuracy of the laser 105 and actual needs. , there is no specific limit here.
  • the ranging device can also be integrated with the image acquisition device.
  • the detecting circuit 102 After the detecting circuit 102 acquires the image of the battery pole piece and the distance between the at least two battery pole pieces, the image of the battery pole piece is processed, and at least two battery pole pieces placed adjacent to each other are obtained on the first plane.
  • a first relative position wherein the first plane is perpendicular to a stacking direction of the battery pole pieces, such as a first relative position of the positive electrode sheet unit 201a and the negative electrode sheet 201b shown in FIG.
  • the at least two sheets are utilized a distance between the battery pole pieces, obtaining a second relative position of the at least two battery pole pieces in a direction perpendicular to the first plane, such as the second of the positive electrode sheet unit 201a and the negative electrode sheet 201b in the Z-axis direction in FIG. relative position.
  • a second relative position of the at least two battery pole pieces in a direction perpendicular to the first plane such as the second of the positive electrode sheet unit 201a and the negative electrode sheet 201b in the Z-axis direction in FIG. relative position.
  • the first relative position and the second relative position reference may be made to the content of the first embodiment of the battery pole piece detecting device of the present invention, which is not repeated here.
  • the second relative position needs to be associated with the coordinates unified with the image acquiring device to avoid errors caused by the coordinate inconsistency.
  • the ranging device can also directly acquire second relative position data between two adjacent battery pole pieces.
  • the battery pole piece detecting device may further establish a three-dimensional model according to the relative positional relationship of the at least two battery pole pieces disposed in the adjacent stack, and reconstruct the three-dimensional structure of the battery pole piece to more intuitively Determine if the stack of battery pole pieces meets the process requirements.
  • the third embodiment 50 of the battery pole piece detecting device of the present invention is similar to the second embodiment of the battery pole piece detecting device of the present invention in FIG. 4, except that the battery pole piece detecting device of the present invention is different.
  • the method further includes: a three-dimensional modeling circuit 106 coupled to the detecting circuit 102, configured to establish a three-dimensional model of the at least two battery pole pieces by using a first relative position and a second relative position between the at least two battery pole pieces To obtain the relative position between the currently placed battery pole piece and the battery pole piece disposed adjacent to it.
  • the three-dimensional modeling circuit 106 can obtain between the currently stacked battery pole pieces and the adjacent stacked battery pole pieces from the detecting circuit 102 each time a battery pole piece is stacked. a first relative position and a second relative position, and then the first relative position and the second relative position can be utilized to establish a three-dimensional model of the currently stacked battery pole piece and its adjacent stacked battery pole pieces, and can be utilized.
  • the color, shape and the like of the battery pole piece in the image render the three-dimensional model such that the three-dimensional model is closer to the real battery pole piece structure, and the three-dimensional model can more easily and intuitively acquire the currently placed battery pole piece and
  • the three-dimensional structure of the battery pole piece of the entire battery can be reconstructed.
  • the three-dimensional modeling circuit 106 can also analyze the position deviation of the multi-layer battery pole piece projected onto the same plane in the three-dimensional model, draw a deviation curve, and also view the cross-section of the multi-layer battery pole piece in the three-dimensional model. In order to obtain the position data of the battery pole piece more intuitively.
  • the feedback circuit 103 is coupled to the detection circuit 102 through the three-dimensional modeling circuit 106.
  • the feedback circuit 103 is further configured to feed back the relative position between the currently placed battery pole piece and the battery pole piece disposed adjacent to the laminated layer to the lamination machine. In order to make the laminator adjust the position of the currently placed battery pole piece in real time according to the relative position.
  • the three-dimensional modeling circuit can also be used for a standard model established according to a user input process parameter, which is a model of a battery pole stack stacked in accordance with a battery lamination process requirement, and the three-dimensional modeling circuit can Comparing the three-dimensional model of the battery pole piece established in real time with the standard model, and obtaining the current relative position between the currently placed battery pole piece and the battery pole piece stacked adjacent thereto and two pieces of adjacent stacking in the standard model The deviation of the standard relative position between the battery pole pieces, and feedback the deviation to the feedback circuit, which is fed back to the laminator by the feedback circuit to adjust the position of the currently placed battery pole piece in real time.
  • the three-dimensional modeling circuit can also be integrated in the detection circuit to implement the above functions using the modeling algorithm in the detection circuit.
  • the first embodiment 60 of the battery pole piece detecting system of the present invention includes at least: a battery pole piece detecting device 601, and the structure of the battery pole piece detecting device 601 can refer to the first to the second battery detecting device of the present invention.
  • the structure of any of the three embodiments is not repeated here.
  • the image of the obtained battery pole piece is processed by the battery pole piece detecting device, and the relative positions of the two battery pole pieces disposed adjacent to each other are obtained, and the relative position is fed back to the laminating machine.
  • the laminating machine adjusts the position of the battery pole piece in real time according to the relative position, thereby realizing adjusting the position of the stacked battery pole piece in real time during the process of stacking the battery pole piece, thereby enabling the adjacent stacked battery to be arranged.
  • the positional relationship between the pole pieces meets the process requirements, and ultimately the battery yield can be improved.
  • the second embodiment 70 of the battery pole piece detecting system of the present invention comprises: a battery pole piece detecting device 601 and a laminating machine 602.
  • the structure of the battery pole piece detecting device 601 can refer to the battery pole piece detecting device of the present invention.
  • the structure of any one of the first to third embodiments will not be repeated here.
  • the structure of the battery pole piece detecting device 601 in this embodiment is described by taking the structure of the first embodiment of the battery pole piece detecting device of the present invention as an example.
  • the laminating machine 602 is coupled to the feedback circuit 103 of the battery pole piece detecting device 601 for real-time adjustment of the currently placed battery pole piece according to the relative position between the two battery pole pieces disposed adjacent to the feedback circuit 103.
  • the position is placed such that the currently placed battery pole piece is placed in a preset position.
  • the preset position is a preset position of the currently placed battery pole piece that meets the process requirements.
  • the lamination machine 602 after the lamination machine 602 obtains the relative position between two battery pole pieces disposed adjacent to each other from the feedback circuit 103, it can be determined whether the relative position meets the process requirement, for example, whether the relative position is In a preset range, the preset range is a positional relationship between the two battery pole pieces arranged in an adjacent stack that meets the requirements of the battery pole stacking process. When the relative position does not meet the process requirements, if the relative position exceeds the When the range is preset, the laminator 602 adjusts the placement position of the currently placed battery pole piece in real time so that the currently placed battery pole piece is placed at the preset position.
  • the laminating machine can repeat the above process each time a battery pole piece is stacked, so that the finally formed battery pole piece structure can meet the process requirements and improve the battery qualification rate.
  • the third embodiment 80 of the battery pole piece detecting system of the present invention comprises: a battery pole piece detecting device 601 and a laminating machine 602.
  • the structure of the battery pole piece detecting device 601 can refer to the battery pole piece detecting device of the present invention.
  • the structure of any one of the first to third embodiments will not be repeated here.
  • the structure of the battery pole piece detecting device 601 in this embodiment is described by taking the structure of the first embodiment of the battery pole piece detecting device of the present invention as an example.
  • the laminating machine 602 includes a lamination control circuit 6021 coupled to the feedback circuit 103 for determining whether a relative position between the currently placed battery pole piece and the battery pole piece disposed adjacent to the battery pole is greater than a preset range. And when the relative position is greater than the preset range, the control lamination mechanism 6023 adjusts the placement position of the battery pole piece in real time, so that the currently placed battery pole piece is placed in the preset position; wherein the lamination mechanism 6023 is coupled The lamination control circuit 6021.
  • the preset position is a preset position of the currently placed battery pole piece meeting the process requirement
  • the preset range is the two battery pole pieces arranged in an adjacent stacking manner meeting the requirements of the battery pole piece stacking process. The positional relationship between.
  • the lamination machine 602 further includes an operating platform 6022 for placing a battery pole piece.
  • the laminator 602 further includes a lamination mechanism 6023 for acquiring the battery pole pieces and laminating the battery pole pieces on the operation platform 6022.
  • the lamination mechanism 6023 can be fixedly disposed on the operating platform 6022.
  • the lamination mechanism 6023 can include a structure such as a mechanical gripper or a vacuum chuck for acquiring a battery pole piece and moving the battery pole piece to the stacking area. Place it.
  • a reference object 202 is fixedly disposed on the operating platform 6022.
  • the reference object 202 is disposed in the image acquisition range of the image capturing device 101 and outside the placement area of the battery pole piece.
  • the process of processing the image of the battery pole piece by the detecting circuit 102 by using the reference object 202 can refer to the content of the first embodiment of the battery pole piece detecting device of the present invention, which is not repeated here.
  • the battery pole piece detection system can also include a transfer mechanism for transporting the battery pole piece.
  • the battery pole piece detecting device can also be integrated in the laminator.
  • an embodiment 90 of the lamination machine of the present invention includes a battery pole piece detecting device 901.
  • the structure of the battery pole piece detecting device 901 can refer to the structure of any one of the first to third embodiments of the battery pole piece detecting device of the present invention, and will not be repeated here.
  • the laminator 90 may further include other components such as a transport mechanism, an operating platform, a reference, and a lamination mechanism, which are not specifically limited herein.
  • the lamination machine processes the image of the obtained battery pole piece by using the battery pole piece detecting device, and can obtain the relative positions of the two battery pole pieces disposed adjacent to each other, and adjust the battery pole according to the relative position in real time.
  • an embodiment of the battery pole piece detecting method of the present invention includes:
  • S102 processing an image of the battery pole piece, and acquiring a relative position of two battery pole pieces disposed adjacent to each other;
  • the position of the battery pole piece in the image can be determined by identifying the contour of the battery pole piece, and then the position of the two battery pole pieces disposed adjacent to each other in the image can be used. The relative positions of the two battery pole pieces disposed adjacent to each other are determined.
  • step S102 further includes:
  • S1021 Compare the positions of the two battery pole pieces disposed adjacent to each other in the image, or compare the relative positions between the two battery pole pieces disposed adjacent to each other to the reference material to obtain two batteries arranged adjacent to each other. The relative position of the pole pieces.
  • the method further includes:
  • S1011 Measure the distance between at least two battery pole pieces placed adjacent to each other.
  • the distance between at least two battery pole pieces placed adjacent to each other can be measured by using a device such as a laser, an infrared range finder, an ultrasonic range finder or a grating.
  • a device such as a laser, an infrared range finder, an ultrasonic range finder or a grating.
  • a laser can be used to emit a laser perpendicular to the battery pole piece to the battery pole piece to measure the distance between at least two battery pole pieces placed adjacent to each other.
  • step S102 further includes:
  • S1022 processing an image of the battery pole piece, acquiring a first relative position of at least two battery pole pieces placed adjacent to each other on a first plane, and obtaining at least two pieces by using a distance between at least two battery pole pieces a second relative position of the battery pole piece in a direction perpendicular to the first plane; wherein the first plane is perpendicular to the stacking direction of the battery pole piece.
  • step S102 further includes:
  • S1023 Using the first relative position and the second relative position, establishing a three-dimensional model of at least two battery pole pieces to obtain a relative position between the currently placed battery pole piece and the battery pole piece disposed adjacent thereto.
  • Step S103 further includes:
  • S1031 feeding back the relative position between the currently placed battery pole piece and the battery pole piece disposed adjacent to the laminated layer to the laminating machine, so that the laminating machine adjusts the placement of the currently placed battery pole piece in real time according to the relative position. position.

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  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
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Abstract

L'invention concerne un dispositif (10) permettant de détecter une plaque d'électrode de batterie, une machine d'empilement de plaques d'électrode de système (20) et un procédé d'empilement. Le dispositif (10) de détection d'une plaque d'électrode de batterie comprend : une source de lumière (104), permettant d'éclairer une plaque d'électrode de batterie (201) ; un dispositif de capture d'image (101) permettant de capturer une image de la plaque d'électrode de batterie (201) sous l'éclairage de la source de lumière (104) ; un circuit de détection (102), couplé au dispositif de capture d'image (101), permettant de traiter l'image de la plaque d'électrode de batterie (201) et d'acquérir des positions relatives de deux plaques d'électrode de batterie (201) adjacentes et empilées ; un circuit de rétroaction (103), couplé au circuit de détection (102), permettant d'envoyer les positions relatives des deux plaques d'électrode de batterie adjacentes et empilées (201) à la machine d'empilement de plaques d'électrode (20), de telle sorte que la machine d'empilement de plaques d'électrode (20) règle les positions des plaques d'électrode de batterie (201) en temps réel en fonction des positions relatives, ce qui permet un réglage en temps réel de positions de plaques d'électrode de batterie empilées (201) pendant le processus d'empilement des plaques d'électrode de batterie (201) afin d'améliorer le taux de réussite de test final de la batterie.
PCT/CN2018/075000 2018-02-01 2018-02-01 Dispositif et système de détection de plaque d'électrode de batterie, machine d'empilement de plaques d'électrode et procédé d'empilement WO2019148435A1 (fr)

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PCT/CN2018/075000 WO2019148435A1 (fr) 2018-02-01 2018-02-01 Dispositif et système de détection de plaque d'électrode de batterie, machine d'empilement de plaques d'électrode et procédé d'empilement

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PCT/CN2018/075000 WO2019148435A1 (fr) 2018-02-01 2018-02-01 Dispositif et système de détection de plaque d'électrode de batterie, machine d'empilement de plaques d'électrode et procédé d'empilement

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Citations (8)

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Publication number Priority date Publication date Assignee Title
JP2007033070A (ja) * 2005-07-22 2007-02-08 Techno Horon:Kk 位置検出方法
CN203398225U (zh) * 2013-08-09 2014-01-15 深圳市吉阳自动化科技有限公司 制袋式叠片机及其极片纠偏机构
CN104091322A (zh) * 2014-05-06 2014-10-08 无锡日联科技有限公司 叠片锂离子电池的检测方法
CN104197841A (zh) * 2014-09-09 2014-12-10 深圳市斯尔顿科技有限公司 一种锂电池卷绕层边界检测方法
JP2016012549A (ja) * 2014-06-30 2016-01-21 エリーパワー株式会社 電極積層体のセパレータの位置ずれ検出方法およびその装置
CN206056512U (zh) * 2016-08-31 2017-03-29 天津市捷威动力工业有限公司 用于极片涂布对齐度检测及纠偏调整的设备
CN107238614A (zh) * 2017-07-30 2017-10-10 张亚平 叠片锂电池自动检测机
CN206893721U (zh) * 2017-05-12 2018-01-16 深圳迅泰德自动化科技有限公司 电池电芯自动叠片设备

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007033070A (ja) * 2005-07-22 2007-02-08 Techno Horon:Kk 位置検出方法
CN203398225U (zh) * 2013-08-09 2014-01-15 深圳市吉阳自动化科技有限公司 制袋式叠片机及其极片纠偏机构
CN104091322A (zh) * 2014-05-06 2014-10-08 无锡日联科技有限公司 叠片锂离子电池的检测方法
JP2016012549A (ja) * 2014-06-30 2016-01-21 エリーパワー株式会社 電極積層体のセパレータの位置ずれ検出方法およびその装置
CN104197841A (zh) * 2014-09-09 2014-12-10 深圳市斯尔顿科技有限公司 一种锂电池卷绕层边界检测方法
CN206056512U (zh) * 2016-08-31 2017-03-29 天津市捷威动力工业有限公司 用于极片涂布对齐度检测及纠偏调整的设备
CN206893721U (zh) * 2017-05-12 2018-01-16 深圳迅泰德自动化科技有限公司 电池电芯自动叠片设备
CN107238614A (zh) * 2017-07-30 2017-10-10 张亚平 叠片锂电池自动检测机

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