CN114895205A - Method, device, computer equipment, and storage medium for acquiring battery model parameters - Google Patents
Method, device, computer equipment, and storage medium for acquiring battery model parametersDownload PDFInfo
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- 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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- 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]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- 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]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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Abstract
Description
Translated fromChinese技术领域technical field
本申请涉及新能源电池技术领域，特别是涉及一种电池模型参数的获取方法、装置、计算机设备、存储介质和计算机程序产品。The present application relates to the technical field of new energy batteries, and in particular, to a method, device, computer equipment, storage medium and computer program product for acquiring battery model parameters.
背景技术Background technique
随着新能源电池技术的发展，为了对电池的性能进行评估，需要对待评估的电池进行仿真建模。其中，在对电池进行建模的过程中，需要获取电池模型的参数。With the development of new energy battery technology, in order to evaluate the performance of the battery, it is necessary to simulate and model the battery to be evaluated. Among them, in the process of modeling the battery, the parameters of the battery model need to be obtained.
在传统技术中，为了获取电池模型的参数，可以采用HPPC(The Hybrid PulsePower Characterization，混合脉冲功率性能测试)测试获取。其中，在HPPC测试的过程中，为了节省测试时间，常常在相同的SOC(State Of Charge，电荷状态)间隔采集数据。这会导致采集的数据过少，无法准确的获得电池模型的参数，从而，大大降低了对电池模型参数获取的准确性。In the traditional technology, in order to obtain the parameters of the battery model, HPPC (The Hybrid PulsePower Characterization, hybrid pulse power performance test) test can be used to obtain the parameters. Among them, in the process of HPPC testing, in order to save testing time, data is often collected at the same SOC (State Of Charge, state of charge) interval. This will result in that the collected data is too small, and the parameters of the battery model cannot be accurately obtained, thereby greatly reducing the accuracy of obtaining the parameters of the battery model.
发明内容SUMMARY OF THE INVENTION
基于此，有必要针对上述技术问题，提供一种电池模型参数的获取方法、装置、计算机设备、计算机可读存储介质和计算机程序产品。Based on this, it is necessary to provide a method, an apparatus, a computer device, a computer-readable storage medium, and a computer program product for obtaining battery model parameters in response to the above technical problems.
第一方面，本申请提供了一种电池模型参数的获取方法。所述方法包括：In a first aspect, the present application provides a method for acquiring battery model parameters. The method includes:
基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，确定各个温度分别对应的目标测试曲线；其中，所述目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况；Based on the test curves obtained by performing multiple tests on the target battery at different temperatures by the charging and discharging equipment, the target test curves corresponding to the respective temperatures are determined; wherein, the target test curves represent the variation of the voltage with the change of the state of charge during the test process. Happening;
对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据；For each temperature, identify the curve slope of the target test curve corresponding to the corresponding temperature, and obtain the curve slope data corresponding to the target test curve at the corresponding temperature;
对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，所述电荷状态间隔表征脉冲测试过程中电荷状态的调整值；For each temperature, the charge state interval corresponding to the target test curve at the corresponding temperature is determined based on the curve slope data corresponding to the target test curve at the corresponding temperature, wherein the charge state interval represents the adjustment value of the charge state during the pulse test process ;
对于每个温度，确定与相应温度对应的多个脉冲电流，并基于所述相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，所述脉冲时间用于指示所述充放电设备进行脉冲测试；For each temperature, a plurality of pulse currents corresponding to the corresponding temperature are determined, and based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, the pulse time at the corresponding temperature is determined, and the pulse time is used to indicate The charging and discharging equipment is subjected to a pulse test;
获取经充放电设备基于所述脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，所述电压变化曲线表征电压随脉冲电流和时间的变化情况；Acquiring voltage variation curves corresponding to each temperature obtained by the charging and discharging equipment performing pulse testing on the target battery based on the pulse time, and the voltage variation curves representing the variation of voltage with pulse current and time;
基于所述与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与所述目标电池对应的电池模型的参数。Based on the voltage change curves corresponding to the respective temperatures, parameter fitting is performed through a pre-built equivalent circuit model to obtain parameters of the battery model corresponding to the target battery.
第二方面，本申请还提供了一种电池模型参数的获取装置。所述装置包括：In a second aspect, the present application also provides a device for acquiring battery model parameters. The device includes:
基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，确定各个温度分别对应的目标测试曲线；其中，所述目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况；Based on the test curves obtained by performing multiple tests on the target battery at different temperatures by the charging and discharging equipment, the target test curves corresponding to the respective temperatures are determined; wherein, the target test curves represent the variation of the voltage with the change of the state of charge during the test process. Happening;
对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据；For each temperature, identify the curve slope of the target test curve corresponding to the corresponding temperature, and obtain the curve slope data corresponding to the target test curve at the corresponding temperature;
对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，所述电荷状态间隔表征脉冲测试过程中电荷状态的调整值；For each temperature, the charge state interval corresponding to the target test curve at the corresponding temperature is determined based on the curve slope data corresponding to the target test curve at the corresponding temperature, wherein the charge state interval represents the adjustment value of the charge state during the pulse test process ;
对于每个温度，确定与相应温度对应的多个脉冲电流，并基于所述相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，所述脉冲时间用于指示所述充放电设备进行脉冲测试；For each temperature, a plurality of pulse currents corresponding to the corresponding temperature are determined, and based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, the pulse time at the corresponding temperature is determined, and the pulse time is used to indicate The charging and discharging equipment is subjected to a pulse test;
获取经充放电设备基于所述脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，所述电压变化曲线表征电压随脉冲电流和时间的变化情况；Acquiring voltage variation curves corresponding to each temperature obtained by the charging and discharging equipment performing pulse testing on the target battery based on the pulse time, and the voltage variation curves representing the variation of voltage with pulse current and time;
基于所述与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与所述目标电池对应的电池模型的参数。Based on the voltage change curves corresponding to the respective temperatures, parameter fitting is performed through a pre-built equivalent circuit model to obtain parameters of the battery model corresponding to the target battery.
第三方面，本申请还提供了一种计算机设备。所述计算机设备包括存储器和处理器，所述存储器存储有计算机程序，所述处理器执行所述计算机程序时实现以下步骤：In a third aspect, the present application also provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:
基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，确定各个温度分别对应的目标测试曲线；其中，所述目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况；Based on the test curves obtained by performing multiple tests on the target battery at different temperatures by the charging and discharging equipment, the target test curves corresponding to the respective temperatures are determined; wherein, the target test curves represent the variation of the voltage with the change of the state of charge during the test process. Happening;
对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据；For each temperature, identify the curve slope of the target test curve corresponding to the corresponding temperature, and obtain the curve slope data corresponding to the target test curve at the corresponding temperature;
对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，所述电荷状态间隔表征脉冲测试过程中电荷状态的调整值；For each temperature, the charge state interval corresponding to the target test curve at the corresponding temperature is determined based on the curve slope data corresponding to the target test curve at the corresponding temperature, wherein the charge state interval represents the adjustment value of the charge state during the pulse test process ;
对于每个温度，确定与相应温度对应的多个脉冲电流，并基于所述相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，所述脉冲时间用于指示所述充放电设备进行脉冲测试；For each temperature, a plurality of pulse currents corresponding to the corresponding temperature are determined, and based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, the pulse time at the corresponding temperature is determined, and the pulse time is used to indicate The charging and discharging equipment is subjected to a pulse test;
获取经充放电设备基于所述脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，所述电压变化曲线表征电压随脉冲电流和时间的变化情况；Acquiring voltage variation curves corresponding to each temperature obtained by the charging and discharging equipment performing pulse testing on the target battery based on the pulse time, and the voltage variation curves representing the variation of voltage with pulse current and time;
基于所述与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与所述目标电池对应的电池模型的参数。Based on the voltage change curves corresponding to the respective temperatures, parameter fitting is performed through a pre-built equivalent circuit model to obtain parameters of the battery model corresponding to the target battery.
第四方面，本申请还提供了一种计算机可读存储介质。所述计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现以下步骤：In a fourth aspect, the present application also provides a computer-readable storage medium. The computer-readable storage medium has a computer program stored thereon, and when the computer program is executed by the processor, the following steps are implemented:
基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，确定各个温度分别对应的目标测试曲线；其中，所述目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况；Based on the test curves obtained by performing multiple tests on the target battery at different temperatures by the charging and discharging equipment, the target test curves corresponding to the respective temperatures are determined; wherein, the target test curves represent the variation of the voltage with the change of the state of charge during the test process. Happening;
对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据；For each temperature, identify the curve slope of the target test curve corresponding to the corresponding temperature, and obtain the curve slope data corresponding to the target test curve at the corresponding temperature;
对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，所述电荷状态间隔表征脉冲测试过程中电荷状态的调整值；For each temperature, the charge state interval corresponding to the target test curve at the corresponding temperature is determined based on the curve slope data corresponding to the target test curve at the corresponding temperature, wherein the charge state interval represents the adjustment value of the charge state during the pulse test process ;
对于每个温度，确定与相应温度对应的多个脉冲电流，并基于所述相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，所述脉冲时间用于指示所述充放电设备进行脉冲测试；For each temperature, a plurality of pulse currents corresponding to the corresponding temperature are determined, and based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, the pulse time at the corresponding temperature is determined, and the pulse time is used to indicate The charging and discharging equipment is subjected to a pulse test;
获取经充放电设备基于所述脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，所述电压变化曲线表征电压随脉冲电流和时间的变化情况；Acquiring voltage variation curves corresponding to each temperature obtained by the charging and discharging equipment performing pulse testing on the target battery based on the pulse time, and the voltage variation curves representing the variation of voltage with pulse current and time;
基于所述与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与所述目标电池对应的电池模型的参数。Based on the voltage change curves corresponding to the respective temperatures, parameter fitting is performed through a pre-built equivalent circuit model to obtain parameters of the battery model corresponding to the target battery.
第五方面，本申请还提供了一种计算机程序产品。所述计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现以下步骤：In a fifth aspect, the present application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the following steps:
基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，确定各个温度分别对应的目标测试曲线；其中，所述目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况；Based on the test curves obtained by performing multiple tests on the target battery at different temperatures by the charging and discharging equipment, the target test curves corresponding to the respective temperatures are determined; wherein, the target test curves represent the variation of the voltage with the change of the state of charge during the test process. Happening;
对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据；For each temperature, identify the curve slope of the target test curve corresponding to the corresponding temperature, and obtain the curve slope data corresponding to the target test curve at the corresponding temperature;
对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，所述电荷状态间隔表征脉冲测试过程中电荷状态的调整值；For each temperature, the charge state interval corresponding to the target test curve at the corresponding temperature is determined based on the curve slope data corresponding to the target test curve at the corresponding temperature, wherein the charge state interval represents the adjustment value of the charge state during the pulse test process ;
对于每个温度，确定与相应温度对应的多个脉冲电流，并基于所述相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，所述脉冲时间用于指示所述充放电设备进行脉冲测试；For each temperature, a plurality of pulse currents corresponding to the corresponding temperature are determined, and based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, the pulse time at the corresponding temperature is determined, and the pulse time is used to indicate The charging and discharging equipment is subjected to a pulse test;
获取经充放电设备基于所述脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，所述电压变化曲线表征电压随脉冲电流和时间的变化情况；Acquiring voltage variation curves corresponding to each temperature obtained by the charging and discharging equipment performing pulse testing on the target battery based on the pulse time, and the voltage variation curves representing the variation of voltage with pulse current and time;
基于所述与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与所述目标电池对应的电池模型的参数。Based on the voltage change curves corresponding to the respective temperatures, parameter fitting is performed through a pre-built equivalent circuit model to obtain parameters of the battery model corresponding to the target battery.
上述电池模型参数的获取方法、装置、计算机设备、存储介质和计算机程序产品，通过基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，能够从多次测试中确定真实度和准确性高的各个温度分别对应的目标测试曲线；其中，该目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况。对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据。这样，能够清晰反映出充放电过程中曲线变化是否平缓。对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，该电荷状态间隔表征脉冲测试过程中电荷状态的调整值。这样，根据目标测试曲线所表征的曲线变化情况，能够快速且有效的确定与曲线变化情况相匹配的电荷状态的调整值，大大节省了后续参数确定过程的时间成本。对于每个温度，确定与相应温度对应的多个脉冲电流，并基于该相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，该脉冲时间用于指示该充放电设备进行脉冲测试。这样，通过能够实时反映用于脉冲测试的脉冲时间。获取经充放电设备基于该脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，该电压变化曲线表征电压随脉冲电流和时间的变化情况。基于该与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与该目标电池对应的电池模型的参数。这样，在节省时间的前提下，能够得到准确性高的电池模型的参数，大大增加了对电池模型参数的准确性。The acquisition method, device, computer equipment, storage medium and computer program product of the above battery model parameters can obtain a test curve based on multiple tests of the target battery at different temperatures based on the charging and discharging equipment, and can determine the true value from the multiple tests. The target test curve corresponding to each temperature with high degree and accuracy respectively; wherein, the target test curve represents the change of the voltage with the change of the state of charge during the test process. For each temperature, the curve slope identification is performed on the target test curve corresponding to the corresponding temperature, and the curve slope data corresponding to the target test curve at the corresponding temperature is obtained. In this way, it can clearly reflect whether the curve change is gentle during the charging and discharging process. For each temperature, a charge state interval corresponding to the target test curve at the corresponding temperature is determined based on the curve slope data corresponding to the target test curve at the corresponding temperature, wherein the charge state interval represents the adjusted value of the charge state during the pulse test. In this way, according to the curve change condition represented by the target test curve, the adjustment value of the charge state matching the curve change condition can be quickly and effectively determined, which greatly saves the time cost of the subsequent parameter determination process. For each temperature, a plurality of pulse currents corresponding to the corresponding temperature are determined, and based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, the pulse time at the corresponding temperature is determined, and the pulse time is used to indicate the charge state. Discharge equipment for pulse testing. In this way, the pulse time used for the pulse test can be reflected in real time. Obtain the voltage variation curves corresponding to each temperature obtained by the charging and discharging equipment performing pulse testing on the target battery based on the pulse time, and the voltage variation curves represent the variation of the voltage with the pulse current and time. Based on the voltage change curves corresponding to the respective temperatures, parameters of the battery model corresponding to the target battery are obtained by performing parameter fitting through a pre-built equivalent circuit model. In this way, under the premise of saving time, the parameters of the battery model with high accuracy can be obtained, which greatly increases the accuracy of the parameters of the battery model.
附图说明Description of drawings
图1为一个实施例中电池模型参数的获取方法的应用环境图；1 is an application environment diagram of a method for obtaining battery model parameters in one embodiment;
图2为一个实施例中电池模型参数的获取方法的流程示意图；2 is a schematic flowchart of a method for acquiring battery model parameters in one embodiment;
图3为一个实施例中目标放电曲线示意图；3 is a schematic diagram of a target discharge curve in one embodiment;
图4为一个实施例中脉冲电流、电荷状态、电压曲线示意图；4 is a schematic diagram of pulse current, state of charge, and voltage curves in one embodiment;
图5为一个实施例中等效电路模型示意图；5 is a schematic diagram of an equivalent circuit model in one embodiment;
图6为一个实施例中确定目标测试曲线步骤的流程示意图；6 is a schematic flowchart of a step of determining a target test curve in one embodiment;
图7为一个实施例中确定曲线斜率数据步骤的流程示意图；7 is a schematic flowchart of steps of determining curve slope data in one embodiment;
图8为一个实施例中一阶导数曲线示意图；8 is a schematic diagram of a first-order derivative curve in one embodiment;
图9为一个实施例中试验数据对比示意图；Fig. 9 is a schematic diagram of test data comparison in one embodiment;
图10为一个实施例中电池模型参数的获取装置的结构框图；10 is a structural block diagram of an apparatus for acquiring battery model parameters in one embodiment;
图11为一个实施例中计算机设备的内部结构图。Figure 11 is a diagram of the internal structure of a computer device in one embodiment.
具体实施方式Detailed ways
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.
本申请实施例提供的电池模型参数的获取方法，可以应用于如图1所示的应用环境中。其中，充放电设备102通过网络与计算机设备104进行通信。数据存储系统可以存储计算机设备104需要处理的数据。数据存储系统可以集成在计算机设备104上，也可以放在云上或其他网络服务器上。基于经充放电设备102在不同温度下对目标电池进行多次测试而得到测试曲线，计算机设备104确定各个温度分别对应的目标测试曲线；其中，该目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况。对于每个温度，计算机设备104对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据。对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，计算机设备104确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，该电荷状态间隔表征脉冲测试过程中电荷状态的调整值。对于每个温度，确定与相应温度对应的多个脉冲电流，并基于该相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，该脉冲时间用于指示该充放电设备102进行脉冲测试。计算机设备104获取经充放电设备102基于该脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，该电压变化曲线表征电压随脉冲电流和时间的变化情况。基于该与各个温度分别对应的电压变化曲线，计算机设备104通过预先构建的等效电路模型进行参数拟合，得到与该目标电池对应的电池模型的参数。其中，充放电设备102可以是具有充电功能和放电功能的电子测量设备。计算机设备104确可以是终端或者服务器。其中，终端可以但不限于是各种个人计算机、笔记本电脑、智能手机、平板电脑、物联网设备和便携式可穿戴设备，物联网设备可为智能音箱、智能电视、智能空调、智能车载设备等。便携式可穿戴设备可为智能手表、智能手环、头戴设备等。服务器可以用独立的服务器或者是多个服务器组成的服务器集群来实现。The method for acquiring battery model parameters provided by the embodiments of the present application can be applied to the application environment shown in FIG. 1 . The charging and discharging
在一个实施例中，如图2所示，提供了一种电池模型参数的获取方法，以该方法应用于图1中的计算机设备为例进行说明，包括以下步骤：In one embodiment, as shown in FIG. 2 , a method for obtaining battery model parameters is provided, and the method is applied to the computer device in FIG. 1 as an example for description, including the following steps:
步骤S202，基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，确定各个温度分别对应的目标测试曲线；其中，该目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况。Step S202, based on the test curves obtained by performing multiple tests on the target battery at different temperatures by the charging and discharging equipment, determine the target test curves corresponding to each temperature respectively; wherein, the target test curve represents the change of the voltage with the change of the state of charge during the test process. changing circumstances.
其中，充放电设备是一种电子测量仪器，可以对电池进行充放电测试。其中，测试曲线可以为充电过程的充电测试曲线、或者为放电过程的放电测试曲线。该测试曲线和目标测试曲线的自变量均是SOC(State Of Charge，电荷状态)、因变量为电池的电压。其中，该SOC代表电池剩余可用电量占电池总容量的百分比。该目标测试曲线可以为充电过程中的目标充电测试曲线、也可以为放电过程中目标放电测试曲线。其中，温度可以为-20℃，-10℃，0℃，15℃，25℃，35℃，45℃。一般在-30℃到50℃。Among them, the charging and discharging equipment is an electronic measuring instrument, which can perform charging and discharging tests on the battery. The test curve may be a charge test curve in a charging process or a discharge test curve in a discharge process. The independent variables of the test curve and the target test curve are both SOC (State Of Charge, state of charge), and the dependent variable is the voltage of the battery. Among them, the SOC represents the percentage of the remaining available power of the battery to the total battery capacity. The target test curve may be a target charge test curve in the charging process or a target discharge test curve in the discharge process. Wherein, the temperature can be -20°C, -10°C, 0°C, 15°C, 25°C, 35°C, and 45°C. Typically -30°C to 50°C.
具体地，计算机设备获取经充放电设备在不同温度下对目标电池的电芯进行多次充放电测试而得到的测试曲线。其中，该测试曲线可以为放电过程的放电测试曲线、也可以为充电过程的充电测试曲线。并基于该测试曲线，确定该测试曲线的容量。对于每个温度，计算机设备基于与相应温度对应的测试曲线的容量，从多个测试曲线中确定与相应温度对应的目标测试曲线。其中，充放电设备在每个温度下，均对电芯进行多次充放电测试。Specifically, the computer device acquires a test curve obtained by performing multiple charge-discharge tests on the cells of the target battery at different temperatures by the charge-discharge device. Wherein, the test curve may be a discharge test curve in a discharge process, or a charge test curve in a charging process. And based on the test curve, the capacity of the test curve is determined. For each temperature, the computer device determines a target test profile corresponding to the respective temperature from the plurality of test profiles based on the capacity of the test profile corresponding to the respective temperature. Among them, the charging and discharging equipment performs multiple charging and discharging tests on the battery cells at each temperature.
例如，充放电设备在温度为25℃的情况下，对目标电池的电芯进行5次充电测试，每次充放电测试均得到一个充电测试曲线C11、放电测试曲线C12。计算机设备获取在25℃下的5个充电测试曲线和5个放电测试曲线，并确定每个充电测试曲线的容量、每个放电测试曲线的容量。计算机设备基于与充电测试曲线分别对应的容量，从5个充电测试曲线中确定在25℃下的目标充电曲线。并基于与放电测试曲线分别对应的容量，从5个放电测试曲线中确定在25℃下的目标放电曲线。如图3所示，该图为在25℃下目标放电曲线，图中纵坐标Voltage为电压，横坐标SOC为电荷状态。For example, when the temperature of the charging and discharging equipment is 25°C, the cells of the target battery are charged and tested 5 times, and a charging test curve C11 and a discharge test curve C12 are obtained for each charge and discharge test. The computer equipment acquires 5 charge test curves and 5 discharge test curves at 25°C, and determines the capacity of each charge test curve and the capacity of each discharge test curve. The computer equipment determines the target charging curve at 25° C. from the 5 charging test curves based on the respective capacities corresponding to the charging test curves. And based on the respective capacities corresponding to the discharge test curves, the target discharge curve at 25° C. was determined from the five discharge test curves. As shown in FIG. 3 , the graph is the target discharge curve at 25°C, the voltage on the ordinate is the voltage, and the SOC on the abscissa is the state of charge.
步骤S204，对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据。Step S204, for each temperature, perform curve slope identification on the target test curve corresponding to the corresponding temperature, and obtain curve slope data corresponding to the target test curve at the corresponding temperature.
其中，曲线斜率识别用于确定曲线的斜率数据。其中，目标测试曲线中每个点代表在某个电荷状态(即SOC)下的电压值。该曲线斜率数据能够表征曲线中相邻两点的变化情况，从而，能够表征整个目标测试曲线的变化情况。Among them, the curve slope identifies the slope data used to determine the curve. Among them, each point in the target test curve represents the voltage value under a certain state of charge (ie, SOC). The curve slope data can represent the changes of two adjacent points in the curve, and thus can represent the changes of the entire target test curve.
具体地，对于每个温度，计算机设备对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下目标测试曲线的每个点所对应的曲线斜率数据。Specifically, for each temperature, the computer device performs curve slope identification on the target test curve corresponding to the corresponding temperature, and obtains curve slope data corresponding to each point of the target test curve at the corresponding temperature.
例如，在25℃下，计算机设备对目标充电曲线进行曲线斜率识别，得到目标充电曲线中各个点分别对应的曲线斜率数据。计算机设备对目标放电曲线进行曲线斜率识别，得到目标放电线中各个点分别对应的曲线斜率数据。For example, at 25°C, the computer equipment performs curve slope identification on the target charging curve, and obtains curve slope data corresponding to each point in the target charging curve. The computer equipment performs curve slope identification on the target discharge curve, and obtains curve slope data corresponding to each point in the target discharge line.
步骤S206，对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，该电荷状态间隔表征脉冲测试过程中电荷状态的调整值。Step S206, for each temperature, based on the curve slope data corresponding to the target test curve at the corresponding temperature, determine the charge state interval corresponding to the target test curve at the corresponding temperature, wherein the charge state interval represents the charge state interval in the pulse test process. Adjustment value.
其中，该电荷状态间隔表征两个电荷状态之间的差值。Wherein, the charge state interval characterizes the difference between two charge states.
具体地，对于每个温度，计算机设备基于相应温度下与目标测试曲线对应的曲线斜率数据，将曲率斜率数据变化大所对应的电荷状态，作为第一电荷状态，并将曲率斜率数据变化平缓所对应的电荷状态，作为第二电荷状态。计算机设备确定第一电荷状态的电荷状态间隔为第一间隔，并确定第二电荷状态的电荷间隔为第二间隔。其中，第一间隔小于第二间隔。其中，对于曲率斜率数据变化大的第一间隔可以在1.5％到3％之间，对于曲率斜率数据变化平缓的第二间隔可以在5％到10％。Specifically, for each temperature, based on the curve slope data corresponding to the target test curve at the corresponding temperature, the computer device takes the charge state corresponding to the large change in the curvature slope data as the first charge state, and takes the charge state corresponding to the large change in the curvature slope data as the first charge state, and uses the curve slope data corresponding to the gentle change in the curvature slope data as the first charge state. The corresponding charge state, as the second charge state. The computer device determines the charge state interval of the first charge state as the first interval, and determines the charge interval of the second charge state as the second interval. Wherein, the first interval is smaller than the second interval. Wherein, the first interval in which the curvature slope data changes greatly may be between 1.5% and 3%, and the second interval in which the curvature slope data changes gently may be between 5% and 10%.
需要说明的是，曲率斜率数据变化大证明每变化一个单位的电荷状态，电压变化大；曲线斜率数据变化平缓证明每变化一个单位的电荷状态，电荷变化小。曲率斜率数据变化大在曲线上可以表征为迅速上升或迅速下降，曲线斜率数据变化平缓在曲线上可以表征为平缓。It should be noted that the large change of the curvature slope data proves that the voltage changes greatly for each unit of charge state change; the gentle change of the curve slope data proves that each unit of the charge state changes, the charge change is small. A large change in the curvature slope data can be characterized as a rapid rise or a rapid decline on the curve, and a gentle change in the curve slope data can be characterized as a gentle curve on the curve.
步骤S208，对于每个温度，确定与相应温度对应的多个脉冲电流，并基于该相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，该脉冲时间用于指示该充放电设备进行脉冲测试。Step S208, for each temperature, determine a plurality of pulse currents corresponding to the corresponding temperature, and determine the pulse time at the corresponding temperature based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, and the pulse time is used for Instructs the charging and discharging device to perform a pulse test.
具体地，对于每个温度，计算机设备确定与相应温度对应的电流范围，并从与相应温度对应的电流范围中确定多个脉冲电流。基于该相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间。计算机设备将相应温度下与各个脉冲电流分别对应的脉冲时间、以及各个脉冲电流发送至充放电设备。充放电设备基于脉冲时间、脉冲电流进行脉冲测试，得到各个温度分别对应的电压变化曲线。其中，在进行脉冲测试的过程中，每一个脉冲结束后静置时间T≥5min，例如，该静置时间8min≤T≤180min。其中，对于25℃下，电荷状态低于20％的电荷状态间隔为2％、电荷状态在20％到80％之间的电荷状态间隔为5％、电荷状态高于80％且低于100％的电荷状态间隔为2％。Specifically, for each temperature, the computer device determines a current range corresponding to the corresponding temperature, and determines a plurality of pulse currents from the current range corresponding to the corresponding temperature. Based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, the pulse time at the corresponding temperature is determined. The computer device sends the pulse time corresponding to each pulse current and each pulse current to the charging and discharging device at the corresponding temperature. The charging and discharging equipment performs pulse testing based on the pulse time and pulse current, and obtains the voltage change curve corresponding to each temperature. Wherein, in the process of performing the pulse test, the resting time T≥5min after the end of each pulse, for example, the resting time 8min≤T≤180min. where, for 25°C, the charge state separation is 2% with charge states below 20%, the charge state separation is 5% with charge states between 20% and 80%, and charge states above 80% and below 100% The charge state spacing is 2%.
需要说明的是，各个温度分别对应有电流范围，任意两个电流范围可以重叠、可以存在交集、可以不重叠。比如，在常规温度下25℃、15℃的电流范围相同，比如从1C到3C，对于零下温度与常规温度的电流范围并不相同，考虑到在零下温度时，温度过高会损坏电池，因此，零下温度的电流范围一般不会高达3C(电池容量为40Ah，即脉冲电流为120Ah)。It should be noted that each temperature corresponds to a current range, and any two current ranges may overlap, may overlap, or may not overlap. For example, the current range of 25°C and 15°C is the same at normal temperature, such as from 1C to 3C. The current range for sub-zero temperature is different from that of normal temperature. Considering that at sub-zero temperature, the battery will be damaged if the temperature is too high, so , the current range of sub-zero temperature is generally not as high as 3C (the battery capacity is 40Ah, that is, the pulse current is 120Ah).
步骤S210，获取经充放电设备基于该脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，该电压变化曲线表征电压随脉冲电流和时间的变化情况。Step S210 , acquiring voltage variation curves corresponding to each temperature obtained by the charging and discharging equipment performing pulse testing on the target battery based on the pulse time, and the voltage variation curves representing the variation of voltage with pulse current and time.
具体地，对于每个温度，充放电设备在相应温度下按照该目标测试曲线的脉冲时间进行脉冲测试，得到各个温度分别对应的电压变化曲线。计算机设备获取经充放电设备发送的各个温度分别对应的电压变化曲线。如图4所示，电压(即图中的voltage)变化曲线即为4c，其中，4a为脉冲测试中脉冲电流(即图中current)的脉冲规律，4b为按照4a中的各个时间(即图中Time)的脉冲进行脉冲测试时，电荷状态(SOC)随时间的变化。Specifically, for each temperature, the charging and discharging device performs a pulse test at the corresponding temperature according to the pulse time of the target test curve, and obtains voltage change curves corresponding to each temperature respectively. The computer equipment obtains the voltage change curves corresponding to the respective temperatures sent by the charging and discharging equipment. As shown in Figure 4, the voltage (that is, the voltage in the figure) change curve is 4c, wherein, 4a is the pulse law of the pulse current (that is, the current in the figure) in the pulse test, and 4b is according to each time in 4a (that is, Figure 4) The state of charge (SOC) changes over time when the pulse test is performed with a pulse in Time).
步骤S212，基于该与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与该目标电池对应的电池模型的参数。Step S212 , based on the voltage change curves corresponding to the respective temperatures, perform parameter fitting through a pre-built equivalent circuit model to obtain parameters of the battery model corresponding to the target battery.
其中，本申请中的等效电路模型为二阶等效电路模型，该等效电路模型由等效电路由一个电源Voc、一个欧姆内阻R0和2个RC单元串联构成，每个RC单元由一个极化电阻和一个极化电容并联构成，具体如图5所示。该参数包括欧姆电阻、极化电阻、时间常数、极化电容。The equivalent circuit model in this application is a second-order equivalent circuit model. The equivalent circuit model consists of an equivalent circuit consisting of a power supply Voc, an ohmic internal resistance R0 and two RC units connected in series, and each RC unit is composed of A polarization resistor and a polarization capacitor are formed in parallel, as shown in Figure 5. The parameters include ohmic resistance, polarization resistance, time constant, polarization capacitance.
具体地，计算机设备将与温度分别对应的电压变化曲线，通过预先构建好的等效电路模型进行参数拟合，得到与温度、脉冲电流、电荷状态对应的参数。例如，在温度为t、脉冲电流为I1、且电荷状态为X1的情况下，欧姆电阻的值、极化电阻的值、时间常数的值、极化电容的值。其中，该参数拟合可以是Matlab，GT-sute，Amesim等数据处理软件通过最小二乘法，贝叶斯辨识算法，卡尔曼滤波算法中的至少一种方式进行拟合。Specifically, the computer equipment performs parameter fitting on the voltage change curves corresponding to the temperature through a pre-built equivalent circuit model to obtain parameters corresponding to the temperature, pulse current, and charge state. For example, when the temperature is t, the pulse current is I1, and the state of charge is X1, the value of the ohmic resistance, the value of the polarization resistance, the value of the time constant, and the value of the polarization capacitance. Wherein, the parameter fitting may be performed by data processing software such as Matlab, GT-sute, and Amesim through at least one of least squares method, Bayesian identification algorithm, and Kalman filtering algorithm.
其中，该等效电路模型的公式如下：Among them, the formula of the equivalent circuit model is as follows:
C1＝τ1/R1C1 =τ1 /R1
C2＝τ2/R2C2 =τ2 /R2
其中，U为电池端电压，Uoc为开路电压，R0为欧姆电阻，R1、R2为极化电阻，τ1、τ2为时间常数，C1、C2为极化电容，I为脉冲电流。其中，RC回路阶数N≥1，优选的，2≤N≤5；RC回路阶数过少模型不够准确，RC回路过多计算量庞大，不利于参数识别和仿真。Among them, U is the battery terminal voltage, Uoc is the open circuit voltage, R0 is the ohmic resistance, R1 and R2 are the polarization resistances, τ1 and τ2 are the time constants, C1 and C2 are the polarization capacitors, and I is the pulse current. Among them, the order of the RC loop is N≥1, and preferably, 2≤N≤5; if the order of the RC loop is too small, the model is not accurate enough, and the calculation of the RC loop is too large, which is not conducive to parameter identification and simulation.
上述电池模型参数的获取方法中，通过基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，能够从多次测试中确定真实度和准确性高的各个温度分别对应的目标测试曲线；其中，该目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况。对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据。这样，能够清晰反映出充放电过程中曲线变化是否平缓。对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，该电荷状态间隔表征脉冲测试过程中电荷状态的调整值。这样，根据目标测试曲线所表征的曲线变化情况，能够快速且有效的确定与曲线变化情况相匹配的电荷状态的调整值，大大节省了后续参数确定过程的时间成本。对于每个温度，确定与相应温度对应的多个脉冲电流，并基于该相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，该脉冲时间用于指示该充放电设备进行脉冲测试。这样，通过能够实时反映用于脉冲测试的脉冲时间。获取经充放电设备基于该脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，该电压变化曲线表征电压随脉冲电流和时间的变化情况。基于该与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与该目标电池对应的电池模型的参数。这样，在节省时间的前提下，能够得到准确性高的电池模型的参数，大大增加了对电池模型参数的准确性。In the above method for obtaining battery model parameters, the test curve is obtained by performing multiple tests on the target battery at different temperatures based on the charging and discharging equipment, and it can be determined from the multiple tests that each temperature with high fidelity and accuracy corresponds respectively. The target test curve; wherein, the target test curve represents the change of the voltage with the change of the state of charge during the test. For each temperature, the curve slope identification is performed on the target test curve corresponding to the corresponding temperature, and the curve slope data corresponding to the target test curve at the corresponding temperature is obtained. In this way, it can clearly reflect whether the curve change is gentle during the charging and discharging process. For each temperature, a charge state interval corresponding to the target test curve at the corresponding temperature is determined based on the curve slope data corresponding to the target test curve at the corresponding temperature, wherein the charge state interval represents the adjusted value of the charge state during the pulse test. In this way, according to the curve change condition represented by the target test curve, the adjustment value of the charge state matching the curve change condition can be quickly and effectively determined, which greatly saves the time cost of the subsequent parameter determination process. For each temperature, a plurality of pulse currents corresponding to the corresponding temperature are determined, and based on the charge state interval and pulse current corresponding to the target test curve at the corresponding temperature, the pulse time at the corresponding temperature is determined, and the pulse time is used to indicate the charge state. Discharge equipment for pulse testing. In this way, the pulse time used for the pulse test can be reflected in real time. Obtain the voltage variation curves corresponding to each temperature obtained by the charging and discharging equipment performing pulse testing on the target battery based on the pulse time, and the voltage variation curves represent the variation of the voltage with the pulse current and time. Based on the voltage change curves corresponding to the respective temperatures, parameters of the battery model corresponding to the target battery are obtained by performing parameter fitting through a pre-built equivalent circuit model. In this way, under the premise of saving time, the parameters of the battery model with high accuracy can be obtained, which greatly increases the accuracy of the parameters of the battery model.
在一个实施例中，如图6所示，基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，确定各个温度分别对应的目标测试曲线，包括：In one embodiment, as shown in FIG. 6 , a test curve is obtained by performing multiple tests on a target battery at different temperatures by a charging and discharging device, and the target test curve corresponding to each temperature is determined, including:
步骤S602，对于每个温度，在当前测试次数为第一测试次数的情况下，获取相应温度下第一数量个的第一测试曲线；其中，该第一数量个由该第一测试次数确定。Step S602, for each temperature, when the current number of tests is the first number of tests, obtain a first number of first test curves at the corresponding temperature; wherein the first number is determined by the first number of tests.
其中，测试次数为充放电设备对目标电池的电芯进行充放电测试的次数，其中，对于每个温度，一个测试次数对应充电测试曲线、放电测试曲线。The number of tests is the number of times that the charging and discharging device performs charge and discharge tests on the cells of the target battery, wherein, for each temperature, one number of tests corresponds to a charge test curve and a discharge test curve.
具体地，对于每个温度，在当前测试次数为第一测试次数的情况下，计算机设备获取相应温度下第一数量个的第一测试曲线。例如，在25℃下，假设第一测试次数为3次，当前测试次数为第3次，则计算机设备获取在25℃下的6个第一测试曲线。Specifically, for each temperature, when the current number of tests is the first number of tests, the computer device acquires a first number of first test curves at the corresponding temperature. For example, at 25°C, assuming that the number of the first test is 3 times and the current number of tests is the 3rd time, the computer device acquires 6 first test curves at 25°C.
需要说明的是，第一测试曲线可以为充电过程的充电测试曲线、或可以为放电过程的放电测试曲线，即在一个温度下，每进行一次测试，增加两个第一测试曲线，分别为充电过程的充电测试曲线和放电过程的放电测试曲线，即，在确保温度不改变的情况下，第一数量个为第一测试次数的两倍。It should be noted that the first test curve may be a charge test curve of the charging process, or may be a discharge test curve of the discharge process, that is, at one temperature, each time a test is performed, two first test curves are added, which are respectively charging. The charge test curve of the process and the discharge test curve of the discharge process, ie, in the case of ensuring that the temperature does not change, the first number is twice the first number of tests.
步骤S604，对于每个温度，确定相应温度下各个第一测试曲线分别对应的第一容量，并基于该相应温度下各个第一测试曲线分别对应的第一容量，判断多个第一容量中是否存在目标容量。Step S604, for each temperature, determine the first capacity corresponding to each first test curve at the corresponding temperature, and based on the first capacity corresponding to each first test curve at the corresponding temperature, determine whether the multiple first capacities are Target capacity exists.
其中，第一测试曲线可以为充电过程的第一充电测试曲线、也可以为放电过程的第一放电测试曲线。第一容量可以为放电过程的第一放电容量、也可以是充电过程的第一充电容量。目标容量可以为放电过程的目标放电容量、也可以是充电过程的目标充电容量。The first test curve may be the first charge test curve of the charging process, or the first discharge test curve of the discharge process. The first capacity may be the first discharge capacity in the discharging process or the first charging capacity in the charging process. The target capacity may be the target discharge capacity in the discharging process or the target charging capacity in the charging process.
具体地，对于每个温度，计算机设备确定相应温度下各个第一测试曲线分别对应的第一容量，并对于相应温度下，基于表征放电过程的第一充电测试曲线的第一充电容量，判断多个第一充电容量中是否存在目标充电容量，基于表征充电过程的第一放电测试曲线的第一放电容量，判断多个第一放电容量中是否存在目标放电容量。Specifically, for each temperature, the computer device determines the first capacity corresponding to each first test curve at the corresponding temperature, and for the corresponding temperature, based on the first charging capacity of the first charging test curve that characterizes the discharge process, determines more Whether there is a target charging capacity in the first charging capacities, it is determined whether there is a target discharging capacity in the plurality of first discharging capacities based on the first discharging capacity of the first discharging test curve representing the charging process.
步骤S606，对于每个温度，在多个第一容量中不存在目标容量的情况下，继续采集，直至当前测试次数为第二测试次数。Step S606, for each temperature, in the case that the target capacity does not exist in the plurality of first capacities, continue to collect until the current number of tests is the second number of tests.
其中，第二测试次数一般可以大于等于2，优选地可以第二测试次数可以为4，避免测试次数过少，导致结果不稳定的问题。与此同时，也能避免测试次数过多，导致浪费测试时间与资源的问题。Wherein, the second number of tests may generally be greater than or equal to 2, and preferably, the number of times of the second test may be 4, so as to avoid the problem of unstable results due to too few tests. At the same time, it can also avoid the problem of wasting testing time and resources due to the excessive number of tests.
具体地，对于每个温度，在多个第一充电容量中不存在目标充电容量、且多个第一放电容量中存在目标放电容量的情况下，继续采集，直至当前测试次数为第二测试次数，以确定目标充电容量。或者，对于每个温度，在多个第一充电容量中存在目标充电容量、且多个第一放电容量中不存在目标放电容量的情况下，继续采集，直至当前测试次数为第二测试次数，以确定目标放电容量。或者，对于每个温度，在多个第一充电容量中不存在目标充电容量、且多个第一放电容量中不存在目标放电容量的情况下，继续采集，直至当前测试次数为第二测试次数，以确定目标充电容量和目标放电容量。Specifically, for each temperature, in the case where the target charging capacity does not exist in the plurality of first charging capacities, and the target discharging capacity exists in the plurality of first discharging capacities, the collection is continued until the current number of tests is the second number of tests , to determine the target charge capacity. Or, for each temperature, in the case that the target charging capacity exists in the plurality of first charging capacities and the target discharging capacity does not exist in the plurality of first discharging capacities, continue to collect until the current number of tests is the second number of tests, to determine the target discharge capacity. Alternatively, for each temperature, in the case where the target charging capacity does not exist in the plurality of first charging capacities and the target discharging capacity does not exist in the plurality of first discharging capacities, continue to collect until the current number of tests is the second number of tests , to determine the target charge capacity and target discharge capacity.
步骤S608，对于每个温度，获取相应温度下第二数量个的第二测试曲线；其中第二数量个由该第二测试次数确定。Step S608, for each temperature, obtain a second number of second test curves at the corresponding temperature; wherein the second number is determined by the second number of tests.
需要说明的是，第一测试次数小于第二测试次数。该第二测试曲线可以是充电过程中的第二充电测试曲线、也可以是放电过程中的第二放电测试曲线。It should be noted that the number of times of the first test is less than the number of times of the second test. The second test curve may be the second charge test curve in the charging process or the second discharge test curve in the discharge process.
步骤S610，对于每个温度，确定相应温度下各个第二测试曲线分别对应的第二容量，并基于多个第二容量，确定第二容量平均值。Step S610 , for each temperature, determine the second capacity corresponding to each second test curve at the corresponding temperature, and determine the average value of the second capacity based on the plurality of second capacities.
其中，第二测试曲线可以为充电过程的第二充电测试曲线、也可以为放电过程的第二放电测试曲线。第二容量可以为放电过程的第二放电容量、也可以是充电过程的第二充电容量。第二容量平均值可以为放电过程的第二放电容量平均值、也可以是充电过程的第二充电容量平均值。Wherein, the second test curve may be the second charge test curve of the charging process, or the second discharge test curve of the discharge process. The second capacity may be the second discharge capacity in the discharging process or the second charging capacity in the charging process. The second average value of capacity may be the average value of the second discharge capacity in the discharge process, or may be the average value of the second charge capacity in the process of charging.
具体地，对于每个温度，在放电过程且相应温度的情况下，确定各个第二放电测试曲线分别对应的第二放电容量。计算机设备对第二放电容量进行平均计算，确定第二放电容量平均值。对于每个温度，在充电过程中且相应温度的情况下，确定各个第二充电测试曲线分别对应的第二充电容量。计算机设备对第二充电容量进行平均计算，确定第二充电容量平均值。Specifically, for each temperature, in the case of the discharge process and the corresponding temperature, the second discharge capacities corresponding to the respective second discharge test curves are determined. The computer device performs an average calculation on the second discharge capacity to determine the average value of the second discharge capacity. For each temperature, during the charging process and under the condition of the corresponding temperature, the second charging capacity corresponding to each second charging test curve is determined. The computer device performs an average calculation on the second charging capacity to determine the average value of the second charging capacity.
步骤S612，对于每个温度，将相应温度下各个第二容量分别与该第二容量平均值进行比较，得到相应温度下与各个第二容量对应的第二容量比较结果。Step S612 , for each temperature, compare each second capacity at the corresponding temperature with the average value of the second capacity, and obtain a second capacity comparison result corresponding to each second capacity at the corresponding temperature.
具体地，对于每个温度，在放电过程且相应温度的情况下，计算机设备将各个第二放电容量分别与第二放电容量平均值进行比较，得到放电过程且相应温度下，与各个第二放电容量分别对应的第二放电容量比较结果。对于每个温度，在充电过程且相应温度的情况下，计算机设备将各个第二充电容量分别与第二充电容量平均值进行比较，得到充电过程且相应温度下，与各个第二充电容量分别对应的第二充电容量比较结果。Specifically, for each temperature, in the case of the discharge process and the corresponding temperature, the computer equipment compares each second discharge capacity with the average value of the second discharge capacity, and obtains the discharge process and the corresponding temperature, and each second discharge capacity is compared with each other. The second discharge capacity comparison results corresponding to the capacities respectively. For each temperature, in the case of the charging process and the corresponding temperature, the computer device compares each second charging capacity with the average value of the second charging capacity, and obtains the charging process and the corresponding temperature, which corresponds to each second charging capacity respectively. The results of the second charging capacity comparison.
步骤S614，对于每个温度，基于该相应温度下与各个第二容量对应的第二容量比较结果，从多个第二容量中确定目标容量，并将该目标容量对应的第二测试曲线，作为相应温度下的目标测试曲线。Step S614, for each temperature, based on the comparison result of the second capacity corresponding to each second capacity at the corresponding temperature, determine the target capacity from the plurality of second capacities, and use the second test curve corresponding to the target capacity as The target test curve at the corresponding temperature.
其中，该目标测试曲线可以为充电过程中的目标充电测试曲线、也可以为放电过程中目标放电测试曲线。The target test curve may be a target charge test curve in the charging process or a target discharge test curve in the discharge process.
具体地，在放电过程且相应温度的情况下，计算机设备基于与各个第二放电容量对应的第二放电容量比较结果，确定各个第二放电容量分别与第二放电容量平均值的放电差值，并将放电差值最小所对应的第二放电容量作为目标放电容量。计算机设备将目标放电容量对应的第二放电测试曲线，作为相应温度下的目标放电测试曲线。在充电过程且相应温度的情况下，计算机设备基于与各个第二充电容量对应的第二充电容量比较结果，确定各个第二充电容量分别与第二充电容量平均值的第二充电差值，并将第二充电差值最小所对应的第二充电容量作为目标充电容量。计算机设备将目标充电容量对应的第二充电测试曲线，作为相应温度下的目标充电测试曲线。Specifically, in the case of the discharge process and the corresponding temperature, the computer device determines the discharge difference between each second discharge capacity and the average value of the second discharge capacity based on the comparison result of the second discharge capacity corresponding to each second discharge capacity, The second discharge capacity corresponding to the smallest discharge difference is taken as the target discharge capacity. The computer equipment takes the second discharge test curve corresponding to the target discharge capacity as the target discharge test curve at the corresponding temperature. In the case of the charging process and the corresponding temperature, the computer device determines, based on the comparison results of the second charging capacities corresponding to the respective second charging capacities, the second charging differences between the respective second charging capacities and the average value of the second charging capacities, and The second charging capacity corresponding to the smallest second charging difference is taken as the target charging capacity. The computer device uses the second charging test curve corresponding to the target charging capacity as the target charging test curve at the corresponding temperature.
在本实施例中，对于每个温度，在当前测试次数为第一测试次数的情况下，对第一测试曲线的第一容量，进行预判断，能够迅速且有效的曲线确定第一容量中是否存在目标容量，通过对各个第一测试曲线进行粗筛选，能够避免在第一容量中存在目标容量的情况下进行额外的测试，节省了测试时间。对于每个温度，在多个第一容量中不存在目标容量的情况下，在当前测试次数为第二测试次数的情况下，对第二测试曲线的第二容量，进行再判断。结合第二容量平均值，将与第二容量平均值相差最小的第二容量，直接作为目标容量，确保了目标测试曲线的有效性和准确性。In this embodiment, for each temperature, when the current number of tests is the first number of tests, pre-judgment is performed on the first capacity of the first test curve, and the curve can quickly and effectively determine whether the first capacity is in the first capacity. If there is a target capacity, by roughly screening each of the first test curves, it is possible to avoid performing an additional test when the target capacity exists in the first capacity, thereby saving the test time. For each temperature, when the target capacity does not exist among the plurality of first capacities, and when the current number of tests is the second number of tests, the second capacity of the second test curve is re-judged. Combined with the average value of the second capacity, the second capacity with the smallest difference from the average value of the second capacity is directly used as the target capacity, which ensures the validity and accuracy of the target test curve.
在一个实施例中，该基于该相应温度下各个第一测试曲线分别对应的第一容量，判断多个第一容量中是否存在目标容量，包括：基于该相应温度下各个第一测试曲线分别对应的第一容量，确定容量最大值、容量最小值、以及第一容量平均值。将该容量最大值和该容量最小值之间的差值与该第一容量平均值进行比较，得到差值比较结果。在差值比较结果小于差值阈值的情况下，确定多个第一容量中存在目标容量，在差值比较结果大于或等于差值阈值情况下，确定多个第一容量中不存在目标容量。In one embodiment, determining whether there is a target capacity in the plurality of first capacities based on the first capacities corresponding to the respective first test curves at the corresponding temperature includes: corresponding to the respective first test curves at the corresponding temperature The first capacity of , determine the maximum capacity, the minimum capacity, and the average value of the first capacity. The difference between the maximum capacity value and the minimum capacity value is compared with the first average capacity value to obtain a difference comparison result. If the difference comparison result is less than the difference threshold, it is determined that the target capacity exists in the plurality of first capacities, and if the difference comparison result is greater than or equal to the difference threshold, it is determined that the target capacity does not exist in the plurality of first capacities.
其中，第一测试曲线可以为充电过程的第一充电测试曲线、也可以为放电过程的第一放电测试曲线。第一容量可以为放电过程的第一放电容量、也可以是充电过程的第一充电容量。目标容量可以为放电过程的目标放电容量、也可以是充电过程的目标充电容量。The first test curve may be the first charge test curve of the charging process, or the first discharge test curve of the discharge process. The first capacity may be the first discharge capacity in the discharging process or the first charging capacity in the charging process. The target capacity may be the target discharge capacity in the discharging process or the target charging capacity in the charging process.
具体地，对于每个温度，在充电过程、且相应温度下，计算机设备基于各个第一充电测试曲线分别对应的第一充电容量，确定充电容量最大值、充电容量最小值、以及第一充电容量平均值。计算机设备将充电容量最大值减去充电容量最小值，得到第一充电差值，并将第一充电差值减去第一充电容量平均值，得到充电差值比较结果。在该充电差值比较结果小于充电差值阈值的情况下，确定多个第一充电容量中存在目标充电容量，在充电差值比较结果大于或等于充电差值阈值情况下，确定多个第一充电容量中不存在目标充电容量。Specifically, for each temperature, during the charging process and at the corresponding temperature, the computer device determines the maximum value of the charging capacity, the minimum value of the charging capacity, and the first charging capacity based on the first charging capacity corresponding to each first charging test curve. average value. The computer equipment subtracts the maximum value of the charging capacity from the minimum value of the charging capacity to obtain the first charging difference, and subtracts the first charging capacity average from the first charging capacity to obtain the comparison result of the charging difference. In the case that the charging difference comparison result is smaller than the charging difference threshold, it is determined that a target charging capacity exists in the plurality of first charging capacities, and when the charging difference comparison result is greater than or equal to the charging difference threshold, determining that the plurality of first charging capacities exist The target charge capacity does not exist in the charge capacity.
对于每个温度，在放电过程、且相应温度下，计算机设备基于各个第一放电测试曲线分别对应的第一放电容量，确定放电容量最大值、放电容量最小值、以及第一放电容量平均值。计算机设备将放电容量最大值减去放电容量最小值，得到第一放电差值，并将第一放电差值减去第一放电容量平均值，得到放电差值比较结果。在该放电差值比较结果小于放电差值阈值的情况下，确定多个第一放电容量中存在目标放电容量，在放电差值比较结果大于或等于放电差值阈值情况下，确定多个第一放电容量中不存在目标放电容量。For each temperature, during the discharge process and at the corresponding temperature, the computer device determines the maximum discharge capacity, the minimum discharge capacity, and the average value of the first discharge capacity based on the first discharge capacities corresponding to the respective first discharge test curves. The computer equipment subtracts the maximum discharge capacity from the minimum discharge capacity to obtain the first discharge difference, and subtracts the first discharge capacity average from the first discharge difference to obtain the comparison result of the discharge difference. In the case that the discharge difference comparison result is smaller than the discharge difference threshold, it is determined that a target discharge capacity exists in the plurality of first discharge capacities, and when the discharge difference comparison result is greater than or equal to the discharge difference threshold, it is determined that the plurality of first discharge capacities exist The target discharge capacity does not exist in the discharge capacity.
例如，在25℃且放电的过程中，该第一测试次数为3次，存在3个第一放电测试曲线的第一放电容量。计算机设备基于3个第一放电容量，放电容量最大值、放电容量最小值、以及第一放电容量平均值，并将放电容量最大值减去放电容量最小值，得到第一放电差值。计算机设备将第一放电差值减去第一放电容量平均值，得到进行3次测试的容量极差。若该容量极差小于1％，则确定存在目标放电容量，停止测试。For example, in the process of discharging at 25° C., the number of times of the first test is 3, and there are three first discharge capacities of the first discharge test curves. Based on the three first discharge capacities, the maximum discharge capacity, the minimum discharge capacity, and the average value of the first discharge capacity, the computer device subtracts the minimum discharge capacity from the maximum discharge capacity to obtain the first discharge difference. The computer equipment subtracts the average value of the first discharge capacity from the first discharge difference to obtain the capacity range for three tests. If the capacity range is less than 1%, it is determined that the target discharge capacity exists, and the test is stopped.
在本实施例中，通过基于该相应温度下各个第一测试曲线分别对应的第一容量，确定容量最大值、容量最小值、以及第一容量平均值。并基于容量最大值、容量最小值、以及第一容量平均值，对第一测试曲线的第一容量，进行预判断，能够迅速且有效的曲线确定第一容量中是否存在目标容量，通过对各个第一测试曲线进行粗筛选，能够避免在第一容量中存在目标容量的情况下进行额外的测试，节省了测试时间。In this embodiment, the maximum value, the minimum value, and the average value of the first capacity are determined based on the first capacities corresponding to the respective first test curves at the corresponding temperatures. And based on the maximum capacity, the minimum capacity, and the average value of the first capacity, the first capacity of the first test curve is pre-judged, and the curve can quickly and effectively determine whether there is a target capacity in the first capacity. The rough screening of the first test curve can avoid performing additional tests when the target capacity exists in the first capacity, thereby saving the test time.
在一个实施例中，该方法还包括：对于每个温度，在多个第一容量中存在目标容量的情况下，基于相应温度下各个第一测试曲线对应的第一容量，确定相应温度下第一容量平均值。对于每个温度，将相应温度下各个第一容量，分别与所述相应温度下第一容量平均值进行比较，得到相应温度下与各个第一容量对应的第一容量比较结果。对于每个温度，基于所述相应温度下与各个第一容量对应的第一容量比较结果，从多个第一容量中确定目标容量，并将所述目标容量对应的第一测试曲线，作为相应温度下的目标测试曲线。In one embodiment, the method further includes: for each temperature, in the case that a target capacity exists in the plurality of first capacities, based on the first capacities corresponding to the respective first test curves at the corresponding temperature, determining the first capacity at the corresponding temperature. A volume average. For each temperature, each first capacity at the corresponding temperature is compared with the average value of the first capacity at the corresponding temperature, to obtain a first capacity comparison result corresponding to each first capacity at the corresponding temperature. For each temperature, a target capacity is determined from a plurality of first capacities based on the first capacity comparison result corresponding to each first capacity at the corresponding temperature, and the first test curve corresponding to the target capacity is used as the corresponding Target test curve at temperature.
具体地，对于每个温度，在放电过程且相应温度下，在第一放电容量中存在目标放电容量的情况下，计算机设备对多个第一放电容量进行平均值计算，得到第一放电容量平均值。计算机设备将各个第一放电容量平均值与各个第一放电容量进行比较，得到与各个第一放电容量分别对应的第一放电容量比较结果。计算机设备基于第一放电容量比较结果，确定各个第一放电容量分别对应分别与第一放电容量平均值的第一放电差值，并将第一放电差值最小对应的第一放电容量作为目标放电容量。计算机设备将目标放电容量对应的第一放电测试曲线，作为相应温度下的目标放电测试曲线。Specifically, for each temperature, in the discharge process and at the corresponding temperature, in the case that the target discharge capacity exists in the first discharge capacity, the computer device performs an average calculation on a plurality of first discharge capacities to obtain the average value of the first discharge capacity. value. The computer device compares the average value of each first discharge capacity with each first discharge capacity, and obtains a first discharge capacity comparison result corresponding to each first discharge capacity. The computer device determines, based on the comparison result of the first discharge capacities, that each of the first discharge capacities corresponds to a first discharge difference value respectively from the average value of the first discharge capacity, and uses the first discharge capacity corresponding to the smallest first discharge capacity value as the target discharge value. capacity. The computer equipment takes the first discharge test curve corresponding to the target discharge capacity as the target discharge test curve at the corresponding temperature.
对于每个温度，在充电过程且相应温度下，在第一充电容量中存在目标充电容量的情况下，计算机设备对多个第一充电容量进行平均值计算，得到第一充电容量平均值。计算机设备将各个第一充电容量平均值与各个第一充电容量进行比较，得到与各个第一充电容量分别对应的第一充电容量比较结果。计算机设备基于第一充电容量比较结果，确定各个第一充电容量分别对应分别与第一充电容量平均值的第一充电差值，并将第一充电差值最小对应的第一充电容量作为目标充电容量。计算机设备将目标充电容量对应的第一充电测试曲线，作为相应温度下的目标充电测试曲线。For each temperature, during the charging process and at the corresponding temperature, when the target charging capacity exists in the first charging capacity, the computer device performs an average calculation on a plurality of first charging capacities to obtain an average value of the first charging capacities. The computer device compares each first charging capacity average value with each first charging capacity, and obtains a first charging capacity comparison result corresponding to each first charging capacity. The computer device determines, based on the first charging capacity comparison result, that each first charging capacity corresponds to a first charging difference from the average value of the first charging capacity, and uses the first charging capacity corresponding to the smallest first charging difference as the target charging capacity. The computer equipment takes the first charging test curve corresponding to the target charging capacity as the target charging test curve at the corresponding temperature.
在本实施例中，在确定第一容量中存在目标容量的情况下，直接基于第一容量确定第一容量平均值。结合第一容量平均值，将与第一容量平均值相差最小的第一容量，直接作为目标容量，实现了不需要额外进行多次测试，就能够有效且准确的确定目标测试曲线。即在节省测试时间的基础上，还能确保准确率，即大大提高了目标测试曲线的效率。In this embodiment, when it is determined that the target capacity exists in the first capacity, the first capacity average value is directly determined based on the first capacity. Combined with the average value of the first capacity, the first capacity with the smallest difference from the average value of the first capacity is directly used as the target capacity, so that the target test curve can be effectively and accurately determined without performing multiple additional tests. That is, on the basis of saving test time, the accuracy rate can also be ensured, that is, the efficiency of the target test curve is greatly improved.
在一个实施例中，如图7所示，该对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据，包括：In one embodiment, as shown in FIG. 7 , for each temperature, the curve slope identification is performed on the target test curve corresponding to the corresponding temperature, and the curve slope data corresponding to the target test curve at the corresponding temperature is obtained, including:
步骤S702，对于每个温度，通过对与相应温度对应的目标测试曲线进行一阶求导，确定相应温度下与目标测试曲线对应的一阶导数曲线。Step S702 , for each temperature, a first-order derivative curve corresponding to the target test curve at the corresponding temperature is determined by taking the first-order derivative of the target test curve corresponding to the corresponding temperature.
具体地，对于每个温度，计算机设备通过MATLAB、或者ORIGIN、或者EXCEl软件对相应温度对应的目标测试曲线进行一阶求导，确定相应温度下与目标测试曲线对应的一阶导数曲线。比如，如图8所示，该图为25℃下对图3所示的目标测试曲线进行一阶求导后得到的一阶导数曲线。Specifically, for each temperature, the computer device performs a first-order derivative on the target test curve corresponding to the corresponding temperature through MATLAB, or ORIGIN, or EXCE1 software, and determines the first-order derivative curve corresponding to the target test curve at the corresponding temperature. For example, as shown in FIG. 8 , the graph is a first-order derivative curve obtained by performing a first-order derivation of the target test curve shown in FIG. 3 at 25°C.
步骤S704，基于该相应温度下与目标测试曲线对应的一阶导数曲线，确定相应温度下与目标测试曲线对应的曲线斜率数据。Step S704, based on the first derivative curve corresponding to the target test curve at the corresponding temperature, determine the curve slope data corresponding to the target test curve at the corresponding temperature.
其中，曲线斜率数据为一阶导线曲线中各个状态间隔分别对应的斜率值。The curve slope data is the slope value corresponding to each state interval in the first-order wire curve.
该对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，包括：For each temperature, based on the curve slope data corresponding to the target test curve at the corresponding temperature, determine the charge state interval corresponding to the target test curve at the corresponding temperature, including:
步骤S706，对于每个温度，将相应温度下与目标测试曲线对应的曲线斜率数据，与斜率阈值进行比较，得到相应温度下与目标测试曲线对应的多个斜率比较结果。Step S706, for each temperature, compare the curve slope data corresponding to the target test curve at the corresponding temperature with the slope threshold to obtain multiple slope comparison results corresponding to the target test curve at the corresponding temperature.
具体地，对于每个温度，计算机设备将相应温度下与目标测试曲线对应的曲线斜率数据分别与斜率阈值进行大小比较，得到相应温度下与目标测试曲线对应的斜率比较结果。Specifically, for each temperature, the computer device compares the curve slope data corresponding to the target test curve at the corresponding temperature with the slope threshold, and obtains the slope comparison result corresponding to the target test curve at the corresponding temperature.
步骤S708，对于相应温度下与目标测试曲线对应的多个斜率比较结果，确定相应温度下与目标测试曲线对应的电荷状态间隔。Step S708, for a plurality of slope comparison results corresponding to the target test curve at the corresponding temperature, determine the charge state interval corresponding to the target test curve at the corresponding temperature.
具体地，计算机设备将斜率比较结果表征为曲率斜率变化大所对应的电荷状态，作为第一电荷状态，将斜率比较结果表征为曲率斜率数据变化平缓所对应的电荷状态，作为第二电荷状态。计算机设备从第一间隔范围中确定第一电荷状态的电荷状态间隔，并从第二间隔范围中确定第二电荷状态的电荷间隔。例如，第一电荷状态可以为电荷状态低于20％、或电荷状态高于80％，第二电荷状态为电荷状态在20％到80％之间。需要说明的是，第一间隔范围小于第二间隔范围。比如第一间隔范围为小于5％，第二间隔范围为大于等于5％。Specifically, the computer device characterizes the slope comparison result as a charge state corresponding to a large change in the curvature slope as the first charge state, and characterizes the slope comparison result as a charge state corresponding to a gentle change in the curvature slope data as the second charge state. The computer device determines the charge state interval of the first charge state from the first interval range and determines the charge interval of the second charge state from the second interval range. For example, the first state of charge may be a state of charge below 20%, or a state of charge above 80%, and the second state of charge may be a state of charge between 20% and 80%. It should be noted that the first interval range is smaller than the second interval range. For example, the first interval range is less than 5%, and the second interval range is greater than or equal to 5%.
在本实施例中，通过对目标测试曲线进行一阶求导，能够迅速确定曲线斜率数据，并基于该曲线斜率数据，能够准确表征目标测试曲线的曲线变化情况，并根据目标测试曲线所表征的曲线变化情况，能够快速且有效的确定与曲线变化情况相匹配的电荷状态间隔，大大节省了后续参数确定过程的时间成本。In this embodiment, by taking the first-order derivation of the target test curve, the curve slope data can be quickly determined, and based on the curve slope data, the curve change of the target test curve can be accurately characterized, and according to the curve slope data represented by the target test curve The curve change situation can quickly and effectively determine the charge state interval matching the curve change situation, which greatly saves the time cost of the subsequent parameter determination process.
在一个实施例中，对于每个温度，基于该与相应温度对应的多个脉冲电流、以及与相应温度对应的电荷状态间隔，通过脉冲时间计算公式，确定相应温度下与各个脉冲电流分别对应的脉冲时间。In one embodiment, for each temperature, based on the plurality of pulse currents corresponding to the corresponding temperature and the charge state interval corresponding to the corresponding temperature, the pulse time calculation formula is used to determine the corresponding pulse currents at the corresponding temperature. pulse time.
其中，脉冲时间t计算公式如下所示：Among them, the calculation formula of pulse time t is as follows:
其中，C为放电的倍率，N为要调整的电荷状态间隔。比如，电荷状态间隔为2％，脉冲倍率为3C(即脉冲电流120Ah)，脉冲时间为24s。对于电荷状态间隔为5％，脉冲倍率为3C(即脉冲电流120Ah)，脉冲时间为60s。Among them, C is the discharge rate, and N is the charge state interval to be adjusted. For example, the charge state interval is 2%, the pulse magnification is 3C (ie, the pulse current is 120Ah), and the pulse time is 24s. For a charge state interval of 5%, the pulse magnification is 3C (ie, the pulse current is 120Ah), and the pulse time is 60s.
在本实施例中，基于能够如实反映目标测试曲线情况的电荷状态间隔，能够得到与曲线情况相适配的脉冲时间。这样，通过与目标测试曲线相适配的电荷状态间隔、脉冲时间，能够得到准确性高且有效的电压变化曲线。In this embodiment, based on the charge state interval that can faithfully reflect the target test curve condition, the pulse time suitable for the curve condition can be obtained. In this way, a highly accurate and effective voltage change curve can be obtained by adapting the charge state interval and pulse time to the target test curve.
为了更加清楚的了解本申请的技术方案，提供了一个更为详细实施例进行描述。具体地如下：For a clearer understanding of the technical solutions of the present application, a more detailed embodiment is provided for description. Specifically as follows:
步骤一：确定目标测试曲线，下述以放电过程为例，进行描述。Step 1: Determine the target test curve, which is described below by taking the discharge process as an example.
具体地，对于每个温度，在当前测试次数为第一测试次数的情况下，获取相应温度下第一数量个的第一测试曲线。基于该相应温度下各个第一测试曲线分别对应的第一容量，确定容量最大值、容量最小值、以及第一容量平均值。将该容量最大值和该容量最小值之间的差值与该第一容量平均值进行比较，得到差值比较结果。在差值比较结果小于差值阈值的情况下，确定多个第一容量中存在目标容量，在差值比较结果大于或等于差值阈值情况下，确定多个第一容量中不存在目标容量。对于每个温度，在多个第一容量中不存在目标容量的情况下，继续采集，直至当前测试次数为第二测试次数。对于每个温度，获取相应温度下第二数量个的第二测试曲线。对于每个温度，确定相应温度下各个第二测试曲线分别对应的第二容量，并基于多个第二容量，确定第二容量平均值。对于每个温度，将相应温度下各个第二容量分别与该第二容量平均值进行比较，得到相应温度下与各个第二容量对应的第二容量比较结果。对于每个温度，基于该相应温度下与各个第二容量对应的第二容量比较结果，从多个第二容量中确定目标容量，并将该目标容量对应的第二测试曲线，作为相应温度下的目标测试曲线。Specifically, for each temperature, when the current number of tests is the first number of tests, a first number of first test curves at the corresponding temperature are acquired. Based on the first capacities corresponding to the respective first test curves at the corresponding temperatures, the maximum capacity, the minimum capacity, and the first average value of the capacity are determined. The difference between the maximum capacity value and the minimum capacity value is compared with the first average capacity value to obtain a difference comparison result. If the difference comparison result is less than the difference threshold, it is determined that the target capacity exists in the plurality of first capacities, and if the difference comparison result is greater than or equal to the difference threshold, it is determined that the target capacity does not exist in the plurality of first capacities. For each temperature, if the target capacity does not exist in the plurality of first capacities, the collection is continued until the current number of tests is the second number of tests. For each temperature, a second number of second test curves at the corresponding temperature are obtained. For each temperature, the second capacities corresponding to the respective second test curves at the corresponding temperature are determined, and based on the plurality of second capacities, the average value of the second capacities is determined. For each temperature, each second capacity at the corresponding temperature is compared with the average value of the second capacity, to obtain a second capacity comparison result corresponding to each second capacity at the corresponding temperature. For each temperature, a target capacity is determined from a plurality of second capacities based on the comparison results of the second capacities corresponding to the respective second capacities at the corresponding temperature, and the second test curve corresponding to the target capacity is used as the temperature at the corresponding temperature. target test curve.
对于每个温度，在多个第一容量中存在目标容量的情况下，基于相应温度下各个第一测试曲线对应的第一容量，确定相应温度下第一容量平均值。对于每个温度，将相应温度下各个第一容量，分别与所述相应温度下第一容量平均值进行比较，得到相应温度下与各个第一容量对应的第一容量比较结果。对于每个温度，基于所述相应温度下与各个第一容量对应的第一容量比较结果，从多个第一容量中确定目标容量，并将所述目标容量对应的第一测试曲线，作为相应温度下的目标测试曲线。For each temperature, when a target capacity exists in the plurality of first capacities, an average value of the first capacities at the corresponding temperature is determined based on the first capacities corresponding to the respective first test curves at the corresponding temperature. For each temperature, each first capacity at the corresponding temperature is compared with the average value of the first capacity at the corresponding temperature, to obtain a first capacity comparison result corresponding to each first capacity at the corresponding temperature. For each temperature, a target capacity is determined from a plurality of first capacities based on the first capacity comparison result corresponding to each first capacity at the corresponding temperature, and the first test curve corresponding to the target capacity is used as the corresponding Target test curve at temperature.
步骤二：确定电荷状态间隔。Step 2: Determine the charge state interval.
具体地，对于每个温度，通过MATLAB软件或Origin软件，对与相应温度对应的目标测试曲线进行一阶求导，确定相应温度下与目标测试曲线对应的一阶导数曲线。基于该相应温度下与目标测试曲线对应的一阶导数曲线，确定相应温度下与目标测试曲线对应的曲线斜率数据。对于每个温度，将相应温度下与目标测试曲线对应的曲线斜率数据，与斜率阈值进行比较，得到相应温度下与目标测试曲线对应的多个斜率比较结果。对于相应温度下与目标测试曲线对应的多个斜率比较结果，确定相应温度下与目标测试曲线对应的电荷状态间隔。Specifically, for each temperature, use MATLAB software or Origin software to perform a first-order derivative of the target test curve corresponding to the corresponding temperature, and determine the first-order derivative curve corresponding to the target test curve at the corresponding temperature. Based on the first derivative curve corresponding to the target test curve at the corresponding temperature, the curve slope data corresponding to the target test curve at the corresponding temperature is determined. For each temperature, the curve slope data corresponding to the target test curve at the corresponding temperature is compared with the slope threshold to obtain multiple slope comparison results corresponding to the target test curve at the corresponding temperature. For a plurality of slope comparison results corresponding to the target test curve at the corresponding temperature, the charge state interval corresponding to the target test curve at the corresponding temperature is determined.
步骤三：确定脉冲时间。Step 3: Determine the pulse time.
具体地，对于每个温度，确定与相应温度对应的多个脉冲电流。对于每个温度，基于该与相应温度对应的多个脉冲电流、以及与相应温度对应的电荷状态间隔，通过脉冲时间计算公式，确定相应温度下与各个脉冲电流分别对应的脉冲时间。计算机设备将相应温度下与各个脉冲电流分别对应的脉冲时间、以及各个脉冲电流发送至充放电设备。充放电设备基于脉冲时间、脉冲电流进行脉冲测试，得到各个温度分别对应的电压变化曲线。Specifically, for each temperature, a plurality of pulse currents corresponding to the corresponding temperature are determined. For each temperature, based on the plurality of pulse currents corresponding to the corresponding temperature and the charge state interval corresponding to the corresponding temperature, the pulse time corresponding to each pulse current at the corresponding temperature is determined through the pulse time calculation formula. The computer device sends the pulse time corresponding to each pulse current and each pulse current to the charging and discharging device at the corresponding temperature. The charging and discharging equipment performs pulse testing based on the pulse time and pulse current, and obtains the voltage change curve corresponding to each temperature.
步骤四：基于等效电路模型，确定电池模型的参数。Step 4: Determine the parameters of the battery model based on the equivalent circuit model.
具体地，基于电源、欧姆内阻、极化电阻、极化电容构建二阶等效电路模型。并根据该与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到包含有与该目标电池对应的电池模型的参数的参数表格。比如，该参数表格可以为三维表格，具体地自变量为电荷状态、温度、脉冲电流。Specifically, a second-order equivalent circuit model is constructed based on the power supply, ohmic internal resistance, polarization resistance, and polarization capacitance. According to the voltage change curves corresponding to the respective temperatures, parameter fitting is performed by using a pre-built equivalent circuit model to obtain a parameter table including parameters of the battery model corresponding to the target battery. For example, the parameter table may be a three-dimensional table, and specifically, the independent variables are charge state, temperature, and pulse current.
此外，为了验证本申请的电池模型的参数的准确性，将传统的HPPC方法和本申请的方法进行对比。如图9所示，传统的HPPC测试(10％间隔)和本实施例中采样间隔后建立的二阶等效电路模型后放电仿真数据。本实施例所采用的方案能够确保获取参数的准确性。In addition, in order to verify the accuracy of the parameters of the battery model of the present application, the traditional HPPC method and the method of the present application are compared. As shown in FIG. 9 , the discharge simulation data after the conventional HPPC test (10% interval) and the second-order equivalent circuit model established after the sampling interval in this embodiment. The solution adopted in this embodiment can ensure the accuracy of the acquired parameters.
在本实施例中，通过多次测试能够确定真实度和准确性高的各个温度分别对应的目标测试曲线。通过对目标测试曲线进行一阶求导，能够清晰反映出充放电过程中曲线变化是否平缓。这样，根据目标测试曲线所表征的曲线变化情况，能够快速且有效的确定与曲线变化情况相匹配的电荷状态间隔，大大节省了后续参数确定过程的时间成本。基于适配性高的电荷状态间隔，进行脉冲测试，能够得到准确性高的电压变化曲线。这样，在节省时间的前提下，能够得到准确性高的电池模型的参数，大大增加了对电池模型参数的准确性。此外，本实施例相对于传统的HPPC测试方法来说，本实施例中测试一个温度一个倍率下的脉冲曲线数据需要约4-6小时，某温度下不同倍率(如测试4个不同倍率)需要一天左右测试周期，而对于传统HPPC测试方法，若测试温度不是25℃，每次调整电荷状态需要重新回到25℃调整，再调整到响应的温度进行不同倍率的脉冲放电测试(可同时测试不同倍率)，这样，传统HPPC方法测试某一温度下不同SOC下测试周期非常长，而本实施例采用边放电脉冲边调整电荷状态，不需要回到常温进行调整，节省温度适应时间，即大大缩短试验周期和提高试验精度。In this embodiment, target test curves corresponding to each temperature with high authenticity and accuracy can be determined through multiple tests. By taking the first-order derivation of the target test curve, it can clearly reflect whether the curve changes smoothly during the charging and discharging process. In this way, according to the curve change condition represented by the target test curve, the charge state interval matching the curve change condition can be quickly and effectively determined, which greatly saves the time cost of the subsequent parameter determination process. Based on the charge state interval with high adaptability, the pulse test can be performed to obtain a voltage change curve with high accuracy. In this way, under the premise of saving time, the parameters of the battery model with high accuracy can be obtained, which greatly increases the accuracy of the parameters of the battery model. In addition, compared with the traditional HPPC test method in this embodiment, it takes about 4-6 hours to test the pulse curve data at one temperature and one magnification in this embodiment. The test cycle is about one day, and for the traditional HPPC test method, if the test temperature is not 25°C, each time the charge state is adjusted, it needs to be adjusted back to 25°C, and then adjusted to the corresponding temperature to perform pulse discharge tests at different rates (different rates can be tested at the same time). In this way, the traditional HPPC method for testing different SOCs at a certain temperature has a very long test period, while this embodiment uses discharge pulses to adjust the state of charge, and does not need to return to normal temperature for adjustment, saving temperature adaptation time, that is, greatly shortening Test cycle and improve test accuracy.
应该理解的是，虽然如上所述的各实施例所涉及的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，如上所述的各实施例所涉及的流程图中的至少一部分步骤可以包括多个步骤或者多个阶段，这些步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤中的步骤或者阶段的至少一部分轮流或者交替地执行。It should be understood that, although the steps in the flowcharts involved in the above embodiments are sequentially displayed according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, the execution of these steps is not strictly limited to the order, and these steps may be performed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but may be performed at different times The execution order of these steps or phases is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or phases in the other steps.
基于同样的发明构思，本申请实施例还提供了一种用于实现上述所涉及的电池模型参数的获取方法的电池模型参数的获取装置。该装置所提供的解决问题的实现方案与上述方法中所记载的实现方案相似，故下面所提供的一个或多个电池模型参数的获取装置实施例中的具体限定可以参见上文中对于电池模型参数的获取方法的限定，在此不再赘述。Based on the same inventive concept, an embodiment of the present application also provides a battery model parameter acquisition device for implementing the above-mentioned battery model parameter acquisition method. The solution to the problem provided by the device is similar to the solution described in the above method, so the specific limitations in the embodiment of the device for obtaining one or more battery model parameters provided below can refer to the above for battery model parameters The limitation of the acquisition method is not repeated here.
在一个实施例中，如图10所示，提供了一种电池模型参数的获取装置，包括：第一确定模块1002、识别模块1004、第二确定模块1006、第三确定模块1008、获取模块1010和拟合模块1012，其中：In one embodiment, as shown in FIG. 10 , a device for acquiring battery model parameters is provided, including: a
第一确定模块1002，用于基于经充放电设备在不同温度下对目标电池进行多次测试而得到测试曲线，确定各个温度分别对应的目标测试曲线；其中，该目标测试曲线表征测试过程中电压随电荷状态变化而变化的情况。The
识别模块1004，用于对于每个温度，对与相应温度对应的目标测试曲线进行曲线斜率识别，得到相应温度下与目标测试曲线对应的曲线斜率数据。The
第二确定模块1006，用于对于每个温度，基于相应温度下与目标测试曲线对应的曲线斜率数据，确定相应温度下与目标测试曲线对应的电荷状态间隔，其中，该电荷状态间隔表征脉冲测试过程中电荷状态的调整值。The
第三确定模块1008，用于对于每个温度，确定与相应温度对应的多个脉冲电流，并基于所述相应温度下与目标测试曲线对应的电荷状态间隔、脉冲电流，确定相应温度下脉冲时间，所述脉冲时间用于指示所述充放电设备进行脉冲测试。The
获取模块1010，用于获取经充放电设备基于该脉冲时间对目标电池进行脉冲测试得到的，且与各个温度分别对应的电压变化曲线，该电压变化曲线表征电压随脉冲电流和时间的变化情况。The obtaining
拟合模块1012，用于基于该与各个温度分别对应的电压变化曲线，通过预先构建的等效电路模型进行参数拟合，得到与该目标电池对应的电池模型的参数。The
在一个实施例中，第一确定模块1002，用于对于每个温度，在当前测试次数为第一测试次数的情况下，获取相应温度下第一数量个的第一测试曲线；其中，该第一数量个由该第一测试次数确定。对于每个温度，确定相应温度下各个第一测试曲线分别对应的第一容量，并基于该相应温度下各个第一测试曲线分别对应的第一容量，判断多个第一容量中是否存在目标容量。对于每个温度，在多个第一容量中不存在目标容量的情况下，继续采集，直至当前测试次数为第二测试次数。对于每个温度，获取相应温度下第二数量个的第二测试曲线；其中第二数量个由该第二测试次数确定。对于每个温度，确定相应温度下各个第二测试曲线分别对应的第二容量，并基于多个第二容量，确定第二容量平均值。对于每个温度，将相应温度下各个第二容量分别与该第二容量平均值进行比较，得到相应温度下与各个第二容量对应的第二容量比较结果。对于每个温度，基于该相应温度下与各个第二容量对应的第二容量比较结果，从多个第二容量中确定目标容量，并将该目标容量对应的第二测试曲线，作为相应温度下的目标测试曲线。In one embodiment, the
在一个实施例中，第一确定模块1002，用于基于该相应温度下各个第一测试曲线分别对应的第一容量，确定容量最大值、容量最小值、以及第一容量平均值。将该容量最大值和该容量最小值之间的差值与该第一容量平均值进行比较，得到差值比较结果。在差值比较结果小于差值阈值的情况下，确定多个第一容量中存在目标容量，在差值比较结果大于或等于差值阈值情况下，确定多个第一容量中不存在目标容量。In one embodiment, the
在一个实施例中，第一确定模块1002，用于对于每个温度，在多个第一容量中存在目标容量的情况下，基于相应温度下各个第一测试曲线对应的第一容量，确定相应温度下第一容量平均值。对于每个温度，将相应温度下各个第一容量，分别与该相应温度下第一容量平均值进行比较，得到相应温度下与各个第一容量对应的第一容量比较结果。对于每个温度，基于该相应温度下与各个第一容量对应的第一容量比较结果，从多个第一容量中确定目标容量，并将该目标容量对应的第一测试曲线，作为相应温度下的目标测试曲线。In one embodiment, the
在一个实施例中，识别模块1004，用于对于每个温度，通过对与相应温度对应的目标测试曲线进行一阶求导，确定相应温度下与目标测试曲线对应的一阶导数曲线。基于该相应温度下与目标测试曲线对应的一阶导数曲线，确定相应温度下与目标测试曲线对应的曲线斜率数据。对于每个温度，将相应温度下与目标测试曲线对应的曲线斜率数据，与斜率阈值进行比较，得到相应温度下与目标测试曲线对应的多个斜率比较结果。对于相应温度下与目标测试曲线对应的多个斜率比较结果，确定相应温度下与目标测试曲线对应的电荷状态间隔。In one embodiment, the
在一个实施例中，该第三确定模块1008，用于对于每个温度，基于该与相应温度对应的多个脉冲电流、以及与相应温度对应的电荷状态间隔，通过脉冲时间计算公式，确定相应温度下与各个脉冲电流分别对应的脉冲时间。In one embodiment, the third determining
上述电池模型参数的获取装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。Each module in the above-mentioned device for acquiring battery model parameters may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
在一个实施例中，提供了一种计算机设备，该计算机设备可以是服务器，其内部结构图可以如图11所示。该计算机设备包括处理器、存储器、输入/输出接口(Input/Output，简称I/O)和通信接口。其中，处理器、存储器和输入/输出接口通过系统总线连接，通信接口通过输入/输出接口连接到系统总线。其中，该计算机设备的处理器用于提供计算和控制能力。该计算机设备的存储器包括非易失性存储介质和内存储器。该非易失性存储介质存储有操作系统、计算机程序和数据库。该内存储器为非易失性存储介质中的操作系统和计算机程序的运行提供环境。该计算机设备的数据库用于存储电池模型参数的获取数据。该计算机设备的输入/输出接口用于处理器与外部设备之间交换信息。该计算机设备的通信接口用于与外部的终端通过网络连接通信。该计算机程序被处理器执行时以实现一种电池模型参数的获取方法。In one embodiment, a computer device is provided, and the computer device may be a server, and its internal structure diagram may be as shown in FIG. 11 . The computer device includes a processor, a memory, an input/output interface (Input/Output, I/O for short) and a communication interface. Wherein, the processor, the memory and the input/output interface are connected through the system bus, and the communication interface is connected to the system bus through the input/output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes non-volatile storage media and internal memory. The nonvolatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the execution of the operating system and computer programs in the non-volatile storage medium. The database of the computer equipment is used to store the acquired data of battery model parameters. The input/output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for acquiring battery model parameters is realized.
本领域技术人员可以理解，图11中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的计算机设备的限定，具体的计算机设备可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。Those skilled in the art can understand that the structure shown in FIG. 11 is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer equipment to which the solution of the present application is applied. Include more or fewer components than shown in the figures, or combine certain components, or have a different arrangement of components.
在一个实施例中，还提供了一种计算机设备，包括存储器和处理器，存储器中存储有计算机程序，该处理器执行计算机程序时实现上述各方法实施例中的步骤。In one embodiment, a computer device is also provided, including a memory and a processor, where a computer program is stored in the memory, and the processor implements the steps in the foregoing method embodiments when the processor executes the computer program.
在一个实施例中，提供了一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现上述各方法实施例中的步骤。In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, implements the steps in the foregoing method embodiments.
在一个实施例中，提供了一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现上述各方法实施例中的步骤。In one embodiment, a computer program product is provided, including a computer program, which implements the steps in each of the foregoing method embodiments when the computer program is executed by a processor.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的计算机程序可存储于一非易失性计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、数据库或其它介质的任何引用，均可包括非易失性和易失性存储器中的至少一种。非易失性存储器可包括只读存储器(Read-OnlyMemory，ROM)、磁带、软盘、闪存、光存储器、高密度嵌入式非易失性存储器、阻变存储器(ReRAM)、磁变存储器(Magnetoresistive Random Access Memory，MRAM)、铁电存储器(Ferroelectric Random Access Memory，FRAM)、相变存储器(Phase Change Memory，PCM)、石墨烯存储器等。易失性存储器可包括随机存取存储器(Random Access Memory，RAM)或外部高速缓冲存储器等。作为说明而非局限，RAM可以是多种形式，比如静态随机存取存储器(Static Random Access Memory，SRAM)或动态随机存取存储器(Dynamic RandomAccess Memory，DRAM)等。本申请所提供的各实施例中所涉及的数据库可包括关系型数据库和非关系型数据库中至少一种。非关系型数据库可包括基于区块链的分布式数据库等，不限于此。本申请所提供的各实施例中所涉及的处理器可为通用处理器、中央处理器、图形处理器、数字信号处理器、可编程逻辑器、基于量子计算的数据处理逻辑器等，不限于此。Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage In the medium, when the computer program is executed, it may include the processes of the above-mentioned method embodiments. Wherein, any reference to a memory, a database or other media used in the various embodiments provided in this application may include at least one of a non-volatile memory and a volatile memory. Non-volatile memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetic variable memory (Magnetoresistive Random Memory) Access Memory, MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory may include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration and not limitation, the RAM may be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM). The database involved in the various embodiments provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a blockchain-based distributed database, etc., but is not limited thereto. The processors involved in the various embodiments provided in this application may be general-purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, data processing logic devices based on quantum computing, etc., and are not limited to this.
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features It is considered to be the range described in this specification.
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请的保护范围应以所附权利要求为准。The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the present application should be determined by the appended claims.
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