A control method, device, system and terminal device for ultrasonic scanning of a lithium battery

Abstract

The present invention discloses a control method, device, system and terminal device for ultrasonic scanning of a lithium battery. By obtaining the position parameter of the detection point of the lithium battery to be detected, generating a scanning control parameter file, performing an ultrasonic scanning operation, controlling the mechanical motion control module to move the first probe and the second probe to the detection point according to the moving trajectory, controlling the first probe to be respectively connected to the first transmitting circuit and the first receiving circuit, controlling the second receiving circuit to be connected to the second probe, controlling the first transmitting circuit to operate according to the ultrasonic control parameter of the first probe to obtain the first ultrasonic data; after the ultrasonic control parameter of the first probe is executed, controlling the first probe to be connected to the first receiving circuit, controlling the second probe to be respectively connected to the second transmitting circuit and the second receiving circuit, controlling the second transmitting circuit to operate according to the ultrasonic control parameter of the second probe to obtain the second ultrasonic data. Analyze the structure information of the lithium battery to be detected based on the first ultrasonic data and the second ultrasonic data of each detection point.

Description

Technical Field

[0001] The present invention relates to the field of dot digital data processing, and particularly to a control method, device, system and terminal device for ultrasonic scanning of lithium batteries. Background Art

[0002] In order to ensure the safety of lithium batteries, safety inspections are required during their R & D, production and use. Some common voltage and current methods cannot detect problems such as electrolyte infiltration, gas, and lithium deposition in lithium batteries. Ultrasonic devices, due to their characteristics such as no radiation and sensitivity to gas, are very suitable for detecting these problems in lithium batteries. The current ultrasonic detection method for lithium batteries uses these acoustic changes to detect the material characteristics inside the lithium battery, such as whether there is gas. By placing ultrasonic probes on both sides of the inspected object, one probe emits ultrasonic signals and the other probe receives ultrasonic signals. Based on the principle of transmission imaging, the characteristics of the inspected object are evaluated through the analysis of the transmitted signals.

[0003] However, ultrasonic detection will have a large error when there are defects on the surface of the lithium battery because the first specular reflection is very strong, causing the signal change on one side to affect the signal of the next battery structure and forming shadow artifacts. Therefore, the existing ultrasonic detection scanning of lithium batteries has the problem of low accuracy.

[0004] Therefore, there is an urgent need for a control strategy for ultrasonic scanning of lithium batteries to solve the problem of low accuracy in ultrasonic detection scanning of lithium batteries. Summary of the Invention

[0005] Embodiments of the present invention provide a control method, device, system and terminal device for ultrasonic scanning of lithium batteries to improve the accuracy of ultrasonic detection scanning of lithium batteries.

[0006] To solve the above problems, an embodiment of the present invention provides a control method for ultrasonic scanning of a lithium battery, controlling an ultrasonic scanning device; the ultrasonic scanning device includes: a mechanical motion control module, a first probe, a first transmitting circuit, a first receiving circuit, a second probe, a second transmitting circuit and a second receiving circuit; wherein, the first probe and the second probe are arranged on both sides of the lithium battery to be detected, and the center of the surface of the first probe is aligned with the center of the surface of the second probe on a straight line;

[0007] The control method includes:

[0008] Obtain the position parameters of each detection point of the lithium battery to be detected;

[0009] Generate a scanning control parameter file corresponding to each detection point position parameter; wherein, the scanning control parameter file includes: a moving trajectory, first probe ultrasonic control parameters and second probe ultrasonic control parameters;

[0010] Repeat the ultrasonic scanning operation until it stops after all the scanning control parameter files have been executed; wherein, the ultrasonic scanning operation includes: selecting a scanning control parameter file as the selected scanning control parameter file from the scanning control parameter files where the ultrasonic scanning operation has not been performed, and controlling the mechanical motion control module to move the first probe and the second probe simultaneously to the detection point corresponding to the selected scanning control parameter file according to the movement trajectory corresponding to the selected scanning control parameter file; when the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, controlling the first transmitting circuit and the first receiving circuit to be connected to the first probe respectively, and controlling the second receiving circuit and the second probe to be connected, and controlling the first transmitting circuit to operate according to the first probe ultrasonic control parameter corresponding to the selected scanning control parameter file to obtain the first ultrasonic data; and after the first probe ultrasonic control parameter corresponding to the selected scanning control parameter file has been executed, controlling the first receiving circuit and the first probe to be connected, and controlling the second transmitting circuit and the second receiving circuit to be connected to the second probe respectively, and controlling the second transmitting circuit to operate according to the second probe ultrasonic control parameter corresponding to the selected scanning control parameter file to obtain the second ultrasonic data; the first ultrasonic data includes: the first reflected signal data received by the first probe and the first transmitted signal data received by the second probe; the second ultrasonic data includes: the second reflected signal data received by the second probe and the second transmitted signal data received by the first probe;

[0011] Summarize the first ultrasonic data and the second ultrasonic data of each detection point to obtain the structural ultrasonic data of the lithium battery to be detected.

[0012] As an improvement of the above solution, the ultrasonic scanning device further includes: a first switch circuit and a second switch circuit; the first switch circuit is used to control the connection between the first probe and the first transmitting circuit or the first receiving circuit, and the second switch circuit is used to control the connection between the second probe and the second transmitting circuit or the second receiving circuit;

[0013] The first probe is connected to the first switch circuit, and the first switch circuit is respectively connected to the first transmitting circuit and the first receiving circuit; the second probe is connected to the second switch circuit, and the second switch circuit is respectively connected to the second transmitting circuit and the second receiving circuit; the mechanical motion control module is respectively connected to the first probe and the second probe.

[0014] As an improvement of the above solution, generating the scanning control parameter file corresponding to each detection point position parameter includes:

[0015] Generating the movement trajectory corresponding to each detection point position parameter according to every two detection point position parameters;

[0016] Calculate the unit detection area according to the number of detection point position parameters and the area of the lithium battery to be detected.

[0017] Obtain the first probe ultrasonic control parameter and the second probe ultrasonic control parameter corresponding to each detection point position parameter according to the unit detection area; wherein, the first probe ultrasonic control parameter includes: the first probe ultrasonic emission signal frequency and the first probe ultrasonic emission signal duration; the second probe ultrasonic control parameter includes: the second probe ultrasonic emission signal frequency and the second probe ultrasonic emission signal duration.

[0018] Generate a scan control parameter file corresponding to each detection point position parameter according to the movement trajectory, the first probe ultrasonic control parameter and the second probe ultrasonic control parameter.

[0019] As an improvement of the above solution, when the first probe and the second probe reach the detection point corresponding to the selected scan control parameter file, controlling the first transmitting circuit and the first receiving circuit to be respectively connected to the first probe, and controlling the second receiving circuit and the second probe to be connected, includes:

[0020] When the first probe and the second probe reach the detection point corresponding to the selected scan control parameter file, generate a first control signal, so that the first switch circuit controls the first probe to be respectively connected to the first transmitting circuit and the first receiving circuit according to the first control signal, and the second switch circuit controls the second probe to be connected to the second receiving circuit according to the first control signal.

[0021] As an improvement of the above solution, when the first probe ultrasonic control parameter corresponding to the selected scan control parameter file is executed, controlling the first receiving circuit and the first probe to be connected, and controlling the second transmitting circuit and the second receiving circuit to be respectively connected to the second probe, includes:

[0022] When the first probe ultrasonic control parameter corresponding to the selected scan control parameter file is executed, generate a second control signal, so that the first switch circuit controls the first probe to be connected to the first receiving circuit according to the second control signal, and the second switch circuit controls the second probe to be respectively connected to the second transmitting circuit and the second receiving circuit according to the second control signal.

[0023] Correspondingly, an embodiment of the present invention further provides a control device for ultrasonic scanning of a lithium battery, which controls an ultrasonic scanning device; the ultrasonic scanning device includes: a mechanical motion control module, a first probe, a first transmitting circuit, a first receiving circuit, a second probe, a second transmitting circuit, and a second receiving circuit; wherein, the first probe and the second probe are arranged on both sides of the lithium battery to be detected, and the center of the surface of the first probe is aligned with the center of the surface of the second probe on a straight line;

[0024] The control device includes: a data acquisition module, a data generation module, a data control module, and a data summary module;

[0025] The data acquisition module is used to acquire the position parameters of each detection point of the lithium battery to be detected;

[0026] The data generation module is used to generate a scanning control parameter file corresponding to each detection point position parameter; wherein, the scanning control parameter file includes: a moving trajectory, first probe ultrasonic control parameters, and second probe ultrasonic control parameters;

[0027] The data control module is used to repeatedly execute the ultrasonic scanning operation until all the scanning control parameter files are executed and then stop; wherein, the ultrasonic scanning operation includes: selecting a scanning control parameter file as the selected scanning control parameter file from the scanning control parameter files that have not been subjected to the ultrasonic scanning operation, and controlling the mechanical motion control module to move the first probe and the second probe simultaneously to the detection point corresponding to the selected scanning control parameter file according to the moving trajectory corresponding to the selected scanning control parameter file; when the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, controlling the first transmitting circuit and the first receiving circuit to be respectively connected to the first probe, and controlling the second receiving circuit and the second probe to be connected, and controlling the first transmitting circuit to operate according to the first probe ultrasonic control parameters corresponding to the selected scanning control parameter file to obtain first ultrasonic data; and after the first probe ultrasonic control parameters corresponding to the selected scanning control parameter file are executed, controlling the first receiving circuit and the first probe to be connected, and controlling the second transmitting circuit and the second receiving circuit to be respectively connected to the second probe, and controlling the second transmitting circuit to operate according to the second probe ultrasonic control parameters corresponding to the selected scanning control parameter file to obtain second ultrasonic data; the first ultrasonic data includes: first reflection signal data received by the first probe, and first transmission signal data received by the second probe; the second ultrasonic data includes: second reflection signal data received by the second probe, and second transmission signal data received by the first probe;

[0028] The data summary module is used to summarize the first ultrasonic data and the second ultrasonic data of each detection point to obtain the structural ultrasonic data of the lithium battery to be detected.

[0029] As an improvement to the above solution, the ultrasonic scanning device further includes: a first switch circuit and a second switch circuit; the first switch circuit is used to control the connection of the first probe to the first transmitting circuit or the first receiving circuit, and the second switch circuit is used to control the connection of the second probe to the second transmitting circuit or the second receiving circuit;

[0030] The first probe is connected to the first switch circuit, and the first switch circuit is respectively connected to the first transmitting circuit and the first receiving circuit; the second probe is connected to the second switch circuit, and the second switch circuit is respectively connected to the second transmitting circuit and the second receiving circuit; the mechanical motion control module is respectively connected to the first probe and the second probe.

[0031] As an improvement to the above solution, the data generation module includes: a moving trajectory unit, a detection area unit, a scanning parameter unit, and a summarization unit;

[0032] The moving trajectory unit is used to generate a moving trajectory corresponding to each detection point position parameter according to the position parameters of every two detection points;

[0033] The detection area unit is used to calculate the unit detection area according to the number of detection point position parameters and the area of the lithium battery to be detected;

[0034] The scanning parameter unit is used to obtain the first probe ultrasonic control parameter and the second probe ultrasonic control parameter corresponding to each detection point position parameter according to the unit detection area; wherein, the first probe ultrasonic control parameter includes: the first probe ultrasonic emission signal frequency and the first probe ultrasonic emission signal duration; the second probe ultrasonic control parameter includes: the second probe ultrasonic emission signal frequency and the second probe ultrasonic emission signal duration;

[0035] The summarization unit is used to generate a scanning control parameter file corresponding to each detection point position parameter according to the moving trajectory, the scanning parameters, and the first probe emission duration.

[0036] As an improvement to the above solution, when the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, controlling the first transmitting circuit and the first receiving circuit to be respectively connected to the first probe, and controlling the second receiving circuit and the second probe to be connected, includes:

[0037] When the first probe and the second probe reach the detection points corresponding to the selected scan control parameter file, a first control signal is generated, so that the first switch circuit controls the first probe to be connected to the first transmitting circuit and the first receiving circuit respectively according to the first control signal, and the second switch circuit controls the second probe to be connected to the second receiving circuit according to the first control signal.

[0038] As an improvement of the above solution, after the ultrasonic control parameters of the first probe corresponding to the selected scan control parameter file are executed, controlling the connection between the first receiving circuit and the first probe, and controlling the second transmitting circuit and the second receiving circuit to be connected to the second probe respectively, includes:

[0039] After the ultrasonic control parameters of the first probe corresponding to the selected scan control parameter file are executed, a second control signal is generated, so that the first switch circuit controls the first probe to be connected to the first receiving circuit according to the second control signal, and the second switch circuit controls the second probe to be connected to the second transmitting circuit and the second receiving circuit respectively according to the second control signal.

[0040] Correspondingly, an embodiment of the present invention further provides a control system for ultrasonic scanning of a lithium battery, including: a control device for ultrasonic scanning of a lithium battery, an ultrasonic scanning device, and a lithium battery to be detected; wherein, the control device for ultrasonic scanning of the lithium battery applies the control method for ultrasonic scanning of a lithium battery as described in the present invention; the control device for ultrasonic scanning of the lithium battery is connected to the ultrasonic scanning device, and the ultrasonic scanning device is connected to the lithium battery to be detected.

[0041] Correspondingly, an embodiment of the present invention further provides a computer terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements a control method for ultrasonic scanning of a lithium battery as described in the present invention.

[0042] Correspondingly, an embodiment of the present invention further provides a computer-readable storage medium, the computer-readable storage medium includes a stored computer program, wherein when the computer program runs, it controls the device where the computer-readable storage medium is located to execute a control method for ultrasonic scanning of a lithium battery as described in the present invention.

[0043] As can be seen from the above, the present invention has the following beneficial effects:

[0044] The present invention provides a control method for ultrasonic scanning of a lithium battery. By obtaining the position parameters of each detection point of the lithium battery to be detected and generating a scanning control parameter file corresponding to each detection point position parameter, through performing an ultrasonic scanning operation, a selected scanning control parameter file is selected from the scanning control parameter files. Based on the selected scanning control parameter file, the mechanical motion control module is controlled to move the first probe and the second probe along a moving trajectory. After reaching the detection point corresponding to the selected scanning control parameter file, first, the first probe is controlled to be connected to the first transmitting circuit and the first receiving circuit respectively. The first probe emits and receives ultrasonic signals. The second receiving circuit is controlled to be connected to the second probe, and the second probe receives ultrasonic signals. And the first transmitting circuit is controlled to operate according to the first probe ultrasonic control signal of the selected scanning control parameter file to obtain a first ultrasonic signal. After the execution of the first probe ultrasonic control signal is completed, the first probe is controlled to be connected to the first receiving circuit, and the first probe receives ultrasonic signals. The second probe is controlled to be connected to the second transmitting circuit and the second receiving circuit respectively. The second probe emits and receives ultrasonic signals. And the second transmitting circuit and the first receiving circuit are controlled to operate according to the second probe ultrasonic control signal of the selected scanning control parameter file to obtain a second ultrasonic signal. By controlling the first ultrasonic signal and the second ultrasonic signal to collect the structural information of the lithium battery to be detected in two directions, it is possible to avoid the artifacts generated during single-sided detection, and improve the accuracy of ultrasonic detection and scanning of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic flowchart of a control method for ultrasonic scanning of a lithium battery provided by an embodiment of the present invention;

[0046] Figure 2 is a schematic structural diagram of a control device for ultrasonic scanning of a lithium battery provided by an embodiment of the present invention;

[0047] Figure 3 is a schematic structural diagram of a control system for ultrasonic scanning of a lithium battery provided by an embodiment of the present invention;

[0048] Figure 4 is a schematic diagram of the working principle of the first probe and the second probe provided by an embodiment of the present invention;

[0049] Figure 5 is a schematic structural diagram of a switching circuit provided by an embodiment of the present invention;

[0050] Figure 6 is a schematic flowchart of a control method for a switching circuit provided by an embodiment of the present invention;

[0051] Figure 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] Embodiment 1

[0054] Refer to Figure 1 , Figure 1 which is a schematic flowchart of a control method for ultrasonic scanning of a lithium battery provided by an embodiment of the present invention. As Figure 1 shown, this embodiment includes steps 101 to 104, and the specific steps are as follows:

[0055] Control an ultrasonic scanning device; the ultrasonic scanning device includes: a mechanical motion control module, a first probe, a first transmitting circuit, a first receiving circuit, a second probe, a second transmitting circuit, and a second receiving circuit; wherein, the first probe and the second probe are arranged on both sides of the lithium battery to be detected, and the center of the surface of the first probe is aligned with the center of the surface of the second probe on a straight line;

[0056] In this embodiment, the ultrasonic scanning device further includes: a first switch circuit and a second switch circuit; the first switch circuit is used to control the connection between the first probe and the first transmitting circuit or the first receiving circuit, and the second switch circuit is used to control the connection between the second probe and the second transmitting circuit or the second receiving circuit;

[0057] The first probe is connected to the first switch circuit, and the first switch circuit is respectively connected to the first transmitting circuit and the first receiving circuit; the second probe is connected to the second switch circuit, and the second switch circuit is respectively connected to the second transmitting circuit and the second receiving circuit; the mechanical motion control module is respectively connected to the first probe and the second probe.

[0058] In a specific embodiment, the mechanical motion control module is a robotic arm.

[0059] Step 101: Obtain the position parameters of each detection point of the lithium battery to be detected.

[0060] In a specific embodiment, by the user setting the initial position of the detection points of the lithium battery to be detected according to the size of the lithium battery to be detected, the system automatically generates the position parameters of each detection point according to the battery size and the probe moving distance, and sends them to the device that executes the control method for ultrasonic scanning of the lithium battery.

[0061] Step 102: Generate a scanning control parameter file corresponding to the position parameter of each detection point; wherein, the scanning control parameter file includes: a moving trajectory, first probe ultrasonic control parameters, and second probe ultrasonic control parameters.

[0062] In this embodiment, the generating of the scanning control parameter file corresponding to the position parameter of each detection point includes:

[0063] Generate a moving trajectory corresponding to the position parameter of each detection point according to every two detection point position parameters;

[0064] Calculate the unit detection area according to the number of detection point position parameters and the area of the lithium battery to be detected;

[0065] Obtain the first probe ultrasonic control parameters and the second probe ultrasonic control parameters corresponding to the position parameter of each detection point according to the unit detection area; wherein, the first probe ultrasonic control parameters include: the first probe ultrasonic emission signal frequency and the first probe ultrasonic emission signal duration; the second probe ultrasonic control parameters include: the second probe ultrasonic emission signal frequency and the second probe ultrasonic emission signal duration;

[0066] Generate a scanning control parameter file corresponding to the position parameter of each detection point according to the moving trajectory, the first probe ultrasonic control parameters, and the second probe ultrasonic control parameters.

[0067] In a specific embodiment, after obtaining the position parameters of each detection point, first generate a moving trajectory based on the detection point position parameters to drive the operation of the mechanical motion control module, then divide the battery to be detected into several regions according to the position parameters, calculate the unit detection area of each region, so as to determine the scanning parameters between the transmitting circuit and the receiving circuit based on the unit detection area, ensure that the ultrasonic scanning range is comprehensive during each movement and will not cause energy loss, and finally determine the time for completing one scan according to the scanning parameters, and then determine the emission duration of the first probe, so as to ensure that the ultrasonic scan on one side has been completed when switching the circuits connected to the two probes, and ensure that the first ultrasonic data and the second ultrasonic data of each detection point include the complete unit detection area ultrasonic data of the battery to be detected.

[0068] Step 103: Repeat the ultrasonic scanning operation until all the scanning control parameter files are executed and then stop; wherein, the ultrasonic scanning operation includes: selecting a scanning control parameter file as the selected scanning control parameter file from the scanning control parameter files that have not been subjected to the ultrasonic scanning operation, and controlling the mechanical motion control module to simultaneously move the first probe and the second probe to the detection point corresponding to the selected scanning control parameter file according to the movement trajectory corresponding to the selected scanning control parameter file; when the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, controlling the first transmitting circuit and the first receiving circuit to be respectively connected to the first probe, and controlling the second receiving circuit and the second probe to be connected, and controlling the first transmitting circuit to operate according to the first probe ultrasonic control parameter corresponding to the selected scanning control parameter file to obtain first ultrasonic data; and after the first probe ultrasonic control parameter corresponding to the selected scanning control parameter file is executed, controlling the first receiving circuit and the first probe to be connected, and controlling the second transmitting circuit and the second receiving circuit to be respectively connected to the second probe, and controlling the second transmitting circuit to operate according to the second probe ultrasonic control parameter corresponding to the selected scanning control parameter file to obtain second ultrasonic data; the first ultrasonic data includes: first reflection signal data received by the first probe, and first transmission signal data received by the second probe; the second ultrasonic data includes: second reflection signal data received by the second probe, and second transmission signal data received by the first probe.

[0069] In this embodiment, when the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, controlling the first transmitting circuit and the first receiving circuit to be respectively connected to the first probe, and controlling the second receiving circuit and the second probe to be connected, includes:

[0070] When the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, generating a first control signal, so that the first switch circuit controls the first probe to be respectively connected to the first transmitting circuit and the first receiving circuit according to the first control signal, and the second switch circuit controls the second probe to be connected to the second receiving circuit according to the first control signal.

[0071] In a specific embodiment, the first probe is connected to one or more of the following circuits through the first switch circuit: the first transmitting circuit, the first receiving circuit; the second probe is connected to one or more of the following circuits through the second switch circuit: the second transmitting circuit, the second receiving circuit.

[0072] In this embodiment, after the first probe ultrasonic control parameter corresponding to the selected scanning control parameter file is executed, controlling the first receiving circuit and the first probe to be connected, and controlling the second transmitting circuit and the second receiving circuit to be respectively connected to the second probe, includes:

[0073] After the ultrasonic control parameters of the first probe corresponding to the selected scan control parameter file are executed, a second control signal is generated, so that the first switch circuit controls the connection between the first probe and the first receiving circuit according to the second control signal, and the second switch circuit controls the connection between the second probe and the second transmitting circuit and the second receiving circuit respectively according to the second control signal.

[0074] In a specific embodiment, when the mechanical motion control module sets this pair of probes to a certain position of the lithium battery to be detected, one side of the probe emits a signal and receives the reflected signal data, and the other side of the probe receives the transmitted signal data. At the end of this pulse repetition period, the two probes switch between transmitting and receiving, that is, the original transmitting end switches to connect to the receiving circuit, and the original receiving end switches to connect to the transmitting circuit; without changing the position of this pair of probes, the current transmitting end emits a signal and receives the reflected signal data, and the other side of the probe receives the transmitted signal data. This process is as Figure 4 shown in the figure. In the figure, the first transmitting probe is the combined structure of the first probe, the first transmitting circuit and the first receiving circuit, and the first receiving probe is the combined structure of the second probe and the second receiving circuit; the second receiving probe is the combined structure of the first probe and the first receiving circuit, and the second transmitting probe is the combined structure of the second probe, the second transmitting circuit and the second receiving circuit.

[0075] After completing the scanning of this point position, and repeating all positions according to the calculated emission duration of the first probe, a two-sided two-dimensional scan is formed, and two corresponding sets of two-dimensional transmission data and three-dimensional data of the space are obtained for processing, analysis and display.

[0076] The specific switching method of transmitting and receiving is as Figure 5 , because each probe (or element) has a transmitting and receiving circuit, only a switch circuit needs to be added to select which circuit this probe (or element) is connected to, and the selection signal will be given by the device that executes the control method for ultrasonic scanning of the lithium battery described in the present invention. Such a switch circuit can be some commercial switch chips:

[0077] When the control signal SEL == true (i.e., the first control signal described in the present invention), Probe1 is connected to transmit, responsible for transmitting the signal and receiving the reflected signal data at the same time; while Probe2 is connected to receive and only responsible for receiving the transmitted signal data; when the control signal SEL == false (i.e., the second control signal described in the present invention), Probe1 is connected to receive and only responsible for receiving the transmitted signal data, and Probe2 is connected to transmit and is responsible for transmitting the signal and receiving the reflected signal data at the same time. Thus, a two-way scan is achieved.

[0078] The specific process is asFigure 6 , when the system starts, SEL == true is default. Probe1 transmits and probe2 receives. When the delay tau (i.e., the transmission duration of the first probe in the present invention) accumulates to a certain time, SEL automatically switches. At that time, probe1 is connected to receive and probe2 is connected to transmit.

[0079] In a specific embodiment, the transmission duration of the first probe can also be directly set manually: Assume the distance between the two probes is 100 mm, and the average propagation speed of ultrasonic waves in the liquid medium and the battery is 2.0 mm / μs. Since the system not only needs to receive the transmitted signal data, but the transmitting end also needs to receive the reflected signal data, tau0 can be set to 100 μs. If the robotic arm steps 0.5 mm, as long as the movement speed of the robotic arm is lower than 0.5 / 200 = 0.0025 mm / μs = 2.5 m / s, it can meet the probe switching time. When the robotic arm scans the entire preset area, the system stops working and the parameters return to the original default values.

[0080] Step 104: Summarize the first ultrasonic data and the second ultrasonic data of each detection point to obtain the ultrasonic data of the structure of the to-be-detected lithium battery.

[0081] In a specific embodiment, it further includes: switching the connection circuits of the two probes after scanning multiple points, or even after scanning the entire area.

[0082] In a specific embodiment, the first probe and the second probe can adopt a single-element probe, or a multi-element annular array probe, or a one-dimensional arranged array probe, or a planar array probe, or a cMUT single-element, or a multi-element array probe.

[0083] See Figure 2 , Figure 2 is a schematic structural diagram of a control device for ultrasonic scanning of a lithium battery provided by an embodiment of the present invention, which controls an ultrasonic scanning device; the ultrasonic scanning device includes: a mechanical motion control module, a first probe, a first transmitting circuit, a first receiving circuit, a second probe, a second transmitting circuit, and a second receiving circuit; wherein, the first probe and the second probe are arranged on both sides of the to-be-detected lithium battery, and the center of the surface of the first probe and the center of the surface of the second probe are aligned on a straight line;

[0084] The control device includes: a data acquisition module 201, a data generation module 202, a data control module 203, and a data summarization module 204;

[0085] The data acquisition module is used to acquire the position parameters of each detection point of the to-be-detected lithium battery;

[0086] The data generation module is configured to generate a scan control parameter file corresponding to the position parameter of each detection point; wherein, the scan control parameter file includes: a movement trajectory, first probe ultrasonic control parameters, and second probe ultrasonic control parameters;

[0087] The data control module is configured to repeatedly execute the ultrasonic scan operation until all scan control parameter files are executed and then stop; wherein, the ultrasonic scan operation includes: selecting a scan control parameter file as the selected scan control parameter file from the scan control parameter files that have not been subjected to the ultrasonic scan operation, and controlling the mechanical motion control module to simultaneously move the first probe and the second probe to the detection point corresponding to the selected scan control parameter file according to the movement trajectory corresponding to the selected scan control parameter file; when the first probe and the second probe reach the detection point corresponding to the selected scan control parameter file, controlling the first transmitting circuit and the first receiving circuit to be respectively connected to the first probe, and controlling the second receiving circuit and the second probe to be connected, and controlling the first transmitting circuit to operate according to the first probe ultrasonic control signal corresponding to the selected scan control parameter file to obtain first ultrasonic data; and after the first probe ultrasonic control signal corresponding to the selected scan control parameter file is executed, controlling the first receiving circuit and the first probe to be connected, and controlling the second transmitting circuit and the second receiving circuit to be respectively connected to the second probe, and controlling the second transmitting circuit to operate according to the second probe ultrasonic control parameters corresponding to the selected scan control parameter file to obtain second ultrasonic data; the first ultrasonic data includes: first reflected signal data received by the first probe, and first transmitted signal data received by the second probe; the second ultrasonic data includes: second reflected signal data received by the second probe, and second transmitted signal data received by the first probe;

[0088] The data summarization module is configured to summarize the first ultrasonic data and the second ultrasonic data of each detection point to obtain the ultrasonic data of the structure of the lithium battery to be detected.

[0089] As an improvement of the above solution, the ultrasonic scan device further includes: a first switch circuit and a second switch circuit; the first switch circuit is used to control the connection between the first probe and the first transmitting circuit or the first receiving circuit, and the second switch circuit is used to control the connection between the second probe and the second transmitting circuit or the second receiving circuit;

[0090] The first probe is connected to the first switch circuit, and the first switch circuit is respectively connected to the first transmitting circuit and the first receiving circuit; the second probe is connected to the second switch circuit, and the second switch circuit is respectively connected to the second transmitting circuit and the second receiving circuit; the mechanical motion control module is respectively connected to the first probe and the second probe.

[0091] As an improvement to the above solution, the data generation module includes: a moving trajectory unit, a detection area unit, a scanning parameter unit, and a summarization unit;

[0092] The moving trajectory unit is used to generate a moving trajectory corresponding to each detection point position parameter according to the position parameters of every two detection points;

[0093] The detection area unit is used to calculate the unit detection area according to the number of detection point position parameters and the area of the lithium battery to be detected;

[0094] The scanning parameter unit is used to obtain the first probe ultrasonic control parameter and the second probe ultrasonic control parameter corresponding to each detection point position parameter according to the unit detection area; wherein, the first probe ultrasonic control parameter includes: the first probe ultrasonic emission signal frequency and the first probe ultrasonic emission signal duration; the second probe ultrasonic control parameter includes: the second probe ultrasonic emission signal frequency and the second probe ultrasonic emission signal duration;

[0095] The summarization unit is used to generate a scanning control parameter file corresponding to each detection point position parameter according to the moving trajectory, the scanning parameters, and the first probe emission duration.

[0096] As an improvement to the above solution, when the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, controlling the first emission circuit and the first receiving circuit to be respectively connected to the first probe, and controlling the second receiving circuit and the second probe to be connected, includes:

[0097] When the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, generate a first control signal, so that the first switch circuit controls the first probe to be respectively connected to the first emission circuit and the first receiving circuit according to the first control signal, and the second switch circuit controls the second probe to be connected to the second receiving circuit according to the first control signal.

[0098] As an improvement to the above solution, after the first probe ultrasonic control parameter corresponding to the selected scanning control parameter file is executed, controlling the first receiving circuit and the first probe to be connected, and controlling the second emission circuit and the second receiving circuit to be respectively connected to the second probe, includes:

[0099] After the first probe ultrasonic control parameter corresponding to the selected scanning control parameter file is executed, generate a second control signal, so that the first switch circuit controls the first probe to be connected to the first receiving circuit according to the second control signal, and the second switch circuit controls the second probe to be respectively connected to the second emission circuit and the second receiving circuit according to the second control signal.

[0100] See Figure 3 , an embodiment of the present invention further provides a control system for ultrasonic scanning of a lithium battery, including: a control device 301 for ultrasonic scanning of a lithium battery, an ultrasonic scanning device 302, and a lithium battery 303 to be detected; wherein, the control device for ultrasonic scanning of the lithium battery applies the control method for ultrasonic scanning of the lithium battery as described in the present invention; the control device for ultrasonic scanning of the lithium battery is connected to the ultrasonic scanning device, and the ultrasonic scanning device is connected to the lithium battery to be detected.

[0101] In this embodiment, the ultrasonic scanning device includes: a mechanical motion control module 3021, a first probe 3022, a first transmitting circuit 3023, a first receiving circuit 3024, a second probe 3025, a second transmitting circuit 3026, and a second receiving circuit 3027; wherein, the first probe and the second probe are arranged on both sides of the lithium battery to be detected, and the center of the surface of the first probe is aligned with the center of the surface of the second probe on a straight line;

[0102] In this embodiment, the ultrasonic scanning device further includes: a first switch circuit 3028 and a second switch circuit 3029; the first switch circuit is used to control the connection between the first probe and the first transmitting circuit or the first receiving circuit, and the second switch circuit is used to control the connection between the second probe and the second transmitting circuit or the second receiving circuit.

[0103] In a specific embodiment, the user can set ultrasonic emission parameters and mechanical motion parameters through a software UI interface, and the software sends each parameter to the control device for ultrasonic scanning of the lithium battery. The control device for ultrasonic scanning of the lithium battery directly controls each module. The first probe and the second probe are fixed at the end of the robotic arm and placed on both sides of the detected object (lithium battery), and move together with the robotic arm. At a certain moment, one side of the probe is used as the transmitting end, and the other side of the probe is used as the receiving end for transmitting signals.

[0104] In this embodiment, by obtaining the position parameters of each detection point of the lithium battery to be detected and generating a scanning control parameter file corresponding to each position parameter of the detection point, and by performing an ultrasonic scanning operation, a selected scanning control parameter file is selected from the scanning control parameter files. Based on the selected scanning control parameter file, the mechanical motion control module is controlled to move the first probe and the second probe along a moving trajectory. After reaching the detection point corresponding to the selected scanning control parameter file, first, the first probe is controlled to be connected to the first transmitting circuit and the first receiving circuit respectively. The first probe emits and receives ultrasonic signals. The second receiving circuit is controlled to be connected to the second probe, and the second probe receives ultrasonic signals. And the first transmitting circuit is controlled to operate according to the ultrasonic control parameters of the first probe in the selected scanning control parameter file to obtain first ultrasonic data. After the ultrasonic control parameters of the first probe are executed, the first probe is controlled to be connected to the first receiving circuit, and the first probe receives ultrasonic signals. The second probe is controlled to be connected to the second transmitting circuit and the second receiving circuit respectively. The second probe emits and receives ultrasonic signals. And the second transmitting circuit and the first receiving circuit are controlled to operate according to the ultrasonic control parameters of the second probe in the selected scanning control parameter file to obtain second ultrasonic data. In this embodiment, the lithium battery to be detected is scanned from two directions, which can more accurately reflect the internal characteristics of the battery on both sides and can also be calibrated to improve the accuracy of detection.

[0105] Embodiment 2

[0106] See Figure 7 , Figure 7 which is a schematic structural diagram of a terminal device provided by an embodiment of the present invention.

[0107] A terminal device in this embodiment includes: a processor 701, a memory 702, and a computer program stored in the memory 702 and executable on the processor 701. When the processor 701 executes the computer program, it implements the steps in the embodiments of the above control method for ultrasonic scanning of each lithium battery, such as Figure 1 all the steps of the control method for ultrasonic scanning of the lithium battery shown. Or, when the processor executes the computer program, it implements the functions of each module in the above device embodiments, such as: Figure 2 all the modules of the control device for ultrasonic scanning of the lithium battery shown.

[0108] In addition, an embodiment of the present invention further provides a computer-readable storage medium, which includes a stored computer program. When the computer program runs, it controls the device where the computer-readable storage medium is located to execute the control method for ultrasonic scanning of the lithium battery as described in any one of the above embodiments.

[0109] Those skilled in the art can understand that the schematic diagram is only an example of the terminal device and does not constitute a limitation on the terminal device. It may include more or fewer components than shown in the figure, or combine some components, or different components. For example, the terminal device may also include input / output devices, network access devices, buses, etc.

[0110] The so-called processor 701 may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The processor 701 is the control center of the terminal device, connecting various parts of the entire terminal device through various interfaces and lines.

[0111] The memory 702 can be used to store the computer program and / or module. The processor 701 realizes various functions of the terminal device by running or executing the computer program and / or module stored in the memory, and by calling the data stored in the memory 702. The memory 702 may mainly include a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, phone book, etc.), etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0112] Among them, if the modules / units integrated in the terminal device are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, to implement all or part of the processes in the above-described embodiment methods of the present invention, it can also be completed by a computer program instructing relevant hardware. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal, and software distribution medium, etc.

[0113] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the attached drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that they have a communication connection, which can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0114] The above is the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A control method for ultrasonic scanning of a lithium battery, characterized in that: Controlling an ultrasonic scanning device; the ultrasonic scanning device comprising: a mechanical motion control module, a first probe, a first transmitting circuit, a first receiving circuit, a second probe, a second transmitting circuit, and a second receiving circuit; wherein the first probe and the second probe are disposed on opposite sides of a lithium battery to be inspected, and the surface center of the first probe and the surface center of the second probe are aligned in a straight line; The control method includes: Obtain the position parameters of each test point of the lithium battery to be tested; Generate a scanning control parameter file corresponding to each detection point position parameter; wherein the scanning control parameter file includes: a moving trajectory, a first probe ultrasonic control parameter, and a second probe ultrasonic control parameter; wherein, generating a scanning control parameter file corresponding to each detection point position parameter includes: generating a moving trajectory corresponding to each detection point position parameter according to every two detection point position parameters; calculating a unit detection area according to the number of detection point position parameters and the area of the lithium battery to be detected; obtaining the first probe ultrasonic control parameter and the second probe ultrasonic control parameter corresponding to each detection point position parameter according to the unit detection area; wherein, the first probe ultrasonic control parameter includes: a first probe ultrasonic transmission signal frequency and a first probe ultrasonic transmission signal duration; the second probe ultrasonic control parameter includes: a second probe ultrasonic transmission signal frequency and a second probe ultrasonic transmission signal duration; generate a scanning control parameter file corresponding to each detection point position parameter according to the moving trajectory, the first probe ultrasonic control parameter, and the second probe ultrasonic control parameter; Repeat the ultrasonic scanning operation until all scanning control parameter files are executed and then stop; wherein, the ultrasonic scanning operation includes: selecting a scanning control parameter file as the selected scanning control parameter file from each scanning control parameter file in which the ultrasonic scanning operation is not performed, controlling the mechanical motion control module to simultaneously move the first probe and the second probe to the detection point corresponding to the selected scanning control parameter file according to the movement trajectory corresponding to the selected scanning control parameter file; when the first probe and the second probe arrive at the detection point corresponding to the selected scanning control parameter file, controlling the first transmitting circuit and the first receiving circuit to be connected to the first probe respectively, and controlling the second receiving circuit to be connected to the second probe, and controlling the first transmitting circuit and the first receiving circuit to be connected to the second probe, and controlling the second transmitting circuit and the second receiving circuit to be connected to the second probe, and controlling the first transmitting circuit and the first receiving circuit to be connected to the first transmitting circuit and the second receiving circuit, and controlling the first transmitting circuit and the second ... A transmitting circuit operates according to the first probe ultrasonic control parameters corresponding to the selected scan control parameter file to obtain first ultrasonic data; and after the first probe ultrasonic control parameters corresponding to the selected scan control parameter file are executed, the first receiving circuit is controlled to connect to the first probe, and the second transmitting circuit and the second receiving circuit are controlled to connect to the second probe respectively, and the second transmitting circuit is controlled to operate according to the second probe ultrasonic control parameters corresponding to the selected scan control parameter file to obtain second ultrasonic data; the first ultrasonic data includes: first reflected signal data received by the first probe, and first transmitted signal data received by the second probe; the second ultrasonic data includes: second reflected signal data received by the second probe, and second transmitted signal data received by the first probe; When the mechanical motion control module moves the first and second probes to a corresponding detection point, the first probe transmits a signal and receives reflected signal data, while the second probe receives transmitted signal data. After this pulse repetition period ends, the first and second probes switch between transmitting and receiving. While the positions of the first and second probes remain unchanged, the second probe transmits a signal and receives reflected signal data, while the first probe receives transmitted signal data. After completing the scan of this detection point, the scan is repeated for all detection points according to the calculated transmission time of the first probe, thereby forming a bilateral two-dimensional scan. The first ultrasonic data and the second ultrasonic data of each detection point are summarized to obtain the structural ultrasonic data of the lithium battery to be detected.

2. The control method for lithium battery ultrasonic scanning according to claim 1, characterized in that: The ultrasonic scanning device further includes: a first switching circuit and a second switching circuit; the first switching circuit is used to control the first probe to be connected to the first transmitting circuit or the first receiving circuit, and the second switching circuit is used to control the second probe to be connected to the second transmitting circuit or the second receiving circuit; The first probe is connected to the first switching circuit, which is respectively connected to the first transmitting circuit and the first receiving circuit; the second probe is connected to the second switching circuit, which is respectively connected to the second transmitting circuit and the second receiving circuit; the mechanical motion control module is respectively connected to the first probe and the second probe.

3. The control method for lithium battery ultrasonic scanning according to claim 2, characterized in that: When the first probe and the second probe arrive at the detection point corresponding to the selected scanning control parameter file, controlling the first transmitting circuit and the first receiving circuit to connect to the first probe respectively, and controlling the second receiving circuit to connect to the second probe, comprises: When the first probe and the second probe reach the detection point corresponding to the selected scanning control parameter file, a first control signal is generated so that the first switching circuit controls the first probe to connect to the first transmitting circuit and the first receiving circuit respectively according to the first control signal, and the second switching circuit controls the second probe to connect to the second receiving circuit according to the first control signal.

4. The control method for lithium battery ultrasonic scanning according to claim 3, characterized in that: After the execution of the first probe ultrasound control parameter corresponding to the selected scanning control parameter file is completed, controlling the first receiving circuit to be connected to the first probe, and controlling the second transmitting circuit and the second receiving circuit to be connected to the second probe respectively, includes: After the first probe ultrasound control parameter corresponding to the selected scanning control parameter file is executed, a second control signal is generated so that the first switching circuit controls the first probe to be connected to the first receiving circuit according to the second control signal, and the second switching circuit controls the second probe to be connected to the second transmitting circuit and the second receiving circuit respectively according to the second control signal.

5. A control device for ultrasonic scanning of lithium batteries, characterized in that: Controlling an ultrasonic scanning device; the ultrasonic scanning device comprising: a mechanical motion control module, a first probe, a first transmitting circuit, a first receiving circuit, a second probe, a second transmitting circuit, and a second receiving circuit; wherein the first probe and the second probe are disposed on opposite sides of a lithium battery to be inspected, and the surface center of the first probe and the surface center of the second probe are aligned in a straight line; The control device includes: a data acquisition module, a data generation module, a data control module and a data aggregation module; The data acquisition module is used to obtain the position parameters of each detection point of the lithium battery to be detected; The data generation module is used to generate a scanning control parameter file corresponding to each detection point position parameter; wherein the scanning control parameter file includes: a movement trajectory, a first probe ultrasonic control parameter, and a second probe ultrasonic control parameter; wherein the generating of the scanning control parameter file corresponding to each detection point position parameter includes: generating a movement trajectory corresponding to each detection point position parameter according to every two detection point position parameters; calculating a unit detection area according to the number of detection point position parameters and the area of the lithium battery to be detected; obtaining the first probe ultrasonic control parameter and the second probe ultrasonic control parameter corresponding to each detection point position parameter according to the unit detection area; wherein the first probe ultrasonic control parameter includes: a first probe ultrasonic transmission signal frequency and a first probe ultrasonic transmission signal duration; the second probe ultrasonic control parameter includes: a second probe ultrasonic transmission signal frequency and a second probe ultrasonic transmission signal duration; generating a scanning control parameter file corresponding to each detection point position parameter according to the movement trajectory, the first probe ultrasonic control parameter, and the second probe ultrasonic control parameter; The data control module is used to repeatedly perform the ultrasonic scanning operation until all the scanning control parameter files are executed and then stop; wherein, the ultrasonic scanning operation includes: selecting a scanning control parameter file as the selected scanning control parameter file from the scanning control parameter files that have not performed the ultrasonic scanning operation, controlling the mechanical motion control module to simultaneously move the first probe and the second probe to the detection point corresponding to the selected scanning control parameter file according to the movement trajectory corresponding to the selected scanning control parameter file; when the first probe and the second probe arrive at the detection point corresponding to the selected scanning control parameter file, controlling the first transmitting circuit and the first receiving circuit to connect to the first probe respectively, and controlling the second receiving circuit to connect to the second probe , and controls the first transmitting circuit to operate according to the first probe ultrasonic control parameters corresponding to the selected scan control parameter file to obtain first ultrasonic data; and after the first probe ultrasonic control parameters corresponding to the selected scan control parameter file are executed, controls the first receiving circuit to be connected to the first probe, and controls the second transmitting circuit and the second receiving circuit to be connected to the second probe respectively, and controls the second transmitting circuit to operate according to the second probe ultrasonic control parameters corresponding to the selected scan control parameter file to obtain second ultrasonic data; the first ultrasonic data includes: first reflected signal data received by the first probe, and first transmitted signal data received by the second probe; the second ultrasonic data includes: second reflected signal data received by the second probe, and second transmitted signal data received by the first probe; The data summarizing module is used to summarize the first ultrasonic data and the second ultrasonic data of each detection point to obtain the structural ultrasonic data of the lithium battery to be detected.

6. A lithium battery ultrasonic scanning control system, characterized in that: include: A control device for ultrasonic scanning of a lithium battery, an ultrasonic scanning device, and a lithium battery to be detected; wherein, the control device for ultrasonic scanning of a lithium battery applies the control method for ultrasonic scanning of a lithium battery as described in any one of claims 1 to 4; the control device for ultrasonic scanning of a lithium battery is connected to the ultrasonic scanning device, and the ultrasonic scanning device is connected to the lithium battery to be detected.

7. A computer terminal device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the method for controlling ultrasonic scanning of a lithium battery according to any one of claims 1 to 4 is implemented.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the control method for ultrasonic scanning of a lithium battery according to any one of claims 1 to 4.

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