WO2020010624A1 - Battery testing method and system, and battery analysis device - Google Patents

Battery testing method and system, and battery analysis device Download PDF

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Publication number
WO2020010624A1
WO2020010624A1 PCT/CN2018/095671 CN2018095671W WO2020010624A1 WO 2020010624 A1 WO2020010624 A1 WO 2020010624A1 CN 2018095671 W CN2018095671 W CN 2018095671W WO 2020010624 A1 WO2020010624 A1 WO 2020010624A1
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WIPO (PCT)
Prior art keywords
battery
magnetic susceptibility
susceptibility distribution
distribution information
tested
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PCT/CN2018/095671
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French (fr)
Chinese (zh)
Inventor
张艳辉
冯伟
张晨宁
尹铎
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深圳先进技术研究院
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Priority to PCT/CN2018/095671 priority Critical patent/WO2020010624A1/en
Publication of WO2020010624A1 publication Critical patent/WO2020010624A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/44—Testing lamps
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux

Definitions

  • the present application relates to the field of battery detection, and in particular, to a battery detection method, system, and battery analysis device.
  • the technical problem mainly solved by this application is to provide a battery detection method, system and battery analysis device, which can realize non-destructive detection of a battery.
  • a technical solution adopted in the present application is to provide a battery detection method, where the method includes:
  • the test magnetic susceptibility distribution information is analyzed to obtain a test result of the battery to be tested, wherein the test result includes a state of charge and / or a physical defect.
  • the analysis device includes: a memory and a processor, the memory is used to store program data, and the processor is used to run The program data is described to perform the method described above.
  • a battery detection system which includes a battery detection device and a battery analysis device connected to the battery detection device;
  • the battery detection device is configured to detect the magnetic susceptibility of the battery to be detected to obtain test magnetic susceptibility distribution information, and output the information to the battery analysis device;
  • the battery analysis device is a battery analysis device as described above, and is configured to further analyze a detection result of the battery to be detected based on the test magnetic susceptibility distribution information output by the battery detection device.
  • the state of charge and / or physical defects of the battery to be tested can be obtained, so that Under the circumstances, the state of charge of the battery and / or the presence or absence of related physical defects are quickly and accurately detected, thereby realizing non-destructive testing of the battery.
  • FIG. 1 is a schematic flowchart of an embodiment of a battery detection method according to the present application.
  • FIG. 2 is a schematic flowchart of another embodiment of a battery detection method according to the present application.
  • FIG. 3 is a schematic flowchart of another embodiment of a battery detection method according to the present application.
  • FIG. 4 is a schematic flowchart of another embodiment of a battery detection method according to the present application.
  • FIG. 5 is a schematic flowchart of another embodiment of a battery detection method according to the present application.
  • FIG. 6 is a schematic diagram of a magnetic field distribution field map effect in a horizontal direction of a discharge process of a battery to be detected measured in an embodiment of a battery detection method according to the present application;
  • FIG. 7 is a schematic diagram of a magnetic field distribution field map effect in a vertical direction of a battery to be detected during a discharging process measured in an embodiment of a battery detection method according to the present application;
  • FIG. 8 is a schematic structural diagram of an embodiment of a battery analysis device according to the present application.
  • FIG. 9 is a schematic structural diagram of an embodiment of a battery detection system according to the present application.
  • FIG. 10 is a schematic structural diagram of an embodiment of a storage medium according to the present application.
  • a plurality is at least two, for example, two, three, etc., unless it is specifically and specifically defined otherwise.
  • the terms “including” and “having”, as well as any of them, are intended to cover non-exclusive inclusion.
  • a process, method, system, product, or device containing a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.
  • an embodiment herein means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. Those skilled in the art understand explicitly and implicitly that the embodiments described herein can be combined with other embodiments without contradiction.
  • FIG. 1 is a schematic flowchart of an embodiment of a battery detection method according to the present application. Specifically, it includes steps S110 to S120.
  • magnetic susceptibility is a physical quantity that characterizes the properties of a magnetic medium, and is a ratio of the magnetization intensity of a substance or a material (a substance or a material may be referred to as a magnetic medium) to the intensity of a magnetic field under the action of a magnetic field.
  • Magnetization means that a certain substance or material is placed in a magnetic field and will show certain characteristics of magnetism under the action of the magnetic field.
  • the magnetic susceptibility is material dependent, it is affected by the distribution of the battery's internal materials and the use of the battery. That is, during the redox reaction of the battery, the magnetic susceptibility will change. Therefore, by obtaining the magnetic susceptibility distribution information of the battery, it is possible to accurately understand the state of charge of the battery and whether there is a fault.
  • the battery to be tested described in this application is a battery to be tested or a battery to be tested, and the type of the battery to be tested is not limited herein.
  • the test magnetic susceptibility distribution information specifically refers to information that can reflect the magnetic susceptibility distribution of the battery to be detected, and specifically may be a magnetic susceptibility field distribution map, or a detailed magnetic susceptibility statistical chart.
  • the manner of obtaining the test magnetic susceptibility distribution information of the battery to be detected may specifically include: real-time acquisition through a battery detection device or indirect acquisition through communication with other equipment, and the battery detection device includes at least: a magnetic resonance device .
  • step S110 before obtaining the test magnetic susceptibility distribution information of the battery to be tested in step S110, charging of the battery to be tested is completed according to a preset charging rule and left to stand for a preset time to eliminate the slack effect; or Set a rule to complete the discharge of the battery to be tested and let it stand for a preset time to eliminate the relaxation effect.
  • the test magnetic susceptibility distribution information is detected after the battery to be tested is charged in accordance with a preset charging rule or discharged in accordance with a preset rule for a preset time, and is left to stand for a preset time.
  • the preset charging rule is a rule of the battery to be tested, which meets the requirements of the rated voltage and current of the battery to be tested, and the preset rule followed by the discharge is also based on the discharging rule of the battery to be tested.
  • the preset rest time is to eliminate the relaxation effect of the battery. The specific rest time is based on actual needs, and is not limited here.
  • S120 Analyze the test magnetic susceptibility distribution information to obtain the detection result of the battery to be detected.
  • test magnetic susceptibility distribution information of the battery to be tested is obtained, the obtained test magnetic susceptibility distribution information is further analyzed to obtain the test result of the battery to be tested.
  • the basic parameters of the battery to be tested will be further combined.
  • the referenced battery basic parameters include: battery specifications, battery brand, battery production time, and so on.
  • the test magnetic susceptibility distribution information includes: magnetic susceptibility distribution field map; the detection result includes a state of charge and / or a physical defect.
  • the state of charge of the battery refers to the current charge capacity of the battery, which refers to the ratio of the remaining capacity of the battery after a period of use or long-term unused to the capacity of its fully charged state, which is usually expressed in percentages; physical defects of the battery include : Electrode folding, missing electrode, presence of debris, etc., of course, it is not limited to this.
  • the test magnetic susceptibility distribution information of the battery to be tested is obtained, and the test magnetic susceptibility distribution information is further analyzed to obtain the state of charge and / or physical defects of the battery to be tested. Non-destructive testing of batteries to ensure battery quality.
  • step S120 further includes: comparing the test magnetic susceptibility distribution information with the reference magnetic susceptibility distribution information, and obtaining the detection result of the battery to be detected from the comparison result.
  • the reference magnetic susceptibility distribution information is stored in advance in the battery detection system, and is magnetic susceptibility distribution information obtained by detecting each parameter battery in each brand in advance. It should be noted that the reference magnetic susceptibility distribution information of each battery under a certain state of charge is obtained after a number of tests on a preset number of batteries, combined with a theoretical value and averaging. After the reference susceptibility distribution information is obtained, the reference susceptibility distribution information and the state of charge of the battery (in different embodiments, the state of charge further includes the amount of charge, whether the amount of charge is normal, etc.) and related parameters , Brand, year of production, etc., to be referenced when detecting and / or analyzing a battery with an unknown state of charge or unknown physical defect.
  • the battery detection system will store batteries with different parameters for each brand under different loads.
  • the magnetic susceptibility distribution information under the electric state, and the state of charge will be subdivided as much as possible, so as to obtain the magnetic susceptibility distribution information of the battery under each state of charge.
  • the technical solution provided in the present application when the battery to be detected is tested, since different amounts can be judged based on the magnetic susceptibility distribution information in the horizontal direction and the vertical direction, the technical solution provided in the present application
  • the reference magnetic susceptibility distribution information when saved in advance, it can be saved according to two types of magnetic susceptibility distribution information in the horizontal and vertical directions, so that it can be quickly searched according to the magnetic susceptibility distribution information or magnetic susceptibility distribution field map in the required direction when calling transfer.
  • the reference magnetic susceptibility distribution information may be stored in a battery analysis device.
  • the battery analysis function is integrated into the battery detection device, that is, when the battery detection device has the function of analyzing the battery
  • the reference magnetic susceptibility distribution information may also be stored in the battery detection device, which is specifically set according to actual needs. It is not limited here.
  • the reference magnetic susceptibility distribution information refers to magnetic susceptibility distribution information stored on a network side or in the cloud. It can be understood that, in the current embodiment, the battery detection system has a function of communicating with external devices for Exchange data information.
  • FIG. 2 is a schematic flowchart of a battery detection method according to an embodiment of the present application.
  • the detection result in the embodiment shown in FIG. 2 includes a state of charge
  • the obtained test magnetic susceptibility distribution information of the battery to be tested includes: a first test magnetic susceptibility distribution field diagram of the battery to be tested in a horizontal direction.
  • the above steps comparing the test magnetic susceptibility distribution information with the reference magnetic susceptibility distribution information, and obtaining the detection result of the battery to be detected from the comparison result, further comprising steps S221 to S223.
  • S221 Find a plurality of first reference magnetic susceptibility distribution field maps in the horizontal direction that match the characteristic parameters of the battery to be detected from the preset information.
  • the preset information includes at least a part of the reference magnetic susceptibility distribution information.
  • Battery characteristic parameters include: battery brand, battery parameters, etc. (such as battery rated voltage, rated current, capacity, etc.).
  • the magnetic susceptibility distribution field diagram is a diagram showing the magnetic susceptibility distribution information directly, and the magnetic susceptibility of different sizes is represented according to the depth of color to reflect the change of magnetic susceptibility.
  • the first reference magnetic susceptibility distribution field diagram refers to a magnetic susceptibility field distribution field diagram that matches the brand and parameters of the battery to be tested.
  • the first magnetic susceptibility distribution field diagram includes the magnetic susceptibility distribution field diagram of the battery under various states of charge. Therefore, the number is multiple, which respectively corresponds to the number of states of charge of the battery.
  • the reference magnetic susceptibility distribution information in the battery detection system is stored in association with its corresponding battery brand and battery parameters. Therefore, after obtaining the test magnetic susceptibility distribution information of the battery to be tested, Further, according to the brand and parameters of the battery to be detected, a plurality of first reference magnetic susceptibility distribution field maps in the horizontal direction that match the characteristic parameters of the battery to be detected are found from the preset information.
  • the current reference magnetic susceptibility distribution field map can only be determined when the characteristic parameters of the battery to be tested are consistent with the battery characteristic parameters corresponding to the reference magnetic susceptibility distribution field map, that is, the same battery brand and other basic parameters of the battery are also the same. Not the first reference susceptibility distribution field diagram.
  • the brand and parameters of the battery to be tested will be obtained at the same time as or after step S110 when the test magnetic susceptibility distribution information of the battery to be tested is obtained.
  • the brand and parameters of the battery to be tested are collectively referred to as the battery to be tested here.
  • Characteristic parameters In one embodiment, the brand and parameters of the battery to be tested are input by the testing personnel. In another embodiment, when the battery detection system has an identification function, the brand and parameters of the battery can be automatically identified by the identification component in the system, and after being verified by the inspector, it will be further obtained based on the obtained battery brand and parameters. A plurality of first reference magnetic susceptibility distribution information matching the horizontal direction.
  • S222 From a plurality of first reference magnetic susceptibility distribution field maps, find a first reference magnetic susceptibility distribution field map that best matches the first test magnetic susceptibility distribution field map.
  • a first reference that best matches the first test magnetic susceptibility distribution field map is further found in the plurality of first reference magnetic susceptibility distribution field maps obtained in step S221.
  • Magnetic susceptibility distribution field diagram when the magnetic susceptibility distribution information reflected in the first reference magnetic susceptibility distribution field map is the same as the magnetic susceptibility distribution information reflected in the first test magnetic susceptibility distribution field map obtained after detection, it is determined that A reference magnetic susceptibility distribution field pattern matches the first test magnetic susceptibility distribution field pattern.
  • S223 Determine the state of charge of the battery to be detected by using the amount of charge corresponding to the first reference magnetic susceptibility distribution field diagram that is most matched.
  • the reference magnetic susceptibility distribution information in this application is stored in association with its corresponding state of charge of the battery (the state of charge may also be referred to as the amount of electric charge in the current embodiment). Therefore, the first test magnetic susceptibility distribution field is found. After the first reference magnetic susceptibility distribution field map with the best matching map is used, the charge capacity corresponding to the first matching magnetic field susceptibility distribution field map with the best matching is used to determine the state of charge of the battery to be detected.
  • the battery brand and parameters corresponding to the best matching first reference magnetic susceptibility distribution field map match the battery to be tested, and the corresponding magnetic susceptibility distribution information also matches the magnetic susceptibility distribution information of the battery to be tested, and because the magnetic susceptibility distribution The information can accurately reflect the state of charge of the battery, so the state of charge of the battery to be detected corresponds to the amount of charge corresponding to the obtained best matching first reference susceptibility distribution field map.
  • the first test magnetic susceptibility distribution field map of the battery to be tested under the same state may be obtained multiple times, and the obtained The plurality of first test susceptibility distribution field maps match the first reference susceptibility distribution field map, and then the state of charge of the battery to be detected is determined based on the charge capacity corresponding to the obtained plurality of first reference susceptibility distribution field maps.
  • the average value of multiple charge amounts can be obtained, and the multiple values of multiple charge amounts can also be obtained to obtain a more accurate charge amount of the battery to be detected, and to obtain a charge state of the battery to be detected more accurately.
  • the state of charge includes whether the remaining power and / or the capacity of the battery to be detected are normal. That is, by using the battery detection method provided in this application, it is possible to detect whether the state of charge and / or the capacity of the battery is normal.
  • the remaining power of the battery to be detected refers to the current remaining available power of the battery.
  • Whether the charge capacity of the battery to be tested is normal refers to whether the current total charge capacity of the battery belongs to a normal value and whether it conforms to the current parameter battery charge capacity setting. For details, please refer to the following description.
  • the above step S223 further includes: using the charge capacity corresponding to the first matching magnetic field distribution map of the best match as the remaining charge capacity of the battery to be detected.
  • the remaining charge capacity of the battery to be detected can be directly determined by determining the magnetic susceptibility distribution field map of the battery. Similarly, the remaining charge of the battery to be detected can be determined by averaging multiple tests to make the measured charge more accurate.
  • the above step S223 further includes: comparing the obtained charge capacity with a preset charge capacity threshold to determine whether the charge capacity of the battery to be detected is normal.
  • the preset charge capacity threshold is the charge capacity of the battery in various states calculated after a large number of batteries are detected in advance, such as the charge capacity of a newly manufactured battery, the charge capacity for a continuous discharge of n hours, and the like.
  • the preset power threshold can be a range or a minimum value. When the charged capacity of the battery to be detected obtained is smaller than a preset threshold value, it is determined that the charged capacity of the battery to be detected is abnormal, otherwise it is determined that the charged capacity of the battery to be detected is normal or good.
  • the detection result of the battery to be detected is a healthy state, that is, detecting whether the battery to be detected is healthy or not, in different embodiments, it can also be referred to as detecting whether the battery to be detected has a physical defect.
  • the obtained test magnetic susceptibility distribution information includes: a second test magnetic susceptibility distribution field map of the battery to be tested in a vertical direction.
  • the steps compare the test magnetic susceptibility distribution information with the reference magnetic susceptibility distribution information, and obtain the detection result of the battery to be detected from the comparison result further including: S321 to S322.
  • S321 Obtain second reference magnetic susceptibility distribution information in the vertical direction from the preset information.
  • the preset information refers to reference magnetic susceptibility distribution information.
  • the second reference magnetic susceptibility distribution information refers to the reference magnetic susceptibility distribution information that matches the brand and parameters of the battery and is reflected in the vertical direction.
  • the specific magnetic susceptibility distribution information may be a magnetic susceptibility distribution field map.
  • the magnetic susceptibility distribution information may also be used. Is displayed in other forms. When physical defects occur in the same battery, the corresponding magnetic susceptibility distributions are also different due to different physical defects, which can be specifically expressed as having different magnetic susceptibility distribution field maps. Therefore, the second reference magnetic susceptibility distribution information in the vertical direction obtained in step S321 may be multiple, corresponding to different physical defects or different degrees of physical defects.
  • S322 Compare the second magnetic susceptibility distribution information with the second reference magnetic susceptibility distribution information, and obtain the physical defect of the battery to be detected from the comparison result.
  • the second magnetic susceptibility distribution information refers to magnetic susceptibility distribution information of the battery to be detected in the vertical direction obtained by the battery detection device, and may specifically be a magnetic susceptibility field distribution map of the battery to be detected in the vertical direction.
  • the physical defects include: at least one of electrode folding, electrode missing, and added debris.
  • the technical solution provided can only detect the physical defects mentioned above.
  • FIG. 4 is a schematic flowchart of a battery detection method in another embodiment of the present application.
  • the magnetic susceptibility distribution of the battery to be tested during charging or discharging can be obtained based on the technical solution provided in the present application, and the charging or discharging result of the battery can be further analyzed according to the magnetic susceptibility obtained from the detection, or Correspondence between battery charge and battery susceptibility is obtained. Since the battery itself has an initial magnetic susceptibility, if it is necessary to obtain the battery susceptibility information more accurately, before obtaining the test magnetic susceptibility distribution information of the battery to be tested, first obtain the reference magnetic susceptibility distribution information of the battery to be tested. As can be seen from the schematic diagram shown in FIG. 4, in the battery detection method provided by the present application, before obtaining the test magnetic susceptibility distribution information of the battery to be detected in step S110, the method provided by the present application further includes:
  • S401 Obtain reference magnetic susceptibility distribution information of a battery to be detected before charging or discharging using a magnetic resonance device.
  • the reference magnetic susceptibility distribution information has nothing to do with the charge capacity of the battery and the amount of redox reaction of the battery. As long as the battery is placed in the magnetic resonance device (no need to connect the battery to any circuit), it can be read from the magnetic resonance device The reference magnetic susceptibility distribution information is obtained.
  • the reference magnetic susceptibility is related to the magnetic characteristics of the battery itself, and it is specifically manifested that the influence based on the magnetic characteristics of the battery itself will respond to a change of 1-2 ppm.
  • S410 Acquire test magnetic susceptibility distribution information of a battery to be detected.
  • the battery analysis device is set to uniformly subtract the value corresponding to the reference magnetic susceptibility distribution information from the obtained magnetic susceptibility distribution information. For example, if the reference magnetic susceptibility distribution information is not obtained in one embodiment, since the present application determines the state of charge and physical defects based on the magnetic susceptibility distribution information (also referred to as the change in magnetic susceptibility), it does not Affects the accurate judgment of the battery's state of charge and physical defects.
  • FIG. 5 is a schematic flowchart of a battery detection method in another embodiment of the present application. It can be known from the embodiment shown in FIG. 4 that before obtaining the test magnetic susceptibility distribution information of the battery to be tested, the reference magnetic susceptibility distribution information of the battery to be tested is further obtained. In the current embodiment, step S110 is to obtain the battery to be tested.
  • the test magnetic susceptibility distribution information includes:
  • S501 Obtain initial test magnetic susceptibility distribution information of a battery to be tested after being charged or discharged using a magnetic resonance device.
  • step S501 may also be obtaining the initial test magnetic susceptibility distribution information of the battery to be detected during the charging process.
  • the initial test magnetic susceptibility distribution information of the battery to be tested after being charged by the magnetic resonance device is acquired.
  • S502 Correspond to the susceptibility in the initial test susceptibility distribution information by subtracting the susceptibility in the reference susceptibility distribution information to obtain the final test susceptibility distribution information of the battery to be tested.
  • the battery testing device automatically subtracts the magnetic susceptibility in the reference magnetic susceptibility distribution information from the obtained initial test magnetic susceptibility distribution information to obtain the final test magnetic susceptibility distribution information of the battery to be tested. It can be known from this that the final test magnetic susceptibility distribution information of the battery to be tested is information obtained by removing the magnetic susceptibility from the reference magnetic susceptibility distribution information.
  • the battery detection method provided in the present application mainly determines the state of charge of the battery to be detected based on the change in magnetic susceptibility, so whether to subtract the susceptibility from the reference susceptibility distribution information does not affect the state of charge of the battery Judgment and judgment of battery physical defects. Therefore, in other embodiments, the user may also manually select whether or not the magnetic susceptibility in the initial test magnetic susceptibility distribution information should be subtracted from the magnetic susceptibility in the reference magnetic susceptibility distribution information.
  • FIG. 6 is a schematic diagram showing the effect of a magnetic field distribution field diagram of the battery to be tested in the horizontal direction when the technical solution provided in the present application is used to detect and analyze the discharging process of the battery to be tested in an embodiment. It can be known from FIG. 6 that as the battery discharge capacity increases, that is, from 1 to 5 in FIG. 6, the magnetic susceptibility of the battery to be tested is gradually decreasing, so the one-to-one correspondence between the battery charge and the magnetic susceptibility Relationship and accurately determine the state of charge of the battery.
  • FIG. 7 is a schematic view showing the effect of a magnetic field distribution field map of a battery to be tested in a vertical direction (battery electrode direction) in an embodiment of a battery testing method of the present application.
  • 1 and 5 in FIG. 7 are magnetic susceptibility distribution field diagrams when the battery is free of physical defects, that is, the magnetic susceptibility distribution of the battery to be tested without physical defects is uniform and close to zero.
  • Both 2 and 6 in Fig. 7 are magnetic susceptibility distribution field diagrams when the electrodes of the battery are folded. It can be seen that when the electrode of the battery to be tested is folded, the magnetic susceptibility is abnormally high at one end in the vertical direction, and the middle part It will be unusually small.
  • Figures 3 and 7 in FIG. 7 are magnetic susceptibility distribution field diagrams when the battery electrodes are missing. It can be seen from the figure that the magnetic susceptibility of the battery in the vertical direction is relatively uniform and both are greater than zero. 4 and 8 in FIG.
  • FIG. 7 are magnetic field distribution field diagrams measured when there is a foreign substance (some substances that are not part of the battery, such as debris) in the battery to be tested. As can be seen from the figure, the magnetic susceptibility distribution of the battery is vertical Two areas in the direction appear very close to zero.
  • FIG. 6 and FIG. 7 are only schematic diagrams of the results obtained by testing a certain type of battery in an embodiment. In actual testing, specific batteries are based on their corresponding reference references. The magnetic susceptibility distribution information and the actual measured magnetic susceptibility distribution information shall prevail, which will not be detailed one by one here.
  • FIG. 8 is a schematic structural diagram of a battery analysis device 800 according to an embodiment of the present application.
  • the battery analysis device 800 includes a memory 802 and a processor 801.
  • the memory 802 is configured to store program data.
  • the processor 801 is configured to run the program data stored in the memory 802 to execute the method illustrated in FIG. 1 to FIG. 5 above and corresponding embodiments.
  • the battery analysis device 800 provided in the present application includes a personal computer. It can be understood that the battery analysis device 800 provided in the present application is not limited to a personal computer, and may be any other terminal device that can execute the program data corresponding to FIG. 1 to FIG. 7.
  • FIG. 9 is a schematic structural diagram of a battery detection system 900 in an embodiment of the present application.
  • the battery detection system provided in this application includes a battery detection device 901 and a battery analysis device 902 connected to the battery detection device 901.
  • the battery detection device 901 is configured to detect the magnetic susceptibility of the battery to be detected to obtain test magnetic susceptibility distribution information, and output the information to the battery analysis device 902.
  • the battery analysis device 902 is a device as shown in FIG. 8, and is configured to further analyze the detection result of the battery to be detected based on the test magnetic susceptibility distribution information output by the battery detection device 901. It can be understood that, in other embodiments, the battery detection device 901 and the battery analysis device 902 may be integrated into one device, so that the battery detection function and the battery analysis function are integrated into the same device.
  • the battery detection system 900 includes a battery charging and discharging device (not shown) in addition to the battery detection device 901 and the battery analysis device 902.
  • the battery charging and discharging device is used for charging or discharging the battery to be tested, so as to charge the battery to be tested according to a set rule, or to discharge the battery to be tested according to a preset rule, so that the battery to be tested can be replaced from the original one.
  • the state of charge is changed to a certain state of charge.
  • the present application further provides a storage medium 1000.
  • the storage medium 1000 stores program data 1001.
  • the program data 1001 is executed, the battery detection method described above and the methods described in various embodiments are implemented.
  • the storage medium 1000 having a storage function may be one of a memory, a personal computer, a server, a network device, or a USB flash drive.

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Abstract

A battery testing method. The method comprises: acquiring resulting magnetic susceptibility distribution information of a battery under test (S110); and analyzing the resulting magnetic susceptibility distribution information to obtain a test result of the battery (S120), wherein the test result comprises a state of charge and/or a physical defect. The method can realize non-destructive testing of a battery. Also provided are a battery analysis device and a battery testing system.

Description

电池检测方法、***及电池分析装置Battery detection method, system and battery analysis device 【技术领域】[Technical Field]
本申请涉及电池检测领域，特别是涉及一种电池检测方法、***及电池分析装置。The present application relates to the field of battery detection, and in particular, to a battery detection method, system, and battery analysis device.
【背景技术】【Background technique】
随着电子产业的快速发展，对于电池的需求量的越来越大。为保证各种电子产品能够实现安全稳定地供电，对于电池的检测是非常必要的。所以近年来，电池行业中由最初的不注重电池质量的检测，到电池电化学工作站的检测、电池的仿真模拟等。但是，现有行业中对于电池的检测依旧缺乏可实现实时性、数量化且对电池无损的检测方法。With the rapid development of the electronics industry, the demand for batteries is increasing. In order to ensure that various electronic products can achieve safe and stable power supply, it is necessary to test the battery. Therefore, in recent years, the battery industry has changed from the initial lack of attention to battery quality testing to battery electrochemical workstation testing and battery simulation. However, in the existing industry, there is still a lack of detection methods that can achieve real-time, quantitative, and non-destructive testing of batteries.
【发明内容】[Summary of the Invention]
本申请主要解决的技术问题是提供一种电池检测方法、***及电池分析装置，能够实现对电池的无损检测。The technical problem mainly solved by this application is to provide a battery detection method, system and battery analysis device, which can realize non-destructive detection of a battery.
为解决上述技术问题，本申请采用的一个技术方案是：提供一种电池检测方法，所述方法包括：In order to solve the above technical problem, a technical solution adopted in the present application is to provide a battery detection method, where the method includes:
获取待检测电池的测试磁化率分布信息；Obtaining test magnetic susceptibility distribution information of a battery to be tested;
对所述测试磁化率分布信息进行分析，得到所述待检测电池的检测结果，其中，所述检测结果包括荷电状态和/或物理缺陷情况。The test magnetic susceptibility distribution information is analyzed to obtain a test result of the battery to be tested, wherein the test result includes a state of charge and / or a physical defect.
为解决上述技术问题，本申请采用的另一个技术方案是，提供一种电池分析装置，所述分析装置包括：存储器和处理器，所述存储器用于存储程序数据，所述处理器用于运行所述程序数据以执行如上所述的方法。In order to solve the above technical problem, another technical solution adopted in the present application is to provide a battery analysis device, the analysis device includes: a memory and a processor, the memory is used to store program data, and the processor is used to run The program data is described to perform the method described above.
为解决上述技术问题，本申请采用的再一个技术方案是，提供一种电池检测***，所述***包括：电池检测装置，以及与电池检测装置连接的电池分析装置；In order to solve the above technical problem, another technical solution adopted in the present application is to provide a battery detection system, which includes a battery detection device and a battery analysis device connected to the battery detection device;
所述电池检测装置用于检测所述待检测电池的磁化率以得到测试磁化率分布信息，并输出至所述电池分析装置；The battery detection device is configured to detect the magnetic susceptibility of the battery to be detected to obtain test magnetic susceptibility distribution information, and output the information to the battery analysis device;
所述电池分析装置为如上所述的电池分析装置，用于基于所述电池检测装置输出的所述测试磁化率分布信息，进一步分析所述待检测电池的检测结果。The battery analysis device is a battery analysis device as described above, and is configured to further analyze a detection result of the battery to be detected based on the test magnetic susceptibility distribution information output by the battery detection device.
以上方案，通过获取待检测电池的测试磁化率分布信息，并对所获取到的测试磁化率进一步分析后获得待检测电池的荷电状态和/或物理缺陷，可实现在不损坏电池内部结构的情况下，快速准确地检测到电池的荷电状态和/或有无相关物理缺陷，实现了电池的无损检测。In the above solution, by obtaining the test magnetic susceptibility distribution information of the battery to be tested, and further analyzing the obtained test magnetic susceptibility, the state of charge and / or physical defects of the battery to be tested can be obtained, so that Under the circumstances, the state of charge of the battery and / or the presence or absence of related physical defects are quickly and accurately detected, thereby realizing non-destructive testing of the battery.
【附图说明】[Brief Description of the Drawings]
图1是本申请一种电池检测方法一实施例的流程示意图；1 is a schematic flowchart of an embodiment of a battery detection method according to the present application;
图2是本申请一种电池检测方法另一实施例的流程示意图；2 is a schematic flowchart of another embodiment of a battery detection method according to the present application;
图3是本申请一种电池检测方法又一实施例的流程示意图；3 is a schematic flowchart of another embodiment of a battery detection method according to the present application;
图4是本申请一种电池检测方法又一实施例的流程示意图；4 is a schematic flowchart of another embodiment of a battery detection method according to the present application;
图5是本申请一种电池检测方法再一实施例的流程示意图；5 is a schematic flowchart of another embodiment of a battery detection method according to the present application;
图6是本申请一种电池检测方法一实施例中所测得的待检测电池放电过程在水平方向上的磁化率分布场图效果示意图；FIG. 6 is a schematic diagram of a magnetic field distribution field map effect in a horizontal direction of a discharge process of a battery to be detected measured in an embodiment of a battery detection method according to the present application; FIG.
图7是本申请一种电池检测方法一实施例中所测得的待检测电池放电过程在垂直方向上的磁化率分布场图效果示意图；7 is a schematic diagram of a magnetic field distribution field map effect in a vertical direction of a battery to be detected during a discharging process measured in an embodiment of a battery detection method according to the present application;
图8是本申请一种电池分析装置一实施例的结构示意图；8 is a schematic structural diagram of an embodiment of a battery analysis device according to the present application;
图9是本申请一种电池检测***一实施例的结构示意图；9 is a schematic structural diagram of an embodiment of a battery detection system according to the present application;
图10是本申请一种存储介质一实施例的结构示意图。FIG. 10 is a schematic structural diagram of an embodiment of a storage medium according to the present application.
【具体实施方式】【detailed description】
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。可以理解的是，此处所描述的具体实施例仅用于解释本申请，而非对本申请的限定。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、***、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless it is specifically and specifically defined otherwise. Furthermore, the terms "including" and "having", as well as any of them, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device containing a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特 性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例在不矛盾的情况下可以与其它实施例相结合。Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. Those skilled in the art understand explicitly and implicitly that the embodiments described herein can be combined with other embodiments without contradiction.
请参见图1，为本申请一种电池检测方法一实施例流程示意图。其中，具体包括步骤S110至步骤S120。Please refer to FIG. 1, which is a schematic flowchart of an embodiment of a battery detection method according to the present application. Specifically, it includes steps S110 to S120.
S110：获取待检测电池的测试磁化率分布信息。S110: Obtain test magnetic susceptibility distribution information of the battery to be detected.
其中，磁化率是表征磁介质属性的物理量，是物质或材料(物质或材料可称为磁介质)在磁场作用下磁化强度与磁场强度的比值。磁化强度是指将某一物质或材料放置在一磁场中，经过磁场的作用下会显示一定特征的磁性。而由于磁化率具有材料依赖性，受到电池内部材料的分布、电池使用过程影响而发生改变。即电池在材料氧化还原反应期间，磁化率会发生变化，故可以通过获取到电池的磁化率分布信息，可准确了解到电池的荷电状态以及是否存在故障。Among them, magnetic susceptibility is a physical quantity that characterizes the properties of a magnetic medium, and is a ratio of the magnetization intensity of a substance or a material (a substance or a material may be referred to as a magnetic medium) to the intensity of a magnetic field under the action of a magnetic field. Magnetization means that a certain substance or material is placed in a magnetic field and will show certain characteristics of magnetism under the action of the magnetic field. However, because the magnetic susceptibility is material dependent, it is affected by the distribution of the battery's internal materials and the use of the battery. That is, during the redox reaction of the battery, the magnetic susceptibility will change. Therefore, by obtaining the magnetic susceptibility distribution information of the battery, it is possible to accurately understand the state of charge of the battery and whether there is a fault.
本申请中所阐述的待检测电池为被检测的电池或是等待检测的电池，在此并不限定待检测电池的种类。测试磁化率分布信息具体是指可以反应待检测电池磁化率分布情况的信息，具体可以是磁化率场分布图，或者是详细的磁化率统计图表等。The battery to be tested described in this application is a battery to be tested or a battery to be tested, and the type of the battery to be tested is not limited herein. The test magnetic susceptibility distribution information specifically refers to information that can reflect the magnetic susceptibility distribution of the battery to be detected, and specifically may be a magnetic susceptibility field distribution map, or a detailed magnetic susceptibility statistical chart.
在当前实施例中，获取到待检测电池的测试磁化率分布信息的方式具体可以包括：通过电池检测装置实时获取或者是通过与其他设备通信间接获取到，而电池检测装置至少包括：磁共振装置。In the current embodiment, the manner of obtaining the test magnetic susceptibility distribution information of the battery to be detected may specifically include: real-time acquisition through a battery detection device or indirect acquisition through communication with other equipment, and the battery detection device includes at least: a magnetic resonance device .
在其他实施例中，在步骤S110获取待检测电池的测试磁化率分布信息之前，会按照预设的充电规则完成对待检测电池的充电并静置预设时间，以消除松弛效应；或者是按照预设规则对完成对待检测电池的放电并静置预设时间，以消除松弛效应。换而言之，测试磁化率分布信息是在待检测电池按照预设充电规则完成充电或按照预设规则放电预设时间胡，并静置预设时间后检测得到的。其中，预设的充电规则是待检测电池的规则，符合待检测电池的额定电压电流的要求，放电所遵循的预设规则同样是依据待检测电池的放电规则。静置预设时间是为了消除电池的松弛效应，具体静置的时长依据实际的需要，在此不做任何的限定。In other embodiments, before obtaining the test magnetic susceptibility distribution information of the battery to be tested in step S110, charging of the battery to be tested is completed according to a preset charging rule and left to stand for a preset time to eliminate the slack effect; or Set a rule to complete the discharge of the battery to be tested and let it stand for a preset time to eliminate the relaxation effect. In other words, the test magnetic susceptibility distribution information is detected after the battery to be tested is charged in accordance with a preset charging rule or discharged in accordance with a preset rule for a preset time, and is left to stand for a preset time. Wherein, the preset charging rule is a rule of the battery to be tested, which meets the requirements of the rated voltage and current of the battery to be tested, and the preset rule followed by the discharge is also based on the discharging rule of the battery to be tested. The preset rest time is to eliminate the relaxation effect of the battery. The specific rest time is based on actual needs, and is not limited here.
S120：对测试磁化率分布信息进行分析，得到待检测电池的检测结果。S120: Analyze the test magnetic susceptibility distribution information to obtain the detection result of the battery to be detected.
当获取到待检测电池的测试磁化率分布信息后，会进一步对所获得的测试 磁化率分布信息进行分析以得到待检测电池的检测结果。其中，对测试磁化率分布信息的进行分析时，会进一步结合待检测电池的基本参数。而所参考的电池基本参数包括：电池的规格、电池品牌、电池的生产时间等等。其中，测试磁化率分布信息包括：磁化率分布场图；检测结果包括荷电状态和/或物理缺陷情况。而进一步的，电池的荷电状态是指电池当前的荷电能力，是指电池使用一段时间或长期搁置不用后的剩余容量与其完全充电状态的容量的比值，常用百分数表示；电池物理缺陷具体包括：电极折叠、电极缺失、存在碎片等，当然并不限于此。When the test magnetic susceptibility distribution information of the battery to be tested is obtained, the obtained test magnetic susceptibility distribution information is further analyzed to obtain the test result of the battery to be tested. When analyzing the test magnetic susceptibility distribution information, the basic parameters of the battery to be tested will be further combined. The referenced battery basic parameters include: battery specifications, battery brand, battery production time, and so on. Wherein, the test magnetic susceptibility distribution information includes: magnetic susceptibility distribution field map; the detection result includes a state of charge and / or a physical defect. Further, the state of charge of the battery refers to the current charge capacity of the battery, which refers to the ratio of the remaining capacity of the battery after a period of use or long-term unused to the capacity of its fully charged state, which is usually expressed in percentages; physical defects of the battery include : Electrode folding, missing electrode, presence of debris, etc., of course, it is not limited to this.
上述实施例中，通过获取待检测电池的测试磁化率分布信息，进一步对测试磁化率分布信息进行深入分析后，从而得到待检测电池的荷电状态和/或物理缺陷，在此过程中实现对电池的无损检测，保证电池的质量。In the above embodiment, the test magnetic susceptibility distribution information of the battery to be tested is obtained, and the test magnetic susceptibility distribution information is further analyzed to obtain the state of charge and / or physical defects of the battery to be tested. Non-destructive testing of batteries to ensure battery quality.
进一步的，在一实施例中，步骤S120进一步包括：将测试磁化率分布信息与参考磁化率分布信息进行比对，并由比对结果得到待检测电池的检测结果。Further, in an embodiment, step S120 further includes: comparing the test magnetic susceptibility distribution information with the reference magnetic susceptibility distribution information, and obtaining the detection result of the battery to be detected from the comparison result.
其中，参考磁化率分布信息是预先保存在电池检测***中，是预先检测各个品牌中各个参数电池所得的磁化率分布信息。需要说明的是，每个电池在某一荷电状态下的参考磁化率分布信息是对预设数量的电池多次测试后，并结合理论值经过取均值后求得的。在获取到参考磁化率分布信息后，会进一步将参考磁化率分布信息与该电池的荷电状态(在不同的实施例中，荷电状态进一步包括荷电量、荷电量是否正常等)、相关参数、品牌、生产年份等关联保存，以在检测和/或分析未知荷电状态或未知是否存在物理缺陷的电池时调用参考。所以为了测试不同品牌以及不同参数的电池时，均有对应的参考磁化率分布信息可以与测试所得的测试磁化率进行比对，电池检测***中会保存有各个品牌下各个参数的电池在不同荷电状态下的磁化率分布信息，且会尽可能将荷电状态细分，以便通过可以得到电池在各个荷电状态下的磁化率分布信息。The reference magnetic susceptibility distribution information is stored in advance in the battery detection system, and is magnetic susceptibility distribution information obtained by detecting each parameter battery in each brand in advance. It should be noted that the reference magnetic susceptibility distribution information of each battery under a certain state of charge is obtained after a number of tests on a preset number of batteries, combined with a theoretical value and averaging. After the reference susceptibility distribution information is obtained, the reference susceptibility distribution information and the state of charge of the battery (in different embodiments, the state of charge further includes the amount of charge, whether the amount of charge is normal, etc.) and related parameters , Brand, year of production, etc., to be referenced when detecting and / or analyzing a battery with an unknown state of charge or unknown physical defect. Therefore, in order to test batteries of different brands and different parameters, there is corresponding reference magnetic susceptibility distribution information that can be compared with the test magnetic susceptibility obtained from the test. The battery detection system will store batteries with different parameters for each brand under different loads. The magnetic susceptibility distribution information under the electric state, and the state of charge will be subdivided as much as possible, so as to obtain the magnetic susceptibility distribution information of the battery under each state of charge.
需要说明的是，由于本申请提供的技术方案中，对待检测电池进行检测时，由于可以分别基于水平方向和垂直方向上的磁化率分布信息判断不同的量，所以本申请所提供的技术方案中，参考磁化率分布信息预先保存时，可以按照水平方向和垂直方向上两类磁化率分布信息进行保存，以方便调用时可快速根据所需方向的磁化率分布信息或磁化率分布场图进行查找调用。It should be noted that, in the technical solution provided in the present application, when the battery to be detected is tested, since different amounts can be judged based on the magnetic susceptibility distribution information in the horizontal direction and the vertical direction, the technical solution provided in the present application When the reference magnetic susceptibility distribution information is saved in advance, it can be saved according to two types of magnetic susceptibility distribution information in the horizontal and vertical directions, so that it can be quickly searched according to the magnetic susceptibility distribution information or magnetic susceptibility distribution field map in the required direction when calling transfer.
而对于参考磁化率分布信息所保存的位置并没有限定，具体依据实际的需要进行设置。在一实施例中，参考磁化率分布信息可以是保存在电池分析装置。 在另一实施例中，当电池分析功能集成至电池检测装置时，即电池检测装置具备分析电池的功能时，参考磁化率分布信息也可以是保存在电池检测装置，具体依据实际的需要进行设定，在此并不做限定。在又一实施例中，参考磁化率分布信息是指保存在网络端或者云端的磁化率分布信息，可以理解的，在当前实施例中，电池检测***具有与外部设备进行通信的功能，用于交换数据信息。There is no limitation on the location where the reference magnetic susceptibility distribution information is stored, and it is set according to actual needs. In one embodiment, the reference magnetic susceptibility distribution information may be stored in a battery analysis device. In another embodiment, when the battery analysis function is integrated into the battery detection device, that is, when the battery detection device has the function of analyzing the battery, the reference magnetic susceptibility distribution information may also be stored in the battery detection device, which is specifically set according to actual needs. It is not limited here. In another embodiment, the reference magnetic susceptibility distribution information refers to magnetic susceptibility distribution information stored on a network side or in the cloud. It can be understood that, in the current embodiment, the battery detection system has a function of communicating with external devices for Exchange data information.
请参见图2，图2是本申请电池检测方法在一实施例中的流程示意图。图2所示的实施例中检测结果包括荷电状态，所获取的待检测电池的测试磁化率分布信息包括：待检测电池在水平方向上的第一测试磁化率分布场图。Please refer to FIG. 2, which is a schematic flowchart of a battery detection method according to an embodiment of the present application. The detection result in the embodiment shown in FIG. 2 includes a state of charge, and the obtained test magnetic susceptibility distribution information of the battery to be tested includes: a first test magnetic susceptibility distribution field diagram of the battery to be tested in a horizontal direction.
上述步骤：将测试磁化率分布信息与参考磁化率分布信息进行比对，并由比对结果得到待检测电池的检测结果进一步包括步骤S221至S223。The above steps: comparing the test magnetic susceptibility distribution information with the reference magnetic susceptibility distribution information, and obtaining the detection result of the battery to be detected from the comparison result, further comprising steps S221 to S223.
S221：从预设信息中查找到与待检测电池的特征参数匹配的在水平方向的多个第一参考磁化率分布场图。S221: Find a plurality of first reference magnetic susceptibility distribution field maps in the horizontal direction that match the characteristic parameters of the battery to be detected from the preset information.
其中，预设信息包括：参考磁化率分布信息中的至少部分参考磁化率分布信息。电池的特征参数包括：电池品牌、电池参数等(如电池额定电压、额定电流、容量等等)。磁化率分布场图是直接展示磁化率分布信息的图，且根据颜色的深浅不同表示不同大小的磁化率，用以体现磁化率的变化情况。而第一参考磁化率分布场图是指与待检测电池的品牌以及参数匹配的磁化率场分布场图，该第一磁化率分布场图包括电池在各个荷电状态下的磁化率分布场图，故数量为多个，分别对应电池的荷电状态的数量。The preset information includes at least a part of the reference magnetic susceptibility distribution information. Battery characteristic parameters include: battery brand, battery parameters, etc. (such as battery rated voltage, rated current, capacity, etc.). The magnetic susceptibility distribution field diagram is a diagram showing the magnetic susceptibility distribution information directly, and the magnetic susceptibility of different sizes is represented according to the depth of color to reflect the change of magnetic susceptibility. The first reference magnetic susceptibility distribution field diagram refers to a magnetic susceptibility field distribution field diagram that matches the brand and parameters of the battery to be tested. The first magnetic susceptibility distribution field diagram includes the magnetic susceptibility distribution field diagram of the battery under various states of charge. Therefore, the number is multiple, which respectively corresponds to the number of states of charge of the battery.
如上所述，本申请所提供的技术方案中，电池检测***中的参考磁化率分布信息与其对应的电池品牌以及电池参数关联保存，故在获取到待检测电池的测试磁化率分布信息后，会进一步依据待检测电池的品牌及参数从预设信息中查找到与待检测电池的特征参数匹配的在水平方向上的多个第一参考磁化率分布场图。只有当待检测电池的特征参数与参考磁化率分布场图所对应的电池特征参数一致时，即电池品牌相同、电池的其他基本的参数也相同时，方可判定当前的参考磁化率分布场图未第一参考磁化率分布场图。As mentioned above, in the technical solution provided in the present application, the reference magnetic susceptibility distribution information in the battery detection system is stored in association with its corresponding battery brand and battery parameters. Therefore, after obtaining the test magnetic susceptibility distribution information of the battery to be tested, Further, according to the brand and parameters of the battery to be detected, a plurality of first reference magnetic susceptibility distribution field maps in the horizontal direction that match the characteristic parameters of the battery to be detected are found from the preset information. The current reference magnetic susceptibility distribution field map can only be determined when the characteristic parameters of the battery to be tested are consistent with the battery characteristic parameters corresponding to the reference magnetic susceptibility distribution field map, that is, the same battery brand and other basic parameters of the battery are also the same. Not the first reference susceptibility distribution field diagram.
可以理解的，在获取待检测电池的测试磁化率分布信息的同时或在步骤S110之后或之前，会获取到待检测电池的品牌及参数，在这里将待检测电池的品牌及参数统称待检测电池的特征参数。在一实施例中，待检测电池的品牌及参数均是由检测人员输入。在另一实施例中，电池检测***中具备识别功能时，电池的品牌和参数可由***中的识别部件自动识别，并由检测人员进行校对确 认后，会进一步基于所获得的电池品牌和参数获取与之匹配在水平方向的多个第一参考磁化率分布信息。It can be understood that the brand and parameters of the battery to be tested will be obtained at the same time as or after step S110 when the test magnetic susceptibility distribution information of the battery to be tested is obtained. The brand and parameters of the battery to be tested are collectively referred to as the battery to be tested here. Characteristic parameters. In one embodiment, the brand and parameters of the battery to be tested are input by the testing personnel. In another embodiment, when the battery detection system has an identification function, the brand and parameters of the battery can be automatically identified by the identification component in the system, and after being verified by the inspector, it will be further obtained based on the obtained battery brand and parameters. A plurality of first reference magnetic susceptibility distribution information matching the horizontal direction.
S222：从多个第一参考磁化率分布场图中，查找到与第一测试磁化率分布场图最匹配的第一参考磁化率分布场图。S222: From a plurality of first reference magnetic susceptibility distribution field maps, find a first reference magnetic susceptibility distribution field map that best matches the first test magnetic susceptibility distribution field map.
在获取到多个第一参考磁化率分布场图后，进一步在步骤S221中所得的多个第一参考磁化率分布场图中查找到与第一测试磁化率分布场图最匹配的第一参考磁化率分布场图。在当前实施例中，在第一参考磁化率分布场图中所反映的磁化率分布信息与检测所得的第一测试磁化率分布场图中所反映的磁化率分布信息相同时，判定此时第一参考磁化率分布场图与第一测试磁化率分布场图匹配。After obtaining a plurality of first reference magnetic susceptibility distribution field maps, a first reference that best matches the first test magnetic susceptibility distribution field map is further found in the plurality of first reference magnetic susceptibility distribution field maps obtained in step S221. Magnetic susceptibility distribution field diagram. In the current embodiment, when the magnetic susceptibility distribution information reflected in the first reference magnetic susceptibility distribution field map is the same as the magnetic susceptibility distribution information reflected in the first test magnetic susceptibility distribution field map obtained after detection, it is determined that A reference magnetic susceptibility distribution field pattern matches the first test magnetic susceptibility distribution field pattern.
S223：利用最匹配的第一参考磁化率分布场图对应的荷电量确定待检测电池的荷电状态。S223: Determine the state of charge of the battery to be detected by using the amount of charge corresponding to the first reference magnetic susceptibility distribution field diagram that is most matched.
本申请中的参考磁化率分布信息均是与其对应电池荷电状态(在当前实施例中也可将荷电状态称为是荷电量)关联保存，故在查找到与第一测试磁化率分布场图最匹配的第一参考磁化率分布场图后，会进一步利用所得的最匹配的第一参考磁化率分布场图所对应的荷电量确定待检测电池的荷电状态。由于最匹配的第一参考磁化率分布场图所对应的电池品牌、参数与待检测电池均匹配，且对应的磁化率分布信息与待检测电池的磁化率分布信息也匹配，又因为磁化率分布信息可准确反应电池的荷电状态，故待检测电池的荷电状态即对应着所得的最匹配的第一参考磁化率分布场图所对应的荷电量。The reference magnetic susceptibility distribution information in this application is stored in association with its corresponding state of charge of the battery (the state of charge may also be referred to as the amount of electric charge in the current embodiment). Therefore, the first test magnetic susceptibility distribution field is found. After the first reference magnetic susceptibility distribution field map with the best matching map is used, the charge capacity corresponding to the first matching magnetic field susceptibility distribution field map with the best matching is used to determine the state of charge of the battery to be detected. Because the battery brand and parameters corresponding to the best matching first reference magnetic susceptibility distribution field map match the battery to be tested, and the corresponding magnetic susceptibility distribution information also matches the magnetic susceptibility distribution information of the battery to be tested, and because the magnetic susceptibility distribution The information can accurately reflect the state of charge of the battery, so the state of charge of the battery to be detected corresponds to the amount of charge corresponding to the obtained best matching first reference susceptibility distribution field map.
可以理解的，在其他实施例中，为了更准确地确定待检测电池的荷电状态，可多次获取相同的状态下待检测电池的第一测试磁化率分布场图，并分别获取与所得的多个第一测试磁化率分布场图匹配的第一参考磁化率分布场图，然后基于所获得的多个第一参考磁化率分布场图所对应的荷电量确定待检测电池的荷电状态。其中，可以求取多个荷电量的均值，也可以求取多个荷电量的多数值，以获得更加准确的待检测电池的荷电量，可更加准确地获得待检测电池的荷电状态。It can be understood that, in other embodiments, in order to more accurately determine the state of charge of the battery to be tested, the first test magnetic susceptibility distribution field map of the battery to be tested under the same state may be obtained multiple times, and the obtained The plurality of first test susceptibility distribution field maps match the first reference susceptibility distribution field map, and then the state of charge of the battery to be detected is determined based on the charge capacity corresponding to the obtained plurality of first reference susceptibility distribution field maps. Among them, the average value of multiple charge amounts can be obtained, and the multiple values of multiple charge amounts can also be obtained to obtain a more accurate charge amount of the battery to be detected, and to obtain a charge state of the battery to be detected more accurately.
进一步的，在一实施例中，荷电状态包括待检测电池的剩余电量和/或荷电容量是否正常。即通过本申请所提供的电池检测方法，可以实现检测电池的荷电状态和/或荷电容量是否正常。其中，待检测电池的剩余电量是指电池的当前剩余可用的电量。待检测电池的荷电容量是否正常是指当前电池的总的荷电容 量是否属于正常值，是否符合当前参数电池的荷电容量设定。具体的，请参见下文的阐述。Further, in an embodiment, the state of charge includes whether the remaining power and / or the capacity of the battery to be detected are normal. That is, by using the battery detection method provided in this application, it is possible to detect whether the state of charge and / or the capacity of the battery is normal. The remaining power of the battery to be detected refers to the current remaining available power of the battery. Whether the charge capacity of the battery to be tested is normal refers to whether the current total charge capacity of the battery belongs to a normal value and whether it conforms to the current parameter battery charge capacity setting. For details, please refer to the following description.
在一实施例中，上述步骤S223进一步包括：将最匹配的第一参考磁化率分布场图对应的荷电量作为待检测电池的剩余荷电量。如上所述，由于电池的荷电量与电池的磁化率有着一一对应的关系，故可以直接通过确定电池的磁化率分布场图确定待检测电池的剩余荷电量。同理，可通过多次检测取均值确定待检测电池的剩余荷电量，以使得所测的荷电量更为准确。In an embodiment, the above step S223 further includes: using the charge capacity corresponding to the first matching magnetic field distribution map of the best match as the remaining charge capacity of the battery to be detected. As described above, since the charge capacity of the battery has a one-to-one correspondence with the magnetic susceptibility of the battery, the remaining charge capacity of the battery to be detected can be directly determined by determining the magnetic susceptibility distribution field map of the battery. Similarly, the remaining charge of the battery to be detected can be determined by averaging multiple tests to make the measured charge more accurate.
在另一实施例中，上述步骤S223进一步还包括：基于所得的荷电量与预设荷电量阈值进行比对，以判断待检测电池的荷电容量是否正常。其中，预设荷电量阈值是经过预先对大量电池检测后计算得到的电池在各种状态下的荷电量，如新出厂的电池的荷电量、持续放电n小时的荷电量等等。其中，预设电量阈值可以是一范围，也可以是一最小值。当检测所得待检测电池的荷电量小于预设电量阈值小值时，则判断待检测电池的荷电容量不正常，反之则判断待检测电池的荷电容量正常或者良好。In another embodiment, the above step S223 further includes: comparing the obtained charge capacity with a preset charge capacity threshold to determine whether the charge capacity of the battery to be detected is normal. The preset charge capacity threshold is the charge capacity of the battery in various states calculated after a large number of batteries are detected in advance, such as the charge capacity of a newly manufactured battery, the charge capacity for a continuous discharge of n hours, and the like. The preset power threshold can be a range or a minimum value. When the charged capacity of the battery to be detected obtained is smaller than a preset threshold value, it is determined that the charged capacity of the battery to be detected is abnormal, otherwise it is determined that the charged capacity of the battery to be detected is normal or good.
进一步的，请参见图3，为本申请在另一实施例的流程示意图。图3所示的实施例中，待检测电池的检测结果为健康状态，即检测待检测电池是否健康，在不同的实施例中也可以称为检测待检测电池是否存在物理缺陷。在当前实施例中，所获取的测试磁化率分布信息包括：待检测电池在垂直方向上的第二测试磁化率分布场图。Further, please refer to FIG. 3, which is a schematic flowchart of another embodiment of the present application. In the embodiment shown in FIG. 3, the detection result of the battery to be detected is a healthy state, that is, detecting whether the battery to be detected is healthy or not, in different embodiments, it can also be referred to as detecting whether the battery to be detected has a physical defect. In the current embodiment, the obtained test magnetic susceptibility distribution information includes: a second test magnetic susceptibility distribution field map of the battery to be tested in a vertical direction.
请参见图3，在当前实施例中，步骤将测试磁化率分布信息与参考磁化率分布信息进行比对，并由比对结果得到待检测电池的检测结果进一步包括：S321至S322。Referring to FIG. 3, in the current embodiment, the steps compare the test magnetic susceptibility distribution information with the reference magnetic susceptibility distribution information, and obtain the detection result of the battery to be detected from the comparison result further including: S321 to S322.
S321：从预设信息中获取垂直方向上的第二参考磁化率分布信息。S321: Obtain second reference magnetic susceptibility distribution information in the vertical direction from the preset information.
预设信息是指参考磁化率分布信息。第二参考磁化率分布信息是指电池品牌、参数均匹配且是体现在垂直方向上的参考磁化率分布信息，具体可以是磁化率分布场图，当然在其他实施例中磁化率分布信息也可以是以其他形式进行展示。由于同一电池在发生物理缺陷时，由于物理缺陷不同则对应的磁化率分布也不相同，具体可以表现为具有不同的磁化率分布场图。所以步骤S321中所获取的垂直方向上的第二参考磁化率分布信息可以是多个，对应着不同的物理缺陷或者是不同程度的物理缺陷。The preset information refers to reference magnetic susceptibility distribution information. The second reference magnetic susceptibility distribution information refers to the reference magnetic susceptibility distribution information that matches the brand and parameters of the battery and is reflected in the vertical direction. The specific magnetic susceptibility distribution information may be a magnetic susceptibility distribution field map. Of course, in other embodiments, the magnetic susceptibility distribution information may also be used. Is displayed in other forms. When physical defects occur in the same battery, the corresponding magnetic susceptibility distributions are also different due to different physical defects, which can be specifically expressed as having different magnetic susceptibility distribution field maps. Therefore, the second reference magnetic susceptibility distribution information in the vertical direction obtained in step S321 may be multiple, corresponding to different physical defects or different degrees of physical defects.
S322：将第二磁化率分布信息与第二参考磁化率分布信息进行比对，并由 比对结果得到待检测电池的物理缺陷情况。S322: Compare the second magnetic susceptibility distribution information with the second reference magnetic susceptibility distribution information, and obtain the physical defect of the battery to be detected from the comparison result.
第二磁化率分布信息是指通过电池检测装置获取到的待检测电池在垂直方向上的磁化率分布信息，具体可以是待检测电池在垂直方向上的磁化率场分布图。其中，物理缺陷包括：电极折叠、电极缺失和添加碎片中的至少一种，当然，由于在实际的生产中，电池所存在的物理缺陷是多种多样的，故在此并不限定本申请所提供的技术方案仅可以检测上述物理缺陷。The second magnetic susceptibility distribution information refers to magnetic susceptibility distribution information of the battery to be detected in the vertical direction obtained by the battery detection device, and may specifically be a magnetic susceptibility field distribution map of the battery to be detected in the vertical direction. Among them, the physical defects include: at least one of electrode folding, electrode missing, and added debris. Of course, in actual production, there are various physical defects in the battery, so it is not limited here. The technical solution provided can only detect the physical defects mentioned above.
请参见图4，为本申请一种电池检测的方法在又一实施例中的流程示意图。在当前实施例中，可基于本申请所提供的技术方案获取待检测电池在充电或放电过程中的磁化率分布情况，并根据检测所得的磁化率进一步分析电池的充电结果或放电结果，或者是获得电池荷电量与电池磁化率的对应关系。而由于电池本身就具有初始的磁化率，如需要更加准确的获取电池的磁化率信息，则在获取待检测电池的测试磁化率分布信息之前，首先获取待检测电池的基准磁化率分布信息。由图4所示示意图可知，本申请所提供的电池检测方法中，在步骤S110获取待检测电池的测试磁化率分布信息之前，本申请所提供的方法还包括：Please refer to FIG. 4, which is a schematic flowchart of a battery detection method in another embodiment of the present application. In the current embodiment, the magnetic susceptibility distribution of the battery to be tested during charging or discharging can be obtained based on the technical solution provided in the present application, and the charging or discharging result of the battery can be further analyzed according to the magnetic susceptibility obtained from the detection, or Correspondence between battery charge and battery susceptibility is obtained. Since the battery itself has an initial magnetic susceptibility, if it is necessary to obtain the battery susceptibility information more accurately, before obtaining the test magnetic susceptibility distribution information of the battery to be tested, first obtain the reference magnetic susceptibility distribution information of the battery to be tested. As can be seen from the schematic diagram shown in FIG. 4, in the battery detection method provided by the present application, before obtaining the test magnetic susceptibility distribution information of the battery to be detected in step S110, the method provided by the present application further includes:
S401:获取利用磁共振装置对充电前或放电前的待检测电池的基准磁化率分布信息。S401: Obtain reference magnetic susceptibility distribution information of a battery to be detected before charging or discharging using a magnetic resonance device.
其中，基准磁化率分布信息与电池的荷电量，电池氧化还原反应的多少无关，只要将电池放入磁共振装置中(不需要将电池接入任何电路)，即可从磁共振装置中读取得到基准磁化率分布信息。在当前实施例中，基准磁化率与电池本身磁性特性有关，具体表现为基于电池本身磁特性的影响会响应出1-2ppm的变化。Among them, the reference magnetic susceptibility distribution information has nothing to do with the charge capacity of the battery and the amount of redox reaction of the battery. As long as the battery is placed in the magnetic resonance device (no need to connect the battery to any circuit), it can be read from the magnetic resonance device The reference magnetic susceptibility distribution information is obtained. In the current embodiment, the reference magnetic susceptibility is related to the magnetic characteristics of the battery itself, and it is specifically manifested that the influence based on the magnetic characteristics of the battery itself will respond to a change of 1-2 ppm.
S410：获取待检测电池的测试磁化率分布信息。S410: Acquire test magnetic susceptibility distribution information of a battery to be detected.
S420：对测试磁化率分布信息进行分析，得到待检测电池的检测结果。图4所示实施例中，步骤S410和步骤S420分别与图1中的S110与S120相同，具体请参见图1对应的实施例的阐述。S420: Analyze the test magnetic susceptibility distribution information to obtain the detection result of the battery to be detected. In the embodiment shown in FIG. 4, steps S410 and S420 are the same as S110 and S120 in FIG. 1, respectively. For details, refer to the description of the embodiment corresponding to FIG. 1.
其中，需要说明的是，本申请中是基于磁化率分布信息(也可以说是磁化率的变化)进一步分析得到待检测电池的荷电状态信息以及物理缺陷状况的，故如在一实施例中进一步获取了基准磁化率分布信息，则会设置电池分析装置在所得的磁化率分布信息上统一减去基准磁化率分布信息对应的值。如若在一实施例中，没有获取基准磁化率分布信息，由于本申请是基于磁化率的分布信 息(也可称作是磁化率的变化)判断荷电状态的，以及物理缺陷的，故并不影响对电池荷电状态以及物理缺陷的准确判断。It should be noted that, in this application, further analysis is performed based on the magnetic susceptibility distribution information (which can also be said to be the change in magnetic susceptibility) to obtain the state of charge information and physical defect status of the battery to be detected, so as in one embodiment, When the reference magnetic susceptibility distribution information is further obtained, the battery analysis device is set to uniformly subtract the value corresponding to the reference magnetic susceptibility distribution information from the obtained magnetic susceptibility distribution information. For example, if the reference magnetic susceptibility distribution information is not obtained in one embodiment, since the present application determines the state of charge and physical defects based on the magnetic susceptibility distribution information (also referred to as the change in magnetic susceptibility), it does not Affects the accurate judgment of the battery's state of charge and physical defects.
对应的，请参见图5，为本申请一种电池检测方法在又一实施例中的流程示意图。由图4所示的实施例中可知，在获取待检测电池的测试磁化率分布信息之前还会进一步获取待检测电池的基准磁化率分布信息，则在当前实施例中，步骤S110获取待检测电池的测试磁化率分布信息则包括：Correspondingly, please refer to FIG. 5, which is a schematic flowchart of a battery detection method in another embodiment of the present application. It can be known from the embodiment shown in FIG. 4 that before obtaining the test magnetic susceptibility distribution information of the battery to be tested, the reference magnetic susceptibility distribution information of the battery to be tested is further obtained. In the current embodiment, step S110 is to obtain the battery to be tested. The test magnetic susceptibility distribution information includes:
S501：获取利用磁共振装置对充电后或放电后的待检测电池初始的测试磁化率分布信息。S501: Obtain initial test magnetic susceptibility distribution information of a battery to be tested after being charged or discharged using a magnetic resonance device.
在一实施例中，在待检测电池完成充电并静置预设时间后，获取利用磁共振装置对充电后的待检测电池初始的测试磁化率分布信息。当然在其他实施例中，步骤S501也可以是在充电过程中获取待检测电池初始的测试磁化率分布信息。又或是在待检测电池按照预设规则放电后或者是放电预设时间后，获取利用磁共振装置对充电后的待检测电池初始的测试磁化率分布信息。In one embodiment, after the battery to be tested is fully charged and left for a preset time, initial test magnetic susceptibility distribution information of the battery to be tested after charging is obtained using a magnetic resonance device. Of course, in other embodiments, step S501 may also be obtaining the initial test magnetic susceptibility distribution information of the battery to be detected during the charging process. Or, after the battery to be tested is discharged according to a preset rule or after a preset time of discharge, the initial test magnetic susceptibility distribution information of the battery to be tested after being charged by the magnetic resonance device is acquired.
S502：将初始测试磁化率分布信息中的磁化率对应减去基准磁化率分布信息中的磁化率，得到待检测电池最终的测试磁化率分布信息。S502: Correspond to the susceptibility in the initial test susceptibility distribution information by subtracting the susceptibility in the reference susceptibility distribution information to obtain the final test susceptibility distribution information of the battery to be tested.
在一实施例中，是由电池检测装置自动在所获取的初始的测试磁化率分布信息中对应减去基准磁化率分布信息中的磁化率，得到待检测电池最终的测试磁化率分布信息。由此可以得知，待检测电池最终的测试磁化率分布信息为去除了基准磁化率分布信息中的磁化率的信息。In one embodiment, the battery testing device automatically subtracts the magnetic susceptibility in the reference magnetic susceptibility distribution information from the obtained initial test magnetic susceptibility distribution information to obtain the final test magnetic susceptibility distribution information of the battery to be tested. It can be known from this that the final test magnetic susceptibility distribution information of the battery to be tested is information obtained by removing the magnetic susceptibility from the reference magnetic susceptibility distribution information.
由上述阐述可知，本申请所提供的电池检测方法主要是基于磁化率变化判断待检测电池的荷电状态，故是否减去基准磁化率分布信息中的磁化率并不影响对电池荷电状态的判断以及电池物理缺陷的判断。故在其他实施例中，还可以由用户手动选择是否需要在初始测试磁化率分布信息中的磁化率对应减去基准磁化率分布信息中的磁化率。From the above explanation, it can be known that the battery detection method provided in the present application mainly determines the state of charge of the battery to be detected based on the change in magnetic susceptibility, so whether to subtract the susceptibility from the reference susceptibility distribution information does not affect the state of charge of the battery Judgment and judgment of battery physical defects. Therefore, in other embodiments, the user may also manually select whether or not the magnetic susceptibility in the initial test magnetic susceptibility distribution information should be subtracted from the magnetic susceptibility in the reference magnetic susceptibility distribution information.
请参见图6，为一实施例中，采用本申请所提供的技术方案对一待检测电池放电过程检测分析时，所测得待检测电池在水平方向上磁化率分布场图的效果示意图。由图6可知，随着电池放电量的增多，即由图6中的图①依次至图⑤，该待检测电池的磁化率在逐渐降低，故结合电池荷电量与磁化率的一一对应的关系和准确判断电池的荷电状态。Please refer to FIG. 6, which is a schematic diagram showing the effect of a magnetic field distribution field diagram of the battery to be tested in the horizontal direction when the technical solution provided in the present application is used to detect and analyze the discharging process of the battery to be tested in an embodiment. It can be known from FIG. 6 that as the battery discharge capacity increases, that is, from ① to ⑤ in FIG. 6, the magnetic susceptibility of the battery to be tested is gradually decreasing, so the one-to-one correspondence between the battery charge and the magnetic susceptibility Relationship and accurately determine the state of charge of the battery.
对于采用本申请所提供的技术方案检测电池是否存在物理缺陷情况，请参见图7。图7是本申请一种电池检测方法在一实施例中，所测得的待检测电池在 垂直方向(电池电极方向)上的磁化率分布场图的效果示意图。For detecting whether a battery has a physical defect by using the technical solution provided in this application, please refer to FIG. 7. Fig. 7 is a schematic view showing the effect of a magnetic field distribution field map of a battery to be tested in a vertical direction (battery electrode direction) in an embodiment of a battery testing method of the present application.
具体的，图7中的①和⑤均是电池不存在物理缺陷下的磁化率分布场图，即该待检测电池不存在物理缺陷时的磁化率分布均匀且较接近零。图7中的②和⑥均是在电池的电极发生折叠时的磁化率分布场图，由此可知该待检测电池发生电极折叠时，磁化率呈现垂直方向上的一端磁化率异常高，中间部分则会异常小。图7中的图③和图⑦是电池的电极缺失的情况下的磁化率分布场图，由图可知，此时的电池在垂直方向上的磁化率比较均匀且均大于零。图7中④和⑧是在该待检测电池中存在异物(不属于电池组成的部分物质，如碎片)时测得的磁化率分布场图，由图可知，此时电池的磁化率分布在垂直方向上出现两个区域非常接近零值。Specifically, ① and ⑤ in FIG. 7 are magnetic susceptibility distribution field diagrams when the battery is free of physical defects, that is, the magnetic susceptibility distribution of the battery to be tested without physical defects is uniform and close to zero. Both ② and ⑥ in Fig. 7 are magnetic susceptibility distribution field diagrams when the electrodes of the battery are folded. It can be seen that when the electrode of the battery to be tested is folded, the magnetic susceptibility is abnormally high at one end in the vertical direction, and the middle part It will be unusually small. Figures ③ and ⑦ in FIG. 7 are magnetic susceptibility distribution field diagrams when the battery electrodes are missing. It can be seen from the figure that the magnetic susceptibility of the battery in the vertical direction is relatively uniform and both are greater than zero. ④ and ⑧ in FIG. 7 are magnetic field distribution field diagrams measured when there is a foreign substance (some substances that are not part of the battery, such as debris) in the battery to be tested. As can be seen from the figure, the magnetic susceptibility distribution of the battery is vertical Two areas in the direction appear very close to zero.
需要说明的是，图6和图7所示的磁化率分布场图仅是对某一实施例中某一种电池测试所得结果示意图，在实际的测试中，具体的电池依据其对应的参考参考磁化率分布信息以及实际测得磁化率分布信息为准，在此不再一一详述。It should be noted that the magnetic susceptibility distribution field diagrams shown in FIG. 6 and FIG. 7 are only schematic diagrams of the results obtained by testing a certain type of battery in an embodiment. In actual testing, specific batteries are based on their corresponding reference references. The magnetic susceptibility distribution information and the actual measured magnetic susceptibility distribution information shall prevail, which will not be detailed one by one here.
请参见图8，为本申请一种电池分析装置800在一实施例中的结构示意图。电池分析装置800包括：存储器802和处理器801。其中，存储器802用于存储程序数据，存储器802所存储的程序数据被执行时可实现如图1至图5所示的电池检测方法及各个实施例。处理器801用于运行存储器802中所存储的程序数据，以执行如上图1至图5所示意的方法及其对应的各个实施例。Please refer to FIG. 8, which is a schematic structural diagram of a battery analysis device 800 according to an embodiment of the present application. The battery analysis device 800 includes a memory 802 and a processor 801. The memory 802 is configured to store program data. When the program data stored in the memory 802 is executed, the battery detection method and various embodiments shown in FIG. 1 to FIG. 5 can be implemented. The processor 801 is configured to run the program data stored in the memory 802 to execute the method illustrated in FIG. 1 to FIG. 5 above and corresponding embodiments.
在一实施例中，本申请所提供的电池分析装置800包括：个人计算机。可以理解的，本申请所提供的电池分析装置800并不只限定为个人计算机，还可以是其他任何可以执行图1至图7所对应的程序数据的终端设备。In one embodiment, the battery analysis device 800 provided in the present application includes a personal computer. It can be understood that the battery analysis device 800 provided in the present application is not limited to a personal computer, and may be any other terminal device that can execute the program data corresponding to FIG. 1 to FIG. 7.
请参见图9，为本申请一种电池检测***900在一实施例中的结构示意图。本申请所提供的电池检测***包括：电池检测装置901，以及与电池检测装置901连接的电池分析装置902。Please refer to FIG. 9, which is a schematic structural diagram of a battery detection system 900 in an embodiment of the present application. The battery detection system provided in this application includes a battery detection device 901 and a battery analysis device 902 connected to the battery detection device 901.
其中，电池检测装置901用于检测待检测电池的磁化率以得到测试磁化率分布信息，并输出至电池分析装置902。The battery detection device 901 is configured to detect the magnetic susceptibility of the battery to be detected to obtain test magnetic susceptibility distribution information, and output the information to the battery analysis device 902.
电池分析装置902为如图8所示的装置，用于基于电池检测装置901输出的测试磁化率分布信息，进一步分析待检测电池的检测结果。可以理解的，在其他实施例中，电池检测装置901与电池分析装置902可以集成至一个装置上，实现将电池检测功能与电池分析功能集成至同一装置。The battery analysis device 902 is a device as shown in FIG. 8, and is configured to further analyze the detection result of the battery to be detected based on the test magnetic susceptibility distribution information output by the battery detection device 901. It can be understood that, in other embodiments, the battery detection device 901 and the battery analysis device 902 may be integrated into one device, so that the battery detection function and the battery analysis function are integrated into the same device.
进一步的，在其他实施例中，电池检测***900除电池检测装置901、电池 分析装置902外，还包括电池充放电设备(图未示)。电池充放电设备用于为待检测电池进行充电或放电，以实现按照设定的规则为待检测电池进行充电，或者是按照预设的规则对待检测电池进行放电处理以使得待检测电池自原有荷电状态转换至某一荷电状态。Further, in other embodiments, the battery detection system 900 includes a battery charging and discharging device (not shown) in addition to the battery detection device 901 and the battery analysis device 902. The battery charging and discharging device is used for charging or discharging the battery to be tested, so as to charge the battery to be tested according to a set rule, or to discharge the battery to be tested according to a preset rule, so that the battery to be tested can be replaced from the original one. The state of charge is changed to a certain state of charge.
参见图10，本申请还提供一种存储介质1000。该存储介质1000存储有程序数据1001，该程序数据1001被执行时实现如上所述电池检测方法及各个实施例中所描述的方法。具体的，上述具有存储功能的存储介质1000可以是存储器、个人计算机、服务器、网络设备，或者U盘等其中的一种。Referring to FIG. 10, the present application further provides a storage medium 1000. The storage medium 1000 stores program data 1001. When the program data 1001 is executed, the battery detection method described above and the methods described in various embodiments are implemented. Specifically, the storage medium 1000 having a storage function may be one of a memory, a personal computer, a server, a network device, or a USB flash drive.
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。The above description is only an implementation of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the application, or directly or indirectly applied to other related technologies The fields are equally covered by the patent protection scope of this application.

Claims (10)

  1. 一种电池检测方法，其特征在于，所述方法包括：A battery detection method, characterized in that the method includes:
    获取待检测电池的测试磁化率分布信息；Obtaining test magnetic susceptibility distribution information of a battery to be tested;
    对所述测试磁化率分布信息进行分析，得到所述待检测电池的检测结果，其中，所述检测结果包括荷电状态和/或物理缺陷情况。The test magnetic susceptibility distribution information is analyzed to obtain a test result of the battery to be tested, wherein the test result includes a state of charge and / or a physical defect.
  2. 根据权利要求1所述的电池检测方法，其特征在于，所述对所述测试磁化率分布信息进行分析，得到所述待检测电池的检测结果，包括：The battery testing method according to claim 1, wherein the analyzing the test magnetic susceptibility distribution information to obtain a detection result of the battery to be tested comprises:
    将所述测试磁化率分布信息与参考磁化率分布信息进行比对，并由比对结果得到所述待检测电池的检测结果。The test magnetic susceptibility distribution information is compared with the reference magnetic susceptibility distribution information, and the detection result of the battery to be detected is obtained from the comparison result.
  3. 根据权利要求2所述的电池检测方法，所述检测结果包括荷电状态，所述测试磁化率分布信息包括：所述待检测电池在水平方向上的第一测试磁化率分布场图；The battery detection method according to claim 2, wherein the detection result includes a state of charge, and the test magnetic susceptibility distribution information includes: a first test magnetic susceptibility distribution field map of the battery to be detected in a horizontal direction;
    所述将所述测试磁化率分布信息与参考磁化率分布信息进行比对，并由比对结果得到所述待检测电池的检测结果的步骤包括：The step of comparing the test magnetic susceptibility distribution information with the reference magnetic susceptibility distribution information and obtaining the detection result of the battery to be detected from the comparison result includes:
    从预设信息中查找到与所述待检测电池的特征参数匹配的在水平方向的多个第一参考磁化率分布场图；Finding a plurality of first reference magnetic susceptibility distribution field maps in the horizontal direction that match the characteristic parameters of the battery to be detected from the preset information;
    从所述多个第一参考磁化率分布场图中，查找到与所述第一测试磁化率分布场图最匹配的第一参考磁化率分布场图；Find, from the plurality of first reference magnetic susceptibility distribution field maps, a first reference magnetic susceptibility distribution field map that best matches the first test magnetic susceptibility distribution field map;
    利用所述最匹配的第一参考磁化率分布场图对应的荷电量确定所述待检测电池的荷电状态。The state of charge of the battery to be detected is determined by using the amount of charge corresponding to the best-matched first reference magnetic susceptibility distribution field diagram.
  4. 根据权利要求3所述的电池检测方法，所述荷电状态包括待检测电池的剩余荷电量和/或荷电容量是否正常；The battery detection method according to claim 3, wherein the state of charge includes whether the remaining charge capacity and / or the charge capacity of the battery to be detected are normal;
    所述利用所述最匹配的第一参考磁化率分布场图对应的荷电量确定所述待检测电池的荷电状态，包括：The determining the state of charge of the battery to be detected by using the amount of charge corresponding to the best-matched first reference susceptibility distribution field diagram includes:
    将所述最匹配的第一参考磁化率分布场图对应的荷电量作为所述待检测电池的剩余荷电量；和/或Using the charge capacity corresponding to the best matched first reference susceptibility distribution field map as the remaining charge capacity of the battery to be detected; and / or
    基于所得的所述荷电量与预设荷电量阈值进行比对，以判断所述待检测电池的荷电容量是否正常。A comparison is performed based on the obtained charge capacity and a preset charge capacity threshold to determine whether the charge capacity of the battery to be detected is normal.
  5. 根据权利要求2所述的电池检测方法，其特征在于，所述检测结果包括健康状态；所述测试磁化率分布信息包括：所述待检测电池在垂直方向上的第 二测试磁化率分布场图；The battery testing method according to claim 2, wherein the detection result includes a health state; and the test magnetic susceptibility distribution information includes: a second test magnetic susceptibility distribution field map of the battery to be tested in a vertical direction ;
    所述将所述测试磁化率分布信息与参考磁化率分布信息进行比对，并由比对结果得到所述待检测电池的检测结果的步骤具体包括：The step of comparing the test magnetic susceptibility distribution information with the reference magnetic susceptibility distribution information, and obtaining the detection result of the battery to be detected from the comparison result specifically includes:
    从预设信息中获取垂直方向上的第二参考磁化率分布信息；Obtaining the second reference magnetic susceptibility distribution information in the vertical direction from the preset information;
    将所述第二磁化率分布信息与所述第二参考磁化率分布信息进行比对，并由比对结果得到所述待检测电池的物理缺陷情况；Comparing the second magnetic susceptibility distribution information with the second reference magnetic susceptibility distribution information, and obtaining the physical defect condition of the battery to be detected from the comparison result;
    其中，所述物理缺陷包括：电极折叠、电极缺失和添加碎片中的至少一种。Wherein, the physical defect includes at least one of electrode folding, electrode missing, and adding debris.
  6. 根据权利要求1所述的电池检测方法，其特征在于，在所述获取待检测电池的测试磁化率分布信息之前，所述方法还包括：The battery testing method according to claim 1, wherein before the acquiring the test magnetic susceptibility distribution information of the battery to be tested, the method further comprises:
    获取利用磁共振装置对充电前或放电前的待检测电池的基准磁化率分布信息；Obtaining reference magnetic susceptibility distribution information of a battery to be tested before charging or discharging using a magnetic resonance device;
    所述获取待检测电池的测试磁化率分布信息包括：The obtaining test magnetic susceptibility distribution information of a battery to be tested includes:
    获取利用磁共振装置对充电后或放电后的所述待检测电池初始的测试磁化率分布信息；Acquiring initial test magnetic susceptibility distribution information of the battery to be tested after being charged or discharged using a magnetic resonance device;
    将所述初始测试磁化率分布信息中的磁化率对应减去所述基准磁化率分布信息中的磁化率，得到所述待检测电池最终的测试磁化率分布信息。The susceptibility in the initial test susceptibility distribution information is correspondingly subtracted from the reference susceptibility distribution information to obtain the final test susceptibility distribution information of the battery to be tested.
  7. 根据权利要求1所述的电池检测方法，其特征在于，The battery detection method according to claim 1, wherein:
    所述测试磁化率分布信息是在所述待检测电池按预设充电规则完成充电并静置预设时间后或按照预设规则进行放电后检测得到的。The test magnetic susceptibility distribution information is obtained after the battery to be tested is fully charged according to a preset charging rule and left to stand for a preset time or after being discharged according to a preset rule.
  8. 一种电池分析装置，其特征在于，所述分析装置包括：存储器和处理器，所述存储器用于存储程序数据，所述处理器用于运行所述程序数据以执行如权利要求1至7任一项所述的方法。A battery analysis device, characterized in that the analysis device includes a memory and a processor, the memory is configured to store program data, and the processor is configured to run the program data to execute any one of claims 1 to 7. Item.
  9. 一种电池检测***，其特征在于，所述***包括：电池检测装置，以及与电池检测装置连接的电池分析装置；A battery detection system, characterized in that the system includes a battery detection device and a battery analysis device connected to the battery detection device;
    所述电池检测装置用于检测所述待检测电池的磁化率以得到测试磁化率分布信息，并输出至所述电池分析装置；The battery detection device is configured to detect the magnetic susceptibility of the battery to be detected to obtain test magnetic susceptibility distribution information, and output the information to the battery analysis device;
    所述电池分析装置为如权利要求8所述的装置，用于基于所述电池检测装置输出的所述测试磁化率分布信息，进一步分析所述待检测电池的检测结果。The battery analysis device is a device according to claim 8, configured to further analyze a detection result of the battery to be detected based on the test magnetic susceptibility distribution information output by the battery detection device.
  10. 根据权利要求9所述的电池检测***，其特征在于，所述***还包括：电池充放电设备，所述电池充放电设备用于为所述待检测电池充电或放电。The battery detection system according to claim 9, further comprising: a battery charging and discharging device, wherein the battery charging and discharging device is used to charge or discharge the battery to be tested.
PCT/CN2018/095671 2018-07-13 2018-07-13 Battery testing method and system, and battery analysis device WO2020010624A1 (en)

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