Foreign matter detection device for battery pole piece
By using the receiving component and the transmitting component in the battery pole foreign matter detection device for radiation detection, combined with the transmission and adjustment mechanism, the problem of inaccurate detection in the prior art is solved, and efficient and accurate detection of the battery pole gap is achieved.
Patent Information
- Application Number
- CN202422368723.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing foreign object detection device is prone to overexposed or misjudgment when detecting the battery pole, and cannot accurately determine the existence of metal chips, and the burrs at the dead corners that light irradiate cannot be detected.
The receiving component and the transmitting component are arranged oppositely above and below. The transmitting component radiates the rays, and the receiving component receives and transmits signals to the control mechanism for image reconstruction. Combined with the transmission mechanism and the adjustment mechanism, it ensures that the detection rays cover the gap area and improves detection accuracy.
It realizes efficient and accurate detection of battery pole gaps, reduces misjudgment and improves detection reliability.
Smart Images
Figure CN223295878U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery pole piece production equipment, in particular to a foreign matter detection device for battery pole pieces. Background Art
[0002] Battery pole pieces are one of the components of a battery. They consist of a metal layer, a coating layer, and a film layer. The coating is formed by applying paint to the upper and lower surfaces of the metal layer at intervals along the length of the metal layer. A gap is formed between two adjacent sections of the coating, and the film layer is attached to the metal layer and part of the upper surface of the coating corresponding to the gap position. Metal shavings in the environment tend to adhere to the battery pole pieces and are retained on the upper surface of the metal layer corresponding to the gap position along with the film. The battery pole pieces, which are composed of a metal layer, a coating layer, and a film layer, also need to be die-cut and compacted by equipment. In subsequent processes, metal shavings are squeezed and puncture the metal layer, resulting in batteries made from metal pole pieces punctured by metal shavings having the risk of leakage and spontaneous combustion. To prevent the metal layer from being punctured by metal shavings, the battery pole pieces need to be inspected by a foreign object detection device after the film is applied to check whether there are metal shavings attached to the battery pole pieces.
[0003] Existing foreign object detection devices project light onto and to the sides of the battery electrodes by placing light sources above and to the sides. Existing foreign object detection devices are also equipped with a camera to capture the image of the gap between the battery electrodes as it moves past the light source, and determine the presence of metal shavings based on the exposure of each area on the image. Because different metal materials have different reflectivities to light, existing foreign object detection devices are prone to overexposure during detection, resulting in the inability to accurately determine the presence of metal shavings, and sometimes missed detections. In addition, due to the limited angle of light irradiation, some burrs hidden in blind spots cannot be illuminated by the light, leading to misjudgments. Utility Model Content
[0004] To solve the above technical problems and achieve at least one advantage of the present invention, the present invention provides a foreign object detection device for a battery electrode. The battery electrode includes a metal layer and a coating. The coating is applied to the upper and lower surfaces of the metal layer at intervals along the length direction of the metal layer. A gap is formed between two adjacent sections of the coating. The film layer is attached to the upper surface of the metal layer corresponding to the gap position and covers a portion of the coating area. The foreign object detection device for the battery electrode includes:
[0005] Mounting seat;
[0006] At least one detection mechanism, the detection mechanism includes a receiving component and a transmitting component, the receiving component and the transmitting component are both mounted on the mounting base, and the receiving component and the transmitting component are arranged relative to each other up and down and separated by a predetermined distance, the battery electrode is horizontally placed between the receiving component and the transmitting component in a manner such that the coating faces the transmitting component, the transmitting component is used to radiate detection rays toward the battery electrode located between the receiving component and the transmitting component, the receiving component has a receiving portion, the receiving portion faces the transmitting component, and the size of the receiving portion is not less than the size of a single gap, the receiving component receives the detection signal radiated by the transmitting component and passing through the battery electrode through the receiving portion;
[0007] The control mechanism, the receiving component is communicatively connected to the control mechanism, the receiving component can send the received detection signal to the control mechanism, and the control mechanism is configured to reconstruct an image according to the detection signal transmitted by the receiving component.
[0008] According to an embodiment of the present invention, the mounting base has a high end and a low end lower than the high end, the receiving component is mounted on the high end, and the transmitting component is mounted on the low end.
[0009] According to an embodiment of the present invention, the transmitting assembly includes a transmitting element, which is installed on the high end portion and radiates detection rays toward the battery electrode located between the receiving assembly and the transmitting assembly.
[0010] According to one embodiment of the present invention, the transmitting component also includes a collimator, which is installed on the transmitting element. The collimator forms a collimation hole. The detection rays generated by the transmitting element pass through the collimator and radiate through the collimation hole to the battery electrode located between the receiving component and the transmitting component. The collimator is used to control the propagation direction and radiation range of the detection rays generated by the transmitting element.
[0011] According to one embodiment of the present invention, the foreign object detection device for battery electrodes also includes a conveying mechanism, which includes at least two conveying rollers, both of which are rotatably installed at the lower end portion, and the axes of the conveying rollers are parallel to the width direction of the battery electrode, and the conveying rollers can be in contact with the lower surface of the battery electrode.
[0012] According to one embodiment of the present invention, the foreign object detection device for battery pole pieces also includes an adjustment mechanism, the adjustment mechanism includes a height adjustment component, the height adjustment component is installed between the high end portion and the low end portion, and the height adjustment component is used to drive the high end portion to move vertically.
[0013] According to one embodiment of the present invention, the foreign object detection device for battery pole pieces also includes an adjustment mechanism, the adjustment mechanism includes a height adjustment component, the height adjustment component is installed between the high end portion and the transmitting assembly, and the height adjustment component is used to drive the transmitting assembly to move vertically.
[0014] According to an embodiment of the present invention, the emitting member is slidably mounted on the high end portion along a horizontal direction perpendicular to the length direction of the battery electrode to adjust the position of the emitting assembly.
[0015] According to an embodiment of the present invention, the adjustment mechanism further includes a position adjustment component, the launch member is drivingly connected to the position adjustment component, and the position adjustment component is used to drive the launch assembly to move in a horizontal direction perpendicular to the length direction of the battery electrode. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A diagram showing a usage scenario of the foreign object detection device for battery pole pieces according to the present invention is shown.
[0017] Figure 2 The figure shows a schematic structural diagram of the foreign matter detection device for battery pole pieces according to the present invention.
[0018] Figure 3 A cross-sectional view of the foreign matter detection device for battery pole pieces according to the present invention is shown.
[0019] Figure 4 Shown Figure 3 A magnified view of the structure of part A. DETAILED DESCRIPTION
[0020] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The preferred embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.
[0021] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.
[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.
[0023] refer to Figures 1 to 4 The foreign object detection device for a battery electrode according to the present invention will be described in detail below. The battery electrode comprises a metal layer, a coating layer, and a film layer. The coating layer is applied to the upper and lower surfaces of the metal layer at intervals along the length of the metal layer, thereby forming a gap between two adjacent sections of the coating layer. The film layer is adhered to the upper surface of the metal layer corresponding to the position of the gap and partially covers the two adjacent coating areas. The foreign object detection device for a battery electrode comprises a mounting base 10, a detection mechanism 20, and a control mechanism 30.
[0024] Specifically, the detection mechanism 20 includes a receiving component 21 and a transmitting component 22. The receiving component 21 and the transmitting component 22 are both mounted on the mounting base 10, and the receiving component 21 and the transmitting component 22 are arranged relative to each other up and down and separated by a predetermined distance. The battery electrode is placed horizontally between the receiving component 21 and the transmitting component 22. The transmitting component 22 is used to radiate detection rays toward the upper surface of the battery electrode located between the receiving component 21 and the transmitting component 22. The receiving component 21 has a receiving part 211, the receiving part 211 faces the transmitting component 22, and the size of the receiving part 211 is not less than the size of a single gap. When the gap corresponds to the position of the receiving part 211, the receiving component 21 receives the detection signal radiated by the transmitting component 22 and passing through the gap through the receiving part 211. The receiving component 21 is communicatively connected to the control mechanism 30. The receiving component 21 can send the received detection signal to the control mechanism 30. The control mechanism 30 is configured to reconstruct an image based on the detection signal transmitted by the receiving component 21. Subsequently, it can be determined whether there is a foreign object in the gap based on the image.
[0025] That is, the transmitting component 22 radiates detection radiation toward the battery electrode, at least a portion of which passes through the metal layer corresponding to the gap location and is received by the transmitting component 22. If there is a foreign object on the upper surface of the metal layer corresponding to the gap location, the foreign object will absorb the corresponding detection radiation, causing the receiving component 21 to be unable to receive or receive a very small amount of the detection signal corresponding to the foreign object location, resulting in a shadow appearing in the imaging of the control mechanism 30, thereby determining that a foreign object is present in the gap. Because the size of the receiving portion 211 is not smaller than the size of a single gap, the foreign object detection device of the battery electrode can detect at least one gap at a time.
[0026] In one example, the control mechanism 30 is implemented as a controller.
[0027] Preferably, the mounting base 10 has a high end portion 11 and a low end portion 12 lower than the high end portion 11. The receiving component 21 is mounted on the high end portion 11, and the transmitting component 22 is mounted on the low end portion 12. The transmitting component 22 radiates detection rays from top to bottom.
[0028] In one embodiment, the transmitting assembly 22 includes a transmitting element 221 , which is mounted on the high end portion 11 . The transmitting element 221 radiates detection radiation toward the battery electrode located between the receiving assembly 21 and the transmitting assembly 22 .
[0029] Preferably, the transmitting component 22 also includes a collimator 222, which is installed on the transmitting element 221. The collimator 222 forms a collimation hole 22201. The detection rays generated by the transmitting element 221 are radiated toward the battery plate through the collimator 222 and the collimation hole 22201. The collimator 222 can control the propagation direction and radiation range of the detection rays, so that the radiation range of the transmitting component 22 is not less than the size of a single gap, and the foreign body detection device on the surface of the battery plate can concentrate the radiated detection rays to the gap, so that the control mechanism 30 has clear imaging, thereby improving the accuracy of the device detection.
[0030] In one example, the transmitting component 221 is implemented to include an X-ray generator; the receiving component 21 is implemented to include an X-ray semiconductor linear array flat panel detector.
[0031] Preferably, the battery electrode can be placed horizontally between the receiving component 21 and the transmitting component 22 so as to be movable along its own length. The multiple gaps formed by the battery electrode can correspond to the positions of the receiving portion 211 in sequence. In this way, the foreign object detection device for the battery electrode can detect foreign objects in multiple gaps in sequence.
[0032] Furthermore, the foreign object detection device for battery pole pieces further includes a conveying mechanism 40 .
[0033] The conveying mechanism 40 includes at least two conveying rollers 41. Each of the conveying rollers 41 is rotatably mounted on the lower end portion 12, with the axis of each conveying roller 41 extending horizontally, perpendicular to the length of the battery electrode. At least two conveying rollers 41 are located on either side of the receiving assembly 21, with the lower surface of the battery electrode located between the receiving assembly 21 and the transmitting assembly 22 in contact with the surfaces of the conveying rollers 41. In this way, the moving battery electrode drives the conveying rollers 41 to rotate through friction, converting sliding friction into rolling friction, thereby propelling the battery electrode to move.
[0034] Preferably, the conveying mechanism 40 further includes a rotational drive component. The conveying roller 41 is rotatably connected to the rotational drive component, and the rotational drive component is used to drive the conveying roller 41 to rotate. When the conveying roller 41 is rotated by the rotational drive component, the conveying roller 41 drives the battery electrode sheet along its length direction through friction.
[0035] In one example, the rotation driving component is implemented to include a motor.
[0036] Furthermore, the foreign object detection device for battery pole pieces further includes an adjustment mechanism 50 .
[0037] The adjustment mechanism 50 includes a height adjustment component 51. The height adjustment component 51 is used to adjust the height of the emitting assembly 22 to adjust the radiation range of the emitting assembly 22. It is understood that when the size of the gap formed by the battery electrode is large and the height of the emitting assembly 22 is low, resulting in the radiation area of the emitting assembly 22 being smaller than the size of the gap, the height adjustment component 51 can drive the emitting assembly 22 to move upward to expand the radiation area of the emitting assembly 22 so that the radiation area of the emitting assembly 22 is adapted to the size of the gap. In this way, the foreign object detection device for battery electrodes can detect battery electrodes of different models.
[0038] In one embodiment, the height adjustment component 51 is installed between the high end portion 11 and the low end portion 12, and the height adjustment component 51 is used to drive the high end portion 11 to move vertically relative to the low end portion 12, so that the height of the launching assembly 22 installed on the high end portion 11 is adjusted.
[0039] As a deformable embodiment, the height adjustment component 51 is installed between the high end portion 11 and the launching assembly 22 , and the height adjustment component 51 is used to drive the launching assembly 22 to move vertically.
[0040] In one example, the height adjustment component 51 is implemented to include a cylinder.
[0041] Preferably, the emitting member 221 is slidably mounted on the high end portion 11 along a horizontal direction perpendicular to the length direction of the battery electrode, so as to adjust the position of the emitting assembly 22 .
[0042] Preferably, the adjustment mechanism 50 further includes a position adjustment component 52. The transmitter 221 is drivingly connected to the position adjustment component 52, and the position adjustment component 52 is used to drive the transmitter assembly 22 to move in a horizontal direction perpendicular to the length direction of the battery electrode. In this way, the foreign object detection device for battery electrode sheets can detect battery electrode sheets of different sizes.
[0043] In one example, the position adjustment component 52 is implemented by, but not limited to, a motor, a gear, a rack, and the like.
[0044] It is worth mentioning that the present invention can be used not only for foreign body detection of battery electrodes, but also for density detection of rubber tire steel wire layers. Specifically, the rubber tire steel wire layer is composed of a plurality of steel wires tightly arranged side by side, wherein the rubber tire steel wire layer is movably placed between the receiving component 21 and the transmitting component 22 along the length direction of the steel wire. If the distance between two adjacent steel wires is large, the detection rays radiated by the transmitting component 22 can be directly received by the receiving component 21, so that a blank area appears between the two adjacent steel wires in the imaging of the control mechanism 30, and thus it can be determined that the distance between the two adjacent steel wires is large. If the two adjacent steel wires are partially overlapped, the steel wire of the overlapping portion can absorb the corresponding detection rays, resulting in a shadow in the imaging of the control mechanism 30, and thus it can be determined that the two adjacent steel wires are partially overlapped.
[0045] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.
Claims
1. A foreign body detection device for a battery electrode, wherein the battery electrode comprises a metal layer, a coating layer, and a film layer. The coating layer is applied to the upper and lower surfaces of the metal layer at intervals along the length of the metal layer, with a gap formed between two adjacent sections of the coating layer. The film layer is attached to the upper surface of the metal layer corresponding to the gap position and covers a portion of the coating area. The device is characterized in that: The foreign body detection device for battery pole pieces includes: Mounting seat; At least one detection mechanism, the detection mechanism includes a receiving component and a transmitting component, the receiving component and the transmitting component are both mounted on the mounting base, and the receiving component and the transmitting component are arranged relative to each other up and down and separated by a predetermined distance, the battery electrode is horizontally placed between the receiving component and the transmitting component in a manner such that the coating faces the transmitting component, the transmitting component is used to radiate detection rays toward the battery electrode located between the receiving component and the transmitting component, the receiving component has a receiving portion, the receiving portion faces the transmitting component, and the size of the receiving portion is not less than the size of a single gap, the receiving component receives the detection signal radiated by the transmitting component and passing through the battery electrode through the receiving portion; The control mechanism, the receiving component is communicatively connected to the control mechanism, the receiving component can send the received detection signal to the control mechanism, and the control mechanism is configured to reconstruct an image according to the detection signal transmitted by the receiving component.
2. The foreign matter detection device for battery pole pieces according to claim 1, characterized in that: The mounting seat has a high end portion and a low end portion lower than the high end portion. The receiving component is mounted on the high end portion, and the transmitting component is mounted on the low end portion.
3. The foreign matter detection device for battery pole pieces according to claim 2, characterized in that: The transmitting assembly includes a transmitting element, which is installed on the high end portion and radiates detection rays toward the battery electrode located between the receiving assembly and the transmitting assembly.
4. The foreign matter detection device for battery pole pieces according to claim 3, characterized in that: The transmitting component also includes a collimator, which is installed on the transmitting element. The collimator forms a collimation hole. The detection rays generated by the transmitting element pass through the collimator and radiate through the collimation hole to the battery electrode located between the receiving component and the transmitting component. The collimator is used to control the propagation direction and radiation range of the detection rays generated by the transmitting element.
5. The foreign matter detection device for battery pole pieces according to claim 3 or 4, characterized in that: The foreign object detection device for the battery electrode also includes a conveying mechanism, which includes at least two conveying rollers. The conveying rollers are rotatably installed at the lower end, and the axes of the conveying rollers are parallel to the width direction of the battery electrode. The conveying rollers can be in contact with the lower surface of the battery electrode.
6. The foreign matter detection device for battery pole pieces according to claim 5, characterized in that: The foreign object detection device for battery pole pieces further includes an adjustment mechanism, which includes a height adjustment component installed between the high end portion and the low end portion, and the height adjustment component is used to drive the high end portion to move vertically.
7. The foreign matter detection device for battery pole pieces according to claim 6, characterized in that: The foreign object detection device for battery pole pieces further includes an adjustment mechanism, which includes a height adjustment component installed between the high end portion and the launch assembly, and the height adjustment component is used to drive the launch assembly to move vertically.
8. The foreign matter detection device for battery pole pieces according to claim 7, characterized in that: The emitting element is slidably mounted on the high end portion along a horizontal direction perpendicular to the length direction of the battery pole piece, so as to adjust the position of the emitting assembly.
9. The foreign matter detection device for battery pole pieces according to claim 8, characterized in that: The adjustment mechanism further includes a position adjustment component, the launch member is drivingly connected to the position adjustment component, and the position adjustment component is used to drive the launch assembly to move in a horizontal direction perpendicular to the length direction of the battery electrode.