Foreign matter detection equipment for negative electrode collector plate of large cylindrical battery

Abstract

The utility model provides a foreign matter detection device for a large cylindrical battery cathode collector plate, which is characterized in that a first ray emitting device and a first ray receiving device which are oppositely arranged are respectively positioned on two sides of a slide rail; the first ray emitting device and the first ray receiving device are obliquely arranged relative to the vertical plane where the sliding rail is located. In the operation process, a first ray emitting device and a first ray receiving device which are arranged at an inclined angle are used for collecting images, and when a battery carried by the battery carrier is located between the first ray emitting device and the first ray receiving device, the first ray emitting device and the first ray receiving device are used for receiving the images. The first ray receiving device can receive a projection image formed when the rays emitted by the first ray emitting device irradiate the bottom or the top of the corresponding battery, at the moment, the projection image presented on the ray receiving device when the rays irradiate the bottom of the battery can be clearly obtained, and foreign matter detection can be conducted on the battery more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, in particular to a foreign object detection device for the negative electrode busbar of large cylindrical batteries. Background Art

[0002] With the continuous expansion of the demand for lithium batteries, the terminal application market has higher and higher requirements for the quality of lithium batteries; in contrast, at present, lithium battery production enterprises are mixed, and various lithium battery accidents occur from time to time. Consumers' calls for improving the safety guarantee of lithium batteries are getting louder and louder; in the production process of large cylindrical batteries, some metal foreign objects may be introduced. If foreign object detection and removal are not carried out, there will be serious safety hazards.

[0003] However, when the existing large cylindrical batteries detect foreign objects such as copper, iron, and aluminum, they usually only detect the side of the battery. Due to the complex structure of the bottom of the large cylinder, relying on the horizontal photography detection method, foreign objects cannot be photographed and detected. Therefore, there is an urgent need for a foreign object detection device for the negative electrode busbar of large cylindrical batteries. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a foreign object detection device for the negative electrode busbar of large cylindrical batteries to solve the problem that the existing large cylindrical batteries usually only detect the side of the battery during foreign object detection and cannot detect foreign objects at the bottom of the battery mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a foreign object detection device for the negative electrode busbar of large cylindrical batteries, comprising: a slide rail; a battery carrier, which is slidably connected to the slide rail, and the battery carrier is used for carrying at least one battery; a first battery foreign object detection unit, the first battery foreign object detection unit comprising: a first ray emitting device and a first ray receiving device arranged oppositely, which are respectively located on both sides of the slide rail, the first ray emitting device is arranged opposite to the bottom of the battery and is inclined relative to the plane where the bottom of the battery is located, the first ray emitting device is used for emitting X-rays, and the first ray receiving device is used for receiving X-rays.

[0006] Optionally, the number of the first battery foreign object detection units is multiple, a rotating mechanism is arranged between two adjacent first battery foreign object detection units, the battery carrier is rotatably connected to the battery, and the rotating mechanism is used for driving the battery in the battery carrier to rotate.

[0007] Optionally, it further includes a second battery foreign object detection unit, which includes: a second ray emission device and a second ray reception device arranged oppositely, which are respectively located on both sides of the slide rail. The second ray emission device is used for emitting X-rays, and the second ray reception device is used for receiving X-rays. The second ray emission device is arranged opposite to the vertical plane where the side surface of the battery is located.

[0008] Optionally, the number of the second battery foreign object detection units is multiple. A rotating mechanism is arranged between two adjacent second battery foreign object detection units. The battery carrier is rotatably connected to the battery, and the rotating mechanism is used for driving the battery in the battery carrier to rotate.

[0009] Optionally, the rotating mechanism drives the battery in the battery carrier to rotate by 90° or 180°.

[0010] Optionally, the battery carrier includes: a slide base, which is slidably matched with the slide rail; a carrier bracket, which is misaligned and connected to the slide base; at least one bearing unit, the bearing unit includes two bearings, both of the two bearings in the bearing unit are connected to the carrier bracket along the horizontal direction and are arranged at intervals in the height direction, and a battery is carried between the two bearings through a fixing member; a first rotating member corresponding to the bearing unit one by one, which is coaxially connected to one end of the bearing unit, and the first rotating member drives the battery in the bearing unit to rotate horizontally.

[0011] Optionally, the rotating mechanism includes: a connecting seat, which is located on one side of the slide rail; a connecting bracket, which is slidably connected to the connecting seat along the horizontal direction; a cylinder, which is fixedly connected to the connecting seat, and the output end of the cylinder is fixedly connected to the connecting bracket through a connecting block. Driven by the cylinder, the connecting bracket slides close to or away from the slide rail; a second rotating member corresponding to the first rotating member one by one, which is rotatably connected to the connecting bracket; a motor, which drives the second rotating member to rotate through a transmission mechanism; when the connecting bracket slides close to the slide rail, the second rotating member contacts the first rotating member; when the connecting bracket slides away from the slide rail, the second rotating member is separated from the first rotating member.

[0012] Optionally, the second ray emission device is slidably connected to a first slideway, and the first slideway is arranged along the height direction.

[0013] Optionally, the second ray reception device is slidably connected to a third slideway, and the third slideway is arranged along the height direction.

[0014] Optionally, the third slideway is slidably connected to the second slideway through a connecting slider. The second slideway is horizontally arranged. When the slider slides on the second slideway, it can drive the third slideway to slide closer to or away from the battery carrier.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, by providing a first ray emitting device and a first ray receiving device which are arranged oppositely and are respectively located on both sides of the slide rail. The first ray emitting device is arranged oppositely to the bottom of the battery and is inclined with respect to the plane where the bottom of the battery is located. During the operation, image acquisition is performed by using the first ray emitting device and the first ray receiving device arranged at an inclined angle. When the battery carried by the battery carrier is located between the first ray emitting device and the first ray receiving device, the first ray receiving device can receive the projection image formed by the X-ray emitted by the first ray emitting device penetrating the battery when irradiating the bottom or top of the corresponding battery. At this time, the projection image of the ray irradiating the bottom of the battery presented on the ray receiving device can be clearly obtained, and foreign object detection of the battery can be performed more accurately. Description of the Drawings

[0017] Figure 1 It is a schematic three-dimensional structure diagram of the present utility model.

[0018] Figure 2 It is a schematic assembly structure diagram of the slide rail, the battery carrier and the rotating mechanism of the present utility model.

[0019] Figure 3 It is a first schematic three-dimensional structure diagram of the battery carrier of the present utility model.

[0020] Figure 4 It is a second schematic three-dimensional structure diagram of the battery carrier of the present utility model.

[0021] Figure 5 It is a schematic three-dimensional structure diagram of the rotating mechanism of the present utility model.

[0022] Figure 6 It is a first schematic use state diagram of the ray emitting device of the present utility model.

[0023] Figure 7 It is a second schematic use state diagram of the ray emitting device of the present utility model.

[0024] Figure 8 It is a schematic use state diagram of the ray receiving device of the present utility model.

[0025] In the figure: 1 - slide rail, 2 - battery carrier, 201 - slide base, 202 - pulley, 203 - carrier bracket, 204 - bearing, 205 - first rotating member, 3 - first ray emitting device, 4 - first ray receiving device, 5 - second ray emitting device, 6 - second ray receiving device, 7 - rotating mechanism, 701 - connecting seat, 702 - first slideway, 703 - first connecting plate, 704 - cylinder, 705 - connecting block, 706 - motor, 707 - bracket, 708 - second rotating member, 709 - first transmission assembly, 710 - second transmission assembly, 8 - first height adjusting mechanism, 801 - second connecting plate, 802 - first sliding connecting plate, 803 - first slideway, 9 - distance adjusting mechanism, 901 - second slideway, 10 - second height adjusting mechanism, 1001 - third connecting plate, 1002 - second sliding connecting plate, 1003 - third slideway. Detailed implementation manner

[0026] Next, the solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments.

[0027] It should be noted that the terms "first", "second", etc. in the specification, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0029] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0030] In addition, the terms "installed", "set up", "provided with", "connected", "linked", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe this application in detail with reference to the drawings and in conjunction with the embodiments.

[0032] Please refer to Figure 1 and Figure 6 , a foreign object detection device for the negative electrode busbar of a large cylindrical battery of the present utility model, comprising: a slide rail 1; a battery carrier 2, which is slidably connected to the slide rail 1, and the battery carrier 2 is used to carry at least one battery; a first battery foreign object detection unit, the first battery foreign object detection unit comprising: a first ray emitting device 3 and a first ray receiving device 4 arranged oppositely, which are respectively located on both sides of the slide rail 1, the first ray emitting device 3 is arranged opposite to the bottom of the battery and is inclined with respect to the plane where the bottom of the battery is located, the first ray emitting device 3 is used to emit X-rays, and the first ray receiving device 4 is used to receive X-rays; when the battery carried by the battery carrier 2 is located between the first ray emitting device 3 and the first ray receiving device 4, the first ray receiving device 4 can receive the projection image formed by the rays emitted by the first ray emitting device 3 irradiating the bottom or top of the corresponding battery.

[0033] Specifically, the slide rail 1 is a guiding slideway, which can guide the battery carrier 2 when slidingly cooperating with the battery carrier 2. In this application, the slide rail 1 is an electromagnetic slide rail, the battery carrier 2 has a pulley 202, and the pulley 202 is an electromagnetic pulley. By the cooperation of the electromagnetic pulley and the electromagnetic slideway, the battery carrier 2 can be driven to slide between the first ray emitting device 3 and the first ray receiving device 4; since the relatively arranged first ray emitting device 3 and first ray receiving device 4 are respectively located on both sides of the slide rail 1, and the first ray emitting device 3 and the first ray receiving device 4 are inclined with respect to the vertical plane where the slide rail 1 is located, it can perform ray image acquisition on the negative electrode busbar of the battery, and thus can accurately detect whether there is a foreign object on the negative electrode busbar of the battery.

[0034] More specifically, the arrangement direction of the first ray emitting device 3 and the first ray receiving device 4 can be inclined upward or downward relative to the vertical plane where the slide rail 1 is located, as long as the first ray emitting device 3 is aligned with the negative electrode bus bar of the battery. The inclination angle value is α, where 10° ≤ α ≤ 80°. In this application, the inclination angle of the first ray emitting device 3 and the first ray receiving device 4 is 45°, and it can clearly see whether there are foreign objects in each part of the negative electrode bus bar of the battery.

[0035] During the operation, image acquisition is performed using the first ray emitting device 3 and the first ray receiving device 4 arranged at an inclination angle. When the battery carried by the battery carrier 2 is located between the first ray emitting device 3 and the first ray receiving device 4, the first ray receiving device 4 can receive the projection image formed by the ray emitted by the first ray emitting device 3 irradiating the bottom or top of the corresponding battery. At this time, the projection image of the ray irradiating the bottom of the battery presented on the ray receiving device can be clearly obtained, and the foreign object detection of the battery can be more accurate.

[0036] In one embodiment of the present invention, the number of the first battery foreign object detection units is multiple, and a rotating mechanism 7 is provided between two adjacent first battery foreign object detection units. The battery carrier 2 is rotatably connected to the battery, and the rotating mechanism 7 is used to drive the battery in the battery carrier 2 to rotate.

[0037] Specifically, the first battery foreign object detection unit is used to detect foreign objects on the negative electrode bus bar of the battery. In order to be able to take pictures from multiple angles, a rotating mechanism 7 can be provided between every two first battery foreign object detection units. The rotating mechanism 7 is used to rotate the battery carried by the battery carrier 2, and the rotation angle can be set accordingly according to needs or according to the number of the first battery foreign object detection units, and multiple groups of images at different angles can be collected to achieve the purpose of accurate detection.

[0038] In one embodiment of the present invention, it further includes a second battery foreign object detection unit. The second battery foreign object detection unit includes: a second ray emitting device 5 and a second ray receiving device 6 arranged opposite to each other, which are respectively located on both sides of the slide rail 1. The second ray emitting device 5 is used to emit X-rays, and the second ray receiving device 6 is used to receive X-rays. The second ray emitting device 5 is arranged opposite to the vertical plane where the side of the battery is located; when the battery carried by the battery carrier 2 is located between the second ray emitting device 5 and the second ray receiving device 6, the second ray receiving device 6 can receive the projection image formed by the ray emitted by the second ray emitting device 5 irradiating the side of the corresponding battery.

[0039] Specifically, since it is necessary to detect foreign objects on the battery negative electrode busbar in addition to detecting foreign objects on various parts of the battery side, the present application is also provided with a second battery foreign object detection unit, which is directly opposite to the battery side, so that the second ray receiving device 6 can receive the projection image formed by the rays emitted by the second ray emitting device 5 irradiating on the corresponding battery side, and the foreign objects on the battery side can also be detected more accurately.

[0040] In one embodiment of the present invention, the number of the second battery foreign object detection units is multiple, and a rotating mechanism 7 is arranged between two adjacent second battery foreign object detection units. The battery carrier 2 is rotatably connected to the battery, and the rotating mechanism 7 is used to drive the battery in the battery carrier 2 to rotate.

[0041] Specifically, the second battery foreign object detection unit is used to detect foreign objects on the battery side. In order to be able to take pictures from multiple angles, a rotating mechanism 7 can be arranged between every two first battery foreign object detection units. The rotating mechanism 7 is used to rotate the battery carried by the battery carrier 2, and the rotation angle can be set accordingly according to needs or according to the number of the second battery foreign object detection units, so as to collect multiple groups of images at different angles to achieve the purpose of accurate detection.

[0042] In one embodiment of the present invention, the rotating mechanism 7 can drive the battery in the battery carrier 2 to rotate 90° or 180°.

[0043] Specifically, since the inclination angle value of the first battery foreign object detection unit is α, and 10° ≤ α ≤ 80°, specifically 45° in the present application, and the second battery foreign object detection unit is directly opposite to the battery. Therefore, when the first battery foreign object detection unit detects foreign objects on the battery, when the rotating mechanism 7 drives the battery in the battery carrier 2 to rotate 180°, the image effect presented is the best; when the second battery foreign object detection unit detects foreign objects on the battery, when the rotating mechanism 7 drives the battery in the battery carrier 2 to rotate 90°, the image effect presented is the best.

[0044] Please refer to Figure 2 、 Figure 3 and Figure 4, in one embodiment of the present utility model, the battery carrier 2 includes: a sliding seat 201 which is slidably engaged with the slide rail 1; a carrier bracket 203 which is misaligned and connected to the sliding seat 201; at least one bearing unit, the bearing unit includes two bearings 204, both of the two bearings 204 in the bearing unit are connected to the carrier bracket 203 along the horizontal direction and are arranged at intervals in the height direction, and a battery can be carried between the two bearings 204 through a fixing member; a first rotating member 205 corresponding to the bearing unit one by one, which is coaxially connected to one end of the bearing unit, and the first rotating member 205 can drive the battery in the bearing unit to rotate horizontally.

[0045] Specifically, in order to prevent interference between the first rotating member 205 and the slide rail 1 or the battery carrier 2 when the first rotating member 205 contacts the rotating mechanism, the carrier bracket 203 is misaligned and connected to the sliding seat 201. Specifically, the carrier bracket 203 can be connected to one end of the top side of the sliding seat 201 close to the rotating mechanism 7, as long as interference with other components can be avoided when the first rotating member 205 contacts the rotating mechanism 7.

[0046] Please refer to Figure 5 , in one embodiment of the present utility model, the rotating mechanism 7 includes: a connecting seat 701 which is located on one side of the slide rail 1; a connecting bracket which is slidably connected to the connecting seat 701 along the horizontal direction; a cylinder 704 which is fixedly connected to the connecting seat 701, and the output end of the cylinder 704 is fixedly connected to the connecting bracket through a connecting block 705. Driven by the cylinder 704, the connecting bracket can slide close to or away from the slide rail 1; a second rotating member 708 corresponding to the first rotating member 205 one by one, which is rotatably connected to the connecting bracket; a motor 706 which drives the second rotating member 708 to rotate through a transmission mechanism; when the connecting bracket slides close to the slide rail 1, the second rotating member 708 contacts the first rotating member 205; when the connecting bracket slides away from the slide rail 1, the second rotating member 708 is separated from the first rotating member 205.

[0047] Specifically, the connecting bracket includes a first connecting plate 703 and a bracket 707. The first connecting plate 703 is used to carry the motor 706, the transmission mechanism and the second rotating member 708. And the connecting bracket is slidably engaged with the first slideway 702 at the top of the connecting seat 701 through a slider at the bottom. Driven by the cylinder 704, the connecting bracket can slide close to or away from the slide rail 1, and the first rotating member 205 and the second rotating member 708 contact or separate, so as to achieve the purpose of driving the battery to rotate.

[0048] More specifically, the transmission mechanism is set in a transmission form where multiple rotating shafts cooperate with transmission wheels and transmission belts, or it can also be set in a chain drive or gear drive form, which can be specifically selected according to needs.

[0049] Please refer to Figure 7 , in one embodiment of the present invention, the second ray emitting device 5 is slidably connected to a first slideway 803, and the first slideway 803 is arranged along the height direction.

[0050] Specifically, in order to be able to collect images of the upper, middle, and lower parts on the side of the battery, in this application, by setting that the second ray emitting device 5 is slidably connected to a first slideway 803, and the first slideway 803 is arranged along the height direction, it is possible to more accurately collect images of the parts of the battery to be detected.

[0051] Please refer to Figure 8 , in one embodiment of the present invention, the second ray receiving device 6 is slidably connected to a third slideway 1003, and the third slideway 1003 is arranged along the height direction.

[0052] Specifically, in order to be able to collect images of the upper, middle, and lower parts on the side of the battery corresponding to the position of the second ray emitting device 5 when collecting images, in this application, by setting that the second ray receiving device 6 is slidably connected to a third slideway 1003, and the third slideway 1003 is arranged along the height direction, it is possible to more accurately collect images of the parts of the battery to be detected.

[0053] In one embodiment of the present invention, the third slideway 1003 is slidably connected to the second slideway 901 through a connecting slider. The second slideway 901 is horizontally arranged. When the slider slides on the second slideway 901, it can drive the third slideway 1003 to slide closer to or away from the battery carrier 2.

[0054] Specifically, in order to be able to adjust the size of the images of the parts of the battery to be detected collected, in this application, the third slideway 1003 is slidably connected to the second slideway 901 through a connecting slider. The second slideway 901 is horizontally arranged, which can drive the third slideway 1003 to slide closer to or away from the battery carrier 2, and can magnify or reduce the collected images, so that the detection result is more accurate.

[0055] The above are only the embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A foreign body detection device for negative busbar of large cylindrical battery, characterized in that: include: Slide rail (1); A battery carrier (2) which is slidably connected to the slide rail (1), and the battery carrier (2) is used to carry at least one battery; A first battery foreign matter detection unit, wherein the first battery foreign matter detection unit comprises: A first ray emitting device (3) and a first ray receiving device (4) are arranged opposite to each other and are located on both sides of the slide rail (1), respectively; the first ray emitting device (3) is arranged opposite to the bottom of the battery and is inclined relative to the plane where the bottom of the battery is located; the first ray emitting device (3) is used to emit X-rays, and the first ray receiving device (4) is used to receive X-rays.

2. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 1 is characterized in that: The number of the first battery foreign object detection units is multiple, a rotating mechanism (7) is provided between two adjacent first battery foreign object detection units, the battery carrier (2) is rotationally connected to the battery, and the rotating mechanism (7) is used to drive the battery in the battery carrier (2) to rotate.

3. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 1 is characterized in that: The battery further includes a second battery foreign matter detection unit, wherein the second battery foreign matter detection unit includes: A second ray emitting device (5) and a second ray receiving device (6) are arranged opposite to each other and are located on both sides of the slide rail (1), respectively; the second ray emitting device (5) is used to emit X-rays, and the second ray receiving device (6) is used to receive X-rays; the second ray emitting device (5) is arranged opposite to a vertical plane where the side surface of the battery is located.

4. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 3 is characterized in that: The number of the second battery foreign object detection units is multiple, a rotating mechanism (7) is provided between two adjacent second battery foreign object detection units, the battery carrier (2) is rotationally connected to the battery, and the rotating mechanism (7) is used to drive the battery in the battery carrier (2) to rotate.

5. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 2 or 4, characterized in that: The rotating mechanism (7) drives the battery in the battery carrier (2) to rotate 90° or 180°.

6. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 2 or 4, characterized in that: The battery carrier (2) comprises: A slide seat (201) which is slidably matched with the slide rail (1); A carrier bracket (203) which is staggeredly connected to the slide seat (201); At least one bearing unit, the bearing unit comprising two bearings (204), the two bearings (204) in the bearing unit being connected to the carrier bracket (203) in a horizontal direction and arranged at intervals in a height direction, and a battery being supported between the two bearings (204) via a fixing member; A first rotating member (205) corresponding one-to-one to the bearing unit is coaxially connected to one end of the bearing unit, and the first rotating member (205) drives the battery in the bearing unit to rotate horizontally.

7. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 6 is characterized in that: The rotating mechanism (7) comprises: A connecting seat (701) located on one side of the slide rail (1); A connecting bracket, which is slidably connected to the connecting seat (701) in a horizontal direction; A cylinder (704) is fixedly connected to the connecting seat (701); an output end of the cylinder (704) is fixedly connected to the connecting bracket via a connecting block (705); driven by the cylinder (704), the connecting bracket slides toward or away from the slide rail (1); a second rotating member (708) corresponding one-to-one to the first rotating member (205) and rotatably connected to the connecting bracket; a motor (706) which drives the second rotating member (708) to rotate via a transmission mechanism; When the connecting bracket slides close to the slide rail (1), the second rotating member (708) contacts the first rotating member (205); When the connecting bracket slides away from the slide rail (1), the second rotating member (708) is separated from the first rotating member (205).

8. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 3 is characterized in that: The second ray emitting device (5) is slidably connected to a first slideway (803), and the first slideway (803) is arranged along the height direction.

9. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 8 is characterized in that: The second ray receiving device (6) is slidably connected to a third slideway (1003), and the third slideway (1003) is arranged along the height direction.

10. The foreign body detection device for the negative busbar of a large cylindrical battery according to claim 9, characterized in that: The third slide (1003) is slidably connected to the second slide (901) via a connecting sliding block. The second slide (901) is horizontally arranged. When the sliding block slides on the second slide (901), it drives the third slide (1003) to slide closer to or away from the battery carrier (2).

Images