Battery detection device and battery detection method

Abstract

The application provides a battery detection device and a battery detection method, and relates to the technical field of battery detection. The device comprises a test platform, a circuit assembly, a light path assembly, a fixing assembly, a ray assembly and a test equipment. The fixing assembly is fixedly arranged on the test platform and is used for fixing the detection position of a battery to be detected. The ray assembly is movably arranged on the test platform, emits rays meeting the irradiation area requirement of the fixing assembly, is connected with the test equipment, is used for emitting scanning rays to the rotating battery to be detected and acquiring corresponding digital signals. The circuit assembly is fixedly arranged on the fixing assembly and is used for slidably connecting the battery to be detected and the test equipment. The light path assembly is fixedly arranged on the fixing assembly and is used for slidably connecting the battery to be detected and the test equipment. The test equipment is further used for performing correlation data analysis based on the detection image, electrical data and optical data to obtain the detection result of the battery to be detected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery detection, in particular to a battery detection device and a battery detection method. BACKGROUND

[0002] X-ray imaging technology has important role in medical examination, industrial detection, security detection and other fields due to its high precision, fast imaging, non-destructive and other advantages. At present, X-ray tomography (CT, Computed Tomography) has been used to detect the internal structure and defects of batteries, such as: bubbles, metal particles, impurities, broken pole pieces and active material shedding, etc.

[0003] The CT imaging principle is to use X-ray to irradiate and penetrate the object, and to form a bright-dark contrast and tomographic image through computer processing according to the different absorption coefficients of different components. The in-situ or working condition battery CT characterization technology combines CT characterization technology with the actual operation process of the battery. In the actual working state or close to the actual working condition of the battery, CT imaging is performed to dynamically track the internal structure and defects of the battery in real time, and three-dimensional imaging is realized.

[0004] However, the current battery CT characterization technology is limited to internal imaging in an off-site environment. Due to the electrochemical relaxation phenomenon, it cannot reproduce the real reaction environment under working conditions, resulting in low effectiveness of battery detection, thereby adversely affecting the research and development, quality control, performance evaluation and other stages of the battery, and failing to meet the current battery detection needs. SUMMARY

[0005] Therefore, the purpose of the embodiments of the present application is to provide a battery detection device and a battery detection method to improve the low efficiency problem of battery detection in the prior art.

[0006] In order to solve the above problems, in a first aspect, the embodiments of the present application provide a battery detection device, which comprises: a test platform, a circuit assembly, a light path assembly, a fixing assembly, a ray assembly and a test equipment.

[0007] The fixing assembly is fixedly arranged on the test platform, and the fixing assembly is used to fix the detection position of the battery to be tested.

[0008] The ray assembly is movably arranged on the test platform, and the emitted rays meet the irradiation area requirement of the fixing assembly. The ray assembly is connected with the test equipment, and the ray assembly is used to emit scanning rays to the rotating battery to be tested and acquire corresponding digital signals. The test equipment is used to perform imaging processing based on the acquired digital signals to obtain the detection image of the battery to be tested.

[0009] The circuit assembly is fixedly arranged on the fixing assembly, and is used for slidably connecting the battery to be tested and the test equipment; and the test equipment is used for performing electrical detection on the battery to be tested based on the circuit assembly, so as to obtain electrical data of the battery to be tested.

[0010] The optical path assembly is fixedly arranged on the fixing assembly, and is used for slidably connecting the battery to be tested and the test equipment; and the test equipment is used for performing optical detection on the battery to be tested based on the optical path assembly, so as to obtain optical data of the battery to be tested.

[0011] The test equipment is further used for performing associated data analysis based on the detection image, the electrical data and the optical data, so as to obtain a detection result of the battery to be tested.

[0012] In the implementation process, the fixing assembly is arranged to fix the battery to be tested and drive the battery to be tested to rotate, so that the battery to be tested is detected in all directions and at multiple angles based on the radiation assembly, and multiple angle detection images are obtained. In order to ensure that the battery to be tested has stable power transmission, data communication and optical signal transmission functions during rotation, the circuit assembly and the optical path assembly can be arranged to slidably connect the battery to be tested and the external test equipment, so that normal and stable circuit transmission and optical path transmission can be maintained during rotation. The test equipment can be connected with multiple assemblies to control and process image detection, electrical detection and optical detection of the battery to be tested, so as to obtain detection images, electrical data and optical data with high effectiveness and correlation, and perform associated data analysis based on multiple data to obtain a detection result of the battery to be tested. The device structure provided in the application meets the continuous signal connection of the circuit and the optical path, is suitable for detecting batteries of multiple different structures and specifications, and meets multiple different battery detection requirements. In addition, the device can automatically collect and store data, and can realize lossless, stable, automatic and in-situ / working condition multi-scale and multi-resolution imaging during battery charging and discharging. The electrical data and the optical data are analyzed in combination, the damage deformation failure mechanism of the electrode material in the battery can be revealed in multiple levels and in depth, so that the effectiveness of the detection result is effectively improved, and subsequent battery research and development, quality control and performance evaluation can be performed.

[0013] Optionally, the fixing assembly comprises a positioning plate and a rotating member.

[0014] In a direction perpendicular to the test platform and away from the test platform, the bottom end of the rotating member is fixedly arranged on the test platform, and the top end of the rotating member is connected to and carries the positioning plate.

[0015] The positioning plate is used for fixing the battery to be tested, and the rotating member is used for driving the positioning plate and the battery to be tested on the positioning plate to rotate.

[0016] In the implementation process, the fixing assembly can include a positioning plate for fixing the battery to be tested and a rotating member for driving the positioning plate and the battery to be tested fixed thereon to rotate, so as to simulate the in-situ or working condition environment of the battery in a stable manner, that is, to simulate the actual working state or a state close to the actual working state of the battery, and to provide a full-range multi-angle rotating test detection position for the battery, so as to effectively improve the effectiveness of the detection image in combination with the full-range multi-angle data acquisition of the radiation assembly.

[0017] Optionally, the circuit assembly includes a conductive ring structure, a first connecting member, and a second connecting member.

[0018] The conductive ring structure is sleeved on the rotating member, and in the placement direction, the conductive ring structure is arranged at the bottom of the positioning plate.

[0019] The conductive ring structure is connected with the positive and negative electrodes of the battery to be tested through the first connecting member.

[0020] The conductive ring structure is connected with the test equipment through the second connecting member.

[0021] The conductive ring structure is used for connecting the battery to be tested and the test equipment based on the rotation of the rotating member.

[0022] In the implementation process, in order to realize the sliding connection with the battery to be tested, the circuit assembly can include a conductive ring structure and two corresponding connecting members. The conductive ring structure is sleeved on the rotating member and connected with the positive and negative electrodes of the battery to be tested through the first connecting member, so as to realize the sliding connection with the battery to be tested. The battery to be tested can still be stably connected with the conductive ring structure when rotating. In addition, the conductive ring structure can be connected with the test equipment through the second connecting member, so as to realize effective control and data transmission during electrical testing, and effectively ensure that the battery to be tested has stable power transmission and data communication function during the rotating test process.

[0023] Optionally, the conductive ring structure includes a ring-shaped wire group, a stator structure, and a brush structure.

[0024] The ring-shaped wire group is sleeved around the rotating member.

[0025] The stator structure is used for connecting the first connecting member and the brush structure, and the brush structure is used for slidingly connecting the ring-shaped wire group based on the rotation of the rotating member.

[0026] The ring-shaped wire group is connected with the second connecting member.

[0027] In the implementation process, in order to realize the effective sliding connection, the conductive ring structure can include a corresponding ring-shaped wire group, and a fixedly connected stator structure and a brush structure, so as to connect the first connecting piece and the brush structure through the stator structure, drive the first connecting piece and the connected brush structure to rotate correspondingly in the case of rotation of the battery to be tested, and realize the sliding connection between the brush structure and the ring-shaped wire group based on the rotation of the rotating piece. In addition, in order to realize the connection with the test equipment, the ring-shaped wire group can also be connected with the second connecting piece, thereby improving the effectiveness and stability of the control during electrical testing.

[0028] Optionally, the optical path assembly comprises: a fiber ring structure, a third connecting piece and a fourth connecting piece;

[0029] The fiber ring structure is sleeved on the rotating piece, and in the placement direction, the fiber ring structure is arranged on the top of the positioning plate;

[0030] The fiber ring structure is connected with the optical sensor of the battery to be tested through the third connecting piece;

[0031] The fiber ring structure is connected with the test equipment through the fourth connecting piece;

[0032] The fiber ring structure is used to connect the battery to be tested and the test equipment based on the rotation of the rotating piece.

[0033] In the implementation process, in order to realize the sliding connection with the battery to be tested, the optical path assembly can include a fiber ring structure and two corresponding connecting pieces. The fiber ring structure is sleeved on the rotating piece and connected with the optical sensor of the battery to be tested through the third connecting piece, so as to realize the sliding connection with the battery to be tested, so that the battery to be tested can still be stably connected with the fiber ring structure when rotating. In addition, the fiber ring structure can also be connected with the test equipment through the fourth connecting piece, so as to realize effective control and optical signal transmission during optical testing, and effectively ensure that the battery to be tested has stable optical signal transmission function during rotation testing.

[0034] Optionally, the fiber ring structure comprises: a ring-shaped prism, a fiber outlet and a fiber inlet;

[0035] The ring-shaped prism is sleeved around the rotating piece;

[0036] The fiber inlet is used to connect the fourth connecting piece and the ring-shaped prism;

[0037] The fiber outlet is used to slide the ring-shaped prism and the third connecting piece based on the rotation of the rotating piece.

[0038] In the implementation process, in order to realize effective sliding connection, the optical fiber ring structure can include a corresponding annular prism, and an optical fiber outlet and an optical fiber inlet for signal output and input, so as to connect the battery to be tested and the annular prism through the optical fiber outlet, drive the third connecting member and the connected optical fiber outlet to rotate correspondingly in the case of rotation of the battery to be tested, and realize sliding connection between the optical fiber outlet and the annular prism based on the rotation of the rotating member. In addition, in order to realize connection with the test equipment, the annular prism can also be connected with the fourth connecting member, thereby improving the effectiveness and stability of control during optical testing.

[0039] Optionally, the test equipment comprises an electrical demodulation device, an optical demodulation device and a processing device.

[0040] The electrical demodulation device is connected with the circuit component and the processing device, and is used for electrical detection of the battery to be tested based on control of the processing device, so as to obtain the electrical data; wherein the electrical data comprises battery charge and discharge data and battery electrochemical data.

[0041] The optical demodulation device is connected with the optical path component and the processing device, and is used for optical detection of the battery to be tested based on control of the processing device, so as to obtain the optical data; wherein the optical data comprises optical sensing data and spectral data.

[0042] In the implementation process, the test equipment can include an electrical demodulation device for electrical detection control, an optical demodulation device for optical detection control, and a processing device for controlling the two demodulation devices and the ray component and performing correlation data analysis on multiple data, so as to realize corresponding image detection, electrical detection and optical detection.

[0043] Optionally, the ray component comprises a ray source and a detector.

[0044] The ray source and the detector are movably arranged on the test platform.

[0045] The ray source is arranged at the first end of the fixed component, and the detector is arranged at the second end of the fixed component along the extension line of the connecting line from the ray source to the fixed component.

[0046] The ray source is used for emitting multiple scanning rays to the rotating battery to be tested.

[0047] The detector is used for receiving multiple ray signals passing through the battery to be tested and converting them into the digital signals.

[0048] In the implementation process, the ray assembly can be provided with a ray source for emitting rays and a detector for receiving signals. In order to effectively improve the detection effect during image detection, the ray source and the detector are respectively movably arranged on two opposite ends of the fixed assembly, so as to realize adjustable image detection and be suitable for image detection of various types of to-be-detected batteries.

[0049] In a second aspect, the embodiments of the present application also provide a battery detection method, which is applied to the battery detection device described in any one of the above, and the method comprises:

[0050] Slidingly connecting the to-be-detected battery fixed on the fixed assembly with the circuit assembly and the optical path assembly;

[0051] Obtaining a detection image of the to-be-detected battery in rotation through the ray assembly and the test equipment;

[0052] Obtaining electrical data of the to-be-detected battery through the circuit assembly and the test equipment;

[0053] Obtaining optical data of the to-be-detected battery through the optical path assembly and the test equipment;

[0054] Performing correlation data analysis based on the obtained detection image, electrical data and optical data by the test equipment, and obtaining a detection result of the to-be-detected battery.

[0055] In the implementation process, during the test, the to-be-detected battery is first fixed on the fixed assembly, and the to-be-detected battery is slidingly connected based on the circuit assembly and the optical path assembly, so as to ensure that the to-be-detected battery has stable power transmission, data communication and optical signal transmission functions during the test. Moreover, during the test, image detection, electrical detection and optical detection can be simultaneously performed based on the set ray assembly, circuit assembly and optical path assembly, which effectively improves the efficiency during the test and makes the obtained detection image, electrical data and optical data have correlation in the time dimension. The test equipment performs correlation data analysis based on the obtained various types of data, obtains a detection result of the to-be-detected battery, and can multi-level and deeply reveal the damage deformation failure mechanism of the electrode material in the battery, thereby effectively improving the effectiveness of the detection result, so as to facilitate subsequent battery research and development, quality control, performance evaluation and the like.

[0056] Optionally, the method further comprises:

[0057] Performing imaging quality detection on the detection image based on a preset imaging quality condition by the test equipment;

[0058] If it is determined that the detection image does not satisfy the imaging quality condition, the working parameter of the ray assembly is adjusted based on the focusing condition of the ray assembly, and an adjusted image collected by the ray assembly after adjustment is obtained until the adjusted image satisfies the imaging quality condition.

[0059] In the above implementation process, in order to further improve the image quality of the detection image and improve the effectiveness of the detection result, when the image is detected, the imaging quality of the detection image can be detected according to the preset imaging quality condition. If the detection image does not satisfy the imaging quality condition, the working parameter of the ray assembly is adjusted according to the focusing condition of the ray assembly, and an adjusted image collected after adjustment is obtained, and the imaging quality detection is continued until the current image satisfies the imaging quality condition, and then the adjustment is stopped. The image data satisfying the imaging quality condition is associated with the data analysis, and the position parameter corresponding to the image satisfying the imaging quality condition can also be used as the position adjustment condition for detecting the same type of battery to be detected subsequently.

[0060] In summary, the embodiments of the present application provide a battery detection device and a battery detection method. The structure of the sliding connection satisfies the continuous signal connection of the circuit and the optical path, is suitable for detecting batteries of various different structures and specifications, and meets various different battery detection requirements. Moreover, the data collection and storage can be automatically performed, and during the charging and discharging process of the battery, lossless, stable, automatic, and in-situ / working condition multi-scale and multi-resolution imaging can be realized. The analysis of the electrical data and the optical data with correlation can reveal the damage deformation failure mechanism of the electrode material in the battery at multiple levels and in depth, thereby effectively improving the effectiveness of the detection result, so as to facilitate the subsequent battery research and development, quality control, performance evaluation, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0062] Figure 1 A structural schematic diagram of a battery detection device provided by an embodiment of the present application;

[0063] Figure 2 A structural schematic diagram of another battery detection device provided by an embodiment of the present application;

[0064] Figure 3 A partial structural schematic diagram of a battery detection device provided by an embodiment of the present application;

[0065] Figure 4 A cross-sectional structure schematic diagram of a conductive ring structure provided by an embodiment of the present application;

[0066] Figure 5 A cross-sectional structure schematic diagram of a fiber ring structure provided by an embodiment of the present application;

[0067] Figure 6 A flowchart of a battery detection method provided by an embodiment of the present application;

[0068] Figure 7 A flowchart of another battery detection method provided by an embodiment of the present application.

[0069] Icon: 100-test platform; 200-circuit component; 300-optical path component; 400-fixing component; 500-ray component; 600-test equipment; A-battery to be tested; 410-positioning plate; 421-rotating shaft; 422-carrier table; 431-clamp; 210-conductive ring structure; 220-first connecting piece; 221-positive electrode wire; 222-negative electrode wire; 223-reference electrode wire; 224-gas sensing wire; 225-positive electrode temperature control wire; 226-negative electrode temperature control wire; 230-second connecting piece; 211-ring-shaped wire group; 212-stator structure; 213-brush structure; 310-fiber ring structure; 320-third connecting piece; 321-temperature sensing fiber; 322-refractive index and spectrum sensing fiber; 323-pressure and stress sensing fiber; 330-fourth connecting piece; 311-ring-shaped prism; 312-fiber outlet; 313-fiber inlet; 610-electricity demodulation equipment; 620-optical demodulation equipment; 630-processing equipment; 510-ray source; 520-detector; B-placing direction. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0071] In-situ or working battery CT characterization technology is to combine CT characterization technology with the actual operation process of the battery. When the battery is working, CT imaging is performed to dynamically track the internal structure and defects of the battery in real time, and three-dimensional imaging with high time resolution and high time resolution is realized. To obtain a high-resolution three-dimensional image, the CT test mode requires scanning by rotating the sample (generally 360°) to obtain two-dimensional projection images at multiple angles. To realize in-situ or working battery CT testing automation, the battery and working condition equipment need to meet the following requirements: 1. compatible mechanical combination during rotation testing; 2. long-term stable operation capability of the system, the spatial drift of the battery during testing should be less than the set spatial resolution; 3. spatial alignment capability between batch three-dimensional data, which is used to finely observe the changes of the internal structure of the particle scale battery with charging and discharging. However, the current battery CT characterization technology is limited to internal imaging in an off-site environment. Due to the electrochemical relaxation phenomenon, it cannot reproduce the real reaction environment under working conditions, resulting in low effectiveness of battery detection, which adversely affects the research and development, quality control, performance evaluation and other stages of the battery, and cannot meet the current battery detection needs.

[0072] To solve the above problems, the battery detection device provided by the embodiments of the present application is provided, please refer to Figure 1 , Figure 1 The structural diagram of the battery detection device provided by the embodiments of the present application is shown in the figure. The device can include a test platform 100, a circuit assembly 200, a light path assembly 300, a fixing assembly 400, a radiation assembly 500 and a test equipment 600.

[0073] The fixing assembly 400 is fixedly arranged on the test platform 100, and the fixing assembly 400 is used to fix the detection position of the battery to be tested.

[0074] Optionally, the test platform 100 can be a horizontal table structure, so that multiple assemblies can be stably fixed thereon for work. The fixing assembly 400 can be a structure with fixing and rotating functions, such as a rotating platform, etc. The battery to be tested can be fixed at the corresponding position of the fixing assembly 400 by means of glue, fixing grooves, buckles, etc.

[0075] For example, the battery to be tested A can include self-made batteries, commercial / scientifically designed button batteries, soft package batteries, cylindrical batteries or square shell batteries and other various types of batteries.

[0076] Optionally, the ray assembly 500 is movably arranged on the test platform 100, and emits light rays to meet the illumination area requirement of the fixed assembly 400. The ray assembly 500 is connected with the test device 600, and the ray assembly 500 is used to emit scanning rays to the rotating battery to be tested and acquire corresponding digital signals. The test device 600 is used to perform imaging processing based on the acquired digital signals to obtain a detection image of the battery to be tested.

[0077] It should be noted that the illumination area requirement can be determined based on the position of the fixed assembly 400 and the focusing condition of the ray assembly 500. In addition, considering the detection requirement of detecting a plurality of different types of batteries to be tested, the ray assembly 500 can be moved to effectively detect each type of battery to be tested, improve the effectiveness of the digital signals, and thus improve the effectiveness of the detection image.

[0078] For example, the ray assembly 500 can include a plurality of types of devices capable of CT imaging by using X-ray illumination and penetrating objects.

[0079] Optionally, the circuit assembly 200 is fixedly arranged on the fixed assembly 400, and the circuit assembly 200 is used to slidably connect the battery to be tested and the test device 600. The test device 600 is used to perform electrical detection on the battery to be tested based on the circuit assembly 200 to obtain electrical data of the battery to be tested.

[0080] Optionally, the optical path assembly 300 is fixedly arranged on the fixed assembly 400, and the optical path assembly 300 is used to slidably connect the battery to be tested and the test device 600. The test device 600 is used to perform optical detection on the battery to be tested based on the optical path assembly 300 to obtain optical data of the battery to be tested.

[0081] In order to ensure that the battery to be tested has stable power transmission, data communication and optical signal transmission functions during the rotating test process, the corresponding circuit assembly 200 and optical path assembly 300 can be arranged to slidably connect the battery to be tested and the external test device 600, so that normal and stable circuit transmission and optical path transmission can be maintained during the rotating test process.

[0082] For example, the circuit assembly 200 can be arranged as a plurality of types of structures capable of circuit transmission, and the optical path assembly 300 can be arranged as a plurality of types of structures capable of optical path transmission.

[0083] Optionally, the testing device 600 can be connected to multiple components to control and process the image detection, electrical detection, and optical detection of the battery under test, obtaining detection images, electrical data, and optical data that are highly effective and correlated in the time dimension. Furthermore, considering the correlation between the detection images, electrical data, and optical data in the time dimension, the testing device 600 can perform correlation data analysis based on the detection images, electrical data, and optical data to obtain the detection results of the battery under test.

[0084] Optionally, electrical testing may include electrochemical charge-discharge testing, where the testing equipment 600 controls battery charge-discharge and data transmission. The battery charge-discharge program is determined based on battery information such as positive and negative electrode materials and their theoretical specific capacity, the mass of active materials, electrolyte materials, and charge-discharge voltage windows. Generally, the first two cycles are for low-current activation, and subsequent cycles are for high-current long-cycle testing. Electrical testing may also include temperature testing, achieved by connecting to a thermocouple of the battery under test to control temperature measurement according to the requirements of the charge-discharge process. Optical testing may include the detection of internal battery temperature, pressure, stress, refractive index, and spectrum, enabling simultaneous measurement of in-situ / operating-condition testing based on image detection. Image detection may include CT image acquisition, collection, and processing; CT image data can be correlated with the real-time battery charge-discharge process to obtain X-ray images of the internal battery structure under in-situ / operating-condition conditions, which can then be used as the detection image. During the complete charge and discharge process of a battery, continuous CT images can be combined into a video to obtain high temporal resolution 4DX X-ray imaging of the corresponding cycle process. This enables dynamic tracking of the battery's internal structure and defect evolution, which can be used to guide the optimization of electrode structure and interface microstructure, and even the design of battery structure.

[0085] exist Figure 1 In the illustrated embodiments, the device structure design provided by this application satisfies the continuous signal connection of the circuit and optical path, making it suitable for testing batteries with various structural specifications and meeting diverse battery testing needs. Furthermore, it can automatically acquire and store data. During battery charging and discharging, it can achieve non-destructive, stable, automated, in-situ / operating-condition multi-scale, multi-resolution imaging. Combined with correlated electrical and optical data analysis, it can reveal the damage, deformation, and failure mechanisms of electrode materials in the battery at multiple levels and in depth, thereby effectively improving the validity of the test results and facilitating subsequent battery research and development, quality control, performance evaluation, and other processing.

[0086] Optionally, please refer to Figure 2 , Figure 2 This is a schematic diagram of another battery detection device provided in an embodiment of this application, wherein the fixing component 400 may include: a positioning plate 410 and a rotating component.

[0087] Wherein, in the placement direction B perpendicular to the test platform 100 and away from the test platform 100, the bottom end of the rotating member is fixedly arranged on the test platform 100, and the top end of the rotating member is connected to and carries the positioning plate 410, which is used to fix the battery to be tested. The rotating member is used to drive the positioning plate 410 and the battery to be tested thereon to rotate.

[0088] Optionally, the fixing assembly 400 can include the positioning plate 410 for fixing the battery to be tested and the rotating member for driving the positioning plate 410 and the battery to be tested fixed thereon to rotate, so as to simulate the in-situ or working condition environment of the battery in a stable manner, that is, to simulate the actual working state or the state close to the actual working state of the battery, and to provide a full range of multi-angle rotating test detection position for the battery, so as to effectively improve the effectiveness of the detection image in combination with the ray assembly 500 for full range of multi-angle data acquisition.

[0089] For example, in order to realize the rotating function and the carrying function of the rotating member, the rotating member can include a corresponding rotating shaft 421 and a carrying platform 422. The carrying platform 422 is fixedly arranged on the test platform 100, and the rotating shaft 421 is arranged in the middle of the carrying platform 422 to realize 360-degree or other angle rotation freedom.

[0090] For example, in order to not affect the image detection of the battery, the positioning plate 410 can be made of carbon fiber, polymer or other materials that will not affect the penetration of the scanning ray.

[0091] Optionally, in order to realize the sliding connection with the battery to be tested, the circuit assembly 200 can include a conductive ring structure 210, a first connecting member 220 and a second connecting member 230. The conductive ring structure 210 is sleeved on the rotating member, and in the placement direction B, the conductive ring structure 210 is arranged at the bottom of the positioning plate 410. The conductive ring structure 210 is connected to the positive and negative electrodes of the battery to be tested through the first connecting member 220, and the conductive ring structure 210 is connected to the test equipment 600 through the second connecting member 230. The conductive ring structure 210 is used to connect the battery to be tested and the test equipment 600 based on the rotating condition of the rotating member. By arranging the conductive ring structure 210 and the corresponding two connecting members, the conductive ring structure 210 is sleeved on the rotating member and connected to the positive and negative electrodes of the battery to be tested through the first connecting member 220, so as to be slidably connected with the battery to be tested. When the battery to be tested rotates, it can still be stably connected with the conductive ring structure 210. In addition, the conductive ring structure 210 can also be connected to the test equipment 600 through the second connecting member 230, so as to realize effective control and data transmission during the electrical test, thereby effectively ensuring that the battery to be tested has stable power transmission and data communication function during the rotating test.

[0092] Optionally, please refer to Figure 3 , Figure 3A partial structure schematic diagram of a battery detection device provided by the embodiment of the application, wherein the battery to be detected A can be fixed on the positioning plate 410 through the clamp 431, the clamp 431 can be provided as a plurality of structures with fixing functions, such as buckles, clamp structures, etc. The first connecting piece 220 and the second connecting piece 230 can be provided as wires with electrical signal transmission functions, the first connecting piece 220 can include a plurality of types of wires such as positive wire 221, negative wire 222, reference electrode wire 223, gas sensing wire 224, positive temperature control wire 225, negative temperature control wire 226, etc., the third connecting piece 320 and the fourth connecting piece 330 can be provided as optical fibers with optical signal transmission functions, the third connecting piece 320 can include a plurality of types of optical fibers such as temperature sensing optical fiber 321, refractive index and spectrum sensing optical fiber 322, pressure and stress sensing optical fiber 323, etc., to realize a plurality of different types of electrical detection and optical detection.

[0093] Optionally, please refer to Figure 4 , Figure 4 A cross-sectional structure schematic diagram of a conductive ring structure provided by the embodiment of the application, wherein the conductive ring structure 210 can include: a ring-shaped wire group 211, a stator structure 212 and a brush structure 213. The ring-shaped wire group 211 is sleeved around the rotating member, for example, the ring-shaped wire group 211 can be sleeved on the rotating shaft 421 of the rotating member, the stator structure 212 is used to connect the first connecting piece 220 and the brush structure 213, the brush structure 213 is used to slide connect the ring-shaped wire group 211 based on the rotation condition of the rotating member, and the ring-shaped wire group 211 is connected with the second connecting piece 230. In order to realize effective sliding connection, the conductive ring structure 210 can include the corresponding ring-shaped wire group 211, and the fixedly connected stator structure 212 and brush structure 213, so as to connect the first connecting piece 220 and the brush structure 213 through the stator structure 212, so as to drive the first connecting piece 220 and the connected brush structure 213 to rotate correspondingly under the condition that the battery to be detected rotates, thereby realizing sliding connection between the brush structure 213 and the ring-shaped wire group 211 based on the rotation condition of the rotating member. Moreover, in order to realize connection with the test equipment 600, the ring-shaped wire group 211 can also be connected with the second connecting piece 230, thereby improving the effectiveness and stability of control during electrical test.

[0094] For example, the stator structure 212 can generate a rotating magnetic field through the current in its winding, and this rotating magnetic field interacts with the conductor in the rotor, thereby generating an induced current in the rotor. The brush structure 213 can be a plurality of types of brushes, such as carbon brushes made of graphite, etc., and the brush structure 213 can conduct current between rotating parts and stationary parts.

[0095] Please continue to refer to Figure 2Optionally, in order to realize the sliding connection with the battery to be tested, the optical path assembly 300 can comprise: a fiber loop structure 310, a third connecting piece 320 and a fourth connecting piece 330. The fiber loop structure 310 is sleeved on the rotating piece, and in the placement direction B, the fiber loop structure 310 is arranged on the top of the positioning plate 410, the fiber loop structure 310 is connected with the optical sensor of the battery to be tested through the third connecting piece 320, the fiber loop structure 310 is connected with the test equipment 600 through the fourth connecting piece 330, and the fiber loop structure 310 is used to connect the battery to be tested with the test equipment 600 based on the rotation of the rotating piece. By arranging the fiber loop structure 310 and the corresponding two connecting pieces, the fiber loop structure 310 is sleeved on the rotating piece and connected with the optical sensor of the battery to be tested through the third connecting piece 320 to realize the sliding connection with the battery to be tested, so that the battery to be tested can be stably connected with the fiber loop structure 310 during rotation, and the fiber loop structure 310 can also be connected with the test equipment 600 through the fourth connecting piece 330 to realize effective control and optical signal transmission during optical testing, thereby effectively ensuring the stable optical signal transmission function of the battery to be tested during the rotating test process.

[0096] Optionally, referring to Figure 5 , Figure 5 A cross-sectional structure schematic diagram of a fiber loop structure provided by the embodiment of the application, wherein the fiber loop structure 310 can comprise: a ring-shaped prism 311, a fiber outlet 312 and a fiber inlet 313, the ring-shaped prism 311 is sleeved around the rotating piece, for example, the ring-shaped prism 311 can be sleeved on the rotating shaft 421 of the rotating piece, the fiber inlet 313 is used to connect the fourth connecting piece 330 with the ring-shaped prism 311, and the fiber outlet 312 is used to slide connect the ring-shaped prism 311 and the third connecting piece 320 based on the rotation of the rotating piece. In order to realize effective sliding connection, the fiber loop structure 310 can comprise the corresponding ring-shaped prism 311, and the fiber outlet 312 and the fiber inlet 313 for signal output and input, so as to connect the battery to be tested with the ring-shaped prism 311 through the fiber outlet 312, drive the third connecting piece 320 and the connected fiber outlet 312 to rotate correspondingly in the case of rotation of the battery to be tested, and thereby realize the sliding connection between the fiber outlet 312 and the ring-shaped prism 311 based on the rotation of the rotating piece. And in order to realize the connection with the test equipment 600, the ring-shaped prism 311 can also be connected with the fourth connecting piece 330, thereby improving the effectiveness and stability of the control during optical testing.

[0097] For example, the ring-shaped prism 311 can be provided in multiple types of prisms, such as a Dove prism, etc., and the ring-shaped prism 311 can be fixedly arranged on the top of the positioning plate 410 through a fixing frame or the like structure, and multiple fiber outlets 312 and multiple fiber inlets 313 can be arranged to adapt to multiple different rotating speeds of the rotating piece.

[0098] Optionally, the conductive ring structure 210 and the optical fiber ring structure 310 can be arranged as corresponding slip ring structures to achieve the effect of slip connection.

[0099] Please continue to refer to Figure 2 Optionally, the test device 600 can include an electrical demodulation device 610, an optical demodulation device 620, and a processing device 630. The electrical demodulation device 610 is connected to the circuit assembly 200 and the processing device 630, and is used to perform electrical detection on the battery under test based on the control of the processing device 630 to obtain electrical data; wherein the electrical data can include battery charge and discharge data, battery electrochemical data, and other data related to the electrical characteristics of the battery under test. The optical demodulation device 620 is connected to the optical path assembly 300 and the processing device 630, and is used to perform optical detection on the battery under test based on the control of the processing device 630 to obtain optical data; wherein the optical data includes optical sensing data and spectral data, and other data related to the optical characteristics of the battery under test.

[0100] For example, the optical demodulation device 620 can integrate the functions of a fiber demodulator, an infrared spectrometer, a Raman spectrometer, and other devices.

[0101] Optionally, the test device 600 can include an electrical demodulation device 610 for electrical detection control, and an optical demodulation device 620 for optical detection control, as well as a processing device 630 for controlling the two demodulation devices and the ray assembly 500 and performing correlation data analysis on the various data. The electrical demodulation device 610 and the optical demodulation device 620 can also be part of or a module of the test device 600, and can be integrated in the test device 600 to have multiple functions.

[0102] For example, the test device 600 can be a server, a cloud platform, a personal computer (PC), a tablet computer, a smart phone, a personal digital assistant (PDA), or other electronic devices with logical computing functions, to achieve corresponding control and data processing functions.

[0103] Please continue to refer to Figure 2Optionally, the ray assembly 500 can include a ray source 510 and a detector 520. The ray source 510 and the detector 520 are movably arranged on the test platform 100. The ray source 510 is arranged at a first end of the fixed assembly 400, and the detector 520 is arranged at a second end of the fixed assembly 400 along an extension line of a connecting line of the ray source 510 to the fixed assembly 400. The ray source 510 is configured to emit multiple scanning rays to the rotating battery under test, and the detector 520 is configured to receive multiple ray signals passing through the battery under test and convert the multiple ray signals into digital signals. The ray assembly 500 can be provided with the ray source 510 for emitting rays and the detector 520 for receiving signals. In order to effectively improve the detection effect during image detection, the ray source 510 and the detector 520 are movably arranged at two opposite ends of the fixed assembly 400, respectively, so as to ensure that the scanning rays can penetrate the battery under test and be normally received by the detector 520, and adjustable image detection can be realized, which is suitable for image detection of various types of batteries under test.

[0104] Optionally, the scanning rays emitted by the ray source 510 can be rays such as X-rays having a penetrating scanning function. The ray source 510 can include an X-ray tube, which can include a cathode (heating body) and an anode (target material), and a glass shell with high vacuum between the cathode and the anode.

[0105] Optionally, the detector 520 can include a corresponding digital-to-analog converter and an analog-to-digital converter, so as to perform photoelectric conversion processing on the scanning rays to obtain corresponding digital signals. In addition, the ray source 510 and the detector 520 are connected to the test device 600, so as to control the working state of the ray source 510 through the test device 600 and process the digital signals sent by the detector 520.

[0106] For example, the X-rays passing through the battery under test A are received by the detector 520, converted into visible light, converted into electrical signals by a photoelectric converter, and converted into digital signals by an analog / digital converter, and then input into a processing device for processing. The processing of image formation is as follows: a selected layer is divided into a plurality of cuboids with the same volume, which are called voxels. The X-ray attenuation coefficient or absorption coefficient of each voxel is obtained by calculating the obtained information, and then arranged into a matrix, i.e., a digital matrix. The digital matrix can be stored in a magnetic disk or an optical disk. Each number in the digital matrix is converted into a small block with different gray scales from black to white, i.e., a pixel, by a digital / analog converter, and arranged in a matrix to form a CT image during image detection.

[0107] Optionally, taking the actual test process as an example, the positive and negative electrodes of the battery to be tested, the temperature control thermocouple, and the electrical sensor can be connected to the conductive ring structure 210 through the first connecting piece 220, and the conductive ring structure 210 is connected to the electrical demodulation device 610 through the second connecting piece 230, so as to realize the functions of electrical detection such as power control, charge and discharge, impedance, capacitance measurement, data transmission, temperature control, etc. The optical fiber sensor of the battery to be tested is connected to the optical fiber ring structure 310 through the third connecting piece 320, and the optical fiber ring structure 310 is connected to the optical demodulation device 620 through the fourth connecting piece 330, so as to realize the functions of optical detection such as pressure, temperature, stress, refractive index sensing and spectrum measurement. By adjusting the position of the ray assembly 500 or adjusting the position of the fixed assembly 400, the battery to be tested is guided to the focusing position of the ray source 510, and the current, temperature and multi-angle X-ray radiation can be applied to the battery to be tested at the same time for detection. Further, the X-ray transmitted through the battery to be tested is received by the detector 520, converted into an electrical signal by a photoelectric converter, and then converted into a digital signal by an analog / digital converter and sent to the test device 600 for imaging processing to obtain a 3D detection image. At the same time, the electrical demodulation device 610 records the current, voltage, capacitance, capacity, energy and other parameters of the battery to be tested as corresponding electrical data, and the optical demodulation device 620 records the internal temperature, pressure, stress, refractive index and spectrum information of the battery to be tested as corresponding optical data. By correlating the continuous detection image with the electrochemical curve corresponding to the charge and discharge time, the electrical and optical sensing curves, the high-time-resolution 4D X-ray imaging of the internal structure of the battery to be tested under in-situ or working conditions can be obtained as the corresponding detection result, and the function of dynamically tracking the internal structure and defect of the battery is realized.

[0108] Optionally, the distance and spatial orientation between the ray source 510, the detector 520 and the fixed assembly 400 can be controlled by the test device 600, so that the cone-shaped three-dimensional X-ray beam emitted by the ray source 510 passes through the test position where the battery to be tested is located, and the signal is received by the detector 520.

[0109] Optionally, when the battery to be tested is tested by rotation, the rotation angle of the rotating member can be set to 360° to ensure multi-angle data acquisition. High-resolution detection images can be collected before the battery is tested by charge and discharge, and the working parameters can be adjusted according to the imaging quality of the detection image until a good quality image is obtained, which is used as the CT image of the initial state of the battery, and this parameter can be used as the working parameter for subsequent continuous automatic CT sample collection of the same type of battery to be tested.

[0110] Please refer to Figure 6 , Figure 6A flowchart of a battery detection method provided by an embodiment of the present application is shown in the figure. The method can include the battery detection device of any of the embodiments described above. The method can include steps S710-S750.

[0111] In step S710, the battery to be tested is slidably connected to the circuit assembly and the optical path assembly while being fixed to the fixing assembly.

[0112] In the test, the battery to be tested is first fixed to the fixing assembly, and then slidably connected to the circuit assembly and the optical path assembly, so that the battery to be tested can have stable power transmission, data communication and optical signal transmission functions during the rotation test.

[0113] For example, a soft package battery can be fixed in a corresponding area on the positioning plate. For example, the soft package battery and the positioning plate can be bonded using glue as an adhesive, or the positioning plate with a mechanical mold can be used to fix the soft package battery by applying a certain pressure to the soft package battery, or the volume of the soft package battery can be limited to simulate the real working condition of the battery.

[0114] Optionally, the battery to be tested can be connected to the conductive ring structure, the optical fiber ring structure, the optical demodulation device and the electrical demodulation device. The positive and negative electrodes, the reference electrode and the temperature controller of the battery to be tested are slidably connected by the conductive ring structure, and the optical sensor of the battery to be tested is slidably connected by the optical fiber ring structure. The circuit is fixed to the rotating shaft of the rotating member to ensure the stability of the circuit and the optical path connection during the rotation test.

[0115] In step S720, the detection image of the rotating battery to be tested is obtained by the ray assembly and the test device.

[0116] The CT scanning mode, the light pipe focal point position, the current voltage, the precision, the scanning time and other working parameters of the ray assembly can be set by the test device.

[0117] In step S730, the electrical data of the battery to be tested is obtained by the circuit assembly and the test device.

[0118] In step S740, the optical data of the battery to be tested is obtained by the optical path assembly and the test device.

[0119] In the test, steps S720-S740 can be performed simultaneously. The image detection, electrical detection and optical detection can be performed simultaneously based on the set ray assembly, circuit assembly and optical path assembly, which effectively improves the efficiency of the test and makes the obtained detection image, electrical data and optical data have correlation in the time dimension.

[0120] In step S750, the test device performs correlation data analysis based on the obtained detection image, electrical data and optical data to obtain the detection result of the battery to be tested.

[0121] The plurality of components can send the collected data to the test device for processing, and the test device can perform correlation data analysis based on the acquired data of various types to obtain the detection result of the battery under test.

[0122] In the embodiment shown in the figure, the efficiency and effectiveness of detecting the battery are effectively improved, and the method is suitable for detecting various types of batteries and meets various battery detection requirements. Figure 6 The efficiency and effectiveness of detecting the battery are effectively improved, and the method is suitable for detecting various types of batteries and meets various battery detection requirements.

[0123] Optionally, refer to Figure 7 , Figure 7 The flowchart of another battery detection method provided by the embodiment of the application, which can further include steps S751-S752.

[0124] In step S751, the test device performs imaging quality detection on the detection image based on the preset imaging quality condition.

[0125] In order to further improve the image quality of the detection image and improve the effectiveness of the detection result, the imaging quality of the detection image can be detected according to the preset imaging quality condition when the image is detected.

[0126] Optionally, the imaging quality condition can be an imaging quality precision condition set according to historical conditions and requirements, for example, a resolution threshold value, etc. If the resolution is lower than the threshold value, it is determined that the detection image does not meet the imaging quality condition, and if the resolution is higher than or equal to the threshold value, it is determined that the detection image meets the imaging quality condition. If it is determined that the detection image meets the imaging quality condition, it is determined that the imaging quality of the detection image is high and can be directly used.

[0127] In step S752, if it is determined that the detection image does not meet the imaging quality condition, the working parameters of the ray component are adjusted based on the focusing condition of the ray component, and the adjusted image collected by the adjusted ray component is obtained until the adjusted image meets the imaging quality condition.

[0128] In the case where the detection image does not meet the imaging quality condition, the CT scanning mode, light tube focal point position, current voltage, precision, scanning time and other working parameters of the ray component are adjusted according to the focusing condition of the ray component, and the adjusted image collected after adjustment is obtained, and the imaging quality detection is continued until the current image meets the imaging quality condition, and the adjustment is stopped. The image data meeting the imaging quality condition is used for correlation data analysis, and the position parameters corresponding to the image meeting the imaging quality condition can also be used as the position adjustment condition for detecting the same type of battery under test in the future.

[0129] Optionally, the position of the ray assembly or the fixed assembly can also be adjusted according to the focusing condition of the ray assembly, so as to improve the imaging quality of the image.

[0130] Since the principle of solving the problem of the battery detection method in the embodiment of the application is similar to the foregoing embodiment of the battery detection device, implementation of the battery detection method in the embodiment of the application can be referred to the description in the foregoing embodiment of the battery detection device, and repeated parts will not be described herein.

[0131] In several embodiments provided in the present application, it should be understood that the disclosed device can also be implemented by other manners. The foregoing device embodiments are only schematic, for example, the block diagram in the drawings shows the possible implementation architecture, function and operation of the device according to the embodiments of the present application. In this regard, each block in the block diagram can represent a module, a program segment or a part of code, which contains one or more executable instructions for implementing the specified logical function. It should also be noted that, in some alternative implementation manners, the functions noted in the blocks can also occur in different order from that noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can also be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagram, and the combination of the block diagram, can be implemented by a dedicated hardware-based system for executing the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0132] In addition, each functional module in the embodiments of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0133] If the functions are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0134] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0135] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0136] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus.

Claims

1. A battery detection device, characterized by, The device comprises a test platform, a circuit assembly, an optical path assembly, a fixing assembly, a ray assembly and a test equipment; The fixing assembly is fixedly arranged on the test platform, and is used for fixing the detection position of the battery to be tested; The ray assembly is movably arranged on the test platform, emits rays meeting the illumination area requirement of the fixing assembly, is connected with the test equipment, and is used for emitting scanning rays to the rotating battery to be tested and acquiring corresponding digital signals; the test equipment is used for imaging processing based on the acquired digital signals to obtain a detection image of the battery to be tested; The circuit assembly is fixedly arranged on the fixing assembly, is used for slidably connecting the battery to be tested and the test equipment; the test equipment is used for electrical detection of the battery to be tested based on the circuit assembly to obtain electrical data of the battery to be tested; The optical path assembly is fixedly arranged on the fixing assembly, is used for slidably connecting the battery to be tested and the test equipment; the test equipment is used for optical detection of the battery to be tested based on the optical path assembly to obtain optical data of the battery to be tested; The test equipment is further used for correlation data analysis based on the detection image, the electrical data and the optical data to obtain a detection result of the battery to be tested; The fixing assembly comprises a positioning plate and a rotating part; in a placement direction perpendicular to the test platform and away from the test platform, the bottom end of the rotating part is fixedly arranged on the test platform, and the top end of the rotating part is connected with and carries the positioning plate; the positioning plate is used for fixing the battery to be tested, and the rotating part is used for driving the positioning plate and the battery to be tested thereon to rotate; The circuit assembly comprises a conductive ring structure, a first connecting piece and a second connecting piece; the conductive ring structure is sleeved on the rotating part, and in the placement direction, the conductive ring structure is arranged at the bottom of the positioning plate; the conductive ring structure is connected with the positive and negative electrodes of the battery to be tested through the first connecting piece; the conductive ring structure is connected with the test equipment through the second connecting piece; the conductive ring structure is used for connecting the battery to be tested and the test equipment based on the rotation condition of the rotating part; The conductive ring structure comprises a ring-shaped wire group, a stator structure and a brush structure; the ring-shaped wire group is sleeved around the rotating part; the stator structure is used for connecting the first connecting piece and the brush structure, and the brush structure is used for slidably connecting the ring-shaped wire group based on the rotation condition of the rotating part; the ring-shaped wire group is connected with the second connecting piece.

2. The apparatus of claim 1, wherein, The optical path assembly comprises an optical fiber ring structure, a third connecting piece and a fourth connecting piece; The optical fiber ring structure is sleeved on the rotating part, and in the placement direction, the optical fiber ring structure is arranged at the top of the positioning plate; The optical fiber ring structure is connected with the optical sensor of the battery to be tested through the third connecting piece; ​ The optical fiber ring structure is connected with the test device through the fourth connecting piece; The optical fiber ring structure is used to connect the battery to be tested and the test device based on the rotation of the rotating piece.

3. The apparatus of claim 2, wherein, The optical fiber ring structure comprises: The ring-shaped prism is sleeved around the rotating piece; The optical fiber inlet is used to connect the fourth connecting piece and the ring-shaped prism; The optical fiber outlet is used to slide connect the ring-shaped prism and the third connecting piece based on the rotation of the rotating piece. The test device comprises:

4. The device according to any of claims 1-3, characterized in that The electrical demodulation device is connected with the circuit component and the processing device, and is used to perform electrical detection on the battery to be tested based on the control of the processing device to obtain electrical data; wherein the electrical data comprises battery charge and discharge data and battery electrochemical data. The optical demodulation device is connected with the optical path component and the processing device, and is used to perform optical detection on the battery to be tested based on the control of the processing device to obtain optical data; wherein the optical data comprises optical sensing data and spectral data. The ray component comprises: The ray source and the detector are movably arranged on the test platform; 5. The device of any one of claims 1-3, wherein, The ray source is arranged at the first end of the fixed component, and the detector is arranged at the second end of the fixed component along the extension line of the connecting line from the ray source to the fixed component; The ray source is used to emit multiple scanning rays to the rotating battery to be tested; The detector is used to receive multiple ray signals passing through the battery to be tested and convert them into digital signals. The method is applied to the battery detection device of any one of claims 1-5, and the method comprises: Slidingly connecting the battery to be tested fixed on the fixed component with the circuit component and the optical path component; Obtaining a detection image of the rotating battery to be tested through the ray component and the test device; 6. A battery detection method characterized by comprising: Obtaining electrical data of the battery to be tested through the circuit component and the test device; Obtaining optical data of the battery to be tested through the optical path component and the test device; Performing correlation data analysis based on the obtained detection image, electrical data and optical data through the test device to obtain a detection result of the battery to be tested. The method further comprises: Performing imaging quality detection on the detection image based on a preset imaging quality condition through the test device; If it is determined that the detection image does not meet the imaging quality condition, adjusting the working parameters of the ray component based on the focusing condition of the ray component, and obtaining an adjusted image collected by the adjusted ray component until the adjusted image meets the imaging quality condition.

7. The method of claim 6, wherein, ​ ​ ​

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