Electromagnetic scanning detection system and detection method for battery welding quality detection

Abstract

The invention belongs to the technical field of testing, and particularly relates to defect testing, in particular to an electromagnetic scanning detection system and method for battery welding quality detection, and the system comprises a driving mechanism which is electrically connected with a control module and is provided with a probe mechanism; the control module is configured to control the driving mechanism to drive the probe mechanism to rotate and swing, so that the probe mechanism detects a complete welding area, and the defect position and the defect direction in the welding area are detected through the probe mechanism. Therefore, the defect position and the defect direction of the welding area can be accurately detected, the welding area can be accurately detected, and the quality of the battery is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of testing, specifically relates to testing defects, and particularly relates to an electromagnetic scanning detection system and a detection method for battery welding quality detection. Background Art

[0002] After welding on a battery, it is necessary to detect the welding quality. In the related art, a probe with a low electromagnetic intensity can accurately detect the defect direction in the welding area, but the detection efficiency of the defect position in the welding area is low. A probe with a high electromagnetic intensity can accurately detect the defect position, but cannot accurately detect the defect direction.

[0003] Therefore, due to the technical problem that it is impossible to accurately detect both the defect position and the defect direction in the welding area, it is necessary to design an electromagnetic scanning detection system and a detection method for battery welding quality detection.

[0004] It should be noted that the above information disclosed in this background art part is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure at least provide an electromagnetic scanning detection system and a detection method for battery welding quality detection.

[0006] In a first aspect, the embodiments of the present disclosure provide an electromagnetic scanning detection system for battery welding quality detection, including: A driving mechanism, on which a probe mechanism is provided; A control module, electrically connected to the driving mechanism, and configured to control the driving mechanism to drive the probe mechanism to rotate and swing, so that the probe mechanism detects the entire welding area, and detects the defect position and the defect direction in the welding area through the probe mechanism.

[0007] In an optional implementation manner, the driving mechanism includes: a rotating motor and a voice coil swing motor; Both the rotating motor and the voice coil swing motor are electrically connected to the control module; The voice coil swing motor is arranged on the rotating motor; The voice coil swing motor is connected with a swing column, and the probe mechanism is arranged at the bottom end of the swing column; The control module is configured to control the rotating motor to drive the voice coil swing motor to rotate, and control the swing angle of the voice coil swing motor, so that the swing column drives the probe mechanism to rotate and swing, and detects the entire welding area.

[0008] In an alternative embodiment, the probe mechanism includes: a first electromagnetic probe and a plurality of second electromagnetic probes; The first electromagnetic probe is disposed at the central position of the bottom end of the swing column; The second electromagnetic probes are disposed at the bottom end of the swing column, and the second electromagnetic probes are equidistantly arranged around the first electromagnetic probe.

[0009] In an alternative embodiment, there are at least three second electromagnetic probes to surround the magnetic field range of the first electromagnetic probe through the boundary of the magnetic field ranges of the second electromagnetic probes.

[0010] In an alternative embodiment, the second electromagnetic probes are electromagnetic probes with a large range and low electromagnetic intensity; The first electromagnetic probe is an electromagnetic probe with a small range and high electromagnetic intensity.

[0011] In an alternative embodiment, the control module is configured to control the rotation of the rotation motor and the swing of the voice coil swing motor to drive the rotation and swing of the first electromagnetic probe and the second electromagnetic probes to detect the entire welding area. When the first electromagnetic probe detects a defect position in the welding area, the corresponding defect position is marked as an abnormal area in the welding area. Then, the control module controls the rotation of the rotation motor and the swing of the voice coil swing motor to cause a second electromagnetic probe to rotate and swing repeatedly in the abnormal area to detect and obtain the defect direction of the abnormal area.

[0012] In an alternative embodiment, the control module is configured to control the rotation of the rotation motor and the swing of the voice coil swing motor to drive the rotation and swing of the first electromagnetic probe and the second electromagnetic probes to detect the entire welding area. When the second electromagnetic probe detects the defect direction, the magnetic field range of the corresponding second electromagnetic probe is determined to mark the corresponding area as an abnormal area in the welding area according to the magnetic field range. Then, the control module controls the rotation of the rotation motor and the swing of the voice coil swing motor to cause the first electromagnetic probe to rotate and swing repeatedly in the abnormal area to detect the defect position in the abnormal area.

[0013] In an alternative embodiment, the control module is further configured to control the second electromagnetic probes to acquire the magnetic field signals of the rotation motor and the voice coil swing motor, and compare the magnetic field signals with preset magnetic field signals to determine whether the rotation motor and the voice coil swing motor are abnormal.

[0014] In an alternative embodiment, the control module is further configured to determine whether the second electromagnetic probes are abnormal according to the magnetic field signals acquired by all the second electromagnetic probes before the second electromagnetic probes perform detection, that is, when all the magnetic field signals are the same, it is determined that all the second electromagnetic probes are normal, and when the magnetic field signals are different, it is determined that some of the second electromagnetic probes are abnormal.

[0015] In a second aspect, an embodiment of the present disclosure further provides a detection method using the above-mentioned electromagnetic scanning detection system for battery welding quality detection, comprising: The driving mechanism drives the probe mechanism to rotate and swing, so that the probe mechanism detects the complete welding area, and detects the defect position and defect direction in the welding area through the probe mechanism.

[0016] The beneficial effect of the present invention is that the electromagnetic scanning detection system for battery welding quality detection includes: a driving mechanism, which is electrically connected to a control module, and a probe mechanism is provided on the driving mechanism. The control module is configured to control the driving mechanism to drive the probe mechanism to rotate and swing, so that the probe mechanism detects the complete welding area, and detects the defect position and defect direction in the welding area through the probe mechanism, thereby achieving accurate detection of both the defect position and the defect direction of the welding area, accurately detecting the welding area, and ensuring the quality of the battery.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the structure of an electromagnetic scanning detection system for battery welding quality detection provided by an embodiment of the present disclosure; Figure 2 A block diagram of the principle of an electromagnetic scanning detection system for battery welding quality detection provided by an embodiment of the present disclosure; Figure 3 A schematic structural diagram of a probe mechanism provided in an embodiment of the present disclosure; Figure 4 A schematic diagram of the magnetic field range provided in an embodiment of the present disclosure.

[0021] In the picture: 1 Driving mechanism, 11 Rotating motor, 12 Voice coil swing motor, 13 Swing column; 2 Probe mechanism, 21 First electromagnetic probe, 22 Second electromagnetic probe. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0023] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific features, structures, or characteristics after such phrases can be included in at least one embodiment of the present disclosure. Therefore, specific features, structures, or characteristics can be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "for purposes of illustration, instance, or explanation. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily construed as being preferred or superior to other embodiments, aspects, or designs. Instead, the use of terms such as "example", "exemplary", etc. is intended to present concepts in a specific manner.

[0024] The following describes in detail some embodiments of the present invention in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0025] When detecting the defect direction, for a probe with a low magnetic field intensity, when the axis of its magnetic field is parallel to the axis of the defect direction, the defect direction can be accurately detected.

[0026] As Figure 1 and Figure 2 shown, at least one disclosed embodiment provides an electromagnetic scanning detection system for battery welding quality detection, including: a control module; a driving mechanism 1, electrically connected to the control module, and a probe mechanism 2 is arranged on the driving mechanism 1. The control module is configured to control the driving mechanism 1 to drive the probe mechanism 2 to rotate and swing, so that the probe mechanism 2 detects the complete welding area, and determines the defect position and defect direction in the welding area through the data obtained by the detection of the probe mechanism 2, thereby achieving accurate detection of both the defect position and the defect direction in the welding area, accurately detecting the welding area, and ensuring the quality of the battery.

[0027] Specifically, the defects include pores, slag inclusions, incomplete penetration, lack of fusion, cracks, pits, undercut, overlap, etc.

[0028] Specifically, the defect position refers to the location of the defect on the workpiece.

[0029] Specifically, the defect direction can refer to the extension direction of pores, the extension direction of cracks, etc.

[0030] In this embodiment, the magnetic field signal detected by the first electromagnetic probe 21 can be used to determine whether there are defects in the welding area, and further determine the defect position; the magnetic field signal detected by the second electromagnetic probe 22 can be used to determine the defect direction in the welding area.

[0031] In an alternative embodiment, the driving mechanism 1 includes: a rotating motor 11 and a voice coil swing motor 12; both the rotating motor 11 and the voice coil swing motor 12 are electrically connected to the control module; the voice coil swing motor 12 is arranged on the rotating motor 11; the voice coil swing motor 12 is connected with a swing column 13, and the probe mechanism 2 is arranged at the bottom end of the swing column 13; the control module is configured to control the rotating motor 11 to drive the voice coil swing motor 12 to rotate, and control the swing angle of the voice coil swing motor 12, so that the swing column 13 drives the probe mechanism 2 to rotate and swing, and detect the entire welding area.

[0032] In this embodiment, since it is necessary to accurately detect the defect direction and defect position, through the cooperation of the rotating motor 11 and the voice coil swing motor 12, the entire probe mechanism 2 can rotate and swing, adjust the detection angle, and meet the detection requirements.

[0033] As Figure 3 shown, in an alternative embodiment, the probe mechanism 2 includes: a first electromagnetic probe 21 and a plurality of second electromagnetic probes 22; the first electromagnetic probe 21 is arranged at the center position of the bottom end of the swing column 13; the second electromagnetic probes 22 are arranged at the bottom end of the swing column 13, and the second electromagnetic probes 22 are arranged equidistantly around the first electromagnetic probe 21.

[0034] In this embodiment, through the cooperation of the rotating motor 11 and the voice coil swing motor 12, the angle between the magnetic field axis of each second electromagnetic probe 22 and the entire welding area is continuously changed, so that the second electromagnetic probes 22 can detect the entire welding area from various angles, and when there is a defect position, the defect direction can be accurately detected.

[0035] As Figure 3 shown, in an alternative embodiment, there are at least three second electromagnetic probes 22, so as to surround the magnetic field range of the first electromagnetic probe 21 by the magnetic field range boundary of the second electromagnetic probes 22.

[0036] In this embodiment, please refer to Figure 4 , at least three second electromagnetic probes 22. The boundaries of the magnetic field ranges generated by them can surround the magnetic field range of the first electromagnetic probe 21, limit the magnetic field of the first electromagnetic probe 21, ensure that the magnetic field range of the first electromagnetic probe 21 is within a relatively small range, so that the first electromagnetic probe 21 can detect the defect position more accurately.

[0037] In an alternative embodiment, the second electromagnetic probe 22 is an electromagnetic probe with a large range and low electromagnetic intensity; the first electromagnetic probe 21 is an electromagnetic probe with a small range and high electromagnetic intensity.

[0038] Specifically, the electromagnetic intensity range of the first electromagnetic probe 21 can be from 20 KA / m to 40 KA / m, and the coverage range of the first electromagnetic probe 21 can be from 0.1 cm 2 to 1 cm 2 between.

[0039] Specifically, the electromagnetic intensity range of the second electromagnetic probe 22 can be from 2 KA / m to 4 KA / m, and the coverage range of the second electromagnetic probe 21 can be from 3 cm 2 to 10 cm 2 between.

[0040] In this embodiment, the high-electromagnetic-intensity magnetic field of the first electromagnetic probe 21 can detect the defect position more accurately.

[0041] In this embodiment, the low-electromagnetic-intensity magnetic field of the second electromagnetic probe 22 can detect the defect direction more accurately.

[0042] In an alternative embodiment, the control module is configured to control the rotation of the rotation motor 11 and the swing of the voice coil swing motor 12 to drive the probe mechanism 2 to rotate and swing, that is, to drive the first electromagnetic probe 21 and the second electromagnetic probe 22 to rotate and swing, and detect the entire welding area. When the first electromagnetic probe 21 detects the defect position in the welding area, the corresponding defect position in the welding area is marked as an abnormal area. Then, the control module controls the rotation of the rotation motor 11 and the swing of the voice coil swing motor 12, so that a second electromagnetic probe 22 rotates and swings repeatedly in the abnormal area to detect and obtain the defect direction of the abnormal area.

[0043] In this embodiment, during the process of driving the first electromagnetic probe 21 and the second electromagnetic probe 22 to rotate and swing by controlling the rotation of the rotation motor 11 and the swing of the voice coil swing motor 12, the defect position may be detected first. At this time, the defect position is marked, and then the second electromagnetic probe 22 is used to detect the marked position to obtain the defect direction, realizing the accurate detection of the defect position and defect direction in the welding area and improving the detection efficiency.

[0044] In an alternative embodiment, the control module is configured to control the rotation of the rotation motor 11 and the swing of the voice coil swing motor 12 to drive the probe mechanism 2 to rotate and swing, that is, to drive the first electromagnetic probe 21 and the second electromagnetic probe 22 to rotate and swing, so as to detect the entire welding area. When the second electromagnetic probe 22 detects the defect direction, the magnetic field range of the corresponding second electromagnetic probe 22 is determined, and the corresponding area in the welding area is marked as an abnormal area according to the magnetic field range. Then, the control module controls the rotation of the rotation motor 11 and the swing of the voice coil swing motor 12, so that the first electromagnetic probe 21 rotates and swings repeatedly in the abnormal area to detect the defect position in the abnormal area.

[0045] In this embodiment, during the process of driving the first electromagnetic probe 21 and the second electromagnetic probe 22 to rotate and swing by rotating the rotation motor 11 and controlling the swing of the voice coil swing motor 12, the defect direction may be detected first. At this time, the welding area corresponding to the magnetic field range of the second electromagnetic probe 22 that detects the defect direction is marked, and then the marked area is detected by the first electromagnetic probe 21 to obtain the accurate defect position, realizing the accurate detection of the defect position and defect direction in the welding area, and improving the detection efficiency.

[0046] In an alternative embodiment, the control module is further configured to control the second electromagnetic probe 22 to obtain the magnetic field signals of the rotation motor 11 and the voice coil swing motor 12, and compare the magnetic field signals with the preset magnetic field signals to determine whether the rotation motor 11 and the voice coil swing motor 12 are abnormal.

[0047] In this embodiment, during the normal operation of the rotation motor 11 and the voice coil swing motor 12, their corresponding magnetic field changes are standard. The standard magnetic field change conditions of the rotation motor 11 and the voice coil swing motor 12 under various working conditions are stored in the control module in advance. When the rotation motor 11 and the voice coil swing motor 12 start to work, the magnetic field changes of the rotation motor 11 and the voice coil swing motor 12 can be sensed by the second electromagnetic probe 22. The actually obtained magnetic field change under this working condition is compared with the stored standard change conditions to determine whether the rotation motor 11 and the voice coil swing motor 12 are abnormal. If abnormal, the management personnel are notified to come to the site for inspection and repair to avoid the abnormal rotation motor 11 and voice coil swing motor 12 affecting the detection of the welding area.

[0048] In an alternative embodiment, the control module is further configured to determine whether the second electromagnetic probe 22 is abnormal according to the magnetic field signals obtained by all the second electromagnetic probes 22 before the second electromagnetic probe 22 performs detection, that is, when all the magnetic field signals are the same, it is determined that all the second electromagnetic probes 22 are normal, and when the magnetic field signals are different, it is determined that some of the second electromagnetic probes 22 are abnormal.

[0049] In this embodiment, when the second electromagnetic probe 22 is started but not yet detecting, the magnetic field signals detected by each second electromagnetic probe 22 are compared. When all the second electromagnetic probes 22 are normal, the magnetic field signals detected by all the second electromagnetic probes 22 are the same. If different magnetic field signals appear, it is determined that there is an abnormality in the second electromagnetic probe 22. At this time, the management personnel are notified to come to the site for inspection and maintenance to avoid the damage of the second electromagnetic probe 22 affecting the detection of the welding area.

[0050] At least one other disclosed embodiment also provides a detection method using the above electromagnetic scanning detection system for battery welding quality detection, including: the driving mechanism 1 drives the probe mechanism 2 to rotate so that the probe mechanism 2 detects the welding area, and data detected by the probe mechanism 2 is used to determine the defect position and defect direction in the welding area.

[0051] In summary, the electromagnetic scanning detection system for battery welding quality detection of the present invention includes: a control module; a driving mechanism 1 electrically connected to the control module, and a probe mechanism 2 is provided on the driving mechanism 1. The control module is configured to control the driving mechanism 1 to drive the probe mechanism 2 to rotate so that the probe mechanism 2 detects the welding area, and data detected by the probe mechanism 2 is used to determine the defect position and defect direction in the welding area, thereby achieving accurate detection of both the defect position and the defect direction in the welding area, accurately detecting the welding area, and ensuring the quality of the battery.

[0052] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0053] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms are not used herein to imply order or sequence, unless explicitly indicated in the text. Thus, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section.

[0054] Spatially relative terms, such as "inner", "outer", "beneath", "below", "lower", "above", "upper", etc., may be used herein for ease of description to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is turned over, an element described as "beneath" or "below" another element or feature will then be oriented "above" the other element or feature. Thus, the exemplary term "beneath" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0055] Based on the above revelation of the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electromagnetic scanning detection system for battery welding quality detection, characterized in that Including: A driving mechanism (1) with a probe mechanism (2) provided thereon; A control module, electrically connected to the driving mechanism (1) and configured to control the driving mechanism (1) to drive the probe mechanism (2) to rotate and swing, so that the probe mechanism (2) detects a complete welding area, and detects the defect position and defect direction in the welding area through the probe mechanism (2).

2. The electromagnetic scanning detection system according to claim 1, wherein: The driving mechanism (1) includes: a rotating motor (11) and a voice coil swing motor (12); Both the rotating motor (11) and the voice coil swing motor (12) are electrically connected to the control module; The voice coil swing motor (12) is arranged on the rotating motor (11); The voice coil swing motor (12) is connected with a swing column (13), and the probe mechanism (2) is arranged at the bottom end of the swing column (13); The control module is configured to control the rotating motor (11) to drive the voice coil swing motor (12) to rotate, and control the swing angle of the voice coil swing motor (12), so that the swing column (13) drives the probe mechanism (2) to rotate and swing to detect the entire welding area.

3. The electromagnetic scanning detection system according to claim 2, wherein: The probe mechanism (2) includes: a first electromagnetic probe (21) and a plurality of second electromagnetic probes (22); The first electromagnetic probe (21) is arranged at the central position of the bottom end of the swing column (13); The second electromagnetic probes (22) are arranged at the bottom end of the swing column (13), and the second electromagnetic probes (22) are arranged equidistantly around the first electromagnetic probe (21).

4. The electromagnetic scanning detection system according to claim 3, wherein: There are at least three second electromagnetic probes (22) to surround the magnetic field range of the first electromagnetic probe (21) through the magnetic field range boundary of the second electromagnetic probes (22).

5. The electromagnetic scanning detection system according to claim 3, wherein: The second electromagnetic probe (22) is an electromagnetic probe with a large range and low electromagnetic intensity; The first electromagnetic probe (21) is an electromagnetic probe with a small range and high electromagnetic intensity.

6. The electromagnetic scanning detection system according to claim 4, wherein: The control module is configured to control the rotation of the rotating motor (11) and the swing of the voice coil swing motor (12) to drive the first electromagnetic probe (21) and the second electromagnetic probes (22) to rotate and swing to detect the entire welding area. When the first electromagnetic probe (21) detects the defect position in the welding area, the corresponding defect position is marked as an abnormal area in the welding area. Then, the control module controls the rotation of the rotating motor (11) and the swing of the voice coil swing motor (12) to make one of the second electromagnetic probes (22) rotate and swing repeatedly in the abnormal area to detect and obtain the defect direction of the abnormal area.

7. The electromagnetic scanning detection system according to claim 4, wherein: The control module is configured to control the rotation of the rotation motor (11) and the swing of the voice coil swing motor (12) to drive the rotation and swing of the first electromagnetic probe (21) and the second electromagnetic probe (22) to detect the entire welding area. After the second electromagnetic probe (22) detects the defect direction, the magnetic field range of the corresponding second electromagnetic probe (22) is determined to mark the corresponding area as an abnormal area in the welding area according to the magnetic field range. Then, the control module controls the rotation of the rotation motor (11) and the swing of the voice coil swing motor (12) so that the first electromagnetic probe (21) rotates and swings repeatedly in the abnormal area to detect the defect position in the abnormal area.

8. The electromagnetic scanning detection system according to claim 4, wherein: The control module is further configured to control the second electromagnetic probe (22) to acquire the magnetic field signals of the rotation motor (11) and the voice coil swing motor (12), and compare the magnetic field signals with the preset magnetic field signals to determine whether the rotation motor (11) and the voice coil swing motor (12) are abnormal.

9. The electromagnetic scanning detection system according to claim 4, wherein: The control module is further configured to determine whether the second electromagnetic probe (22) is abnormal according to the magnetic field signals acquired by all the second electromagnetic probes (22) before the second electromagnetic probe (22) performs detection. That is, when all the magnetic field signals are the same, it is determined that all the second electromagnetic probes (22) are normal, and when the magnetic field signals are different, it is determined that some of the second electromagnetic probes (22) are abnormal.

10. A detection method using the electromagnetic scanning detection system for battery welding quality detection as described in claim 1, characterized in that, Including: The driving mechanism (1) drives the probe mechanism (2) to rotate and swing so that the probe mechanism (2) detects the complete welding area, and the defect position and defect direction in the welding area are detected by the probe mechanism (2).

Images