Image acquisition device and detection device

Abstract

The utility model relates to the field of battery detection, and provides an image acquisition device and a detection device. The image acquisition device comprises a camera shooting element used for acquiring image information of the battery cell explosion-proof valve; the annular light source is annularly arranged on the outer side of a light path of the camera element, the annular light source comprises at least two light-emitting areas which are sequentially distributed in the annular direction of the annular light source, and each light-emitting area can be independently turned on and off. The annular light source is arranged on the outer side of the light path of the camera element, the annular light source comprises at least two light-emitting areas which are sequentially distributed in the annular direction of the annular light source, and each light-emitting area can be independently turned on and off, so that the light-emitting areas at different positions can be turned on in the detection process; according to the invention, illumination is provided for the battery cell explosion-proof valve at different horizontal angles, so that defect characteristics on the surface of the battery cell explosion-proof valve show different imaging characteristics, the defect characteristics on the surface of the battery cell explosion-proof valve are fully highlighted, and the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to an image acquisition device and a detection device. Background Art

[0002] Lithium battery is a new type of green and environmentally friendly energy storage component with good high current discharge performance and high energy density, and is widely used in various fields. In order to improve the safety performance of lithium batteries, it is usually necessary to detect the explosion-proof valve of lithium batteries through a detection device.

[0003] In the related art, the detection device includes a camera, a coaxial light source and a control system. The coaxial light source is used to supplement the explosion-proof valve with light, the camera is used to collect images of the explosion-proof valve, and the control system detects surface defects of the explosion-proof valve based on visual recognition technology. The illumination angle provided by the coaxial light source of the detection device in the related art is relatively single, which cannot fully highlight the surface defect characteristics of the explosion-proof valve, resulting in poor detection effect. Utility Model Content

[0004] The utility model provides an image acquisition device and a detection device, which are used to solve the defect that the coaxial light source of the detection device in the prior art provides a relatively single illumination angle, cannot fully highlight the surface defect characteristics of the explosion-proof valve, and leads to poor detection effect.

[0005] In one aspect, the utility model provides an image acquisition device, comprising:

[0006] An imaging element, wherein the imaging element is used to collect image information of the explosion-proof valve of the battery cell;

[0007] An annular light source is arranged outside the optical path of the imaging element, and the annular light source comprises at least two luminous areas sequentially distributed along the annular direction of the annular light source, and each of the luminous areas is configured to be independently lit and extinguished.

[0008] According to an image acquisition device provided by the utility model, each of the light-emitting areas includes at least two lamp beads of different colors, and the lamp beads of different colors can be turned on and off independently.

[0009] According to an image acquisition device provided by the utility model, the imaging element comprises an area array camera and a macro lens connected to the area array camera.

[0010] According to an image acquisition device provided by the utility model, it also includes a support, and the imaging element and the annular light source are both arranged on the support.

[0011] According to an image acquisition device provided by the utility model, the support includes a base, a first mounting seat and a second mounting seat;

[0012] The first mounting seat and the second mounting seat are both arranged on the base, the annular light source is adjustably arranged on the second mounting seat along the optical path direction of the imaging element, and the imaging element is adjustably arranged on the first mounting seat along the optical path direction.

[0013] On the other hand, the utility model also provides a battery core explosion-proof valve detection device, including a control system and the image acquisition device as described above, the camera element and the annular light source are both connected to the control system, and the control system is used to obtain detection results based on the image information.

[0014] According to the utility model, a battery core explosion-proof valve detection device also includes a conveying device, wherein the conveying device is provided with a conveying surface for conveying the battery core, and the imaging element and the annular light source are both facing the conveying surface.

[0015] According to a battery cell explosion-proof valve detection device provided by the utility model, it also includes a position detection device, which is used to detect the position information of the battery cell on the conveying device. The position detection device and the conveying device are both connected to the control system, and the control system is used to control the start and stop of the conveying device.

[0016] According to a battery core explosion-proof valve detection device provided by the utility model, it also includes an indicator light, which is connected to the control system and is used to display the detection result.

[0017] According to a battery core explosion-proof valve detection device provided by the utility model, it also includes a display device, the display device is connected to the control system, and the display device is used to display the image information and the detection result.

[0018] The image acquisition device provided by the utility model is provided with an annular light source outside the optical path of the imaging element, and the annular light source includes at least two luminous areas distributed in sequence along the circumferential direction of the annular light source, and each luminous area is configured to be independently lit and extinguished. During the detection process, the luminous areas at different positions can be lit to provide illumination for the battery cell explosion-proof valve at different horizontal angles, so that the defect features on the surface of the battery cell explosion-proof valve show different imaging characteristics, thereby fully highlighting the defect features on the surface of the battery cell explosion-proof valve and improving the detection accuracy.

[0019] The battery core explosion-proof valve detection device provided by the utility model includes the image acquisition device provided by the utility model, and thus includes all the above-mentioned advantages of the battery core explosion-proof valve image device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of a battery core explosion-proof valve collection device provided in an embodiment of the utility model;

[0022] Figure 2 is a top view of the annular light source provided by an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a battery core explosion-proof valve detection device provided in an embodiment of the utility model.

[0024] Reference numerals:

[0025] 1. Camera element; 101. Area array camera; 102. Macro lens; 2. Ring light source; 201. Light-emitting area; 202. Lamp beads; 3. Support; 301. Base; 302. First mounting seat; 303. Second mounting seat; 4. Control system; 5. Conveying device; 6. Position detection device; 7. Indicator light; 8. Display device; 9. Battery cell; 901. Battery cell explosion-proof valve; 11. First lifting seat; 12. Second lifting seat. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Combine the following Figure 1-Figure 3 The image acquisition device provided in the embodiment of the utility model is described.

[0028] Specifically, the image acquisition device includes an imaging element 1 and a ring light source 2 .

[0029] The imaging element 1 is used to collect image information of the battery cell explosion-proof valve 901. Specifically, the imaging element 1 is used to be arranged above the battery cell explosion-proof valve 901 and facing the battery cell explosion-proof valve 901.

[0030] The annular light source 2 is disposed outside the optical path of the imaging element 1. Specifically, the annular light source 2 is disposed below the imaging element 1 and faces the battery cell explosion-proof valve 901 to provide light to the battery cell explosion-proof valve 901. Figure 2 As shown, the annular light source 2 includes at least two light-emitting areas 201 distributed in sequence along the annular direction of the annular light source 2, and each light-emitting area 201 is configured to be independently lit and extinguished.

[0031] The image acquisition device provided in the embodiment of the utility model is provided with an annular light source 2 outside the optical path of the imaging element 1, and the annular light source 2 includes at least two light-emitting areas 201 distributed in sequence along the annular direction of the annular light source 2, and each light-emitting area 201 is configured to be independently turned on and off. During the detection process, the light-emitting areas 201 at different positions can be lit to provide illumination for the battery cell explosion-proof valve 901 at different horizontal angles, so that the defect features on the surface of the battery cell explosion-proof valve 901 show different imaging characteristics, thereby fully highlighting the defect features on the surface of the battery cell explosion-proof valve 901 and improving the detection accuracy.

[0032] refer to Figure 2 As shown, in some embodiments provided by the utility model, each light-emitting area 201 includes at least two lamp beads 202 of different colors, and lamps of different colors can be turned on and off independently. In this embodiment, by providing at least two lamp beads 202 of different colors in each light-emitting area 201, and the different colors can be turned on and off independently, different spectra of light can be provided for the battery explosion-proof valve 901. In this way, when a single type of light cannot make the defects of the battery explosion-proof valve 901 clearly displayed, different spectra of light can be replaced to make the defects more obvious, thereby improving the accuracy of detection.

[0033] refer to Figure 3 As shown, in some embodiments provided by the present invention, the imaging element 1 includes an area array camera 101 and a macro lens 102 connected to the area array camera 101. The macro lens 102 generally has high optical performance and resolution, and can provide excellent image sharpness. When used with the area array camera 101, the large area of ​​the camera sensor can be fully utilized to obtain high-resolution images, and has excellent reproduction capabilities for details such as texture, color, and shape of the battery cell explosion-proof valve 901.

[0034] refer to Figure 1 As shown, in some embodiments provided by the present invention, the image acquisition device further includes a support 3, and the imaging element 1 and the annular light source 2 are both arranged on the support 3. By arranging both the imaging element 1 and the annular light source 2 on the support 3, the integration of the image acquisition device can be improved.

[0035] In some embodiments provided by the present invention, the support 3 includes a base 301 , a first mounting seat 302 and a second mounting seat 303 .

[0036] The first mounting seat 302 and the second mounting seat 303 are both arranged on the base 301, and the annular light source 2 is adjustably arranged on the second mounting seat 303 along the direction of the optical path of the imaging element 1, and the imaging element 1 is adjustably arranged on the first mounting seat 302 along the direction of the optical path. In this embodiment, by adjusting the position of the imaging element 1 on the first mounting seat 302 along the direction of the optical path, the distance between the imaging element 1 and the battery cell explosion-proof valve 901 can be conveniently adjusted, so that the imaging element 1 can better obtain the image information of the battery cell explosion-proof valve. By adjusting the position of the annular light source 2 on the second mounting seat 303 along the direction of the optical path, the distance between the annular light source 2 and the battery cell explosion-proof valve 901 can be adjusted, so that the annular light source 2 can better provide illumination for the battery cell explosion-proof valve 901.

[0037] Optionally, the image acquisition device further includes a first lifting seat 11, the first mounting seat 302 is configured as a gantry structure, the first lifting seat 11 is movably mounted on the first mounting seat 302 in a vertical direction, and the imaging element 1 is mounted on the first lifting seat 11. Furthermore, the first lifting seat 11 can be locked on the first mounting seat 302 by a locking screw.

[0038] Optionally, the image acquisition device further comprises a second lifting seat 12, which is movably mounted on the second mounting seat 303 along the vertical direction, and the annular light source 2 is mounted on the second lifting seat 12. Further, the second lifting seat 12 can be locked on the second mounting seat 303 by a locking screw.

[0039] The utility model also provides a battery core explosion-proof valve detection device in an embodiment.

[0040] Specifically, the battery core explosion-proof valve detection device includes a control system 4 and the image acquisition device as described above. The imaging element 1 and the annular light source 2 are both connected to the control system 4, and the control system 4 is used to obtain the detection result based on the image information.

[0041] It should be noted that the battery cell explosion-proof valve detection device includes an image acquisition device, and therefore also includes all the above-mentioned advantages of the image acquisition device.

[0042] In addition, the control system 4 obtains detection results based on image information, which belongs to the content of the prior art. For example, the control system 4 can use visual recognition technology to process image information. The present utility model does not actually involve improvements in image information processing, so it will not be repeated here.

[0043] In some embodiments provided by the utility model, the battery cell explosion-proof valve detection device further includes a conveying device 5. The conveying device 5 is provided with a conveying surface for conveying the battery cell, and the camera element 1 and the annular light source 2 are both facing the conveying surface. In this embodiment, by providing the conveying device 5, and making the camera element 1 and the annular light source 2 both face the conveying surface, the battery cell 9 can be transferred to the detection station by the conveying device 5, and after the detection is completed, the battery cell 9 can be transferred to the next station by the conveying device 5, which is more convenient to use.

[0044] Alternatively, the conveying device 5 may be a roller conveyor or a conveyor belt.

[0045] In some embodiments provided by the utility model, the battery cell explosion-proof valve detection device also includes a position detection device 6. The position detection device 6 is used to detect the position information of the battery cell 9 on the conveying device 5. For example, the position detection device 6 can be set on the frame of the conveying device 5. The position detection device 6 and the conveying device 5 are both connected to the control system 4, and the control system 4 is used to control the start and stop of the conveying device 5. In this embodiment, the position information of the battery cell 9 can be detected by the position detection device 6, and then the start and stop of the conveying device 5 can be controlled by the control system 4. Such a setting can enable the battery cell explosion-proof valve detection device to automatically load and detect, thereby improving the degree of automation of the battery cell explosion-proof valve detection device. The position detection device 6 can be a laser sensor, an ultrasonic sensor, or a photoelectric sensor.

[0046] In some embodiments provided by the utility model, the battery cell explosion-proof valve detection device further includes an indicator light 7. The indicator light 7 is connected to the control system 4, and the indicator light 7 is used to display the detection result. For example, the indicator light 7 has at least two colors. When the battery cell explosion-proof valve 901 is detected to be qualified, the indicator light 7 switches to the first color mode, and when the battery cell explosion-proof valve 901 is detected to be unqualified, the indicator light 7 switches to the second color mode. Such a setting enables the operator to clearly know whether the battery cell explosion-proof valve 901 is detected to be qualified.

[0047] In some embodiments provided by the utility model, the battery core explosion-proof valve detection device further includes a display device 8. The display device 8 is connected to the control system 4, and the display device 8 is used to display image information and detection results. In this way, the operator can view and analyze the image information and detection results through the display device 8.

[0048] Optionally, the display device 8 is configured as a display screen.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An image acquisition device, characterized in that: include: An imaging element (1), the imaging element (1) being used to collect image information of the battery core explosion-proof valve; An annular light source (2), the annular light source (2) being arranged outside the optical path of the imaging element (1), the annular light source (2) comprising at least two luminous areas (201) distributed in sequence along the annular direction of the annular light source (2), each of the luminous areas (201) being configured to be independently lit and extinguished.

2. The image acquisition device according to claim 1, characterized in that: Each of the light-emitting areas (201) comprises at least two lamp beads (202) of different colors, and the lamp beads (202) of different colors can be turned on and off independently.

3. The image acquisition device according to claim 1, characterized in that: The imaging element (1) comprises an area array camera (101) and a macro lens (102) connected to the area array camera (101).

4. The image acquisition device according to any one of claims 1 to 3, characterized in that: It also comprises a support (3), on which the imaging element (1) and the annular light source (2) are both arranged.

5. The image acquisition device according to claim 4, characterized in that: The support (3) comprises a base (301), a first mounting seat (302) and a second mounting seat (303); The first mounting seat (302) and the second mounting seat (303) are both arranged on the base (301); the annular light source (2) is adjustably arranged on the second mounting seat (303) along the optical path direction of the imaging element (1); and the imaging element (1) is adjustably arranged on the first mounting seat (302) along the optical path direction.

6. A battery core explosion-proof valve detection device, characterized in that: It comprises a control system (4) and an image acquisition device as claimed in any one of claims 1 to 5, wherein the imaging element (1) and the annular light source (2) are both connected to the control system (4), and the control system (4) is used to obtain a detection result based on the image information.

7. The battery core explosion-proof valve detection device according to claim 6, characterized in that: It also comprises a conveying device (5), wherein the conveying device (5) is provided with a conveying surface for conveying the battery core (9), and the imaging element (1) and the annular light source (2) are both facing the conveying surface.

8. The battery core explosion-proof valve detection device according to claim 7, characterized in that: It also includes a position detection device (6), which is used to detect the position information of the battery cell (9) on the conveying device (5), and the position detection device (6) and the conveying device (5) are both connected to the control system (4), and the control system (4) is used to control the start and stop of the conveying device (5).

9. The battery core explosion-proof valve detection device according to claim 6, characterized in that: It also comprises an indicator light (7), which is connected to the control system (4) and is used to display the detection result.

10. The battery core explosion-proof valve detection device according to claim 6, characterized in that: It also comprises a display device (8), which is connected to the control system (4) and is used to display the image information and the detection result.

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