CN113917343B - Battery module state detection method and device, electronic equipment and storage medium - Google Patents
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Abstract
本申请提供一种电池模组状态检测方法、装置、电子设备及存储介质，该方法包括：获取多个待检测数据集；其中，待检测数据集包括待检测的电池模组在预设检测周期内的充电数据，充电数据包括电池模组中各电芯在每个时刻的电压值；根据各待检测数据集，确定电池模组在各检测周期内的电芯间最大压差值；根据相邻检测周期的电芯间最大压差值变化情况，确定电池模组的状态检测结果。上述方案提供的方法，通过根据相邻检测周期的电芯间最大压差值变化情况所反映的电芯在充电状态下的电压变化情况，确定电池模组的状态检测结果，即保证了状态检测的客观性，也考虑了电芯间最大压差值波动情况对状态检测结果的影响，提高了状态检测结果的可靠性。
The present application provides a battery module state detection method, device, electronic equipment, and storage medium, the method including: acquiring a plurality of data sets to be detected; The charging data in the battery module, the charging data includes the voltage value of each cell in the battery module at each moment; according to each data set to be tested, determine the maximum voltage difference between the cells of the battery module in each detection cycle; according to the phase The change of the maximum pressure difference value between the battery cells in the adjacent detection cycle determines the state detection result of the battery module. The method provided by the above scheme determines the state detection result of the battery module by determining the state detection result of the battery module according to the voltage change of the battery cell in the charging state reflected by the change of the maximum voltage difference value between the cells in adjacent detection cycles, that is, the state detection is ensured. It also considers the influence of the fluctuation of the maximum pressure difference between the cells on the state detection results, which improves the reliability of the state detection results.
Description
技术领域technical field
本申请涉及电池检测技术领域，尤其涉及一种电池模组状态检测方法、装置、电子设备及存储介质。The present application relates to the technical field of battery detection, and in particular to a battery module state detection method, device, electronic equipment and storage medium.
背景技术Background technique
为了解决日益严重的汽车尾气排放带来的环保问题，汽车厂商开始大力度的发展新能源汽车技术。针对新能源电动汽车，随着车辆上的电池不断的充放电，车载电池模组的电芯之间的差异慢慢体现出来，因此，为了保证车辆电池模组的安全性，需要对电池模组的状态进行检测。In order to solve the environmental protection problems caused by the increasingly serious automobile exhaust emissions, automobile manufacturers have begun to vigorously develop new energy vehicle technology. For new energy electric vehicles, with the continuous charging and discharging of the battery on the vehicle, the differences between the cells of the vehicle battery module are gradually reflected. Therefore, in order to ensure the safety of the vehicle battery module, it is necessary to status is checked.
在现有技术中，通常是监控电池模组在充电状态下的电芯间压差，若电芯间压差大于预设的阈值，则确定电池模组状态为异常。In the prior art, it is usually to monitor the voltage difference between the cells of the battery module in the charging state, and if the voltage difference between the cells is greater than a preset threshold, it is determined that the state of the battery module is abnormal.
但是，由于在电池模组处于充电状态时，电芯的电压值会发生一定的浮动，若基于现有技术进行电池模组的状态检测，可能会出现误报警或漏报警的情况，导致状态检测结果的可靠性较低。However, when the battery module is in the charging state, the voltage value of the battery cells will fluctuate to a certain extent, if the state detection of the battery module is based on the existing technology, false alarms or missed alarms may occur, resulting in state detection The reliability of the results is low.
发明内容Contents of the invention
本申请提供一种电池模组状态检测方法、装置、电子设备及存储介质，以解决现有技术得到的状态检测的可靠性低等缺陷。The present application provides a battery module state detection method, device, electronic equipment and storage medium to solve the defects of low reliability of state detection obtained in the prior art.
本申请第一个方面提供一种电池模组状态检测方法，包括：The first aspect of the present application provides a battery module state detection method, including:
获取多个待检测数据集；其中，所述待检测数据集包括待检测的电池模组在预设检测周期内的充电数据，所述充电数据包括所述电池模组中各电芯在每个时刻的电压值；Acquiring a plurality of data sets to be tested; wherein, the data sets to be tested include charging data of the battery module to be tested within a preset detection period, and the charging data includes the charging data of each battery cell in the battery module The voltage value at the moment;
根据各所述待检测数据集，确定所述电池模组在各检测周期内的电芯间最大压差值；According to each of the data sets to be detected, determine the maximum voltage difference between the cells of the battery module in each detection cycle;
根据相邻检测周期的电芯间最大压差值变化情况，确定所述电池模组的状态检测结果。The state detection result of the battery module is determined according to the variation of the maximum voltage difference between the cells in adjacent detection periods.
可选的，所述根据相邻检测周期的电芯间最大压差值变化情况，确定所述电池模组的状态检测结果，包括：Optionally, the determination of the state detection result of the battery module according to the variation of the maximum voltage difference between cells in adjacent detection cycles includes:
判断所述相邻检测周期的电芯间最大压差值的变化值是否达到预设变化阈值；Judging whether the change value of the maximum pressure difference value between the cells in the adjacent detection cycle reaches a preset change threshold;
若是，则获取所述相邻检测周期的电芯间最大压差值的发生时刻，根据所述相邻检测周期的电芯间最大压差值的变化值和该电芯间最大压差值的发生时刻，确定所述电池模组的状态检测结果。If so, obtain the occurrence time of the maximum differential pressure value between the cells in the adjacent detection cycle, according to the change value of the maximum differential pressure value between the cells in the adjacent detection cycle and the maximum differential pressure value between the cells At the time of occurrence, determine the state detection result of the battery module.
可选的，所述根据所述相邻检测周期的电芯间最大压差值的变化值和该电芯间最大压差值的发生时刻，确定所述电池模组的状态检测结果，包括：Optionally, the determination of the state detection result of the battery module according to the change value of the maximum pressure difference value between the cells in the adjacent detection cycle and the occurrence time of the maximum pressure difference value between the cells includes:
根据所述相邻检测周期的电芯间最大压差值的发生时刻，确定压差变化时长；Determine the duration of the pressure difference change according to the occurrence time of the maximum pressure difference value between the cells in the adjacent detection cycle;
根据所述相邻检测周期的电芯间最大压差值的变化值和所述压差变化时长之间的比值，确定所述电池模组的压差变化率；Determine the rate of change of the pressure difference of the battery module according to the ratio between the change value of the maximum pressure difference value between the cells in the adjacent detection cycle and the time length of the change of the pressure difference;
判断所述压差变化率是否大于预设的变化率阈值；judging whether the change rate of the pressure difference is greater than a preset change rate threshold;
若是，则确定所述电池模组的状态检测结果为异常。If so, it is determined that the state detection result of the battery module is abnormal.
可选的，所述方法还包括：Optionally, the method also includes:
当所述相邻检测周期的电芯间最大压差值的变化值未达到预设变化阈值时，或当所述压差变化率不大于预设的变化率阈值时，确定所述电池模组的状态检测结果为正常。When the change value of the maximum pressure difference value between the cells in the adjacent detection period does not reach the preset change threshold, or when the change rate of the pressure difference is not greater than the preset change rate threshold, determine that the battery module The status check result of is normal.
可选的，当确定所述电池模组的状态检测结果为异常时，所述方法还包括：Optionally, when it is determined that the state detection result of the battery module is abnormal, the method further includes:
生成所述电池模组的报警信息，所述报警信息包括异常发生时间。Alarm information of the battery module is generated, where the alarm information includes an abnormality occurrence time.
可选的，所述获取多个待检测数据集，包括：Optionally, the acquisition of multiple data sets to be detected includes:
获取待检测的电池模组在任一充电周期内各电芯的充电数据；Obtain the charging data of each battery cell in any charging cycle of the battery module to be tested;
按照预设检测周期，对所述充电数据进行集合划分，以将所述充电数据划分为多个待检测数据集。According to a preset detection cycle, the charging data is divided into sets, so as to divide the charging data into a plurality of data sets to be detected.
可选的，所述按照预设的检测周期，对所述充电数据进行集合划分，包括：Optionally, the group division of the charging data according to the preset detection cycle includes:
获取所述电池模组的在该充电周期内各时刻的充电量；Acquiring the charging amount of the battery module at each moment in the charging cycle;
根据电池模组的在该充电周期内各时刻的充电量，确定所述电池模组处于稳定状态的时间段；According to the charging capacity of the battery module at each moment in the charging cycle, determine the time period during which the battery module is in a stable state;
将该时间段内的充电数据作为目标充电数据；The charging data within the time period is used as the target charging data;
按照预设的检测周期，对所述目标充电数据进行集合划分。According to a preset detection cycle, the target charging data is grouped and divided.
本申请第二个方面提供一种电池模组状态检测装置，包括：The second aspect of the present application provides a battery module state detection device, including:
获取模块，获取多个待检测数据集；其中，所述待检测数据集包括待检测的电池模组在预设检测周期内的充电数据，所述充电数据包括所述电池模组中各电芯在每个时刻的电压值；An acquisition module, which acquires a plurality of data sets to be detected; wherein, the data sets to be detected include charging data of the battery module to be detected within a preset detection period, and the charging data includes each battery cell in the battery module The voltage value at each moment;
确定模块，用于根据各所述待检测数据集，确定所述电池模组在各检测周期内的电芯间最大压差值；A determination module, configured to determine the maximum voltage difference between cells of the battery module in each detection cycle according to each of the data sets to be detected;
检测模块，用于根据相邻检测周期的电芯间最大压差值变化情况，确定所述电池模组的状态检测结果。The detection module is used to determine the state detection result of the battery module according to the variation of the maximum voltage difference between the cells in adjacent detection cycles.
可选的，所述检测模块，具体用于：Optionally, the detection module is specifically used for:
判断所述相邻检测周期的电芯间最大压差值的变化值是否达到预设变化阈值；Judging whether the change value of the maximum pressure difference value between the cells in the adjacent detection cycle reaches a preset change threshold;
若是，则获取所述相邻检测周期的电芯间最大压差值的发生时刻，根据所述相邻检测周期的电芯间最大压差值的变化值和该电芯间最大压差值的发生时刻，确定所述电池模组的状态检测结果。If so, obtain the occurrence time of the maximum differential pressure value between the cells in the adjacent detection cycle, according to the change value of the maximum differential pressure value between the cells in the adjacent detection cycle and the maximum differential pressure value between the cells At the time of occurrence, determine the state detection result of the battery module.
可选的，所述检测模块，具体用于：Optionally, the detection module is specifically used for:
根据所述相邻检测周期的电芯间最大压差值的发生时刻，确定压差变化时长；Determine the duration of the pressure difference change according to the occurrence time of the maximum pressure difference value between the cells in the adjacent detection cycle;
根据所述相邻检测周期的电芯间最大压差值的变化值和所述压差变化时长之间的比值，确定所述电池模组的压差变化率；Determine the rate of change of the pressure difference of the battery module according to the ratio between the change value of the maximum pressure difference value between the cells in the adjacent detection cycle and the time length of the change of the pressure difference;
判断所述压差变化率是否大于预设的变化率阈值；judging whether the change rate of the pressure difference is greater than a preset change rate threshold;
若是，则确定所述电池模组的状态检测结果为异常。If so, it is determined that the state detection result of the battery module is abnormal.
可选的，所述检测模块，还用于：Optionally, the detection module is also used for:
当所述相邻检测周期的电芯间最大压差值的变化值未达到预设变化阈值时，或当所述压差变化率不大于预设的变化率阈值时，确定所述电池模组的状态检测结果为正常。When the change value of the maximum pressure difference value between the cells in the adjacent detection period does not reach the preset change threshold, or when the change rate of the pressure difference is not greater than the preset change rate threshold, determine that the battery module The status check result of is normal.
可选的，当确定所述电池模组的状态检测结果为异常时，所述检测模块，还用于：Optionally, when it is determined that the state detection result of the battery module is abnormal, the detection module is further configured to:
生成所述电池模组的报警信息，所述报警信息包括异常发生时间。Alarm information of the battery module is generated, where the alarm information includes an abnormality occurrence time.
可选的，所述获取模块，具体用于：Optionally, the acquiring module is specifically used for:
获取待检测的电池模组在任一充电周期内各电芯的充电数据；Obtain the charging data of each battery cell in any charging cycle of the battery module to be tested;
按照预设检测周期，对所述充电数据进行集合划分，以将所述充电数据划分为多个待检测数据集。According to a preset detection cycle, the charging data is divided into sets, so as to divide the charging data into a plurality of data sets to be detected.
可选的，所述获取模块，具体用于：Optionally, the acquiring module is specifically used for:
获取所述电池模组的在该充电周期内各时刻的充电量；Acquiring the charging amount of the battery module at each moment in the charging cycle;
根据电池模组的在该充电周期内各时刻的充电量，确定所述电池模组处于稳定状态的时间段；According to the charging capacity of the battery module at each moment in the charging cycle, determine the time period during which the battery module is in a stable state;
将该时间段内的充电数据作为目标充电数据；The charging data within the time period is used as the target charging data;
按照预设的检测周期，对所述目标充电数据进行集合划分。According to a preset detection cycle, the target charging data is grouped and divided.
本申请第三个方面提供一种电子设备，包括：至少一个处理器和存储器；A third aspect of the present application provides an electronic device, including: at least one processor and a memory;
所述存储器存储计算机执行指令；the memory stores computer-executable instructions;
所述至少一个处理器执行所述存储器存储的计算机执行指令，使得所述至少一个处理器执行如上第一个方面以及第一个方面各种可能的设计所述的方法。The at least one processor executes the computer-executed instructions stored in the memory, so that the at least one processor executes the method described in the above first aspect and various possible designs of the first aspect.
本申请第四个方面提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当处理器执行所述计算机执行指令时，实现如上第一个方面以及第一个方面各种可能的设计所述的方法。The fourth aspect of the present application provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and when the processor executes the computer-executable instructions, the above first aspect and the first Aspects of various possible designs of the described method.
本申请技术方案，具有如下优点：The technical solution of the present application has the following advantages:
本申请提供一种电池模组状态检测方法、装置、电子设备及存储介质，该方法包括：获取多个待检测数据集；其中，待检测数据集包括待检测的电池模组在预设检测周期内的充电数据，充电数据包括电池模组中各电芯在每个时刻的电压值；根据各待检测数据集，确定电池模组在各检测周期内的电芯间最大压差值；根据相邻检测周期的电芯间最大压差值变化情况，确定电池模组的状态检测结果。上述方案提供的方法，通过根据相邻检测周期的电芯间最大压差值变化情况所反映的电芯在充电状态下的电压变化情况，确定电池模组的状态检测结果，即保证了状态检测的客观性，也考虑了电芯间最大压差值波动情况对状态检测结果的影响，提高了状态检测结果的可靠性。The present application provides a battery module state detection method, device, electronic equipment and storage medium, the method comprising: acquiring multiple data sets to be detected; The charging data in the battery module includes the voltage value of each cell in the battery module at each moment; according to each data set to be detected, determine the maximum voltage difference between the cells of the battery module in each detection cycle; according to the phase The change of the maximum pressure difference value between the battery cells in the adjacent detection cycle determines the state detection result of the battery module. The method provided by the above scheme determines the state detection result of the battery module by determining the state detection result of the battery module according to the voltage change of the battery cell in the charging state reflected by the change of the maximum voltage difference value between the cells in adjacent detection cycles, that is, the state detection is ensured. It also considers the influence of the fluctuation of the maximum pressure difference between the cells on the state detection results, which improves the reliability of the state detection results.
附图说明Description of drawings
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application, and those skilled in the art can also obtain other drawings based on these drawings.
图1为本申请实施例基于的电池模组状态检测系统的结构示意图；FIG. 1 is a schematic structural diagram of a battery module state detection system based on an embodiment of the present application;
图2为本申请实施例提供的电池模组状态检测方法的流程示意图；FIG. 2 is a schematic flowchart of a battery module state detection method provided in an embodiment of the present application;
图3为本申请实施例提供的示例性的电池模组状态检测方法的流程示意图；FIG. 3 is a schematic flowchart of an exemplary battery module state detection method provided in an embodiment of the present application;
图4为本申请实施例提供的电池模组状态检测装置的结构示意图；FIG. 4 is a schematic structural diagram of a battery module state detection device provided in an embodiment of the present application;
图5为本申请实施例提供的电子设备的结构示意图。FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
通过上述附图，已示出本申请明确的实施例，后文中将有更详细的描述。这些附图和文字描述并不是为了通过任何方式限制本公开构思的范围，而是通过参考特定实施例为本领域技术人员说明本申请的概念。By means of the above drawings, specific embodiments of the present application have been shown, which will be described in more detail hereinafter. These drawings and written description are not intended to limit the scope of the disclosed concept in any way, but to illustrate the concept of the application for those skilled in the art by referring to specific embodiments.
具体实施方式Detailed ways
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。在以下各实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the descriptions of the following embodiments, "plurality" means two or more, unless otherwise specifically defined.
下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。下面将结合附图，对本发明实施例进行描述。The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below in conjunction with the accompanying drawings.
首先，对本申请所基于的电池模组状态检测系统的结构进行说明：First, the structure of the battery module status detection system based on this application is described:
本申请实施例提供的电池模组状态检测方法、装置、电子设备及存储介质，适用于对新能源电动汽车上的电池模组进行状态检测。如图1所示，为本申请实施例基于的电池模组状态检测系统的结构示意图，主要包括电池模组、数据存储装置及电池模组状态检测装置，其中，电池模组的历史充电数据均存储在数据存储装置中。具体地，电池模组状态检测装置从数据存储装置中获取充电数据，根据得到的充电数据，确定电池模组的状态检测结果。The battery module state detection method, device, electronic equipment, and storage medium provided in the embodiments of the present application are suitable for state detection of a battery module on a new energy electric vehicle. As shown in Figure 1, it is a schematic structural diagram of the battery module state detection system based on the embodiment of the present application, which mainly includes a battery module, a data storage device and a battery module state detection device, wherein the historical charging data of the battery module are all stored in the data storage device. Specifically, the battery module state detection device acquires charging data from the data storage device, and determines the state detection result of the battery module according to the obtained charging data.
本申请实施例提供了一种电池模组状态检测方法，用于对新能源电动汽车上的电池模组进行状态检测。本申请实施例的执行主体为电子设备，比如服务器、台式电脑、笔记本电脑、平板电脑及其他可用于分析电池模组的充电数据的电子设备。An embodiment of the present application provides a method for detecting the state of a battery module, which is used for detecting the state of a battery module on a new energy electric vehicle. The execution subject of the embodiment of the present application is an electronic device, such as a server, a desktop computer, a notebook computer, a tablet computer and other electronic devices that can be used to analyze the charging data of the battery module.
如图2所示，为本申请实施例提供的电池模组状态检测方法的流程示意图，该方法包括：As shown in Figure 2, it is a schematic flow chart of the battery module state detection method provided in the embodiment of the present application. The method includes:
步骤201，获取多个待检测数据集。Step 201, acquiring multiple data sets to be detected.
其中，待检测数据集包括待检测的电池模组在预设检测周期内的充电数据，充电数据包括电池模组中各电芯在每个时刻的电压值。Wherein, the data set to be detected includes charging data of the battery module to be tested within a preset detection period, and the charging data includes the voltage value of each battery cell in the battery module at each moment.
步骤202，根据各待检测数据集，确定电池模组在各检测周期内的电芯间最大压差值。Step 202, according to each data set to be tested, determine the maximum voltage difference value between cells of the battery module in each testing period.
需要说明的是，一个电池模组包括多个电芯，电芯间压差值是指某时刻下，该电池模组内各个电芯之间的压差值。例如，若电池模组包括3个电芯，分别为第一电芯、第二电芯和第三电芯，则可以得到某时刻的第一电芯与第二电芯之间的电芯间电压差V1-V2，第一电芯与第三电芯之间的电芯间电压差V1-V3，第二电芯与第三电芯之间的电芯间电压差V2-V3。It should be noted that a battery module includes multiple cells, and the voltage difference between the cells refers to the voltage difference between the cells in the battery module at a certain moment. For example, if the battery module includes three cells, namely the first cell, the second cell, and the third cell, the distance between the first cell and the second cell at a certain moment can be obtained. Voltage difference V 1 -V 2 , inter-cell voltage difference between the first cell and the third cell V 1 -V 3 , inter-cell voltage difference V 2 between the second cell and the third cell -V 3 .
具体地，待检测数据集是按照检测周期划分的，针对每个待检测数据集，可以按照充电数据对应的时刻，计算该检测周期内各时刻下的电芯间压差值，从而确定检测周期内的电芯间最大压差值。Specifically, the data set to be detected is divided according to the detection cycle. For each data set to be detected, the voltage difference between the cells at each time in the detection cycle can be calculated according to the time corresponding to the charging data, so as to determine the detection cycle The maximum pressure difference between the cells in the battery.
步骤203，根据相邻检测周期的电芯间最大压差值变化情况，确定电池模组的状态检测结果。Step 203, determine the state detection result of the battery module according to the variation of the maximum voltage difference between the cells in adjacent detection cycles.
需要说明的是，相邻检测周期具体指相邻的两个检测周期，这两个检测周期按照时间划分，可以分别为时间排序在前的第一检测周期和时间排序在后的第二检测周期。It should be noted that adjacent detection cycles specifically refer to two adjacent detection cycles, which are divided according to time, and can be respectively the first detection cycle sorted in front of time and the second detection cycle sorted in time behind .
具体地，可以根据第二检测周期的电芯间最大压差值与第一检测周期的电芯间最大压差值之间的变化值或变化率等，确定电池模组的状态检测结果。其中，电池模组的状态检测结果分为异常和正常。Specifically, the state detection result of the battery module can be determined according to the change value or rate of change between the maximum voltage difference between cells in the second detection cycle and the maximum voltage difference between cells in the first detection cycle. Among them, the state detection results of the battery module are divided into abnormal and normal.
具体地，在一实施例中，为了进一步提高状态检测结果的可靠性，根据相邻检测周期的电芯间最大压差值变化情况，确定电池模组的状态检测结果，包括：Specifically, in an embodiment, in order to further improve the reliability of the state detection result, the state detection result of the battery module is determined according to the change of the maximum voltage difference value between the cells in adjacent detection cycles, including:
步骤2031，判断相邻检测周期的电芯间最大压差值的变化值是否达到预设变化阈值；Step 2031, judging whether the change value of the maximum pressure difference between cells in adjacent detection cycles reaches a preset change threshold;
步骤2032，若是，则获取该相邻检测周期的电芯间最大压差值的发生时刻，根据相邻检测周期的电芯间最大压差值的变化值和该电芯间最大压差值的发生时刻，确定电池模组的状态检测结果。Step 2032, if yes, then obtain the occurrence time of the maximum pressure difference value between the cells in the adjacent detection cycle, according to the change value of the maximum pressure difference value between the cells in the adjacent detection cycle and the maximum pressure difference value between the cells At the time of occurrence, determine the state detection result of the battery module.
需要说明的是，相邻检测周期的电芯间最大压差值的变化值具体指这两个检测周期的电芯间最大压差值之间的差值，体现了电池模组在这两个周期内的电芯间最大压差值的变化情况。It should be noted that the change value of the maximum voltage difference between cells in adjacent detection cycles specifically refers to the difference between the maximum voltage difference between cells in these two detection cycles, which reflects that the battery module is in the two detection cycles. Changes in the maximum pressure difference between cells within a cycle.
示例性的，若相邻检测周期的电芯间最大压差值的变化值ΔV1≥6mv，即达到了预设变化阈值(6mv)，则结合这两个电芯间最大压差值的发生时刻，分析电池模组的电芯间最大压差值之间的变化率，最后根据得到的变化率，确定电池模组的状态检测结果。Exemplarily, if the change value ΔV1≥6mv of the maximum voltage difference value between the cells in adjacent detection cycles, that is, the preset change threshold (6mv) is reached, then combine the occurrence time of the maximum voltage difference value between the two cells , analyze the rate of change between the maximum voltage difference between the battery cells of the battery module, and finally determine the state detection result of the battery module according to the obtained rate of change.
具体地，在一实施例中，可以根据相邻检测周期的电芯间最大压差值的发生时刻，确定压差变化时长；根据相邻检测周期的电芯间最大压差值的变化值和压差变化时长之间的比值，确定电池模组的压差变化率；判断压差变化率是否大于预设的变化率阈值；若是，则确定电池模组的状态检测结果为异常。Specifically, in an embodiment, the duration of the pressure difference change can be determined according to the occurrence time of the maximum pressure difference between cells in adjacent detection cycles; according to the change value and Determine the rate of change of the differential pressure of the battery module by the ratio between the duration of the differential pressure change; determine whether the rate of change of the differential pressure is greater than a preset rate of change threshold; if so, determine that the state detection result of the battery module is abnormal.
具体地，可以根据如下公式计算压差变化率：Specifically, the differential pressure change rate can be calculated according to the following formula:
δ＝α*(ΔV1/Δt1)δ=α*(ΔV1/Δt1)
其中，δ表示压差变化率，Δt1表示压差变化时长，具体为相邻检测周期的电芯间最大压差值的发生时刻之间的差值，α表示加权系数，例如，当当前的检测周期为1小时时，可以令α＝24，此时对应的变化率阈值为1mv/d，d表示天。Among them, δ represents the rate of change of pressure difference, Δt1 represents the duration of pressure difference change, specifically the difference between the occurrence times of the maximum pressure difference between cells in adjacent detection cycles, and α represents the weighting coefficient, for example, when the current detection cycle When the period is 1 hour, α=24 can be set, and the corresponding change rate threshold at this time is 1mv/d, and d represents a day.
具体地，当变化值达到预设变化阈值时，可以初步判断该电池模组可能存在异常，为了避免出现误报警的情况，本申请实施例进一步分析电芯间最大压差值的变化率，若此时变化率较小，即小于预设的变化率阈值，表示电芯的状态较为稳定，则依然确定该电池模组为正常状态。Specifically, when the change value reaches the preset change threshold, it can be preliminarily judged that the battery module may be abnormal. In order to avoid false alarms, the embodiment of the present application further analyzes the change rate of the maximum voltage difference between the cells. If At this time, the change rate is small, that is, less than the preset change rate threshold, indicating that the state of the battery cell is relatively stable, and it is still determined that the battery module is in a normal state.
进一步地，在一实施例中，当确定电池模组的状态检测结果为异常时，方法还包括：Further, in an embodiment, when it is determined that the state detection result of the battery module is abnormal, the method further includes:
生成电池模组的报警信息，报警信息包括异常发生时间。Generate the alarm information of the battery module, and the alarm information includes the time when the abnormality occurred.
需要说明的是，异常发生时刻对应上述第二检测周期中的电芯间最大压差值的发生时刻。It should be noted that the abnormality occurrence time corresponds to the occurrence time of the maximum pressure difference between the cells in the second detection cycle.
相反地，在一实施例中，当相邻检测周期的电芯间最大压差值的变化值未达到预设变化阈值时，或当压差变化率不大于预设的变化率阈值时，确定电池模组的状态检测结果为正常。Conversely, in one embodiment, when the change value of the maximum differential pressure value between cells in adjacent detection periods does not reach the preset change threshold, or when the change rate of the pressure difference is not greater than the preset change rate threshold, it is determined that The status detection result of the battery module is normal.
其中，若电池模组的状态检测结果为正常，则可以不进行检测结果的报出。Wherein, if the state detection result of the battery module is normal, the detection result may not be reported.
在上述实施例的基础上，作为一种可实施的方式，在上述实施例的基础上，在一实施例中，获取多个待检测数据集，包括：On the basis of the above embodiments, as an implementable manner, on the basis of the above embodiments, in one embodiment, multiple data sets to be detected are obtained, including:
步骤2011，获取待检测的电池模组在任一充电周期内各电芯的充电数据；Step 2011, obtaining the charging data of each battery cell in any charging cycle of the battery module to be tested;
步骤2012，按照预设的检测周期，对充电数据进行集合划分，以将充电数据划分为多个待检测数据集。Step 2012, divide the charging data into sets according to the preset detection period, so as to divide the charging data into multiple data sets to be detected.
其中，充电周期可以为“天”，具体可以获取待检测的电池模组前一天的充电数据，检测周期可以为“小时”，具体可以以1小时为检测周期，将得到的前一天的充电数据划分为多个待检测数据集。Among them, the charging cycle can be "days", specifically, the charging data of the battery module to be tested can be obtained from the previous day, and the detection cycle can be "hours", specifically, the detection cycle can be 1 hour, and the charging data of the previous day can be obtained Divided into multiple data sets to be tested.
具体地，在一实施例中，由于电池模组刚刚进入充电状态时的状态不稳定，因此，为了进一步保证状态检测结果的可靠性，可以获取电池模组的在该充电周期内各时刻的充电量；根据电池模组的在该充电周期内各时刻的充电量，确定电池模组处于稳定状态的时间段；将该时间段内的充电数据作为目标充电数据；按照预设的检测周期，对目标充电数据进行集合划分。Specifically, in one embodiment, since the state of the battery module is unstable when it just enters the charging state, in order to further ensure the reliability of the state detection results, the charging status of the battery module at each moment in the charging cycle can be obtained. According to the charging amount of the battery module at each moment in the charging cycle, determine the time period when the battery module is in a stable state; use the charging data in this time period as the target charging data; The target charging data is divided into sets.
具体地，当电池模组的充电量处于[80％,90％]区间时，可以确定电池模组处于稳定状态，因此可以将满足条件的这段时间确定为电池模组处于稳定状态的时间段。Specifically, when the charging capacity of the battery module is in the [80%, 90%] interval, it can be determined that the battery module is in a stable state, so the period of time that meets the condition can be determined as the time period in which the battery module is in a stable state .
示例性的，如图3所示，为本申请实施例提供的示例性的电池模组状态检测方法的流程示意图。其中，电池模组中的电芯在整个生命周期内都会向车辆控制器发送报文，因此可以通过获取其发送的报文，判断其是否处于充电状态，具体可以查找报文中的充电标识以及电流这两个字段，例如当一条报文的充电状态为充电，电池模组充电电量处于[80％,90％]区间，电流小于0并且电流大于-51.480(小于0.33C)，则可以确定这条报文是电芯处于充电状态时发送的报文。需要说明的是，电芯在充电过程中的电流是负数，小于0且大于-51.480。然后，找到第一个充电数据，并令其为firsttime，后面每一帧充电数据与firsttime在一小时(检测周期)内的为第一个充电循环的数据，第二充电循环起始第一条数据为第一个充电循环最后一条数据的后一条数据为firsttime2，然后在firsttime2后面在一小时内的充电数据为第二个充电循环的数据，以此类推，可以给每帧充电数据划分充电循环数据(待检测数据集)。本申请实施例提供的电池模组状态检测方法具体可以基于javaspark实现，如图3所示的方法为如图2所示的方法的一种示例性的实现方式，二者实现原理相同，在此不再赘述。Exemplarily, as shown in FIG. 3 , it is a schematic flowchart of an exemplary battery module state detection method provided in the embodiment of the present application. Among them, the battery cells in the battery module will send messages to the vehicle controller throughout the life cycle, so you can judge whether they are in the charging state by obtaining the messages sent by them. Specifically, you can find the charging identification in the messages and For the two fields of current, for example, when the charging status of a message is charging, the charging capacity of the battery module is in the range of [80%, 90%], the current is less than 0 and the current is greater than -51.480 (less than 0.33C), then it can be determined The first message is the message sent when the battery is in the charging state. It should be noted that the current of the battery cell during the charging process is a negative number, which is less than 0 and greater than -51.480. Then, find the first charging data and set it as firsttime, and the charging data of each subsequent frame and firsttime within one hour (detection cycle) are the data of the first charging cycle, and the second charging cycle starts the first The data is the last data of the first charging cycle, and the next data is firsttime2, and then the charging data within one hour after firsttime2 is the data of the second charging cycle, and so on, the charging data of each frame can be divided into charging cycles Data (data set to be tested). The battery module state detection method provided in the embodiment of the present application can be implemented based on javaspark. The method shown in FIG. 3 is an exemplary implementation of the method shown in FIG. No longer.
本申请实施例提供的电池模组状态检测方法，通过获取多个待检测数据集；其中，待检测数据集包括待检测的电池模组在预设检测周期内的充电数据，充电数据包括电池模组中各电芯在每个时刻的电压值；根据各待检测数据集，确定电池模组在各检测周期内的电芯间最大压差值；根据相邻检测周期的电芯间最大压差值变化情况，确定电池模组的状态检测结果。即通过根据相邻检测周期的电芯间最大压差值变化情况所反映的电芯在充电状态下的电压变化情况，确定电池模组的状态检测结果，即保证了状态检测的客观性，也考虑了电芯间最大压差值波动情况对状态检测结果的影响，提高了状态检测结果的可靠性。并且，通过计算相邻检测周期的压差变化率，并根据得到的压差变化率对电池模组进行进一步的状态检测，避免了误报警情况的发生，进一步提高了状态检测结果的可靠性。The battery module state detection method provided in the embodiment of the present application obtains multiple data sets to be detected; wherein, the data sets to be detected include charging data of the battery module to be detected within a preset detection period, and the charging data includes battery module The voltage value of each cell in the group at each moment; according to each data set to be tested, determine the maximum voltage difference between the cells of the battery module in each detection cycle; according to the maximum voltage difference between cells in adjacent detection cycles Value changes to determine the status detection results of the battery module. That is, the state detection result of the battery module is determined by determining the state detection result of the battery module according to the voltage change of the battery cell in the charging state reflected by the change of the maximum voltage difference value between the cells in adjacent detection cycles, which ensures the objectivity of the state detection and also The influence of the fluctuation of the maximum pressure difference value between the cells on the state detection result is considered, and the reliability of the state detection result is improved. Moreover, by calculating the rate of change of the differential pressure in adjacent detection periods, and performing further state detection on the battery module according to the rate of change of the obtained differential pressure, the occurrence of false alarms is avoided, and the reliability of the state detection results is further improved.
本申请实施例提供了一种电池模组状态检测装置，用于执行上述实施例提供的电池模组状态检测方法。An embodiment of the present application provides a device for detecting the state of a battery module, which is used to implement the method for detecting the state of a battery module provided in the foregoing embodiments.
如图4所示，为本申请实施例提供的电池模组状态检测装置的结构示意图。该电池模组状态检测装置40包括获取模块401、确定模块402和检测模块403。As shown in FIG. 4 , it is a schematic structural diagram of a battery module state detection device provided in an embodiment of the present application. The battery module state detection device 40 includes an acquisition module 401 , a determination module 402 and a detection module 403 .
其中，获取模块，获取多个待检测数据集；其中，待检测数据集包括待检测的电池模组在预设检测周期内的充电数据，充电数据包括电池模组中各电芯在每个时刻的电压值；确定模块，用于根据各待检测数据集，确定电池模组在各检测周期内的电芯间最大压差值；检测模块，用于根据相邻检测周期的电芯间最大压差值变化情况，确定电池模组的状态检测结果。Wherein, the acquiring module acquires a plurality of data sets to be detected; wherein, the data sets to be detected include the charging data of the battery module to be detected within the preset detection period, and the charging data includes the charging data of each battery cell in the battery module at each moment The voltage value; the determination module is used to determine the maximum voltage difference between the cells of the battery module in each detection cycle according to each data set to be detected; the detection module is used to determine the maximum voltage difference between the cells according to the adjacent detection cycle The change of the difference value determines the state detection result of the battery module.
具体地，在一实施例中，检测模块，具体用于：Specifically, in an embodiment, the detection module is specifically used for:
判断相邻检测周期的电芯间最大压差值的变化值是否达到预设变化阈值；Judging whether the change value of the maximum pressure difference between cells in adjacent detection cycles reaches the preset change threshold;
若是，则获取相邻检测周期的电芯间最大压差值的发生时刻，根据相邻检测周期的电芯间最大压差值的变化值和该电芯间最大压差值的发生时刻，确定电池模组的状态检测结果。If so, then obtain the occurrence time of the maximum pressure difference value between the cells of the adjacent detection cycle, and determine The status detection result of the battery module.
具体地，在一实施例中，检测模块，具体用于：Specifically, in an embodiment, the detection module is specifically used for:
根据相邻检测周期的电芯间最大压差值的发生时刻，确定压差变化时长；Determine the duration of the pressure difference change according to the occurrence time of the maximum pressure difference value between the cells in the adjacent detection cycle;
根据相邻检测周期的电芯间最大压差值的变化值和压差变化时长之间的比值，确定电池模组的压差变化率；According to the ratio between the change value of the maximum pressure difference value between the cells in adjacent detection cycles and the time length of the pressure difference change, determine the change rate of the pressure difference of the battery module;
判断压差变化率是否大于预设的变化率阈值；judging whether the differential pressure change rate is greater than a preset change rate threshold;
若是，则确定电池模组的状态检测结果为异常。If yes, it is determined that the state detection result of the battery module is abnormal.
具体地，在一实施例中，检测模块，还用于：Specifically, in one embodiment, the detection module is also used for:
当相邻检测周期的电芯间最大压差值的变化值未达到预设变化阈值时，或当压差变化率不大于预设的变化率阈值时，确定电池模组的状态检测结果为正常。When the change value of the maximum pressure difference value between the cells in adjacent detection cycles does not reach the preset change threshold, or when the change rate of the pressure difference is not greater than the preset change rate threshold, it is determined that the state detection result of the battery module is normal .
具体地，在一实施例中，当确定电池模组的状态检测结果为异常时，检测模块，还用于：Specifically, in one embodiment, when it is determined that the state detection result of the battery module is abnormal, the detection module is also used to:
生成电池模组的报警信息，报警信息包括异常发生时间。Generate the alarm information of the battery module, and the alarm information includes the time when the abnormality occurred.
具体地，在一实施例中，获取模块，具体用于：Specifically, in an embodiment, the acquisition module is specifically used to:
获取待检测的电池模组在任一充电周期内各电芯的充电数据；Obtain the charging data of each battery cell in any charging cycle of the battery module to be tested;
按照预设检测周期，对充电数据进行集合划分，以将充电数据划分为多个待检测数据集。According to the preset detection period, the charging data is grouped and divided, so as to divide the charging data into a plurality of data sets to be detected.
具体地，在一实施例中，获取模块，具体用于：Specifically, in an embodiment, the acquisition module is specifically used to:
获取电池模组的在该充电周期内各时刻的充电量；Obtain the charging amount of the battery module at each moment in the charging cycle;
根据电池模组的在该充电周期内各时刻的充电量，确定电池模组处于稳定状态的时间段；According to the charging capacity of the battery module at each moment in the charging cycle, determine the time period during which the battery module is in a stable state;
将该时间段内的充电数据作为目标充电数据；The charging data within the time period is used as the target charging data;
按照预设的检测周期，对目标充电数据进行集合划分。According to the preset detection period, the target charging data is grouped and divided.
关于本实施例中的电池模组状态检测装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。Regarding the device for detecting the state of a battery module in this embodiment, the specific manner in which each module executes operations has been described in detail in the embodiment of the method, and will not be described in detail here.
本申请实施例提供的电池模组状态检测装置，用于执行上述实施例提供的电池模组状态检测方法，其实现方式与原理相同，不再赘述。The battery module state detection device provided in the embodiment of the present application is used to implement the battery module state detection method provided in the above embodiment, and its implementation method is the same as the principle, and will not be described again.
本申请实施例提供了一种电子设备，用于执行上述实施例提供的电池模组状态检测方法。An embodiment of the present application provides an electronic device configured to execute the battery module state detection method provided in the foregoing embodiments.
如图5所示，为本申请实施例提供的电子设备的结构示意图。该电子设备50包括：至少一个处理器51和存储器52；As shown in FIG. 5 , it is a schematic structural diagram of an electronic device provided in the embodiment of the present application. The electronic device 50 includes: at least one processor 51 and a memory 52;
存储器存储计算机执行指令；至少一个处理器执行存储器存储的计算机执行指令，使得至少一个处理器执行如上实施例提供的电池模组状态检测方法。The memory stores computer-executable instructions; at least one processor executes the computer-executable instructions stored in the memory, so that at least one processor executes the battery module state detection method provided in the above embodiment.
本申请实施例提供的一种电子设备，用于执行上述实施例提供的电池模组状态检测方法，其实现方式与原理相同，不再赘述。An electronic device provided in an embodiment of the present application is used to execute the method for detecting the state of a battery module provided in the above embodiment, and the implementation method is the same as the principle, so details are not repeated here.
本申请实施例提供了一种计算机可读存储介质，计算机可读存储介质中存储有计算机执行指令，当处理器执行计算机执行指令时，实现如上任一实施例提供的电池模组状态检测方法。An embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the processor executes the computer-executable instructions, the battery module state detection method provided in any one of the above embodiments is implemented.
本申请实施例的包含计算机可执行指令的存储介质，可用于存储前述实施例中提供的电池模组状态检测方法的计算机执行指令，其实现方式与原理相同，不再赘述。The storage medium containing computer-executable instructions in the embodiment of the present application can be used to store the computer-executable instructions of the battery module state detection method provided in the foregoing embodiments.
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) or a processor (processor) execute the methods described in various embodiments of the present application. partial steps. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .
本领域技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的装置的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。Those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above-mentioned functional modules is used as an example for illustration. The internal structure of the system is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. scope.
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