Battery separator thickness detection system, detection method, and readable storage medium

Abstract

The application belongs to the technical field of measuring equipment, and particularly relates to a battery diaphragm thickness detection system, a detection method and a readable storage medium. The battery diaphragm thickness detection system comprises a control module, a ray tube, an ionization chamber, a first power supply and a second power supply. The control module controls the first power supply and the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value and total capacitance corresponding to the calibration diaphragm at this time, and to construct a multi-level database. The control module searches the multi-level database to obtain the thickness and angle of the battery diaphragm. The application solves the problems of low X-ray absorption rate of the battery diaphragm and low signal attenuation sensitivity, can improve the sensitivity of signal detection attenuation by accurately adjusting the energy of the ray tube, realizes the improvement of the accuracy of the battery diaphragm thickness detection, and breaks the situation that the diaphragm thickness detection industry has been monopolized by foreign thickness detection equipment for a long time.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of measuring equipment, and particularly relates to a testing device for electrical performance, and particularly relates to a battery separator thickness detection system, a detection method and a readable storage medium. BACKGROUND

[0002] When the X-ray thickness gauge works at a driving voltage range of 7 kV, X-rays penetrate the battery separator. Since the X-ray image needs to be analyzed, too high X-ray energy leads to too bright image, and too low X-ray energy leads to too dark image. That is, when the X-ray energy is just enough to penetrate the battery separator, the detection effect is best.

[0003] However, the super-long and super-wide battery separator will fluctuate due to its own gravity during the conveying process. The position of the X-ray tube is fixed, and the thickness required to be penetrated by the X-rays will change, which leads to the X-rays failing to penetrate the battery separator, that is, the thickness of the battery separator cannot be continuously detected during the conveying process. At the same time, the battery separator has low X-ray absorption rate and low signal attenuation sensitivity. The accuracy of the traditional X-ray thickness gauge is relatively low when measuring the thickness of the battery separator.

[0004] Therefore, it is urgent to develop a new battery separator thickness detection system, a detection method and a readable storage medium to solve the technical problem that the detection result is lost when the X-rays fail to penetrate the battery separator due to the fluctuation of the battery separator.

[0005] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, the above description is not considered to constitute the information of the prior art. SUMMARY

[0006] The present application provides at least a battery separator thickness detection system, a detection method and a readable storage medium.

[0007] In a first aspect, the embodiments of the present disclosure provide a battery separator thickness detection system, which comprises a control module, a ray tube, an ionization chamber, a first power supply and a second power supply; wherein the ray tube is arranged towards the ionization chamber, the first power supply and the second power supply are electrically connected with the ray tube respectively, and the ray tube, the ionization chamber, the first power supply and the second power supply are electrically connected with the control module respectively; the control module is configured to preheat the ray tube by discharging the first power supply; after the preheating of the ray tube is completed, calibration separators with different thicknesses and different angles are placed between the ray tube and the ionization chamber, the control module is further configured to drive the ray tube to emit probe rays, so that the control module obtains the attenuation value of the probe rays passing through the calibration separators through the ionization chamber; when the attenuation value is less than a minimum set attenuation value, the control module is further configured to control the first power supply or the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle and attenuation value of the calibration separators at this time and the adjustment voltage of the first power supply or the second power supply, and to construct a multi-level database; when the battery separator is transported between the ray tube and the ionization chamber, the control module is further configured to drive the ray tube to emit probe rays, and to obtain the corresponding attenuation value through the ionization chamber; when the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module is further configured to control the first power supply or the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the multi-level database to obtain the thickness and angle of the battery separator.

[0008] In an optional embodiment, the control module is configured to control the ray tube to be turned on and preheated at an initial calibration voltage value; during the preheating of the ray tube, the control module is further configured to control the first power supply to discharge the ray tube after a first set time, until the real-time voltage of the ray tube reaches a set voltage value, i.e., the preheating of the ray tube is completed.

[0009] In an alternative embodiment, different thickness of calibration diaphragm is placed between the ray tube and the ionization chamber, the control module is further configured to drive the ray tube to emit detection rays, so that the control module obtains the attenuation value of the detection rays passing through the calibration diaphragm by the ionization chamber, and the calibration diaphragm is rotated to obtain the corresponding attenuation value of the calibration diaphragm of different thickness at different angles, to construct a first level database; when the attenuation value obtained by the control module is less than a minimum set attenuation value, the control module is further configured to control the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, to obtain the corresponding thickness, angle, attenuation value of the calibration diaphragm and the adjustment voltage of the second power supply, to construct a second level database; when all the second power supplies are started and the attenuation value is still less than the minimum set attenuation value, the control module is further configured to control the first power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, to obtain the corresponding thickness, angle, attenuation value of the calibration diaphragm and the adjustment voltage of the first power supply, to construct a third level database; the first level database, the second level database and the third level database constitute a multi-level database.

[0010] In an alternative embodiment, when the battery diaphragm is transported between the ray tube and the ionization chamber, the control module is further configured to drive the ray tube to emit detection rays, and obtain the corresponding attenuation value by the ionization chamber, and the control module searches the first level database to obtain the thickness and angle of the battery diaphragm; when the attenuation value obtained by the control module is less than a minimum set attenuation value, the control module is further configured to control the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the second level database to obtain the thickness and angle of the battery diaphragm; when all the second power supplies are started and the attenuation value is still less than the minimum set attenuation value, the control module is further configured to control the first power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the third level database to obtain the thickness and angle of the battery diaphragm.

[0011] In an alternative embodiment, a calibration diaphragm of different thickness is placed between the ray tube and the ionization chamber, and the control module is further configured to drive the ray tube to emit detection rays, so that the control module obtains the attenuation value of the detection rays passing through the calibration diaphragm by the ionization chamber, and the calibration diaphragm is rotated to obtain the corresponding attenuation values of the calibration diaphragm of different thickness at different angles, to construct a first-level database; when the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between them is within a first preset range threshold, the control module is further configured to control the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, to obtain the thickness, angle, attenuation value of the calibration diaphragm at this time, and the adjustment voltage of the second power supply, to construct a second-level database; when the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between them exceeds the first preset range threshold, the control module is further configured to control the first power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, to obtain the thickness, angle, attenuation value of the calibration diaphragm at this time, and the adjustment voltage of the first power supply, to construct a third-level database; the first-level database, the second-level database, and the third-level database constitute a multi-level database.

[0012] In an alternative embodiment, when the battery diaphragm is transported between the ray tube and the ionization chamber, the control module is further configured to drive the ray tube to emit detection rays, and obtain the corresponding attenuation value by the ionization chamber, and the control module searches the first-level database to obtain the thickness and angle of the battery diaphragm; when the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between them is within a first preset range threshold, the control module is further configured to control the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the second-level database to obtain the thickness and angle of the battery diaphragm; when the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between them exceeds the first preset range threshold, the control module is further configured to control the first power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the third-level database to obtain the thickness and angle of the battery diaphragm.

[0013] In an alternative embodiment, the voltage range of the first power supply is 100V-1000v, the capacitance is 1UF-10UF, and the response time is 10ms-30ms; the total capacitance of the second power supply is 10v-100V, the capacitance is 60nF-70nF, and the response time is 0.1μs-1μs; the maximum voltage of the second power supply is consistent with the minimum voltage of the first power supply.

[0014] In an alternative embodiment, the first power supply comprises a high-voltage diaphragm capacitor, and the capacitance of the high-voltage diaphragm capacitor is 1 UF-10 UF; and the second power supply comprises a ceramic capacitor, and the capacitance of the ceramic capacitor is 60 nF-70 nF.

[0015] In a second aspect, the embodiments of the present disclosure further provide a detection method of the battery diaphragm thickness detection system, which comprises the following steps: the control module preheats the ray tube by the first power supply; when the preheating of the ray tube is completed, the calibration diaphragm with different thicknesses and different angles is placed between the ray tube and the ionization chamber, the control module drives the ray tube to emit the detection ray, so that the control module obtains the attenuation value of the detection ray passing through the calibration diaphragm through the ionization chamber; when the attenuation value is less than the minimum set attenuation value, the control module controls the first power supply or the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value of the calibration diaphragm at this time and the adjustment voltage of the first power supply or the second power supply, and to construct a multi-level database; when the battery diaphragm is conveyed between the ray tube and the ionization chamber, the control module drives the ray tube to emit the detection ray, and obtains the corresponding attenuation value through the ionization chamber; when the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module controls the first power supply or the second power supply to discharge the ray tube until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the multi-level database to obtain the thickness and angle of the battery diaphragm.

[0016] In a third aspect, the embodiments of the present disclosure further provide a non-transitory readable storage medium, which stores a computer program / instruction, and the computer program / instruction is executed by a processor to realize the steps of the above detection method.

[0017] The present application has the advantages that the first power supply and the second power supply are arranged to compensate the voltage of the ray tube, the attenuation value detected and the adjustment voltage compensated are calibrated by the diaphragm with different thicknesses at different angles, a multi-level database is constructed, the voltage compensation is performed by the first power supply and the second power supply during the conveying of the battery diaphragm, the detection ray emitted by the ray tube can be received by the ionization chamber, the thickness and angle of the battery diaphragm can be quickly obtained by searching the multi-level database in the reverse direction through the adjustment voltage compensated, the continuity of detection is ensured, the timeliness of detection under the high-speed conveying of the battery diaphragm is met, the problem of low absorption rate of the battery diaphragm to X-ray and low signal attenuation sensitivity is solved, the sensitivity of signal detection attenuation is improved by accurately adjusting the energy of the ray tube, and the accuracy of battery diaphragm thickness detection is improved.

[0018] Other features and advantages of the present application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the application. The purposes and other advantages of the present application will be realized and attained by the structure particularly pointed out in the description and appended claims.

[0019] In order to make the above objectives, features and advantages of the present application more apparent, the following will describe a preferred embodiment in detail, and the accompanying drawings will be referred to, as follows. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0021] Figure 1 A principle block diagram of a battery separator thickness detection system provided by the embodiment of the present disclosure is shown in the figure.

[0022] Figure 2 A flowchart of ray tube preheating provided by the embodiment of the present disclosure is shown in the figure.

[0023] Figure 3 A flowchart of constructing a multi-level database provided by the embodiment of the present disclosure is shown in the figure.

[0024] Figure 4 A flowchart of searching a multi-level database provided by the embodiment of the present disclosure is shown in the figure.

[0025] Figure 5 A structure diagram of a battery separator thickness detection system provided by the embodiment of the present disclosure is shown in the figure.

[0026] In the figure:

[0027] 1, ray tube; 2, ionization chamber; 3, battery separator. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be described clearly and completely in the following with reference to the drawings. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0029] The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" can be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order

[0030] As used herein, the phrases "in an embodiment," "according to an embodiment," "in some embodiments," and the like generally mean the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present disclosure. Thus, appearances of such phrases in various places throughout this specification do not necessarily all refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are utilized to merely indicate that an example or exemplary feature, structure, or characteristic is included in at least one embodiment. Thus, the inclusion of such phrases in various places throughout this specification is not necessarily intended to refer to the same embodiment. Rather, such phrases are utilized to indicate that the feature, structure, or characteristic so stated is included in at least one embodiment.

[0031] It is found through research that when the X-ray thickness gauge is working, X-rays are emitted to penetrate the battery separator. Since the X-ray image needs to be analyzed, too high X-ray energy causes the image to be too bright, and too low X-ray energy causes the image to be too dark, that is, when the X-ray energy needs to just penetrate the battery separator, the detection effect is best. However, the battery separator with an ultra-long and ultra-wide size will fluctuate due to its own gravity during conveying. The position of the ray tube is fixed, and the thickness that needs to be penetrated by the X-rays will change, resulting in that the X-rays cannot penetrate the battery separator, that is, the thickness of the battery separator cannot be continuously detected during the conveying of the battery separator.

[0032] Based on the above research, the battery separator thickness detection system, detection method and readable storage medium provided by the embodiments of the present disclosure can ensure that the detection X-rays emitted by the ray tube are received by the ionization chamber through voltage compensation of the ray tube, and the thickness and angle of the battery separator can be quickly obtained through reverse search of the multi-level database by the adjusted compensation voltage, so as to ensure the continuity of detection and meet the timeliness of detection under high-speed conveying of the battery separator.

[0033] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure below should be considered as the inventor's contribution to this disclosure.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] like Figures 1 to 5 As shown, at least one embodiment provides a battery separator thickness detection system, comprising: a control module, a X-ray tube 1, an ionization chamber 2, a first power supply, and a second power supply; wherein the X-ray tube 1 is disposed facing the ionization chamber 2, the first power supply and the second power supply are electrically connected to the X-ray tube 1, and the X-ray tube 1, the ionization chamber 2, the first power supply, and the second power supply are electrically connected to the control module; the control module is configured to preheat the X-ray tube 1 by discharging the first power supply; after the X-ray tube 1 is preheated, calibration separators of different thicknesses and angles are placed between the X-ray tube 1 and the ionization chamber 2, and the control module is further configured to drive the X-ray tube 1 to emit probe rays, so that the control module obtains the attenuation value of the probe rays passing through the calibration separator through the ionization chamber 2; when the attenuation value is less than a minimum set attenuation value... At the same time, the control module is also configured to control the first power supply or the second power supply to discharge the X-ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value and adjustment voltage of the first power supply or the second power supply corresponding to the calibrated diaphragm at this time, so as to build a multi-level database; when the battery diaphragm 3 is transported between the X-ray tube 1 and the ionization chamber 2, the control module is also configured to drive the X-ray tube 1 to emit detection rays and obtain the corresponding attenuation value through the ionization chamber 2. When the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module is also configured to control the first power supply and the second power supply to discharge the X-ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the multi-level database to obtain the thickness and angle of the battery diaphragm 3.

[0037] In at least one embodiment, the first power supply and the second power supply are configured to compensate for voltage of the ray tube 1, and the detected attenuation value and the compensated adjustment voltage at different angles are calibrated through the different thicknesses of the diaphragm, thereby constructing a multi-level database. During the conveying of the battery diaphragm 3, the first power supply and the second power supply are configured to compensate for voltage, so that the detection rays emitted by the ray tube 1 can be received by the ionization chamber 2, and the thickness and angle of the battery diaphragm 3 can be quickly obtained through reverse search of the multi-level database based on the compensated adjustment voltage, so as to ensure the continuity of detection and the timeliness of detection under high-speed conveying of the battery diaphragm 3. That is, the problem of low X-ray absorption rate and low signal attenuation sensitivity of the battery diaphragm 3 is solved, and the sensitivity of signal detection attenuation is improved by accurately adjusting the energy of the ray tube 1, thereby improving the accuracy of thickness detection of the battery diaphragm 3.

[0038] In at least one embodiment, referring to Figure 2 , the control module is configured to control the ray tube 1 to be turned on and preheated at an initial calibration voltage value. During the preheating of the ray tube 1, the control module is further configured to control the first power supply to discharge the ray tube 1 after a first set time, until the real-time voltage of the ray tube 1 reaches a set voltage value, that is, the preheating of the ray tube 1 is completed.

[0039] Specifically, the first power supply has energy storage and slow release characteristics, which can stabilize the voltage baseline, compensate for cold state fluctuations, and assist in component heating during the preheating stage, thereby solving problems such as impact current of the ray tube 1, unstable output of the high-voltage inverter, signal drift of the ionization chamber 2, etc. during cold start, which can shorten the preheating time and strengthen X-ray hardening prevention and control, and is an effective auxiliary means for the preheating process.

[0040] Specifically, the core requirement of preheating is to gradually increase the voltage and current to avoid cold-state impact, which can be achieved by the large-capacity characteristics of the first power supply.

[0041] Specifically, voltage buffering refers to the first power supply absorbing voltage fluctuations by slow charging when the high-voltage inverter gradually increases from low voltage to high voltage, avoiding sharp peaks in output voltage, and ensuring smooth rise of the anode voltage of the ray tube 1.

[0042] Specifically, current suppression refers to the fact that the cold filament resistance is small (e.g., normal filament cold resistance is 5Ω, and hot resistance is 15Ω), and direct voltage connection is prone to impact current (which may reach 8mA, far exceeding the rated 5mA). The first power supply can reduce the initial current slope by series current limiting (or parallel energy storage), so that the current of the ray tube 1 gradually increases from a low amplitude (e.g., 2mA) to a target value.

[0043] Specifically, after the ray tube 1 completes preheating, the first power supply and the second power supply are both fully charged, the discharge duration of the first power supply and the second power supply is recorded, and the first power supply and the second power supply are sorted.

[0044] Specifically, the first power supply and the second power supply are charged to half of the capacity in the initial stage.

[0045] In at least one embodiment, referring to Figure 3 The control module is further configured to drive the ray tube 1 to emit detection rays, so that the control module obtains the attenuation value of the detection rays passing through the calibration diaphragm through the ionization chamber 2, and the calibration diaphragm is rotated to obtain the corresponding attenuation values of the calibration diaphragm of different thicknesses at different angles, to construct a first-level database; when the attenuation value obtained by the control module is less than a minimum set attenuation value, the control module is further configured to control the second power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, to obtain the thickness, angle, attenuation value of the calibration diaphragm and the adjustment voltage of the second power supply at this time, and to construct a second-level database; when all the second power supplies are started and the attenuation value is still less than the minimum set attenuation value, the control module is further configured to control the first power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, to obtain the thickness, angle, attenuation value of the calibration diaphragm and the adjustment voltage of the first power supply at this time, and to construct a third-level database; the first-level database, the second-level database and the third-level database constitute a multi-level database.

[0046] Specifically, the thickness of the battery diaphragm 3 has certain standard specifications, for example: 5 μm, 10 μm, 20 μm, etc. There is a certain error in the actual production process of the battery diaphragm 3, which causes the thickness of the battery diaphragm 3 to be a non-standard specification. Therefore, the data of the standard specification battery diaphragm 3 and the data of the non-standard specification battery diaphragm 3 are also distinguished in the first-level database, the second-level database and the third-level database. A high-definition camera is arranged on the side of the battery diaphragm 3, and the detection positions of the high-definition camera, the ray tube 1 and the ionization chamber 2 on the battery diaphragm 3 are on the same straight line. The control module detects the edge image of the battery diaphragm 3 through the high-definition camera, and can detect the angle of the battery diaphragm 3. Since there is a certain error in calculating the angle of the battery diaphragm 3 from the edge image of the battery diaphragm 3, the thickness and angle of the battery diaphragm 3 cannot be directly obtained through the high-definition camera in cooperation with the ray tube 1 and the ionization chamber 2.

[0047] Specifically, when detecting different standard specification battery separators 3, the attenuation value and the adjustment voltage of any standard specification battery separator 3 at different angles in one of the first-level database, the second-level database, and the third-level database do not coincide with the attenuation value and the adjustment voltage of other standard specification battery separators 3 at different angles in other databases. Similarly, the data in one of the databases do not coincide with the data in other databases, but the attenuation value and the adjustment voltage in one database correspond to multiple thicknesses and angles. After the attenuation value and the adjustment voltage are obtained, one of the databases is first confirmed, and the corresponding thickness and angle in the database are selected. Meanwhile, the control module compares the angle detected by the high-definition camera with the selected angles in the database, and if the angle detected by the high-definition camera matches the selected angle in the database within an error tolerance range, the thickness corresponding to the angle is the thickness of the battery separator 3.

[0048] Specifically, the calibration separator is placed horizontally between the ray tube 1 and the ionization chamber 2, and the attenuation value of the X-rays received by the ionization chamber 2 is recorded. Then, the calibration separator is rotated at a plurality of preset angles, and the attenuation value of the calibration separator at the corresponding angle is recorded. If the X-ray attenuation value at a certain preset angle is less than the minimum set attenuation value, the second power supply is discharged immediately to compensate the energy of the ray tube 1. If the attenuation value of the X-rays received by the ionization chamber 2 is higher than the minimum set attenuation value at this time, the thickness, angle, attenuation value, and adjustment voltage of the second power supply corresponding to the calibration separator at this time are recorded. If the X-ray attenuation value is still less than the minimum set attenuation value after the second power supply is discharged at full power, the first power supply is started until the attenuation value of the X-rays received by the ionization chamber 2 is higher than the minimum set attenuation value. The thickness, angle, attenuation value, and adjustment voltage of the first power supply corresponding to the calibration separator at this time are recorded.

[0049] Specifically, by constructing the first-level database, the second-level database, and the third-level database, it is convenient to quickly find the corresponding data when additional energy compensation or separate second power supply compensation or first power supply compensation is required.

[0050] In at least one embodiment, please refer to Figure 4When the battery separator 3 is transported between the ray tube 1 and the ionization chamber 2, the control module is further configured to drive the ray tube 1 to emit detection rays, and obtain the corresponding attenuation value through the ionization chamber 2, and search the first-level database to obtain the thickness and angle of the battery separator 3; when the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module is further configured to control the second power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, and search the second-level database to obtain the thickness and angle of the battery separator 3; when all the second power supplies are started and the attenuation value is still less than the minimum set attenuation value, the control module is further configured to control the first power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, and search the third-level database to obtain the thickness and angle of the battery separator 3.

[0051] Specifically, the battery separator 3 is transported between the ray tube 1 and the ionization chamber 2, and the ionization chamber 2 obtains the corresponding attenuation value. If the attenuation value is greater than the minimum set attenuation value at this time, it means that no energy compensation needs to be performed by starting any capacitor group, and direct comparison with the data in the first-level database can quickly find the thickness and angle of the battery separator 3. If the attenuation value is less than the minimum set attenuation value at this time, the second power supply is started for energy compensation first. When the obtained attenuation value is higher than the minimum set attenuation value, direct comparison with the data in the second-level database can quickly find the thickness and angle of the battery separator 3. If the attenuation value is still less than the minimum set attenuation value after the second power supply is started for energy compensation, the first power supply needs to be started for energy compensation until the obtained attenuation value is higher than the minimum set attenuation value, and direct comparison with the data in the third-level database can quickly find the thickness and angle of the battery separator 3.

[0052] Specifically, by comparing with the data in the first-level database, the second-level database and the third-level database respectively, targeted special search can be performed under different energy compensation, the amount of data comparison is reduced, and the detection efficiency is improved.

[0053] In at least one embodiment, a calibration diaphragm of different thickness is placed between the ray tube 1 and the ionization chamber 2, and the control module is further configured to drive the ray tube 1 to emit probe rays, so that the control module obtains the attenuation value of the probe rays passing through the calibration diaphragm through the ionization chamber 2, and the calibration diaphragm is rotated to obtain the corresponding attenuation values of the calibration diaphragm of different thickness at different angles, to construct a first-level database; when the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between them is within a first preset range threshold, the control module is further configured to control the second power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, to obtain the thickness, angle, attenuation value of the calibration diaphragm at this time, and the adjustment voltage of the second power supply, to construct a second-level database; when the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between them exceeds the first preset range threshold, the control module is further configured to control the first power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, to obtain the thickness, angle, attenuation value of the calibration diaphragm at this time, and the adjustment voltage of the first power supply, to construct a third-level database; the first-level database, the second-level database, and the third-level database constitute a multi-level database.

[0054] Specifically, the difference between the attenuation value and the minimum set attenuation value is directly used to determine whether the second power supply or the first power supply needs to be separately turned on for energy compensation, which can improve the test efficiency, but this case is applicable to the case where the attenuation value can be detected.

[0055] In at least one embodiment, when the battery diaphragm 3 is transported between the ray tube 1 and the ionization chamber 2, the control module is further configured to drive the ray tube 1 to emit probe rays, and obtain the corresponding attenuation value through the ionization chamber 2, and the control module searches the first-level database to obtain the thickness and angle of the battery diaphragm 3; when the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between them is within a first preset range threshold, the control module is further configured to control the second power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the second-level database to obtain the thickness and angle of the battery diaphragm 3; when the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between them exceeds the first preset range threshold, the control module is further configured to control the first power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the third-level database to obtain the thickness and angle of the battery diaphragm 3.

[0056] In at least one embodiment, the first power supply has a voltage range of 100V-1000v, a capacitor of 1UF-10UF, and a response time of 10ms-30ms; the second power supply has a total capacitance of 10v-100V, a capacitor of 60nF-70nF, and a response time of 0.1μs-1μs; and the maximum voltage of all the second power supplies is consistent with the minimum voltage of the first power supply.

[0057] Specifically, the first power supply is used to stabilize the voltage, compensate for slow fluctuations, and reduce the accumulation of low-energy photon proportion.

[0058] Specifically, the second power supply is used to offset the current transient fluctuations of the ray tube 1 and avoid the transient increase of low-energy photons.

[0059] Specifically, the second power supply is used to offset the current transient fluctuations of the ray tube 1 and avoid the transient increase of low-energy photons.

[0060] In at least one embodiment, the first power supply includes a high-voltage diaphragm capacitor, and the capacitance of the high-voltage diaphragm capacitor is 1UF-10UF; and the second power supply includes a ceramic capacitor, and the capacitance of the ceramic capacitor is 60nF-70nF.

[0061] Specifically, the first power supply uses a high-voltage diaphragm capacitor to ensure capacity, and the second power supply uses a ceramic capacitor to ensure response speed.

[0062] Specifically, the first power supply and the second power supply are connected in parallel on the ray tube 1, forming a double guarantee of slow compensation and fast compensation.

[0063] Based on the same technical concept, at least one embodiment also provides a detection method using the battery separator thickness detection system as described above, which comprises: the control module preheats the ray tube 1 through the first power supply; when the preheating of the ray tube 1 is completed, the calibration separator of different thickness and different angle is put between the ray tube 1 and the ionization chamber 2, the control module drives the ray tube 1 to emit the detection ray, so that the control module obtains the attenuation value of the detection ray passing through the calibration separator through the ionization chamber 2; when the attenuation value is less than the minimum set attenuation value, the control module controls the first power supply or the second power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value of the calibration separator at this time and the total capacitance of the first power supply or the second power supply, so as to construct a multi-level database; when the battery separator 3 is conveyed between the ray tube 1 and the ionization chamber 2, the control module drives the ray tube 1 to emit the detection ray, and obtains the corresponding attenuation value through the ionization chamber 2, when the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module controls the first power supply or the second power supply to discharge the ray tube 1 until the obtained attenuation value is higher than the minimum set attenuation value, and the control module searches the multi-level database to obtain the thickness and angle of the battery separator 3.

[0064] Based on the same technical concept, at least one embodiment also provides a non-transitory readable storage medium having a computer program / instruction stored thereon, which is executed by a processor to implement the steps of the above detection method.

[0065] In summary, the first power supply and the second power supply are arranged to compensate the voltage of the ray tube, and the total capacitance of the detected attenuation value and the compensation is calibrated through the separator of different thickness at different angles, and then a multi-level database is constructed, and the voltage compensation is performed through the first power supply and the second power supply during the conveying of the battery separator, so that the detection ray emitted by the ray tube can be received by the ionization chamber, and the thickness and angle of the battery separator can be quickly obtained through the reverse search of the multi-level database through the compensated total capacitance, so as to ensure the continuity of detection and meet the timeliness of detection under the high-speed conveying of the battery separator, that is, to solve the problems of low X-ray absorption rate of the battery separator and low signal attenuation sensitivity, and through the accurate adjustment of the energy of the ray tube, the sensitivity of the signal detection attenuation can be improved, the accuracy of the battery separator thickness detection can be improved, and the situation that the separator thickness detection industry has been monopolized by foreign thickness detection equipment for a long time is broken.

[0066] The disclosures and other solutions, examples, embodiments, modules and functional operations described in this document can be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this document and their structural equivalents, or in combinations of one or more of them. The disclosed and other embodiments can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a tangible and non-transitory computer readable medium for execution by, or to control the operation of, data processing apparatus. The computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine-readable propagated signal, or a combination of one or more of them. The term "data processing apparatus" encompasses all apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can also include, in addition to a hardware component, code that creates an execution environment for computer programs, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus.

[0067] A computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code). A computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and are interconnected by a communication network.

[0068] The processes and logic flows described in this document can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by special purpose logic circuitry, and that apparatus can also be implemented as special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0069] Processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. Generally, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto-optical disks, or optical disks. However, a computer need not have such devices. Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto-optical disks; and CD-ROM, DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.

[0070] Although this patent document contains many details, it should not be construed to limit the scope of any invention or claim in any way. This patent document describes features of specific embodiments within separate embodiments. The features described within separate embodiments can also be combined in a single embodiment. Conversely, the features described within a single embodiment can also be split into several embodiments. Moreover, although the above-described features can be described as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination and the claimed combination can be directed to a sub-combination or a variation of a sub-combination.

[0071] Also, although operations can be described as being performed in a particular order in the figures, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Further, the separation of various system components in the embodiments described herein should not be understood as requiring such separation in all embodiments.

[0072] Only a few implementations and examples are described and other implementations, enhancements and variations can be made based on what is described and illustrated in this patent document.

[0073] A first component is directly coupled to a second component when there is no intervening component between the first component and the second component other than a wire, trace, or another medium. A first component is indirectly coupled to a second component when there is an intervening component between the first component and the second component other than a wire, trace, or another medium. The term “coupled” and variations thereof include both direct and indirect coupling. Use of the term “about” means a range of plus or minus 10% of the value unless otherwise indicated.

[0074] While embodiments are provided in the present disclosure, it is understood that the disclosed systems and methods can be carried out in many other specific forms without departing from the spirit or scope of the present disclosure. The present examples are to be considered as illustrative and not restrictive, and the intention is not to limit the disclosure to the details given, since the moval and variations therefrom will suggest themselves to those skilled in the art. For example, one or more elements or components can be combined or integrated into another system, or certain features can be omitted or not implemented.

[0075] In several embodiments provided herein, it is to be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative, for example, the flowcharts and block diagrams in the drawings show possible architectural, functional, and operational scenarios of apparatuses, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment, or a portion of code that comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in a different order than that shown in the figures. For example, two blocks shown in succession can in fact be executed substantially concurrently or in the reverse order, depending on the functionality involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented by dedicated hardware-based systems that perform the specified functions or acts, or can be implemented by a combination of dedicated hardware and computer instructions.

[0076] Moreover, the discrete or separate technologies, systems, subsystems, and methods described and illustrated in the various embodiments can be combined or integrated with other systems, modules, technologies, or methods without departing from the scope of the present disclosure. Other items shown or discussed as coupled can be directly coupled or can be indirectly coupled or communicating through some interface, device, or intermediate component, whether electrically, mechanically, or otherwise. Other examples of changes, substitutions, and alterations are ascertainable by one skilled in the art and could be made without departing from the spirit and scope disclosed herein.

Claims

1. A battery separator thickness detection system, characterized in that, include: Control module, X-ray tube (1), ionization chamber (2), first power supply and second power supply; in The X-ray tube (1) is positioned facing the ionization chamber (2). The first power supply and the second power supply are electrically connected to the X-ray tube (1) respectively. The X-ray tube (1), the ionization chamber (2), the first power supply and the second power supply are electrically connected to the control module respectively. The control module is configured to preheat the ray tube (1) by discharging through the first power supply; After the X-ray tube (1) is preheated, calibration diaphragms of different thicknesses and angles are placed between the X-ray tube (1) and the ionization chamber (2). The control module is also configured to drive the X-ray tube (1) to emit probe rays so that the control module can obtain the attenuation value of the probe rays passing through the calibration diaphragm through the ionization chamber (2). When the attenuation value is less than the minimum set attenuation value, the control module is also configured to control the first power supply or the second power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value and adjustment voltage of the first power supply or the second power supply corresponding to the calibrated diaphragm at this time, so as to build a multi-level database. When the battery separator (3) is transported between the X-ray tube (1) and the ionization chamber (2), the control module is also configured to drive the X-ray tube (1) to emit detection rays and obtain the corresponding attenuation value through the ionization chamber (2). When the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module is also configured to control the first power supply and the second power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value. The control module searches a multi-level database to obtain the thickness and angle of the battery separator (3).

2. The battery separator thickness detection system as described in claim 1, characterized in that, The control module is configured to control the X-ray tube (1) to turn on and preheat it according to the initial calibrated voltage value; During the preheating process of the X-ray tube (1), the control module is also configured to control the first power supply to discharge the X-ray tube (1) after a first set time until the real-time voltage of the X-ray tube (1) reaches the set voltage value, thus completing the preheating of the X-ray tube (1).

3. The battery separator thickness detection system as described in claim 1, characterized in that, Calibration diaphragms of different thicknesses are placed between the X-ray tube (1) and the ionization chamber (2). The control module is also configured to drive the X-ray tube (1) to emit probe rays so that the control module can obtain the attenuation value of the probe rays passing through the calibration diaphragm through the ionization chamber (2). When the calibration diaphragm rotates, the attenuation value corresponding to the calibration diaphragm of different thicknesses at different angles is obtained to construct a first-level database. When the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module is also configured to control the second power supply to discharge the ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value and adjustment voltage of the second power supply corresponding to the calibration diaphragm at this time, and construct the second-level database. When all second power supplies are started and the attenuation value is still less than the minimum set attenuation value, the control module is also configured to control the first power supply to discharge the ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value and adjustment voltage of the first power supply corresponding to the calibration diaphragm at this time, and construct the third-level database. A multi-level database consists of a first-level database, a second-level database, and a third-level database.

4. The battery separator thickness detection system as described in claim 3, characterized in that, When the battery separator (3) is conveyed between the ray tube (1) and the ionization chamber (2), the control module is also configured to drive the ray tube (1) to emit detection rays and obtain the corresponding attenuation value through the ionization chamber (2), and the control module searches the first-level database to obtain the thickness and angle of the battery separator (3); When the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module is also configured to control the second power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value. The control module then searches the second-level database to obtain the thickness and angle of the battery separator (3). When all second power supplies are started and the attenuation value is still less than the minimum set attenuation value, the control module is also configured to control the first power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value. The control module then searches the third-level database to obtain the thickness and angle of the battery separator (3).

5. The battery separator thickness detection system as described in claim 1, characterized in that, Calibration diaphragms of different thicknesses are placed between the X-ray tube (1) and the ionization chamber (2). The control module is also configured to drive the X-ray tube (1) to emit probe rays so that the control module can obtain the attenuation value of the probe rays passing through the calibration diaphragm through the ionization chamber (2). When the calibration diaphragm rotates, the attenuation value corresponding to the calibration diaphragm of different thicknesses at different angles is obtained to construct a first-level database. When the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between the two is within the first preset range threshold, the control module is also configured to control the second power supply to discharge the ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value and adjustment voltage of the second power supply corresponding to the calibration diaphragm at this time, and construct the second level database. When the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between the two exceeds the first preset range threshold, the control module is also configured to control the first power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value and adjustment voltage of the first power supply corresponding to the calibrated diaphragm at this time, and construct the third-level database. A multi-level database consists of a first-level database, a second-level database, and a third-level database.

6. The battery separator thickness detection system as described in claim 5, characterized in that, When the battery separator (3) is conveyed between the ray tube (1) and the ionization chamber (2), the control module is also configured to drive the ray tube (1) to emit detection rays and obtain the corresponding attenuation value through the ionization chamber (2), and the control module searches the first-level database to obtain the thickness and angle of the battery separator (3); When the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between the two is within the first preset range threshold, the control module is also configured to control the second power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value. The control module then searches the second-level database to obtain the thickness and angle of the battery separator (3). When the attenuation value obtained by the control module is less than the minimum set attenuation value and the difference between the two exceeds the first preset range threshold, the control module is also configured to control the first power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value. The control module then searches the third-level database to obtain the thickness and angle of the battery separator (3).

7. The battery separator thickness detection system as described in claim 1, characterized in that, The first power supply has a voltage range of 100V-1000V, uses 1UF-10UF capacitors, and has a response time of 10ms-30ms; The second power supply has a total capacitance of 10V-100V, uses 60nF-70nF capacitors, and has a response time of 0.1μs-1μs. The maximum voltage of all second power supplies is the same as the minimum voltage of the first power supply.

8. The battery separator thickness detection system as described in claim 7, characterized in that, The first power supply includes: a high-voltage diaphragm capacitor; The capacitance of the high-voltage diaphragm capacitor is 1UF-10UF. The second power supply includes: a ceramic capacitor; The capacitance of the ceramic capacitor is 60nF-70nF.

9. A detection method using the battery separator thickness detection system as described in any one of claims 1-8, characterized in that, include: The control module preheats the ray tube (1) through the first power supply; After the X-ray tube (1) is preheated, calibration diaphragms of different thicknesses and angles are placed between the X-ray tube (1) and the ionization chamber (2). The control module drives the X-ray tube (1) to emit detection rays so that the control module can obtain the attenuation value of the detection rays passing through the calibration diaphragm through the ionization chamber (2). When the attenuation value is less than the minimum set attenuation value, the control module controls the first power supply or the second power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value, so as to obtain the thickness, angle, attenuation value and adjustment voltage of the first power supply or the second power supply corresponding to the calibration diaphragm at this time, so as to build a multi-level database. When the battery separator (3) is transported between the X-ray tube (1) and the ionization chamber (2), the control module drives the X-ray tube (1) to emit detection rays and obtains the corresponding attenuation value through the ionization chamber (2). When the attenuation value obtained by the control module is less than the minimum set attenuation value, the control module controls the first power supply or the second power supply to discharge the X-ray tube (1) until the obtained attenuation value is higher than the minimum set attenuation value. The control module searches the multi-level database to obtain the thickness and angle of the battery separator (3).

10. A non-transitory readable storage medium storing a computer program / instruction thereon, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the detection method of claim 9.

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