Radioactive source box

Abstract

The present application discloses a radioactive source box, belonging to the technical field of battery detection equipment. The radioactive source box includes a first box body formed with a first opening; a containing member disposed in the first box body, the containing member being formed with a communicating accommodation cavity and a second opening, the accommodation cavity being used for accommodating the radioactive source; a shielding body filled between the containing member and the first box body; and a driving mechanism for driving the containing member to rotate so that the second opening corresponds to the first opening or the second opening is covered by the shielding body. The radioactive source box includes a first box body formed with a first opening, a containing member disposed in the first box body, the containing member being formed with a communicating accommodation cavity and a second opening, the accommodation cavity being used for accommodating the radioactive source. The risk of radiation pollution caused by the radiation released from the radioactive source leaking to the outside of the first box body through the first opening is reduced, and the radiation protection performance of the radioactive source box is improved.

Description

Technical Field

[0001] This application relates to the technical field of battery detection equipment, and particularly relates to a radiation source box. Background Art

[0002] In the production process of battery electrodes, coating is an essential process and a key process that directly affects various performances of the battery, such as safety, capacity, and lifespan. After the electrode coating process is completed, a surface density meter is generally used to detect the consistency of the electrode coating quality.

[0003] A surface density meter usually has a radiation source, which is generally installed in a radiation source box. Once the radiation released by the radiation source leaks from the inside of the radiation source box to the outside of the radiation source box, it will cause radiation pollution to the environment.

[0004] Therefore, how to improve the radiation protection performance of the radiation source box is an urgent problem to be solved. Summary of the Invention

[0005] In view of the above problems, this application provides a radiation source box that can improve the radiation protection performance of the radiation source box.

[0006] In a first aspect, this application provides a radiation source box, which includes a first box body formed with a first opening; a containing member disposed in the first box body, the containing member being formed with a communicating containing cavity and a second opening, the containing cavity being used for accommodating a radiation source; a shielding body filled between the containing member and the first box body; and a driving mechanism for driving the containing member to rotate so that the second opening corresponds to the first opening or the second opening is covered by the shielding body.

[0007] In the technical solution of the embodiment of this application, the radiation source box includes a first box body formed with a first opening, a containing member disposed in the first box body, the containing member being formed with a communicating containing cavity and a second opening, the containing cavity being used for accommodating a radiation source. The shielding body is filled between the containing member and the first box body. The driving member drives the containing member so that the second opening corresponds to the first opening, and the rays emitted by the radiation source can sequentially pass through the second opening and the first opening to detect the consistency of the coating quality of the electrode. The driving member drives the containing member to rotate so that the second opening is covered by the shielding body, causing the radiation released by the radiation source to basically fall on the shielding body, reducing the risk of radiation pollution caused by the radiation released by the radiation source leaking from the first opening to the outside of the first box body, and improving the radiation protection performance of the radiation source box.

[0008] In some embodiments, at least a part of the outer side wall of the accommodating member adjacent to the second opening is arc-shaped, so that the accommodating member can rotate along at least a part of the outer side wall. With such a design, during the process of the driving mechanism driving the accommodating member to rotate, the arc-shaped outer side wall of the accommodating member can rotate in a state of being attached to the shielding body, reducing the risk that the radiation released by the radiation source passes through the gap between the accommodating member and the shielding body and exits the first opening during the rotation of the accommodating member, resulting in radiation leakage.

[0009] In some embodiments, the accommodating member is a spherical segment body, and the accommodating cavity is formed in the plane of the spherical segment body. With such a design, most of the outer surface of the accommodating member is arc-shaped, and most of the outer surface of the accommodating member can be attached to the shielding body during the process of the driving mechanism driving the accommodating member to rotate, further reducing the possibility that the radiation released by the radiation source passes through the gap between the accommodating member and the shielding body and exits the first opening.

[0010] In some embodiments, a transition fit is provided between the accommodating member and the shielding body. With such a design, the gap between the accommodating member and the shielding body is basically eliminated, the risk of radiation leakage is reduced, and the radiation protection performance of the radiation source box is improved.

[0011] In some embodiments, when the accommodating member rotates from the position where the second opening corresponds to the first opening to the position where the second opening is covered by the shielding body, the rotation angle is 60° to 300°. With such a design, during the process of the second opening switching from the state corresponding to the first opening to the state where the second opening is covered by the shielding body, when the accommodating member rotates at any angle between 60° and 300°, the radiation released by the radiation source can be blocked by the shielding body, reducing the risk that due to the transmission error of the driving mechanism, the second opening cannot be covered by the shielding body, resulting in radiation leakage. At the same time, the design requirement for the transmission accuracy of the driving mechanism is reduced.

[0012] In some embodiments, the first opening is formed in the first wall body of the first box body. When the second opening corresponds to the first opening, the distance between the plane of the spherical segment body and the outer surface of the first wall body is less than the wall thickness of the first wall body. With such a design, the risk that due to the excessive distance between the plane of the spherical segment body and the outer surface of the first wall body, the distance between the second opening and the electrode plate to be detected is increased, resulting in a reduction in the detection accuracy of the consistency of the electrode plate coating quality is reduced.

[0013] In some embodiments, the driving mechanism includes a first rotating shaft, and the first rotating shaft penetrates through the first box body and the shielding body to be connected to the spherical segment body, and the axis of the first rotating shaft is parallel to the plane of the spherical segment body. With such a design, most of the components of the driving mechanism can be arranged outside the first box body, without occupying the space inside the first box body, so that most of the space inside the first box body can be provided with a shielding body, improving the shielding effect of the radiation source box.

[0014] In some embodiments, wear-resistant layers are provided on the outer surfaces of the spherical segment and the first rotating shaft. Such a design improves the smoothness of the rotation of the spherical segment and the first rotating shaft within the shielding body, and reduces the risk of radiation released by the radiation source leaking from the worn area due to wear on the outer surfaces of the spherical segment and the first rotating shaft.

[0015] In some embodiments, a fixing member is provided on the inner edge of the second opening, and the fixing member is used to fix the radiation source. When the second opening corresponds to the first opening, such a design reduces the risk of reducing the detection accuracy of the consistency of the coating quality of the electrode due to the radiation source shaking caused by the rotation of the accommodating member.

[0016] In some embodiments, the radiation source box further includes a second box body. A third opening is formed on the second wall body of the second box body, and the third opening is correspondingly arranged with the first opening. The driving mechanism is arranged within the second box body. Such a design protects the driving mechanism by the second box body, reduces the maintenance frequency of the driving mechanism, and the third opening can also allow the rays to pass through.

[0017] In some embodiments, the first opening is formed on the first wall body of the first box body. When the second opening corresponds to the first opening, the outer surface of the first wall body and the outer surface of the second wall body are coplanar. Such a design reduces the risk of reducing the detection accuracy of the consistency of the coating quality of the electrode due to the increase in the distance between the outer surface of the first wall body and the outer surface of the second wall body, resulting in an increase in the distance between the second opening and the electrode to be detected when the second opening corresponds to the first opening.

[0018] In some embodiments, the driving mechanism further includes a lifting member for driving the first box body to move in a direction close to or away from the third opening. Such a design, when the second opening corresponds to the first opening, the lifting member can drive the first box body close to the third opening, reduce the distance between the second opening and the electrode to be detected, and reduce the risk of reducing the detection accuracy of the consistency of the coating quality of the electrode due to the excessive distance between the second opening and the electrode to be detected.

[0019] In some embodiments, the driving mechanism further includes a linkage member, which is configured to cause the accommodating member to rotate with the first rotating shaft as the lifting member drives the first box body to move, so that when the second opening corresponds to the first opening, the first box body is close to the third opening, and when the second opening is covered by the shielding body, the first box body is away from the third opening. Such a design, while the linkage member rotates the accommodating member, it will also lift with the first box body, and the rotation and lifting of the accommodating member are carried out simultaneously, reducing the number of driving sources of the driving mechanism and reducing the control difficulty of the driving mechanism.

[0020] In some embodiments, the linkage member includes a meshing rack and gear. The rack extends perpendicular to the main surface of the second wall. The gear is coaxial with the first rotating shaft that drives the first housing, so that the first rotating shaft rotates with the gear. This design allows the gear to rotate with the first rotating shaft while simultaneously rising and falling along the rack, achieving the effect of simultaneously rotating and raising the accommodating member. Using a gear and rack to achieve this effect provides a simple structure and a long service life.

[0021] In some embodiments, the linkage member further includes a stopper configured to limit the position of the gear relative to the first rotating shaft in the circumferential direction of the first rotating shaft. This design reduces the risk of transmission errors in the linkage member caused by circumferential movement of the gear in the first rotating shaft, which could result in improper rotation and lifting of the accommodating member, thereby reducing the risk of radiation leakage.

[0022] In some embodiments, the retaining member is a key, with a first retaining groove formed on the first rotating shaft and a second retaining groove formed on the gear. A portion of the key is accommodated in the first retaining groove, while the remaining portion is accommodated in the second retaining groove. This design, with a portion of the key accommodated in the first retaining groove and the remaining portion in the second retaining groove, reduces the risk of the gear wobbling around the circumference of the first rotating shaft. Furthermore, the key has a simple structure and is easy to manufacture.

[0023] In some embodiments, the lifting member includes a cam abutting the first housing and configured to rotate about a cam axis parallel to the main surface of the second wall; and a drive source in transmission connection with the cam for driving the cam to rotate. By properly designing the cam profile, the lifting and lowering of the first housing can be achieved, resulting in a compact transmission structure and high transmission efficiency.

[0024] In some embodiments, the second housing further includes a third wall disposed opposite the second wall, the radiation source housing further includes a bracket disposed on the third wall, and the lifting member further includes a second rotating shaft extending through the bracket and the cam and connected to the drive source. With this design, the drive source drives the second rotating shaft to rotate the cam, thereby achieving lifting and lowering of the first housing, resulting in a compact transmission structure and high transmission efficiency.

[0025] In some embodiments, the radiation source housing further comprises a first elastic member connected to the first housing for providing an elastic force toward the cam. In the event of a drive source failure, the elastic force provided by the first elastic member to the first housing can drive the first housing upward, causing the housing to rotate with the rise of the first housing, so that the second opening is covered by the shielding body. This design reduces the risk of radiation leakage due to a drive source failure that renders the housing immobile.

[0026] In some embodiments, the radiation source cartridge further includes a guiding assembly connected to the first cartridge body for guiding the first cartridge body in the vertical direction of the main surface of the second wall body. Such a design improves the movement accuracy of the first cartridge body and reduces the risk that the radiation released by the radiation source leaks to the outside of the second cartridge body through the third opening due to the failure of the first cartridge body to move into place.

[0027] In some embodiments, the guiding assembly includes a guiding block and a guiding shaft. One of the guiding block and the guiding shaft is connected to the second cartridge body, and the other is connected to the first cartridge body. The guiding shaft is disposed through the guiding block. Such a design enables the first cartridge body to move along the axis of the guiding shaft during the lifting process, reducing the risk of radiation leakage caused by the skewing of the first cartridge body during lifting, resulting in the failure of the first cartridge body to move into place.

[0028] In some embodiments, a first elastic member is disposed around the guiding shaft. The guiding block is formed with a receiving groove, which includes a first groove section and a second groove section. The second groove section is located on the side of the first groove section close to the second wall body, and the diameter of the second groove section is larger than that of the first groove section. The guiding shaft is disposed through the receiving groove, and at least a part of the first elastic member is received in the second groove section. Such a design makes the deformation direction of the first elastic member substantially consistent with the axis of the guiding shaft. Moreover, at least a part of the first elastic member being received in the second groove section can reduce the risk of excessive deformation of the first elastic member and improve the service life of the first elastic member.

[0029] In some embodiments, the guiding assembly further includes a guiding sleeve disposed between the guiding shaft and the guiding block. The guiding sleeve can improve the smoothness of the guiding block moving along the guiding shaft.

[0030] In some embodiments, the guiding sleeve includes a first sleeved portion and a second sleeved portion. The first sleeved portion is disposed in the first groove section, and the second sleeved portion is disposed in the second groove section and abuts against the first elastic member. The cooperation between the first sleeved portion and the first groove section, and the cooperation between the second sleeved portion and the second groove section reduce the risk of skewing of the guiding sleeve.

[0031] In some embodiments, the radiation source cartridge further includes a protective film covering the third opening. Such a design enables the protective film to cover the third opening to reduce the risk of dust entering the inside of the second cartridge body through the third opening, resulting in increased wear of the driving mechanism.

[0032] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Also, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0034] Figure 1 is a partial cross-sectional view of a radiation source box according to some embodiments of the present application;

[0035] Figure 2 is an axonometric view of a receiving member according to some embodiments of the present application;

[0036] Figure 3 is a partial cross-sectional view of a radiation source box according to some embodiments of the present application, showing the position of the second opening when the rotation angle of the receiving member is 60°;

[0037] Figure 4 is a partial cross-sectional view of a radiation source box according to some embodiments of the present application, showing the position of the second opening when the rotation angle of the receiving member is 300°;

[0038] Figure 5 is a partial cross-sectional view of a radiation source box according to some other embodiments of the present application;

[0039] Figure 6 is an exploded view of a part of a radiation source box according to some embodiments of the present application;

[0040] Figure 7 is an axonometric schematic diagram of a part of a radiation source box according to some embodiments of the present application;

[0041] Figure 8 is a top view of a part of a radiation source box according to some embodiments of the present application;

[0042] Figure 9 is an exploded view of a guiding component according to some embodiments of the present application;

[0043] Figure 10 is a partial cross-sectional view of a radiation source box according to some other embodiments of the present application;

[0044] Figure 11 is a partial cross-sectional view of a radiation source box according to some other embodiments of the present application. It shows the position of the second opening when the rotation angle of the receiving member is 40°;

[0045] Figure 12 is a partial cross-sectional view of a radiation source box according to some other embodiments of the present application. It shows the position of the second opening when the rotation angle of the receiving member is 180°.

[0046] The reference numerals in the specific embodiments are as follows:

[0047] 1 - First box body; 11 - First opening; 12 - First wall body; 2 - Accommodating member; 21 - Second opening; 22 - Spherical segment body; 3 - Radiation source; 4 - Shielding body; 5 - Driving mechanism; 51 - First rotating shaft; 511 - First limiting groove; 52 - Lifting member; 521 - Cam; 522 - Driving source; 523 - Second rotating shaft; 53 - Linkage member; 531 - Gear; 5311 - Second limiting groove; 532 - Rack; 533 - Limiting member; 5331 - Key body; 6 - Fixing member; 7 - Second box body; 71 - Third opening; 72 - Second wall body; 73 - Third wall body; 8 - First elastic member; 9 - Bracket; 10 - Guide assembly; 101 - Guide block; 102 - Guide shaft; 1011 - Accommodating groove; 10111 - First groove section; 10112 - Second groove section; 103 - Guide sleeve; 1031 - First socket part; 1032 - Second socket part. Detailed implementation manners

[0048] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0050] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality" means more than two, unless otherwise specifically defined.

[0051] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0052] In the description of the embodiments of this application, the term "a plurality" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0053] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application 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, and therefore cannot be construed as a limitation on the embodiments of the present application.

[0054] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also 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 elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0055] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in many fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing.

[0056] Coating is to coat a thin layer of coating material on the surface of objects such as fabrics, papers, metal foils or plates in the form of liquid or powder. And coating is an indispensable step in the manufacturing process of battery cells.

[0057] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode plate, a negative electrode plate and a separator. The battery cell mainly works by the movement of metal ions between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on a part of the surface of the positive electrode current collector, and the positive electrode current collector without the coated positive electrode active material layer serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on a part of the surface of the negative electrode current collector, and the negative electrode current collector without the coated negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc.

[0058] In the production process of battery cells, the coating process is precisely used to coat the positive active material on the positive current collector and the negative active material on the negative current collector. That is, the prepared paste-like viscous slurry (positive active material or negative active material) is evenly coated on the substrate (positive current collector or negative current collector) continuously or intermittently. When coating, it is necessary to ensure the thickness consistency at each coating position and control the coating thickness within the tolerance range required by the process.

[0059] After the electrode sheet is completed with coating processing, a surface density meter is needed to detect the consistency of the coating quality of the electrode sheet (consistency of surface density). There are many types of surface density meters, such as X-ray surface density meters, β-ray surface density meters, ultrasoft X-ray surface density meters, etc. The surface density meter usually has a radiation source, and the radiation source is generally installed in a radiation source box. Taking the β-ray surface density meter as an example, the β-ray surface density meter calculates the surface density of the electrode sheet by detecting the intensity of the radiation source rays before and after passing through the electrode sheet. The β-ray surface density meter commonly uses natural radiation sources, such as Kr85 (krypton-85). Kr85 is an inactive, radioactive inert gas with a half-life of 10.76 years. Due to the β particles and bremsstrahlung generated by the decay of the Kr85 isotope, it will cause radiation pollution to the environment. Therefore, the radiation source box used to install the radiation source generally has high radiation protection performance.

[0060] The present inventor noticed that for the current radiation source box, when the surface density meter stops detecting, a lead-sealing treatment is adopted at the outlet of the radiation source to reduce radiation leakage. There are many ways of lead-sealing treatment. For example, using a lead plate to block the outlet of the radiation source, etc. However, after some surface density meters stop detecting, the inventor uses a radiation detector to detect the radiation value near it, and the obtained detection result exceeds the normal value. This shows that the current radiation source box has poor radiation protection performance and a high risk of radiation leakage.

[0061] The inventor's research found that the reason for the poor radiation protection performance of the current radiation source box may be that the lead plate used for lead-sealing treatment has a poor radiation protection effect on the radiation released by the radiation source. The inventor further studied and found that the reason for the above problem is that a flat surface of the lead plate is used to cover the outlet of the radiation source for radiation protection. Due to processing errors, there may be a gap between the lead plate and the outlet of the radiation source. And when translating the lead plate, in order to avoid collision between the lead plate and the radiation source, a gap is reserved between the lead plate and the outlet of the radiation source. The existence of the gap indicates that the flat surface of the lead plate cannot completely cover the outlet, and the radiation released by the radiation source may leak from the gap to the outside of the radiation source box.

[0062] Based on the above considerations, in order to solve the problem of the poor radiation protection performance of the current radioactive source box, the inventor has conducted in-depth research and designed a radioactive source box. The radioactive source box includes a box body and a first opening provided on the box body. A containing member is provided inside the box body, and the containing member forms a communicating containing cavity and a second opening. The containing cavity is used to accommodate the radioactive source. A shielding body is also provided inside the box body, and the shielding body is filled between the containing member and the box body. During the detection by the surface density meter, the driving mechanism drives the containing member to rotate so that the first opening and the second opening correspond to each other, and the rays of the radioactive source can sequentially pass through the second opening and the first opening to detect the consistency of the coating quality of the pole piece. After the detection is completed, the driving mechanism drives the containing member to rotate so that the second opening is covered by the shielding body, and the radiation released by the radioactive source is blocked by the shielding body, reducing the risk of radiation pollution caused by the radiation released by the radioactive source leaking from the first opening to the outside of the box body, and improving the radiation protection performance of the radioactive source box.

[0063] According to some embodiments of the present application, please refer to Figure 1 , the present application provides a radioactive source box. The radioactive source box includes a first box body 1, which forms a first opening 11; a containing member 2, which is provided inside the first box body 1, and the containing member 2 forms a communicating containing cavity and a second opening 21. The containing cavity is used to accommodate the radioactive source 3; a shielding body 4, which is filled between the containing member 2 and the first box body 1; a driving mechanism 5, which is used to drive the containing member 2 to rotate so that the second opening 21 corresponds to the first opening 11, or so that the second opening 21 is covered by the shielding body 4.

[0064] The first box body 1 can be a rectangular box body, a cylindrical box body, a trapezoidal box body, etc., and the material of the first box body 1 can be stainless steel.

[0065] The first box body 1 can be formed by enclosing a plurality of wall bodies. After the plurality of wall bodies are enclosed, a containing space is formed, and the containing space is used to accommodate the containing member 2 and the shielding body 4.

[0066] The outer shape of the containing member 2 can be a cylinder, a spherical segment, etc., and the material of the containing member 2 can be aluminum alloy.

[0067] The outer surface of the containing member 2 has at least one second opening 21, and the inside of the containing member 2 has a containing cavity. The second opening 21 and the containing cavity are communicated, and the radioactive source 3 can be loaded into the containing cavity from the second opening 21.

[0068] The material of the shielding body 4 can be lead, etc., and the shielding body 4 can be integrally cast.

[0069] In some embodiments, the driving mechanism 5 may include a motor, a speed reducer, and a transmission shaft. The transmission shaft is connected to the accommodating member 2, the motor is drivingly connected to the input end of the speed reducer, and the output end of the speed reducer is drivingly connected to the transmission shaft. The accommodating member 2 can be driven to rotate by the motor, so that the second opening 21 can be switched between a state corresponding to the first opening 11 and a state covered by the shielding body 4.

[0070] The second opening 21 being covered by the shielding body 4 means that the outer surface of the accommodating member 2 provided with the second opening 21 is wrapped by the shielding body 4. Exemplarily, please refer to Figure 3 In the embodiment where the accommodating member 2 is a spherical segment 22, when the second opening 21 is in the position shown in Figure 3 the outer surface of the accommodating member 2 provided with the second opening 21 is wrapped by the shielding body 4.

[0071] In the technical solution of the embodiment of the present application, the radiation source box includes a first box body 1. The first box body 1 is formed with a first opening 11. The accommodating member 2 is disposed in the first box body 1. The accommodating member 2 is formed with a communicating accommodating cavity and a second opening 21. The accommodating cavity is used to accommodate the radiation source 3. The shielding body 4 is filled between the accommodating member 2 and the first box body 1. The driving member drives the accommodating member 2 to make the second opening 21 correspond to the first opening 11, and the rays emitted by the radiation source 3 can sequentially pass through the second opening 21 and the first opening 11 to detect the consistency of the coating quality of the pole piece. The driving member drives the accommodating member 2 to rotate so that the second opening 21 is covered by the shielding body 4, so that the radiation released by the radiation source 3 basically falls on the shielding body 4, reducing the risk of radiation pollution caused by the radiation released by the radiation source 3 leaking from the first opening 11 to the outside of the first box body 1, and improving the radiation protection performance of the radiation source box.

[0072] According to some embodiments of the present application, at least a part of the outer side wall of the accommodating member 2 adjacent to the second opening 21 is arc-shaped, so that the accommodating member 2 can rotate along at least a part of the outer side wall.

[0073] In some embodiments where the outer shape of the accommodating member 2 is a cylinder, the accommodating member 2 is the remaining part of the cylinder after the cylinder is intercepted by a plane parallel to the axis of the cylinder. The second opening 21 is located in a plane parallel to its axis of the remaining part of the cylinder, and both sides of the second opening 21 are arc-shaped. When the accommodating member 2 rotates, it can rotate along the axis of the cylinder.

[0074] With such a design, during the process of the driving mechanism 5 driving the accommodating member 2 to rotate, the arc-shaped outer side wall of the accommodating member 2 can rotate in a state of being attached to the shielding body 4, reducing the risk of radiation leakage caused by the radiation released by the radiation source 3 passing through the gap between the accommodating member 2 and the shielding body 4 and exiting the first opening 11 during the rotation of the accommodating member 2.

[0075] According to some embodiments of the present application, please refer to Figure 2, the accommodating member 2 is a spherical segment body 22, and the accommodating cavity is formed in the plane of the spherical segment body 22.

[0076] The accommodating cavity can be formed by turning or milling, or the accommodating cavity can also be integrally cast with the accommodating member 2.

[0077] With such a design, most of the outer surface of the accommodating member 2 is arc-shaped, which further reduces the possibility that the radiation released by the radiation source 3 passes through the gap between the accommodating member 2 and the shielding body 4 and exits the first opening 11.

[0078] According to some embodiments of the present application, the accommodating member 2 and the shielding body 4 are provided with an interference fit.

[0079] The interference fit means that the gap between the outer surface of the accommodating member 2 and the shielding body 4 is basically eliminated.

[0080] With such a design, the gap between the accommodating member 2 and the shielding body 4 is basically eliminated, the risk of radiation leakage is reduced, and the radiation protection performance of the radiation source box is improved.

[0081] According to some embodiments of the present application, please refer to Figure 3 and Figure 4 , when the accommodating member 2 rotates from the state where the second opening 21 corresponds to the first opening 11 to the state where the second opening 21 is covered by the shielding body 4, the rotation angle is 60° to 300°.

[0082] Please refer to Figure 3 , when the rotation angle of the accommodating member 2 is about 60°, the second opening 21 begins to be covered by the shielding body 4. Please refer to Figure 4 , when the rotation angle of the accommodating member 2 is about 300°, the second opening 21 is still covered by the shielding body 4. When the rotation angle of the accommodating member 2 is any angle between 60° and 300°, the second opening 21 will be covered by the shielding body 4.

[0083] With such a design, during the process of the second opening 21 switching from the state corresponding to the first opening 11 to the state where the second opening 21 is covered by the shielding body 4, when the accommodating member 2 rotates by any angle between 60° and 300°, the radiation released by the radiation source 3 can be blocked by the shielding body 4, reducing the risk of radiation leakage caused by the transmission error of the driving mechanism 5, which makes the second opening 21 unable to be covered by the shielding body 4. At the same time, the design requirements for the transmission accuracy of the driving mechanism 5 are reduced.

[0084] In other embodiments, the angle can also be adjusted according to the shape of the accommodating member 2 and the sizes of the first opening 11 and the second opening 21, which is not limited herein.

[0085] According to some embodiments of the present application, please refer to Figure 2, a first opening 11 is formed on a first wall 12 of the first box body 1. When the second opening 21 corresponds to the first opening 11, the distance between the plane of the spherical segment body 22 and the outer surface of the first wall 12 is less than the wall thickness of the first wall 12.

[0086] In some embodiments, please refer to Figure 2 , the distance between the plane of the spherical segment body 22 and the outer surface of the first wall 12 is less than the wall thickness of the first wall 12, which means that the plane of the spherical segment body 22 is located inside the first opening 11.

[0087] Specifically, the first opening 11 is larger than the second opening 21, so that a part of the spherical segment body 22 can be accommodated in the first opening 11, and further the plane of the spherical segment body 22 can be located in the first opening 11.

[0088] Such a design reduces the risk that due to the excessive distance between the plane of the spherical segment body 22 and the outer surface of the first wall 12, the distance between the second opening 21 and the electrode to be detected is increased, resulting in a reduction in the detection accuracy of the consistency of the electrode coating quality.

[0089] According to some embodiments of the present application, please refer to Figure 5 , the driving mechanism 5 includes a first rotating shaft 51. The first rotating shaft 51 penetrates through the first box body 1 and the shielding body 4 to be connected to the spherical segment body 22, and the axis of the first rotating shaft 51 is parallel to the plane of the spherical segment body 22.

[0090] The first rotating shaft 51 can be integrally formed with the spherical segment body 22, or the first rotating shaft 51 can be separately formed from the spherical segment body 22 and then connected by welding.

[0091] Such a design enables most components of the driving mechanism 5 to be arranged outside the first box body 1, without occupying the space inside the first box body 1, so that most of the space inside the first box body 1 can be provided with the shielding body 4, improving the shielding effect of the radiation source box.

[0092] According to some embodiments of the present application, wear-resistant layers are provided on the outer surfaces of the spherical segment body 22 and the first rotating shaft 51.

[0093] The material of the wear-resistant layer can be wear-resistant Teflon material.

[0094] Such a design improves the smoothness of the rotation of the spherical segment body 22 and the first rotating shaft 51 inside the shielding body 4, and reduces the risk that the radiation released by the radiation source 3 leaks from the worn area due to the wear on the outer surfaces of the spherical segment body 22 and the first rotating shaft 51.

[0095] According to some embodiments of the present application, a fixing member 6 is provided on the inner edge of the second opening 21, and the fixing member 6 is used to fix the radiation source 3.

[0096] The fixing member 6 can be fixed in the accommodating cavity by welding, or the fixing member 6 can also be fixedly installed in the accommodating cavity by fasteners.

[0097] The fixing member 6 can be a fixing ring, which is arranged on one side of the radiation source 3 facing the second opening 21, and has little influence on the ray emission of the radiation source 3.

[0098] When the second opening 21 corresponds to the first opening 11, such a design reduces the risk that the rotation of the accommodating member 2 causes the radiation source 3 to shake, resulting in a decrease in the detection accuracy of the consistency of the coating quality of the electrode plate.

[0099] According to some embodiments of the present application, please refer to Figure 5 and Figure 11 , the radiation source box further includes a second box body 7. A third opening 71 is formed on the second wall body 72 of the second box body 7. The third opening 71 is correspondingly arranged with the first opening 11, and the driving mechanism 5 is arranged in the second box body 7.

[0100] The second box body 7 can be a rectangular box body, a cylindrical box body, a trapezoidal box body, etc. The material of the second box body 7 can be stainless steel.

[0101] The second box body 7 can be formed by enclosing a plurality of wall bodies. After the plurality of wall bodies are enclosed, an accommodating space is formed, and the accommodating space is used to accommodate the first box body 1 and the driving mechanism 5.

[0102] The correspondence between the third opening 71 and the first opening 11 means that when the second opening 21 corresponds to the first opening 11, the rays emitted by the radiation source 3 can sequentially pass through the second opening 21, the first opening 11, and the third opening 71 to detect the consistency of the coating quality of the electrode plate.

[0103] With such a design, the second box body 7 protects the driving mechanism 5, reduces the maintenance frequency of the driving mechanism 5, and can also play roles such as waterproofing and dustproofing.

[0104] According to some embodiments of the present application, please refer to Figure 5 , Figure 10 and Figure 11 , the first opening 11 is formed on the first wall body 12 of the first box body 1. When the second opening 21 corresponds to the first opening 11, the outer surface of the first wall body 12 is coplanar with the outer surface of the second wall body 72.

[0105] Please refer to Figure 10 and Figure 11 , when the second opening 21 corresponds to the first opening 11, the outer surface of the first wall body 12 is coplanar with the outer surface of the second wall body 72, which means that the wall thickness of the second wall body 72 does not increase the distance between the radiation source 3 and the electrode plate to be detected.

[0106] Such a design reduces the risk of reduced detection accuracy of the consistency of electrode coating quality due to an increase in the distance between the second opening 21 and the electrode to be inspected due to the distance between the outer surface of the first wall 12 and the outer surface of the second wall 72 being too large when the second opening 21 corresponds to the first opening 11, thereby reducing the risk of reduced detection accuracy of the consistency of electrode coating quality.

[0107] Specifically, the area of the third opening 71 is equal to the area of the outer side surface of the first wall 12 of the first box body 1, so that the first box body 1 can be embedded in the second box body 7, and the outer surface of the first wall 12 is coplanar with the outer surface of the second wall 72.

[0108] According to some embodiments of this application, please refer to Figure 5 、 Figure 10 and Figure 11 The driving mechanism 5 further includes a lifting member 52 for driving the first box body 1 to move toward or away from the third opening 71.

[0109] In some embodiments, the lifting member 52 includes a piston cylinder, which can be an air cylinder or an oil cylinder. The piston rod of the piston cylinder is connected to the first box body 1. The extension or contraction of the piston rod can drive the first box body 1 to move toward or away from the third opening 71.

[0110] In some embodiments, the lifting component 52 includes a lifting motor, a screw and a screw nut. The lifting motor is connected to the screw, and the screw nut is connected to the first box body 1. The rotation of the lifting motor drives the screw to rotate, and the rotation of the screw drives the screw nut to perform a lifting movement, thereby driving the first box body 1 to move toward or away from the third opening 71.

[0111] With this design, when the second opening 21 corresponds to the first opening 11, the lifting member 52 can drive the first box body 1 to approach the third opening 71, reducing the distance between the second opening 21 and the electrode to be inspected, thereby reducing the risk of reduced detection accuracy of the consistency of the electrode coating quality due to the excessive distance between the second opening 21 and the electrode to be inspected.

[0112] According to some embodiments of the present application, the driving mechanism 5 also includes a linkage member 53, which is configured to drive the first box body 1 to move along with the lifting member 52 to make the accommodating member 2 rotate along with the first rotating shaft 51, so that when the second opening 21 corresponds to the first opening 11, the first box body 1 is close to the third opening 71, and when the second opening 21 is covered by the shielding body 4, the first box body 1 is away from the third opening 71.

[0113] In some embodiments, the lifting member 52 includes a first lifting motor, a driving pulley, a driven pulley, and a synchronous belt. The driven pulley can also be considered as a part of the linkage member 53. The first lifting motor is in transmission connection with the driving pulley. The driven pulley is fixedly arranged on the first rotating shaft 51. The driving pulley and the driven pulley are in transmission connection through the synchronous belt. The first lifting motor drives the driving pulley to rotate, so that the synchronous belt makes a circumferential motion along with the rotation of the driving pulley. While the synchronous belt makes a circumferential motion, the driven pulley, the first rotating shaft 51, and the first box body 1 can achieve a lifting motion (the driven pulley rotates and lifts at the same time). While the first box body 1 is lifting, the rotation of the driven pulley will also cause the first rotating shaft 51 to rotate, and the first rotating shaft 51 is connected to the accommodating member 2, and the accommodating member 2 will rotate along with the rotation of the first rotating shaft 51. As long as the rotational freedom of the first box body 1 is restricted, the accommodating member 2 can rotate and lift along with the first box body 1 at the same time.

[0114] In some embodiments, the lifting mechanism includes a second lifting motor, a driving sprocket, a driven sprocket, and a chain. The second lifting motor is in transmission connection with the driving sprocket. The driven sprocket is fixedly arranged on the first rotating shaft 51. The driving sprocket and the driven sprocket are in transmission connection through the chain. The second lifting motor drives the driving sprocket to rotate, so that the chain makes a circumferential motion along with the rotation of the driving sprocket. While the chain makes a circumferential motion, the driven sprocket, the first rotating shaft 51, and the first box body 1 can achieve a lifting motion (the driven sprocket rotates and lifts at the same time). While the first box body 1 is lifting, the rotation of the driven sprocket will also cause the first rotating shaft 51 to rotate, and the first rotating shaft 51 is connected to the accommodating member 2, and the accommodating member 2 will rotate along with the rotation of the first rotating shaft 51. As long as the rotational freedom of the first box body 1 is restricted, the accommodating member 2 can rotate and lift along with the first box body 1 at the same time.

[0115] With such a design, the linkage member 53 enables the accommodating member 2 to rotate and lift along with the first box body 1 at the same time. The rotation and lifting of the accommodating member 2 are carried out simultaneously, reducing the number of drive sources 522 of the drive mechanism 5 and lowering the control difficulty of the drive mechanism 5.

[0116] According to some embodiments of the present application, please refer to Figure 5 and Figure 7 , the linkage member 53 includes a meshing rack 532 and a gear 531. The rack 532 extends along the vertical direction of the main surface of the second wall body. The gear 531 is coaxially arranged with the first rotating shaft 51 that drives the first box body 1 to rotate, so that the first rotating shaft 51 can rotate along with the gear 531.

[0117] The surface of the second wall body 72 facing the inside of the second box body 7 is the main surface of the second wall body.

[0118] While the lifting member 52 drives the first box body 1 to lift, the gear 531 will rotate and rise or fall on the rack 532, which means that while the first box body 1 lifts, the first rotating shaft 51 and the accommodating member 2 will rotate and rise or fall at the same time.

[0119] With such a design, the gear 531 can lift along the rack 532 while rotating with the first rotating shaft 51, achieving the effect that the rotation and lifting of the accommodating member 2 are carried out simultaneously. Using the gear 531 and the rack 532 to achieve the above effect, the structure is simple and the service life is long.

[0120] According to some embodiments of the present application, please refer to Figure 5 and Figure 6 , the linkage member 53 further includes a limiting member 533, and the limiting member 533 is used to limit the gear 531 relative to the first rotating shaft 51 in the circumferential direction of the first rotating shaft 51.

[0121] The setting of the limiting member 533 can reduce the risk of the gear 531 shaking relative to the first rotating shaft 51 in the circumferential direction of the first rotating shaft 51.

[0122] One or more limiting members 533 can be provided.

[0123] The limiting member 533 can be a key body 5331 or a screw. Exemplarily, the limiting member 533 is a screw, and the screw can be fixed on the first rotating shaft 51 through a step extending along the circumference of the gear 531.

[0124] With such a design, the risk that the linkage member 53 has a transmission error due to the gear 531 shaking in the circumferential direction of the first rotating shaft 51, resulting in the rotation and lifting of the accommodating member 2 not being in place, is reduced. Furthermore, the risk of radiation leakage is reduced.

[0125] According to some embodiments of the present application, please refer to Figure 5 and Figure 6 , the limiting member 533 is a key body 5331, a first limiting groove 511 is formed on the first rotating shaft 51, a second limiting groove 5311 is formed on the gear 531, a part of the key body 5331 is accommodated in the first limiting groove 511, and another part is accommodated in the second limiting groove 5311.

[0126] The key body 5331 can be a flat key or a spline key.

[0127] The cross-section of the key body 5331 can be rectangular, wedge-shaped, etc.

[0128] With such a design, by accommodating a part of the key body 5331 in the first limiting groove 511 and another part in the second limiting groove 5311, the risk of the gear 531 shaking in the circumferential direction of the first rotating shaft 51 is reduced.

[0129] According to some embodiments of the present application, please refer to Figure 7 , the lifting member 52 includes a cam 521, which abuts against the first box body 1 and is used for rotating around the axis of the cam 521. The axis of the cam 521 is parallel to the main surface of the second wall body; a driving source 522, which is in transmission connection with the cam 521 and is used for driving the cam 521 to rotate.

[0130] The driving source 522 can be an electric motor.

[0131] The curved surface of the cam 521 always abuts against the top surface of the first box body 1, and the first box body 1 can move up and down with the rotation of the cam 521.

[0132] As long as the contour of the cam 521 is reasonably designed, the lifting of the first box body 1 can be realized, the transmission structure is compact, and the transmission efficiency is high.

[0133] Exemplarily, the cam 521 is elliptical. The major axis of the elliptical cam 521 is parallel to the vertical direction, and the first box body 1 descends. When the major axis of the elliptical cam 521 is parallel to the horizontal direction, the first box body 1 ascends.

[0134] According to some embodiments of the present application, please refer to Figure 7 , the second box body 7 further includes a third wall body 73 disposed opposite to the second wall body 72. The radiation source box further includes a bracket 9 disposed on the third wall body 73. The lifting member 52 further includes a second rotating shaft 523, which passes through the bracket 9 and the cam 521 and is connected to the driving source 522.

[0135] In some embodiments, bearings can be provided at the ends of the bracket 9. The second rotating shaft 523 is disposed in the bearings. The driving source 522 drives the second rotating shaft 523 to rotate, and then the cam 521 can be driven to rotate.

[0136] With such a design, the driving source 522 drives the second rotating shaft 523 to drive the cam 521 to rotate, thereby realizing the lifting of the first box body 1. The transmission structure is compact, and the transmission efficiency is high.

[0137] According to some embodiments of the present application, please refer to Figure 5 , Figure 7 and Figure 12 , the radiation source box further includes a first elastic member 8. The first elastic member 8 is connected to the first box body 1 and is used for providing an elastic force towards the cam 521 to the first box body 1.

[0138] The first elastic member 8 is connected to the bottom wall of the second box body 7. The first elastic member 8 is always in a compressed state and always stores a force. The force stored by the first elastic member 8 can push the first box body 1 to move upward.

[0139] In the case of a failure of the drive source 522, the first elastic member 8 pushes the first box body 1 upward. While the first box body 1 moves upward, under the transmission of the linkage member 53, the first rotating shaft 51 and the accommodating member 2 rotate accordingly, and the second opening 21 will switch from the state corresponding to the first opening 11 to the state covered by the shielding body 4. Therefore, even if the drive source 522 fails, the radiation source box can shield the radiation released by the radiation source 3.

[0140] In some embodiments, the first elastic member 8 can also be connected to the top wall of the second box body 7, always in a stretched state, always storing a force, and the force stored by the first elastic member 8 can pull the first box body 1 upward.

[0141] The number of the first elastic members 8 can be multiple.

[0142] When the drive source 522 fails, the elastic force provided by the first elastic member 8 to the first box body 1 can drive the first box body 1 to rise, and the accommodating member 2 will rotate along with the rise of the first box body 1 so that the second opening 21 is covered by the shielding body 4. Such a design reduces the risk of radiation leakage caused by the failure of the drive source 522 and the inability of the accommodating member 2 to move.

[0143] According to some embodiments of the present application, the radiation source box further includes a guiding assembly 10. The guiding assembly 10 is connected to the first box body 1 and is used to guide the first box body 1 in the vertical direction of the main surface of the second wall body.

[0144] One or more guiding assemblies 10 can be provided. Exemplarily, please refer to Figure 8 , four guiding assemblies 10 are provided, and the four guiding assemblies 10 are located at the four corners of the first box body 1.

[0145] Such a design improves the movement accuracy of the first box body 1 and reduces the risk that the radiation released by the radiation source 3 leaks to the outside of the second box body 7 through the third opening 71 due to the inability of the first box body 1 to move in place.

[0146] According to some embodiments of the present application, the guiding assembly 10 includes a guiding block 101 and a guiding shaft 102. One of the guiding block 101 and the guiding shaft 102 is connected to the second box body 7, and the other is connected to the first box body 1, and the guiding shaft 102 is arranged through the guiding block 101.

[0147] In some embodiments, the guiding block 101 is connected to the second box body 7, the guiding shaft 102 is connected to the first box body 1, and the guiding shaft 102 passes through the guiding block 101 and is in sliding fit with the guiding block 101.

[0148] In some embodiments, please refer to Figure 9, the guiding block 101 is connected to the first box body 1, the guiding shaft 102 is connected to the second wall body 72 of the second box body 7, and the guiding shaft 102 passes through the guiding block 101 and is in sliding fit with the guiding block 101.

[0149] With such a design, the first box body 1 can move along the axis of the guiding shaft 102 during the lifting process, reducing the risk of radiation leakage caused by the deviation of the first box body 1 during lifting, resulting in the first box body 1 not moving into place.

[0150] According to some embodiments of the present application, the first elastic member 8 is disposed around the guiding shaft 102. The guiding block 101 is formed with a receiving groove 1011. The receiving groove 1011 includes a first groove section 10111 and a second groove section 10112. The second groove section 10112 is located on the side of the first groove section 10111 close to the second wall body 72. The diameter of the second groove section 10112 is larger than that of the first groove section 10111. The guiding shaft 102 passes through the receiving groove 1011, and at least a part of the first elastic member 8 is received in the second groove section 10112.

[0151] At least a part of the first elastic member 8 being received in the second groove section 10112 means that the second groove section 10112 can define the deformation direction of the first elastic member 8, causing the first elastic member 8 to deform substantially along the circumferential direction of the guiding shaft 102.

[0152] With such a design, the deformation direction of the first elastic member 8 is substantially consistent with the axis of the guiding shaft 102. Moreover, at least a part of the first elastic member 8 being received in the second groove section 10112 can reduce the risk of excessive deformation of the first elastic member 8 and improve the service life of the first elastic member 8.

[0153] According to some embodiments of the present application, please refer to Figure 9 , the guiding assembly 10 further includes a guiding sleeve 103, and the guiding sleeve 103 is disposed between the guiding shaft 102 and the guiding block 101.

[0154] The material of the guiding sleeve 103 can be a self-lubricating material, such as tin-copper alloy, high-strength brass with graphite, etc.

[0155] The guiding sleeve 103 can improve the smoothness of the movement of the guiding block 101 along the guiding shaft 102 and can also reduce the wear of the guiding shaft 102.

[0156] According to some embodiments of the present application, the guiding sleeve 103 includes a first socket portion 1031 and a second socket portion 1032. The first socket portion 1031 is disposed in the first groove section 10111, and the second socket portion 1032 is disposed in the second groove section 10112 and abuts against the first elastic member 8.

[0157] The first socket portion 1031 and the second socket portion 1032 can be formed by turning or can be integrally cast.

[0158] The first sleeve connection portion 1031 cooperates with the first slot section 10111 , and the second sleeve connection portion 1032 cooperates with the second slot section 10112 , thereby reducing the risk of the guide sleeve 103 being deflected.

[0159] According to some embodiments of the present application, the radiation source box further includes a protective film, which is arranged to cover the third opening 71 .

[0160] The protective film needs to allow the radiation from the radiation source 3 to pass through, and the material of the protective film can be polyimide.

[0161] With this design, the protective film can cover the third opening 71 to reduce the risk of dust entering the interior of the second box body 7 through the third opening 71 and causing increased wear of the drive mechanism 5 .

[0162] According to some embodiments of this application, please refer to Figures 5 to 12 The present application provides a radioactive source box, which includes a first box body 1, a second box body 7, a container 2, a drive mechanism 5, and a shielding member. The container 2 is arranged in the first box body 1. The container 2 is a spherical segment 22. The plane of the spherical segment 22 is formed with a communicating accommodating cavity and a second opening 21. The accommodating cavity is used to accommodate the radioactive source 3. The shielding member 4 is filled between the container 2 and the first box body 1. A first opening 11 is formed on the first wall 12 of the first box body 1, and a third opening 71 is formed on the second wall 72 of the second box body 7. The third opening 71 is arranged corresponding to the first opening 11. When the first opening 11, the second opening 21, and the third opening 71 correspond to each other, the radiation emitted by the radioactive source 3 can pass through the second opening 21, the first opening 11, and the third opening 71 in sequence to detect the consistency of the coating quality of the electrode.

[0163] The driving mechanism 5 includes a first rotating shaft 51 , a lifting member 52 and a linkage member 53 . The first rotating shaft 51 passes through the first box body 1 and the shielding body 4 to connect with the spherical segment 22 . The axis of the first rotating shaft 51 is parallel to the plane of the spherical segment 22 .

[0164] The lifting component 52 includes a cam 521 abutting against the first box body 1, a driving source 522 transmission-connected to the cam 521 and a second rotating shaft 523. The second box body 7 includes a third wall body 73 arranged opposite to the second wall body 72. A bracket 9 is provided on the third wall body 73. The second rotating shaft 523 passes through the bracket 9 and the cam 521 and is connected to the driving source 522.

[0165] The linkage member 53 includes an engaged rack 532 and a gear 531. The rack 532 extends along the vertical direction of the main surface of the second wall body. The gear 531 is coaxially arranged with the first rotating shaft 51 that drives the first box body 1 to rotate, and its rotational freedom in the circumferential direction of the first rotating shaft 51 is restricted by a key body 5331 to ensure that the rotation of the gear 531 can drive the first rotating shaft 51 to rotate.

[0166] The radiation source box further includes a first elastic member 8 and a guiding assembly 10. The first elastic member 8 is connected to the first box body 1 and is used to provide an elastic force towards the cam 521 to the first box body 1. The guiding assembly 10 includes a guiding block 101, a guiding shaft 102, and a guiding sleeve 103. The guiding block 101 is connected to the first box body 1, the guiding shaft 102 is connected to the second wall body 72 of the second box body 7, and the first elastic member 8 is arranged around the guiding shaft 102. The guiding block 101 is formed with a receiving groove 1011. The receiving groove 1011 includes a first groove section 10111 and a second groove section 10112. The second groove section 10112 is located on the side of the first groove section 10111 close to the second wall body 72. The diameter of the second groove section 10112 is larger than that of the first groove section 10111. The guiding shaft 102 passes through the receiving groove 1011. The guiding sleeve 103 includes a first sleeved portion 1031 and a second sleeved portion 1032. The first sleeved portion 1031 is arranged in the first groove section 10111, and the second sleeved portion 1032 is arranged in the second groove section 10112. One end of the first elastic member 8 extends into the second groove section 10112 and abuts against the first elastic member 8.

[0167] Please refer to Figure 10 , when the surface density meter detects the consistency of the coating quality of the electrode sheet, the second opening 21 corresponds to the first opening 11, and the rays of the radiation source 3 can pass through the second opening 21, the first opening 11, and the third opening 71 in sequence and shoot out of the radiation source box for detection. At this time, the distance between the plane of the spherical segment body 22 and the outer surface of the first wall body 12 is less than the wall thickness of the first wall body 12, and the outer surfaces of the first wall body 12 and the second wall body 72 are coplanar. The distance between the radiation source 3 and the electrode sheet is shortened as much as possible, ensuring the detection accuracy.

[0168] After the detection is completed, the driving source 522 drives the cam 521 to rotate. Under the action of the elastic force of the first elastic member 8, the first box body 1 rises. At the same time, under the transmission of the gear 531 and the rack 532, the first rotating shaft 51 rotates, and the second opening 21 on the accommodating member 2 gradually rotates towards the inside of the shielding body 4. Please refer to Figure 11 , when the accommodating member 2 rotates approximately 60°, the second opening 21 has been covered by the shielding body 4. The cam 521 continues to rotate. When the accommodating member 2 rotates 180°, please refer to Figure 12, the distance between the plane where the second opening 21 is located and the outer surface of the second wall 72 reaches the maximum value, and the first box body 1 is also at the highest position. This position is also the ideal position of the first box body 1 after it is driven by the first elastic member 8 to rise when the drive source 522 fails. When the accommodating member 2 rotates by an angle of 60° to 180°, the second opening 21 will be covered by the shielding body 4.

[0169] When a second detection is required, the cam 521 can be rotated in the reverse direction, and the accommodating member 2 will rotate from the Figure 12 position to the Figure 10 position again. At this time, the second opening 21 corresponds to the first opening 11 again, and the rays of the radiation source 3 can be emitted from the radiation source box, and the detection can start.

[0170] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A radioactive source box, characterized in that, Comprising: A first box body, formed with a first opening, and the first opening is formed on a first wall body of the first box body; A receiving member, disposed within the first box body, the receiving member being formed with a communicating receiving cavity and a second opening, and the receiving cavity is used for receiving a radiation source; A shielding body, filled between the receiving member and the first box body; A driving mechanism, configured to drive the receiving member to rotate, so that the second opening corresponds to the first opening, or so that the second opening is covered by the shielding body; A second box body, with a third opening formed on a second wall body of the second box body, the third opening being correspondingly arranged with the first opening, and the driving mechanism is disposed within the second box body; when the second opening corresponds to the first opening, an outer surface of the first wall body and an outer surface of the second wall body are coplanar; The driving mechanism further includes a lifting member, configured to drive the first box body to move in a direction close to or away from the third opening, the lifting member including a cam and a driving source, the cam abuts against the first box body, the cam is configured to rotate about a cam axis, and the cam axis is parallel to a main surface of the second wall body; the driving source is in transmission connection with the cam, and is configured to drive the cam to rotate; The driving mechanism further includes a linkage member, the linkage member is configured to cause the receiving member to rotate along a first rotating shaft as the lifting member drives the first box body to move, so that when the second opening corresponds to the first opening, the first box body is close to the third opening, and when the second opening is covered by the shielding body, the first box body is away from the third opening; The radiation source box further includes a first elastic member, the first elastic member is connected to the first box body, and is configured to provide an elastic force towards the cam to the first box body; The radiation source box further includes a guiding assembly, the guiding assembly is connected to the first box body, and is configured to guide the first box body in a direction perpendicular to the main surface of the second wall body.

2. The radioactive source cassette according to claim 1, wherein At least a part of an outer side wall of the receiving member adjacent to the second opening is arc-shaped, so that the receiving member can rotate along the at least part of the outer side wall.

3. The radioactive source cartridge according to claim 2, characterized in that, The receiving member is a spherical segment body, and the receiving cavity is formed on a plane of the spherical segment body.

4. The radioactive source cassette according to claim 3, characterized in that, A transition fit is provided between the receiving member and the shielding body.

5. The radioactive source cassette according to claim 3, characterized in that, When the receiving member rotates from when the second opening corresponds to the first opening to when the second opening is covered by the shielding body, the rotation angle is 60° to 300°.

6. The radioactive source cassette according to claim 3, characterized in that, The first opening is formed on the first wall body of the first box body, and when the second opening corresponds to the first opening, a distance between a plane of the spherical segment body and an outer surface of the first wall body is less than a wall thickness of the first wall body.

7. The radioactive source cartridge according to claim 3, characterized in that, The driving mechanism includes a first rotating shaft, the first rotating shaft penetrates through the first box body and the shielding body to be connected to the spherical segment body, and an axis of the first rotating shaft is parallel to the plane of the spherical segment body.

8. The radioactive source cartridge according to claim 7, characterized in that, A wear-resistant layer is provided on outer surfaces of the spherical segment body and the first rotating shaft.

9. The radioactive source cassette according to any one of claims 1-8, characterized in that, A fixing member is provided at an inner edge of the second opening, and the fixing member is used for fixing the radiation source.

10. The radioactive source cartridge according to claim 1, characterized in that, The linkage member includes a meshing rack and gear. The rack extends along the vertical direction of the main surface of the second wall body, and the gear is coaxially arranged with the first rotating shaft that drives the first box body to rotate, so that the first rotating shaft can rotate with the gear.

11. The radioactive source cartridge according to claim 10, characterized in that, The linkage member further includes a limiting member for limiting the gear relative to the first rotating shaft in the circumferential direction of the first rotating shaft.

12. The radioactive source cassette according to claim 11, characterized in that, The limiting member is a key body. A first limiting groove is formed on the first rotating shaft, and a second limiting groove is formed on the gear. A part of the key body is accommodated in the first limiting groove, and the other part is accommodated in the second limiting groove.

13. The radioactive source cassette according to claim 1, wherein The second box body further includes a third wall body disposed opposite to the second wall body. The radiation source box further includes a bracket disposed on the third wall body. The lifting member further includes a second rotating shaft that penetrates through the bracket and the cam and is connected to the driving source.

14. The radioactive source cartridge according to claim 1, wherein The guiding assembly includes a guiding block and a guiding shaft. One of the guiding block and the guiding shaft is connected to the second box body, and the other is connected to the first box body. The guiding shaft penetrates through the guiding block.

15. The radioactive source cassette according to claim 14, wherein The first elastic member is disposed around the guiding shaft. The guiding block is formed with a receiving groove, which includes a first groove section and a second groove section. The second groove section is located on the side of the first groove section close to the second wall body, and the diameter of the second groove section is larger than that of the first groove section. The guiding shaft penetrates through the receiving groove, and at least part of the first elastic member is accommodated in the second groove section.

16. The radioactive source cartridge according to claim 15, wherein, The guiding assembly further includes a guiding sleeve disposed between the guiding shaft and the guiding block.

17. The radioactive source cartridge according to claim 16, characterized in that, The guiding sleeve includes a first sleeved portion and a second sleeved portion. The first sleeved portion is disposed in the first groove section, and the second sleeved portion is disposed in the second groove section and abuts against the first elastic member.

18. The radioactive source cassette according to any one of claims 1-8, characterized in that, The radiation source box further includes a protective film that covers the third opening.

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