Solid-state battery depth scanning device

Abstract

The utility model relates to the technical field of solid-state battery detection, in particular to a solid-state battery depth scanning device which comprises a case, the top of the case is rotationally connected with a rotary table, a transposition mechanism is installed in the case, and a placing table is fixedly installed in the middle of the top of the rotary table. Positioning plates are slidably connected to the left and right ends of the top of the placement table, a to-be-detected solid-state battery is clamped between the two positioning plates, adjusting frames are fixedly mounted on the left and right sides of the case, and mounting frames are slidably connected to the top ends of the two adjusting frames; an ultrasonic transmitting probe and an ultrasonic receiving probe are respectively mounted on the opposite sides of the two groups of mounting frames; the indexing mechanism comprises a first motor fixedly installed in the machine box, and a rotating shaft is fixedly installed at the driving end of the first motor. By means of the design, the influence of surface defects can be avoided, the false imaging risk is reduced, and then the scanning detection precision is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of fixed battery detection technology, specifically to a solid-state battery depth scanning device. Background Technology

[0002] To ensure the safety of solid-state batteries, safety testing is required during their research, development, production, and use. Some commonly used voltage and current methods cannot detect problems such as electrolyte wetting, gas, and lithium plating in solid-state batteries. Ultrasonic equipment, due to its non-radioactive and gas-sensitive characteristics, is very suitable for detecting these problems in solid-state batteries. Solid-state battery depth scanning devices use ultrasonic equipment to deeply scan the internal material properties of solid-state batteries, such as the presence of gas. By placing ultrasonic probes on both sides of the object being inspected, one probe emits ultrasonic signals, and the other probe receives ultrasonic signals. Based on the principle of transmission imaging, the characteristics of the object being inspected are evaluated by analyzing the transmission signals.

[0003] Currently, when using ultrasonic depth scanning to inspect the interior of solid-state batteries, only one side of the battery is scanned to determine if there are internal defects. However, when there are scratches, dents, or other defects on the surface of the solid-state battery, the ultrasonic signal will be strongly reflected upon the first contact, obscuring internal structural features (such as electrolyte wetting state and lithium plating areas). This results in specular reflection interference. At the same time, the reflected signals from surface defects are superimposed on the signals from the internal multilayer structure, forming false images (such as misjudging gas areas or interface layering), creating shadow artifacts. As a result, existing ultrasonic depth scanning inspections of solid-state batteries suffer from low accuracy.

[0004] Therefore, it is of great importance to design a solid-state battery depth scanning device to address the above-mentioned shortcomings. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention designs a solid-state battery depth scanning device, which aims to solve the technical problem of low accuracy in existing solid-state battery detection using ultrasonic depth scanning.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A solid-state battery depth scanning device includes a chassis, a turntable rotatably connected to the top of the chassis, a rotation mechanism installed inside the chassis, a placement platform fixedly installed at the middle of the top of the turntable, positioning plates slidably connected to the left and right ends of the top of the placement platform, a solid-state battery to be tested sandwiched between the two sets of positioning plates, adjustment frames fixedly installed on the left and right sides of the chassis, mounting frames slidably connected to the top of the two sets of adjustment frames, and an ultrasonic transmitting probe and an ultrasonic receiving probe respectively installed on opposite sides of the two sets of mounting frames.

[0008] The indexing mechanism includes a first motor fixedly installed inside the chassis. A rotating shaft is fixedly installed on the drive end of the first motor. The top end of the rotating shaft is rotatably connected to the chassis and fixedly connected to a turntable. A support frame is fixedly installed inside the chassis and outside the rotating shaft. A photoelectric sensor is fixedly installed on the top end of the support frame. A sensing disk is fixedly installed on the outside of the rotating shaft at a position corresponding to the photoelectric sensor. The sensing disk has four sets of sensing slots inside.

[0009] As a preferred embodiment of this utility model, the induction disk is fixedly connected to the rotating shaft by a mounting sleeve, and the four sets of induction slots are equally spaced inside the induction disk.

[0010] As a preferred embodiment of this utility model, the front of the chassis is rotatably connected to an inspection door, and the bottom ends of both sets of adjustment brackets are fixedly connected to the chassis via connecting plates.

[0011] As a preferred embodiment of this utility model, a cylinder is fixedly installed inside the placement platform, and synchronous slides are slidably connected to both the left and right ends of the placement platform. The front ends of the two sets of synchronous slides are fixedly connected to the positioning plate, and one end of the cylinder is fixedly connected to one of the sets of synchronous slides. A transmission plate is rotatably connected to the middle of the placement platform, and transmission arms are installed between the transmission plate and the two sets of synchronous slides. The two ends of the two sets of transmission arms are rotatably connected to the synchronous slides and the transmission plate, respectively.

[0012] As a preferred embodiment of this utility model, a positioning baffle is fixedly connected to the rear end of the placement platform, and a first insulating plate is fixedly connected to the surface of both the placement platform and the positioning baffle.

[0013] As a preferred embodiment of this utility model, the bottom of both sets of positioning plates are slidably connected to the first insulating plate via a sliding groove, and a second insulating plate is fixedly connected to the opposite side of both sets of positioning plates.

[0014] As a preferred embodiment of this utility model, an adjusting screw is rotatably connected to the inner side of the adjusting frame, a second motor is fixedly installed at the bottom of the adjusting frame, and the driving end of the second motor is fixedly connected to the bottom end of the adjusting screw. The mounting frame is connected to the adjusting screw through a screw nut, and the mounting frame is slidably connected to the adjusting frame through a lifting groove. A laser ranging sensor is fixedly installed at the top of the opposite side of both sets of mounting frames.

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

[0016] This invention, through its design, allows the photoelectric sensor to detect the initial angle of the turntable via the four sets of sensing slots on the induction disk after power is turned on, confirming whether the rotation mechanism is in the zero position (default 0° position). Then, the solid-state battery to be tested is placed on top of the placement platform and fixed at its left and right ends using positioning plates. The ultrasonic transmitting probe and ultrasonic receiving probe are aligned, with the ultrasonic transmitting probe emitting high-frequency pulses and the ultrasonic receiving probe simultaneously acquiring transmission / reflection signals. Depth scanning detects internal defects (such as cracks and pores) in the solid-state battery. The first motor drives the rotating shaft to rotate the turntable, with each 90° rotation corresponding to the four sets of sensing slots on the induction disk 305. The four sets of sensing slots are distributed circumferentially at 90° intervals. The photoelectric sensor triggers a signal, activating the four detection surfaces (0° and 0°) on the four sides of the solid-state battery. The system performs switching scans at 90°, 180°, and 270°, and performs spatial domain correlation analysis on the signals from all four sides. If a region shows strong reflection only at a single angle, it is identified as surface interference and removed. For signal features common to multiple angles, it is identified as internal pores and its three-dimensional coordinates are marked. For example, if a region shows strong reflection only at a single angle (e.g., the signal amplitude on the 90° side is greater than 30% on the other three sides), and the proportion of short-term spike components is greater than 60%, it is identified as a scratch and removed. If the low-frequency components in the signals from multiple angles are consistent (fluctuation < 10%), it is identified as a pore / crack, and its three-dimensional coordinates are recorded. Finally, a three-dimensional image of the internal defects of the solid-state battery under test is generated based on the three-dimensional coordinates, thereby avoiding the influence of surface defects, reducing the risk of false imaging, and thus greatly improving the accuracy of scanning and detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the top structure of the turntable of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the chassis of this utility model;

[0020] Figure 4 This is a schematic diagram of the top structure of the placement platform of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the placement platform of this utility model.

[0022] In the diagram: 1. Chassis; 101. Inspection box door; 102. Connecting plate; 2. Turntable; 3. Indexing mechanism; 301. First motor; 302. Rotating shaft; 303. Support frame; 304. Photoelectric sensor; 305. Induction plate; 306. Induction groove; 307. Mounting sleeve; 4. Placement platform; 401. Cylinder; 402. Synchronous slide; 403. Transmission plate; 404. Transmission arm; 405. Positioning baffle; 406. First insulating plate; 407. Slide groove; 408. Second insulating plate; 5. Positioning plate; 6. Detecting solid-state battery; 7. Adjusting frame; 701. Adjusting screw; 702. Second motor; 703. Screw nut; 8. Mounting frame; 801. Lifting groove; 802. Laser rangefinder sensor; 9. Ultrasonic transmitting probe; 10. Ultrasonic receiving probe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Example: Please refer to Figures 1-5 This utility model provides a technical solution:

[0025] A solid-state battery depth scanning device includes a chassis 1, a turntable 2 rotatably connected to the top of the chassis 1, a rotation mechanism 3 installed inside the chassis 1, a placement platform 4 fixedly installed at the middle of the top of the turntable 2, positioning plates 5 slidably connected to the left and right ends of the top of the placement platform 4, a solid-state battery 6 to be tested sandwiched between the two sets of positioning plates 5, adjustment frames 7 fixedly installed on the left and right sides of the chassis 1, mounting frames 8 slidably connected to the top of the two sets of adjustment frames 7, and an ultrasonic transmitting probe 9 and an ultrasonic receiving probe 10 respectively installed on opposite sides of the two sets of mounting frames 8.

[0026] First, in this embodiment, the specific structure of the indexing mechanism 3 is as follows:

[0027] The indexing mechanism 3 includes a first motor 301 fixedly installed inside the housing 1. A rotating shaft 302 is fixedly installed on the drive end of the first motor 301. The top end of the rotating shaft 302 is rotatably connected to the housing 1 and fixedly connected to the turntable 2. A support frame 303 is fixedly installed inside the housing 1 and outside the rotating shaft 302. A photoelectric sensor 304 is fixedly installed on the top end of the support frame 303. A sensing disk 305 is fixedly installed on the outside of the rotating shaft 302 at a position corresponding to the photoelectric sensor 304. The sensing disk 305 has four sets of sensing slots 306 inside. The disk 305 is fixedly connected to the rotating shaft 302 via the mounting sleeve 307. Four sets of sensing slots 306 are equally spaced inside the sensing disk 305. After the power is turned on, the photoelectric sensor 304 detects the initial angle of the turntable 2 through the four sets of sensing slots 306 of the sensing disk 305 to confirm whether the rotation mechanism 3 is at the zero position (default 0° position). Then, the solid-state battery 6 to be tested is placed on the top of the placement platform 4 and fixed at its left and right ends using the positioning plate 5. The ultrasonic transmitting probe 9 and the ultrasonic receiving probe 10 are directly opposite each other. The ultrasonic transmitting probe 9 emits high-frequency pulses, and the ultrasonic receiving probe 10 synchronously collects the transmission signals. The system uses reflected / reflected signals for depth scanning to detect internal defects (such as cracks and pores) in the solid-state battery 6 under test. The first motor 301 drives the rotating shaft 302 to rotate the turntable 2. Each 90° rotation corresponds to the four sets of sensing slots 306 on the sensing disk 305. The four sets of sensing slots 306 are distributed circumferentially at 90° intervals. The photoelectric sensor 304 triggers a signal to switch and scan the four detection surfaces (0°, 90°, 180°, 270°) on the four sides of the solid-state battery 6. Spatial domain correlation analysis is performed on the signals from the four sides. If a certain area shows strong reflection only at a single angle, it is determined to be a surface defect. Interference is eliminated, and signal features common to multiple angles are identified as internal pores and their three-dimensional coordinates are marked. For example, if a region shows strong reflection only at a single angle (e.g., the signal amplitude on the 90° surface is 30% greater than that on the other three surfaces), and the proportion of short-term spike components is greater than 60%, it is identified as a scratch and eliminated. If the low-frequency components in the signals from multiple angles are consistent (fluctuation < 10%), it is identified as a pore / crack, and its three-dimensional coordinates are recorded. Finally, a three-dimensional image of the internal defects of the solid-state battery to be tested is generated based on the three-dimensional coordinates, thereby avoiding the influence of surface defects, reducing the risk of false imaging, and thus greatly improving the accuracy of scanning detection.

[0028] Furthermore, the front of the chassis 1 is rotatably connected to an inspection door 101, and the bottom ends of the two sets of adjustment brackets 7 are fixedly connected to the chassis 1 via connecting plates 102. The inspection door 101 can be opened to facilitate maintenance operations inside the chassis 1. The adjustment brackets 7 are fixed to both sides of the chassis 1 via connecting plates 102, so that the ultrasonic transmitting probe 9 and the ultrasonic receiving probe 10 face each other for scanning and detection.

[0029] Then, a cylinder 401 is fixedly installed inside the placement stage 4. Synchronous slides 402 are slidably connected to both the left and right ends of the placement stage 4. The front ends of the two sets of synchronous slides 402 are fixedly connected to the positioning plate 5. One end of the cylinder 401 is fixedly connected to one of the sets of synchronous slides 402. A transmission plate 403 is rotatably connected to the middle of the placement stage 4. Transmission arms 404 are installed between the transmission plate 403 and the two sets of synchronous slides 402. The two ends of the two sets of transmission arms 404 are rotatably connected to the synchronous slides 402 and the transmission plate 403, respectively. When the solid-state battery 6 to be tested is placed on the placement stage 4, the cylinder 401 is started to drive one set of synchronous slides 402 to move. Under the linkage of the transmission arms 404 and the transmission plate 403, the two sets of synchronous slides 402 are moved together synchronously, which facilitates the quick positioning of the solid-state battery 6 to be tested. At the same time, by fixing only the bottom end, the contact surface is reduced, thereby improving the accuracy of scanning and detection.

[0030] Furthermore, a positioning baffle 405 is fixedly connected to the rear end of the placement platform 4, and a first insulating plate 406 is fixedly connected to the surface of both the placement platform 4 and the positioning baffle 405. When positioning and fixing the solid-state battery 6 to be tested, it is placed on the placement platform 4 and its back is pressed against the positioning baffle 405 for quick positioning. At the same time, the contact surface is provided with a first insulating plate 406 to improve insulation protection.

[0031] Secondly, the bottom of both sets of positioning plates 5 are slidably connected to the first insulating plate 406 via the sliding groove 407. The two sets of positioning plates 5 are fixedly connected to the opposite side of each other with a second insulating plate 408. The positioning plates 5 slide stably via the sliding groove 407 to quickly position the solid-state battery 6 to be tested, and a second insulating plate 408 is provided at the contact surface to improve insulation protection.

[0032] Finally, an adjusting screw 701 is rotatably connected to the inner side of the adjusting frame 7, and a second motor 702 is fixedly installed at the bottom of the adjusting frame 7. The drive end of the second motor 702 is fixedly connected to the bottom end of the adjusting screw 701. The mounting frame 8 is connected to the adjusting screw 701 through a screw nut 703. The mounting frame 8 is slidably connected to the adjusting frame 7 through a lifting groove 801. A laser range sensor 802 is fixedly installed at the top of each opposite side of the two sets of mounting frames 8. The second motor 702 drives the adjusting screw 701 to rotate, so that the mounting frame 8 slides stably inside the lifting groove 801. This allows the height of the ultrasonic transmitting probe 9 and the ultrasonic receiving probe 10 to be adjusted. At the same time, during the scanning and detection process, the laser range sensor 802 monitors the distance to the solid-state battery 6 under test to adjust the emission energy, further improving the accuracy of the scanning and detection.

[0033] In this embodiment, the specific implementation scenario is as follows: After the power is turned on, the photoelectric sensor 304 detects the initial angle of the turntable 2 through the four sets of sensing slots 306 of the sensing disk 305 to confirm whether the rotation mechanism 3 is in the zero position (default 0° position). Then, the solid-state battery 6 to be tested is placed on the top of the placement platform 4 and fixed at its left and right ends by the positioning plate 5. The ultrasonic transmitting probe 9 and the ultrasonic receiving probe 10 are directly opposite each other. The ultrasonic transmitting probe 9 emits high-frequency pulses, and the ultrasonic receiving probe 10 synchronously collects transmission / reflection signals to perform depth scanning to detect internal defects (such as cracks and pores) of the solid-state battery 6 to be tested. The first motor 301 drives the rotating shaft 302 to rotate the turntable 2. Each 90° rotation corresponds to the four sets of sensing slots 306 of the sensing disk 305. The four sets of sensing slots 306 are distributed in a circumferential pattern with 90° intervals. The photoelectric sensor 304 triggers a signal to detect the four sets of sensing slots 306 of the solid-state battery 6. The system performs switching scans on four side detection surfaces (0°, 90°, 180°, 270°). Spatial domain correlation analysis is performed on the signals from the four sides. If a region exhibits strong reflection only at a single angle, it is identified as surface interference and discarded. For signal features shared by multiple angles, internal pores are identified and their three-dimensional coordinates are marked. For example, if a region exhibits strong reflection only at a single angle (e.g., the signal amplitude on the 90° surface is greater than 30% of the other three surfaces), and the proportion of short-term spike components is greater than 60%, it is identified as a scratch and discarded. If the low-frequency components in the signals from multiple angles are consistent (fluctuation < 10%), it is identified as a pore / crack, and its three-dimensional coordinates are recorded. Finally, a three-dimensional image of the internal defects of the solid-state battery 6 under test is generated based on the three-dimensional coordinates. The entire operation process is simple and convenient. This invention, through its design, can avoid the influence of surface defects, reduce the risk of false imaging, and thus greatly improve the accuracy of scanning and detection.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid state battery deep scanning device comprising a cabinet (1), characterized in that: A turntable (2) is rotatably connected to the top of the chassis (1). A rotation mechanism (3) is installed inside the chassis (1). A placement platform (4) is fixedly installed at the middle of the top of the turntable (2). Positioning plates (5) are slidably connected to the left and right ends of the top of the placement platform (4). A solid-state battery (6) to be tested is sandwiched between the two sets of positioning plates (5). Adjustment frames (7) are fixedly installed on the left and right sides of the chassis (1). Mounting frames (8) are slidably connected to the top of the two sets of adjustment frames (7). An ultrasonic transmitting probe (9) and an ultrasonic receiving probe (10) are respectively installed on the opposite side of the two sets of mounting frames (8). The indexing mechanism (3) includes a first motor (301) fixedly installed inside the chassis (1). A rotating shaft (302) is fixedly installed on the drive end of the first motor (301). The top end of the rotating shaft (302) is rotatably connected to the chassis (1). The top end of the rotating shaft (302) is fixedly connected to the turntable (2). A support frame (303) is fixedly installed inside the chassis (1) and outside the rotating shaft (302). A photoelectric sensor (304) is fixedly installed at the top end of the support frame (303). A sensing disk (305) is fixedly installed on the outside of the rotating shaft (302) at a position corresponding to the photoelectric sensor (304). Four sets of sensing slots (306) are opened inside the sensing disk (305).

2. The solid-state battery deep scanning device of claim 1, wherein: The induction disk (305) is fixedly connected to the rotating shaft (302) through the mounting sleeve (307), and the four sets of induction slots (306) are equally spaced inside the induction disk (305).

3. The solid-state battery deep scanning device of claim 1, wherein: The front of the chassis (1) is rotatably connected to an inspection door (101), and the bottom ends of the two sets of adjustment frames (7) are fixedly connected to the chassis (1) through connecting plates (102).

4. The solid state battery deep scan device of claim 1, wherein: A cylinder (401) is fixedly installed inside the placement platform (4). Synchronous slides (402) are slidably connected to both the left and right ends of the placement platform (4). The front ends of the two sets of synchronous slides (402) are fixedly connected to the positioning plate (5). One end of the cylinder (401) is fixedly connected to one of the sets of synchronous slides (402). A transmission plate (403) is rotatably connected to the middle of the interior of the placement platform (4). A transmission arm (404) is installed between the transmission plate (403) and the two sets of synchronous slides (402). The two ends of the two sets of transmission arms (404) are rotatably connected to the synchronous slides (402) and the transmission plate (403) respectively.

5. The solid state battery deep scan device of claim 1, wherein: The rear end of the placement platform (4) is fixedly connected to a positioning baffle (405), and the surfaces of the placement platform (4) and the positioning baffle (405) are both fixedly connected to a first insulating plate (406).

6. The solid state battery deep scan device of claim 5, wherein: The bottom of both sets of positioning plates (5) is slidably connected to the first insulating plate (406) through a sliding groove (407), and the opposite side of both sets of positioning plates (5) is fixedly connected to a second insulating plate (408).

7. The solid state battery deep scan device of claim 1, wherein: An adjusting screw (701) is rotatably connected to the inner side of the adjusting frame (7). A second motor (702) is fixedly installed at the bottom of the adjusting frame (7), and the driving end of the second motor (702) is fixedly connected to the bottom end of the adjusting screw (701). The mounting frame (8) is connected to the adjusting screw (701) through a screw nut (703). The mounting frame (8) is slidably connected to the adjusting frame (7) through a lifting groove (801). A laser rangefinder (802) is fixedly installed at the top of each of the two sets of mounting frames (8) on opposite sides.

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