CN118169594A - Energy storage battery device and state of charge evaluation method thereof - Google Patents
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Abstract
Description
技术领域Technical Field
本发明属于储能装置技术领域，尤其涉及一种储能电池装置及其荷电状态评估方法。The present invention belongs to the technical field of energy storage devices, and in particular relates to an energy storage battery device and a method for evaluating the state of charge thereof.
背景技术Background technique
随着新能源的并网容量的逐渐增加和储能技术的快速发展，为了降低由于新能源的并网对电网的运行稳定性的影响，电力企业在电力系统内部设置的储能电池装置的数量也日益增加，由于储能装置的荷电容量的计算的准确与否与储能装置的调节性能的可靠性直接相关，因此如何实现对储能装置的荷电状态的准确评估成为亟待解决的技术问题。With the gradual increase in the grid-connected capacity of new energy sources and the rapid development of energy storage technology, in order to reduce the impact of the grid-connected capacity of new energy sources on the operational stability of the power grid, the number of energy storage battery devices installed by power companies within the power system is also increasing. Since the accuracy of the calculation of the charge capacity of the energy storage device is directly related to the reliability of the regulation performance of the energy storage device, how to achieve accurate assessment of the charge state of the energy storage device has become a technical problem that needs to be solved urgently.
现有技术方案中往往通过储能装置厂家自带的荷电状态的评估结果进行储能装置的荷电状态的评估，但是一般来说由于储能装置厂家自带的荷电状态的评估方式往往仅适用于出厂时的储能电池，而一旦储能电池由于放电循环次数过多时，则不可避免会导致储能电池发生老化，这也使得储能装置的荷电状态的评估结果随着使用年限的增加准确率越来越难以满足要求。In the existing technical solutions, the state of charge of the energy storage device is often evaluated by the state of charge evaluation result provided by the energy storage device manufacturer. However, generally speaking, the state of charge evaluation method provided by the energy storage device manufacturer is often only applicable to the energy storage battery at the time of leaving the factory. Once the energy storage battery has too many discharge cycles, it will inevitably cause the energy storage battery to age. This also makes it increasingly difficult for the accuracy of the state of charge evaluation result of the energy storage device to meet the requirements as the service life increases.
针对上述技术问题，本发明提供了一种储能电池装置及其荷电状态评估方法。In view of the above technical problems, the present invention provides an energy storage battery device and a method for evaluating the state of charge thereof.
发明内容Summary of the invention
为实现本发明目的，本发明采用如下技术方案：To achieve the purpose of the present invention, the present invention adopts the following technical solutions:
根据本发明的一个方面，提供了一种储能电池装置的荷电状态评估方法。According to one aspect of the present invention, a method for evaluating the state of charge of an energy storage battery device is provided.
一种储能电池装置的荷电状态评估方法，其特征在于，具体包括：A method for evaluating the state of charge of an energy storage battery device, characterized by comprising:
S1基于储能电池装置在不同的放电循环次数的电压衰减时刻对应的荷电状态的显示结果进行不同的放电循环次数的荷电状态的初始准确率以及偏差循环次数的确定；S1 determines the initial accuracy of the state of charge at different discharge cycles and the number of deviation cycles based on the display results of the state of charge corresponding to the voltage decay time of the energy storage battery device at different discharge cycles;
S2获取所述储能电池装置的偏差循环次数，并结合所述储能电池装置在不同的放电循环次数的荷电状态的初始准确率进行所述储能电池装置的准确率评估量，当所述储能电池装置的准确率评估量不满足要求时，进入下一步骤；S2 obtains the number of deviation cycles of the energy storage battery device, and performs an accuracy evaluation of the energy storage battery device in combination with the initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers. When the accuracy evaluation of the energy storage battery device does not meet the requirements, proceed to the next step;
S3通过所述储能电池装置在不同的放电循环次数中的电流曲线进行不同的放电循环次数之间的电流曲线的相似度的确定，并根据不同的放电循环次数的电流曲线的相似度确定所述储能电池装置的电池状态不存在故障时，进入下一步骤；S3 determines the similarity of the current curves of the energy storage battery device at different discharge cycle times through the current curves of the energy storage battery device at different discharge cycle times, and when it is determined that there is no fault in the battery state of the energy storage battery device according to the similarity of the current curves of the different discharge cycle times, proceeds to the next step;
S4基于不同的放电循环次数的电流曲线与荷电状态的显示结果进行不同的放电循环次数的误差情况的确定，并根据不同的放电循环次数的误差情况以及荷电状态的显示结果确定所述储能电池装置的荷电状态。S4 determines the error conditions of different discharge cycle numbers based on the current curves of different discharge cycle numbers and the display results of the state of charge, and determines the state of charge of the energy storage battery device according to the error conditions of different discharge cycle numbers and the display results of the state of charge.
本发明的有益效果在于：The beneficial effects of the present invention are:
1、通过储能电池装置的偏差循环次数以及储能电池装置在不同的放电循环次数的荷电状态的初始准确率进行储能电池装置的准确率评估量的确定，实现了从储能电池装置的放电循环次数中的偏差情况以及荷电状态的初始准确率进行储能电池装置的准确率评估量的评估，进而实现了对荷电状态存在偏差的储能电池装置的筛选，也为差异化的进行荷电状态的修正奠定了基础。1. The accuracy evaluation amount of the energy storage battery device is determined by the deviation cycle number of the energy storage battery device and the initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers. The accuracy evaluation amount of the energy storage battery device is evaluated from the deviation in the discharge cycle number of the energy storage battery device and the initial accuracy of the state of charge, thereby realizing the screening of energy storage battery devices with deviations in the state of charge, and also laying the foundation for differentiated correction of the state of charge.
2、根据不同的放电循环次数的误差情况以及荷电状态的显示结果确定储能电池装置的荷电状态，避免了原有的采用荷电状态的显示结果导致的储能电池装置的荷电状态的评估结果不够准确的技术问题的出现，充分考虑到不同的放电循环次数的偏差情况，实现了从偏差情况的角度对储能电池装置的荷电状态的准确修正。2. The state of charge of the energy storage battery device is determined according to the error conditions of different discharge cycle numbers and the display results of the state of charge, thereby avoiding the technical problem that the evaluation results of the state of charge of the energy storage battery device are not accurate enough due to the original display results of the state of charge. The deviation conditions of different discharge cycle numbers are fully considered, and the accurate correction of the state of charge of the energy storage battery device from the perspective of the deviation conditions is achieved.
进一步的技术方案在于，所述电压衰减时刻根据所述电池储能装置的电压与预设电压的匹配结果进行确定。A further technical solution is that the voltage decay time is determined according to a matching result between the voltage of the battery energy storage device and a preset voltage.
进一步的技术方案在于，所述放电循环次数的荷电状态的初始准确率的确定的方法为：A further technical solution is that the method for determining the initial accuracy of the state of charge of the discharge cycle number is:
根据所述电压衰减时刻的电池储能装置的电压进行所述放电循环次数的对应的荷电状态的确定，并基于所述放电循环次数的对应的荷电状态与所述荷电状态的显示结果的偏差量确定所述放电循环次数的荷电状态的初始准确率。The state of charge corresponding to the number of discharge cycles is determined according to the voltage of the battery energy storage device at the voltage decay moment, and the initial accuracy of the state of charge of the number of discharge cycles is determined based on the deviation between the state of charge corresponding to the number of discharge cycles and the display result of the state of charge.
进一步的技术方案在于，当所述放电循环次数的荷电状态的初始准确率小于预设准确率时，则确定所述放电循环次数为偏差循环次数。A further technical solution is that when the initial accuracy of the state of charge of the discharge cycle number is less than a preset accuracy, the discharge cycle number is determined to be a deviation cycle number.
进一步的技术方案在于，所述储能电池装置的准确率评估量的取值范围在0到1之间，其中当所述储能电池装置的准确率评估量小于预设准确率限定值时，则确定所述储能电池装置的准确率评估量不满足要求。A further technical solution is that the accuracy evaluation value of the energy storage battery device ranges from 0 to 1, wherein when the accuracy evaluation value of the energy storage battery device is less than a preset accuracy limit value, it is determined that the accuracy evaluation value of the energy storage battery device does not meet the requirements.
进一步的技术方案在于，当所述储能电池装置的准确率评估量满足要求时，则确定无需进行储能电池装置的荷电状态的修正，将所述储能电池装置的荷电状态的显示结果作为所述储能电池的荷电状态的显示结果。A further technical solution is that when the accuracy evaluation amount of the energy storage battery device meets the requirements, it is determined that there is no need to correct the charge state of the energy storage battery device, and the display result of the charge state of the energy storage battery device is used as the display result of the charge state of the energy storage battery.
进一步的技术方案在于，当所述储能电池装置的电池状态存在故障时，则确定无需进行储能电池装置的荷电状态的修正，并输出储能电池装置的维修提醒。A further technical solution is that, when there is a fault in the battery state of the energy storage battery device, it is determined that there is no need to correct the charge state of the energy storage battery device, and a maintenance reminder for the energy storage battery device is output.
另一方面，本发明提供了一种储能电池装置，采用上述的一种储能电池装置的荷电状态评估方法，其特征在于，具体包括：On the other hand, the present invention provides an energy storage battery device, which adopts the above-mentioned method for assessing the state of charge of the energy storage battery device, and is characterized in that it specifically includes:
偏差循环次数筛选模块，准确率评估模块，故障状态评估模块，荷电状态评估模块；Deviation cycle number screening module, accuracy evaluation module, fault status evaluation module, charge status evaluation module;
其中所述偏差循环次数筛选模块负责基于储能电池装置在不同的放电循环次数的电压衰减时刻对应的荷电状态的显示结果进行不同的放电循环次数的荷电状态的初始准确率以及偏差循环次数的确定；The deviation cycle number screening module is responsible for determining the initial accuracy of the state of charge at different discharge cycle numbers and the deviation cycle number based on the display results of the state of charge corresponding to the voltage decay time of the energy storage battery device at different discharge cycle numbers;
所述准确率评估模块负责获取所述储能电池装置的偏差循环次数，并结合所述储能电池装置在不同的放电循环次数的荷电状态的初始准确率进行所述储能电池装置的准确率评估量；The accuracy evaluation module is responsible for obtaining the number of deviation cycles of the energy storage battery device, and performing an accuracy evaluation of the energy storage battery device in combination with the initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers;
所述故障状态评估模块负责通过所述储能电池装置在不同的放电循环次数中的电流曲线进行不同的放电循环次数之间的电流曲线的相似度的确定，并根据不同的放电循环次数的电流曲线的相似度确定所述储能电池装置的电池状态是否存在故障；The fault state evaluation module is responsible for determining the similarity of current curves between different discharge cycle times through the current curves of the energy storage battery device in different discharge cycle times, and determining whether the battery state of the energy storage battery device has a fault according to the similarity of the current curves of different discharge cycle times;
所述荷电状态评估模块负责基于不同的放电循环次数的电流曲线与荷电状态的显示结果进行不同的放电循环次数的误差情况的确定，并根据不同的放电循环次数的误差情况以及荷电状态的显示结果确定所述储能电池装置的荷电状态。The state of charge evaluation module is responsible for determining the error conditions of different discharge cycle numbers based on the current curves of different discharge cycle numbers and the display results of the state of charge, and determining the state of charge of the energy storage battery device according to the error conditions of different discharge cycle numbers and the display results of the state of charge.
其他特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点在说明书以及附图中所特别指出的结构来实现和获得。Other features and advantages will be described in the following description, and partly become apparent from the description, or understood by practicing the invention. The purpose and other advantages of the invention are realized and obtained by the structures particularly pointed out in the description and the drawings.
为使本发明的上述目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附附图，作详细说明如下。In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
通过参照附图详细描述其示例实施方式，本发明的上述和其它特征及优点将变得更加明显。The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
图1是一种储能电池装置的荷电状态评估方法的流程图；FIG1 is a flow chart of a method for evaluating the state of charge of an energy storage battery device;
图2储能电池装置的准确率评估量的确定的方法的流程图；FIG2 is a flow chart of a method for determining an accuracy evaluation value of an energy storage battery device;
图3是放电循环次数之间的电流曲线的相似度的确定的方法的流程图。FIG. 3 is a flow chart of a method for determining the similarity of current curves between discharge cycle times.
具体实施方式Detailed ways
为了使本技术领域的人员更好地理解本说明书中的技术方案，下面将结合本说明书实施例中的附图，对本说明书实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本说明书一部分实施例，而不是全部的实施例。基于本说明书实施例，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，都应当属于本说明书保护的范围。In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.
为便于理解，下面将通过实施例1和实施例2进行方案的说明。For ease of understanding, the scheme will be described below through Example 1 and Example 2.
实施例Example
为解决上述问题，根据本发明的一个方面，如图1所示，提供了根据本发明的一个方面，提供了一种储能电池装置的荷电状态评估方法，其特征在于，具体包括：To solve the above problems, according to one aspect of the present invention, as shown in FIG1 , a method for assessing the state of charge of an energy storage battery device is provided, which is characterized in that it specifically includes:
S1基于储能电池装置在不同的放电循环次数的电压衰减时刻对应的荷电状态的显示结果进行不同的放电循环次数的荷电状态的初始准确率以及偏差循环次数的确定；S1 determines the initial accuracy of the state of charge at different discharge cycles and the number of deviation cycles based on the display results of the state of charge corresponding to the voltage decay time of the energy storage battery device at different discharge cycles;
进一步的，所述放电循环次数的荷电状态的初始准确率的确定的方法为：Furthermore, the method for determining the initial accuracy of the state of charge of the discharge cycle number is:
根据所述电压衰减时刻的电池储能装置的电压进行所述放电循环次数的对应的荷电状态的确定，并基于所述放电循环次数的对应的荷电状态与所述荷电状态的显示结果的偏差量确定所述放电循环次数的荷电状态的初始准确率。The state of charge corresponding to the number of discharge cycles is determined according to the voltage of the battery energy storage device at the voltage decay moment, and the initial accuracy of the state of charge of the number of discharge cycles is determined based on the deviation between the state of charge corresponding to the number of discharge cycles and the display result of the state of charge.
具体的，当所述放电循环次数的荷电状态的初始准确率小于预设准确率时，则确定所述放电循环次数为偏差循环次数。Specifically, when the initial accuracy of the state of charge of the discharge cycle number is less than a preset accuracy, the discharge cycle number is determined to be a deviation cycle number.
S2获取所述储能电池装置的偏差循环次数，并结合所述储能电池装置在不同的放电循环次数的荷电状态的初始准确率进行所述储能电池装置的准确率评估量，当所述储能电池装置的准确率评估量不满足要求时，进入下一步骤；S2 obtains the number of deviation cycles of the energy storage battery device, and performs an accuracy evaluation of the energy storage battery device in combination with the initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers. When the accuracy evaluation of the energy storage battery device does not meet the requirements, proceed to the next step;
具体的，如图2所示，所述储能电池装置的准确率评估量的确定的方法为：Specifically, as shown in FIG2 , the method for determining the accuracy evaluation value of the energy storage battery device is:
基于所述储能电池装置的偏差循环次数以及不同的偏差循环次数的荷电状态的初始准确率进行所述储能电池装置的荷电状态偏差量的确定；Determining the state of charge deviation of the energy storage battery device based on the deviation cycle number of the energy storage battery device and the initial accuracy of the state of charge at different deviation cycle numbers;
获取所述储能电池装置在不同的放电循环次数的荷电状态的初始准确率，并结合所述初始准确率满足要求的放电循环次数以及所述储能电池装置的荷电状态偏差量确定所述储能电池装置的准确率评估量。The initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers is obtained, and the accuracy evaluation amount of the energy storage battery device is determined in combination with the discharge cycle number at which the initial accuracy meets the requirement and the state of charge deviation of the energy storage battery device.
进一步的，所述储能电池装置的准确率评估量的取值范围在0到1之间，其中当所述储能电池装置的准确率评估量小于预设准确率限定值时，则确定所述储能电池装置的准确率评估量不满足要求。Furthermore, the accuracy evaluation value of the energy storage battery device ranges from 0 to 1, wherein when the accuracy evaluation value of the energy storage battery device is less than a preset accuracy limit value, it is determined that the accuracy evaluation value of the energy storage battery device does not meet the requirements.
需要说明的是，当所述储能电池装置的准确率评估量满足要求时，则确定无需进行储能电池装置的荷电状态的修正，将所述储能电池装置的荷电状态的显示结果作为所述储能电池的荷电状态的显示结果。It should be noted that when the accuracy assessment amount of the energy storage battery device meets the requirements, it is determined that there is no need to correct the state of charge of the energy storage battery device, and the display result of the state of charge of the energy storage battery device is used as the display result of the state of charge of the energy storage battery.
在另外的一种实施例中，所述储能电池装置的准确率评估量的确定的方法为：In another embodiment, the method for determining the accuracy evaluation value of the energy storage battery device is:
获取所述储能电池装置的偏差循环次数，判断所述储能电池装置的偏差循环次数是否满足要求，若是，则进入下一步骤，若否，则确定所述储能电池装置的准确率评估量不满足要求；Obtaining the number of deviation cycles of the energy storage battery device, determining whether the number of deviation cycles of the energy storage battery device meets the requirement, if so, proceeding to the next step, if not, determining that the accuracy evaluation amount of the energy storage battery device does not meet the requirement;
基于所述储能电池装置的不同的偏差循环次数的荷电状态的初始准确率进行所述储能电池装置的不同的偏差循环次数的荷电状态的初始准确率的平均值的确定，判断所述荷电状态的初始准确率的平均值是否满足要求，若是，则进入下一步骤，若否，则确定所述储能电池装置的准确率评估量不满足要求；Determine the average value of the initial accuracy of the state of charge of the energy storage battery device at different deviation cycle times based on the initial accuracy of the state of charge of the energy storage battery device at different deviation cycle times, and judge whether the average value of the initial accuracy of the state of charge meets the requirement, if so, proceed to the next step, if not, determine that the accuracy evaluation amount of the energy storage battery device does not meet the requirement;
基于所述储能电池装置的偏差循环次数以及不同的偏差循环次数的荷电状态的初始准确率进行所述储能电池装置的荷电状态偏差量的确定，判断所述储能电池装置的荷电状态偏差量是否满足要求，若是，则进入下一步骤，若否，则确定所述储能电池装置的准确率评估量不满足要求；Determine the state of charge deviation of the energy storage battery device based on the deviation cycle number of the energy storage battery device and the initial accuracy of the state of charge of different deviation cycle numbers, and judge whether the state of charge deviation of the energy storage battery device meets the requirements, if so, proceed to the next step, if not, determine that the accuracy evaluation amount of the energy storage battery device does not meet the requirements;
获取所述储能电池装置在不同的放电循环次数的荷电状态的初始准确率，并结合所述初始准确率满足要求的放电循环次数以及所述储能电池装置的荷电状态偏差量确定所述储能电池装置的准确率评估量。The initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers is obtained, and the accuracy evaluation amount of the energy storage battery device is determined in combination with the discharge cycle number at which the initial accuracy meets the requirement and the state of charge deviation of the energy storage battery device.
在另外的一种实施例中，所述储能电池装置的准确率评估量的确定的方法为：In another embodiment, the method for determining the accuracy evaluation value of the energy storage battery device is:
S21获取所述储能电池装置的偏差循环次数以及放电循环次数，判断所述储能电池装置的偏差循环次数与所述放电循环次数的比值是否小于预设比值，若是，则进入下一步骤，若否，则进入步骤S23；S21 obtains the deviation cycle number and the discharge cycle number of the energy storage battery device, and determines whether the ratio of the deviation cycle number to the discharge cycle number of the energy storage battery device is less than a preset ratio. If so, proceed to the next step; if not, proceed to step S23;
S22判断所述储能电池装置是否存在初始准确率小于预设准确率阈值的偏差循环次数，若是，则进入下一步骤，若否，则确定所述储能电池装置的准确率评估量满足要求；S22 determines whether the energy storage battery device has a deviation cycle number whose initial accuracy is less than a preset accuracy threshold, if so, proceeds to the next step, if not, determines that the accuracy evaluation amount of the energy storage battery device meets the requirements;
S23获取所述初始准确率满足要求的放电循环次数的比例，判断所述初始准确率满足要求的放电循环次数的比例是否满足要求，若是，则确定所述储能电池装置的准确率评估量满足要求，若否，则进入下一步骤；S23: obtaining the ratio of the number of discharge cycles for which the initial accuracy meets the requirement, and judging whether the ratio of the number of discharge cycles for which the initial accuracy meets the requirement meets the requirement; if so, determining that the accuracy evaluation amount of the energy storage battery device meets the requirement; if not, proceeding to the next step;
S24基于所述储能电池装置的偏差循环次数以及不同的偏差循环次数的荷电状态的初始准确率进行所述储能电池装置的荷电状态偏差量的确定，判断所述储能电池装置的荷电状态偏差量是否大于预设偏差量，若是，则确定所述储能电池装置的准确率评估量不满足要求，若否，则进入下一步骤；S24 determines the state of charge deviation of the energy storage battery device based on the deviation cycle number of the energy storage battery device and the initial accuracy of the state of charge of different deviation cycle numbers, and judges whether the state of charge deviation of the energy storage battery device is greater than the preset deviation. If so, it is determined that the accuracy evaluation amount of the energy storage battery device does not meet the requirements. If not, proceed to the next step;
S25获取所述储能电池装置在不同的放电循环次数的荷电状态的初始准确率，并结合所述初始准确率满足要求的放电循环次数以及所述储能电池装置的荷电状态偏差量确定所述储能电池装置的准确率评估量。S25 obtains the initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers, and determines the accuracy evaluation amount of the energy storage battery device in combination with the discharge cycle number at which the initial accuracy meets the requirement and the state of charge deviation of the energy storage battery device.
S3通过所述储能电池装置在不同的放电循环次数中的电流曲线进行不同的放电循环次数之间的电流曲线的相似度的确定，并根据不同的放电循环次数的电流曲线的相似度确定所述储能电池装置的电池状态不存在故障时，进入下一步骤；S3 determines the similarity of the current curves of the energy storage battery device at different discharge cycle times through the current curves of the energy storage battery device at different discharge cycle times, and when it is determined that there is no fault in the battery state of the energy storage battery device according to the similarity of the current curves of the different discharge cycle times, proceeds to the next step;
进一步的，所述电压衰减时刻根据所述电池储能装置的电压与预设电压的匹配结果进行确定。Furthermore, the voltage decay time is determined according to a matching result between the voltage of the battery energy storage device and a preset voltage.
具体的，如图3所示，所述放电循环次数之间的电流曲线的相似度的确定的方法为：Specifically, as shown in FIG3 , the method for determining the similarity of the current curves between the discharge cycle times is:
将所述储能电池装置的不同的放电循环次数的电流曲线划分为多个电流曲线区间，并根据不同的电流曲线区间的偏差点的数量以及不同的偏差点的偏差量进行不同的电流曲线区间的区间相似度的确定；Dividing the current curves of the energy storage battery device at different discharge cycle times into a plurality of current curve intervals, and determining the interval similarity of the different current curve intervals according to the number of deviation points in the different current curve intervals and the deviation amounts of the different deviation points;
基于不同的电流区间的区间相似度进行所述偏差电流区间的确定，并根据所述偏差电流区间的数量以及不同的电流区间的区间相似度确定所述不同的放电循环次数之间的电流曲线的相似度。The deviation current interval is determined based on the interval similarity of different current intervals, and the similarity of the current curves between the different discharge cycle times is determined according to the number of the deviation current intervals and the interval similarity of different current intervals.
需要说明的是，确定所述储能电池装置的电池状态不存在故障，具体包括：It should be noted that determining that there is no fault in the battery state of the energy storage battery device specifically includes:
根据不同的放电循环次数的电流曲线的相似度进行所述储能电池装置的基准电流曲线的确定，并根据不同的放电循环次数的电流曲线与所述基准电流曲线的相似度进行不同的放电循环次数中的偏差电流曲线和相似电流曲线的确定；Determine the reference current curve of the energy storage battery device according to the similarity of the current curves of different discharge cycle times, and determine the deviation current curve and the similar current curve in different discharge cycle times according to the similarity between the current curves of different discharge cycle times and the reference current curve;
基于所述偏差电流曲线的数量、不同的偏差电流曲线与所述基准电流曲线的相似度以及不同的偏差电流曲线对应的放电循环次数的时间进行所述储能电池装置的电流曲线偏差量的确定；Determining the current curve deviation of the energy storage battery device based on the number of the deviation current curves, the similarity between different deviation current curves and the reference current curve, and the time of the number of discharge cycles corresponding to different deviation current curves;
根据所述相似电流曲线的数量以及不同的相似电流曲线与所述基准电流曲线的相似度以及不同的偏差电流曲线对应的放电循环次数的时间进行所述储能电池装置的电流曲线相似度的确定；Determining the similarity of the current curves of the energy storage battery device according to the number of the similar current curves, the similarity between the different similar current curves and the reference current curve, and the time of the number of discharge cycles corresponding to the different deviation current curves;
通过所述储能电池装置的电流曲线偏差量以及电流曲线相似度确定所述储能电池装置的电池状态评估量的确定，并根据所述电池状态评估量确定所述储能电池装置的电池状态是否存在故障。The battery state evaluation value of the energy storage battery device is determined by the current curve deviation and the current curve similarity of the energy storage battery device, and whether the battery state of the energy storage battery device is faulty is determined according to the battery state evaluation value.
进一步的，当所述储能电池装置的电池状态存在故障时，则确定无需进行储能电池装置的荷电状态的修正，并输出储能电池装置的维修提醒。Furthermore, when there is a fault in the battery state of the energy storage battery device, it is determined that there is no need to correct the state of charge of the energy storage battery device, and a maintenance reminder for the energy storage battery device is output.
在另外的一种实施例中，确定所述储能电池装置的电池状态不存在故障，具体包括：In another embodiment, determining that there is no fault in the battery state of the energy storage battery device specifically includes:
根据不同的放电循环次数的电流曲线的相似度进行所述储能电池装置的基准电流曲线的确定，并根据不同的放电循环次数的电流曲线与所述基准电流曲线的相似度进行不同的放电循环次数中的偏差电流曲线和相似电流曲线的确定，判断所述偏差电流曲线的数量是否满足要求，若是，则进入下一步骤，若否，则确定所述储能电池装置的电池状态存在故障；Determine the reference current curve of the energy storage battery device according to the similarity of the current curves of different discharge cycle times, and determine the deviation current curves and similar current curves in different discharge cycle times according to the similarity of the current curves of different discharge cycle times and the reference current curve, and judge whether the number of the deviation current curves meets the requirement, if yes, proceed to the next step, if not, determine that the battery state of the energy storage battery device is faulty;
根据不同的偏差曲线对应的放电循环次数的时间进行最近的预设时间周期内的偏差曲线的数量占比的确定，判断在最近的预设时间周期内的偏差曲线的数量占比是否满足要求，若是，则进入下一步骤，若否，则确定所述储能电池装置的电池状态存在故障；Determine the ratio of the number of deviation curves in the most recent preset time period according to the number of discharge cycles corresponding to different deviation curves, and judge whether the ratio of the number of deviation curves in the most recent preset time period meets the requirement, if so, proceed to the next step, if not, determine that the battery state of the energy storage battery device is faulty;
基于所述偏差电流曲线的数量、不同的偏差电流曲线与所述基准电流曲线的相似度以及不同的偏差电流曲线对应的放电循环次数的时间进行所述储能电池装置的电流曲线偏差量的确定，判断所述储能电池装置的电流曲线偏差量是否满足要求，若是，则进入下一步骤，若否，则确定所述储能电池装置的电池状态存在故障；Determine the current curve deviation of the energy storage battery device based on the number of the deviation current curves, the similarity between different deviation current curves and the reference current curve, and the time of the number of discharge cycles corresponding to different deviation current curves, and judge whether the current curve deviation of the energy storage battery device meets the requirements, if yes, proceed to the next step, if not, determine that the battery state of the energy storage battery device is faulty;
根据所述相似电流曲线的数量以及不同的相似电流曲线与所述基准电流曲线的相似度以及不同的偏差电流曲线对应的放电循环次数的时间进行所述储能电池装置的电流曲线相似度的确定；Determining the similarity of the current curves of the energy storage battery device according to the number of the similar current curves, the similarity between the different similar current curves and the reference current curve, and the time of the number of discharge cycles corresponding to the different deviation current curves;
通过所述储能电池装置的电流曲线偏差量以及电流曲线相似度确定所述储能电池装置的电池状态评估量的确定，并根据所述电池状态评估量确定所述储能电池装置的电池状态是否存在故障。The battery state evaluation value of the energy storage battery device is determined by the current curve deviation and the current curve similarity of the energy storage battery device, and whether the battery state of the energy storage battery device is faulty is determined according to the battery state evaluation value.
在另外的一种实施例中，确定所述储能电池装置的电池状态不存在故障，具体包括：In another embodiment, determining that there is no fault in the battery state of the energy storage battery device specifically includes:
根据不同的放电循环次数的电流曲线的相似度进行所述储能电池装置的基准电流曲线的确定，并根据不同的放电循环次数的电流曲线与所述基准电流曲线的相似度进行不同的放电循环次数中的偏差电流曲线和相似电流曲线的确定；Determine the reference current curve of the energy storage battery device according to the similarity of the current curves of different discharge cycle times, and determine the deviation current curve and the similar current curve in different discharge cycle times according to the similarity between the current curves of different discharge cycle times and the reference current curve;
根据不同的偏差曲线对应的放电循环次数的时间进行最近的预设时间周期内的偏差曲线的数量占比的确定，并结合不同的偏差曲线与所述基准电流曲线的相似度以及不同的偏差电流曲线对应的放电循环次数的时间进行预设时间周期内的电流曲线偏差量的确定，判断所述储能电池装置在预设时间周期内的电流曲线偏差量是否满足要求，若是，则进入下一步骤，若否，则确定所述储能电池装置的电池状态存在故障；Determine the proportion of the number of deviation curves in the most recent preset time period according to the times of the number of discharge cycles corresponding to different deviation curves, and determine the current curve deviation amount in the preset time period in combination with the similarity between different deviation curves and the reference current curve and the times of the number of discharge cycles corresponding to different deviation current curves, and judge whether the current curve deviation amount of the energy storage battery device in the preset time period meets the requirements, if yes, proceed to the next step, if not, determine that the battery state of the energy storage battery device is faulty;
基于所述偏差电流曲线的数量、不同的偏差电流曲线与所述基准电流曲线的相似度以及不同的偏差电流曲线对应的放电循环次数的时间进行所述储能电池装置的电流曲线偏差量的确定，判断所述储能电池装置的电流曲线偏差量是否满足要求，若是，则进入下一步骤，若否，则确定所述储能电池装置的电池状态存在故障；Determine the current curve deviation of the energy storage battery device based on the number of the deviation current curves, the similarity between different deviation current curves and the reference current curve, and the time of the number of discharge cycles corresponding to different deviation current curves, and judge whether the current curve deviation of the energy storage battery device meets the requirements, if yes, proceed to the next step, if not, determine that the battery state of the energy storage battery device is faulty;
根据所述相似电流曲线的数量以及不同的相似电流曲线与所述基准电流曲线的相似度以及不同的偏差电流曲线对应的放电循环次数的时间进行所述储能电池装置的电流曲线相似度的确定；Determining the similarity of the current curves of the energy storage battery device according to the number of the similar current curves, the similarity between the different similar current curves and the reference current curve, and the time of the number of discharge cycles corresponding to the different deviation current curves;
通过所述储能电池装置的电流曲线偏差量以及电流曲线相似度确定所述储能电池装置的电池状态评估量的确定，并根据所述电池状态评估量确定所述储能电池装置的电池状态是否存在故障。The battery state evaluation value of the energy storage battery device is determined by the current curve deviation and the current curve similarity of the energy storage battery device, and whether the battery state of the energy storage battery device is faulty is determined according to the battery state evaluation value.
具体的，所述基准电流曲线的确定的方法为：Specifically, the method for determining the reference current curve is:
根据不同的电流曲线与其它的电流曲线的相似度进行所述电流曲线与其它的电流曲线的相似度的和的确定，并基于所述与其它的电流曲线的相似度的和的最大值对应的电流曲线作为基准电流曲线。The sum of similarities between the current curve and other current curves is determined according to the similarities between different current curves and other current curves, and a current curve corresponding to a maximum value of the sum of similarities with other current curves is used as a reference current curve.
S4基于不同的放电循环次数的电流曲线与荷电状态的显示结果进行不同的放电循环次数的误差情况的确定，并根据不同的放电循环次数的误差情况以及荷电状态的显示结果确定所述储能电池装置的荷电状态。S4 determines the error conditions of different discharge cycle numbers based on the current curves of different discharge cycle numbers and the display results of the state of charge, and determines the state of charge of the energy storage battery device according to the error conditions of different discharge cycle numbers and the display results of the state of charge.
具体的，所述储能电池装置的荷电状态的确定的方法为：Specifically, the method for determining the state of charge of the energy storage battery device is:
根据不同的放电循环次数的误差情况进行不同的放电循环次数的显示结果误差量的确定，基于所述显示结果误差量将不同的放电循环次数划分至误差区间；Determine the display result error amounts of different discharge cycle numbers according to the error conditions of different discharge cycle numbers, and divide the different discharge cycle numbers into error intervals based on the display result error amounts;
通过不同的误差区间的放电循环次数的显示结果误差量以及不同的误差区间的放电循环次数进行不同的误差区间的识别准确率的确定，并基于所述识别准确率进行基准误差区间的确定；Determine the recognition accuracy of different error intervals by using the displayed result error amount of the discharge cycle number of different error intervals and the discharge cycle number of different error intervals, and determine the reference error interval based on the recognition accuracy;
根据所述基准误差区间的不同的放电循环次数的显示结果偏差量的平均值进行所述荷电状态的显示结果的补偿量的确定，并结合所述储能电池装置的显示结果确定所述储能电池装置的荷电状态。The compensation amount of the display result of the state of charge is determined according to the average value of the display result deviation of different discharge cycle numbers in the reference error interval, and the state of charge of the energy storage battery device is determined in combination with the display result of the energy storage battery device.
在另外的一种实施例中，所述储能电池装置的荷电状态的确定的方法为：In another embodiment, the method for determining the state of charge of the energy storage battery device is:
S41根据不同的放电循环次数的误差情况进行不同的放电循环次数的显示结果误差量的确定，基于所述显示结果误差量将不同的放电循环次数划分至误差区间，并将放电循环次数最多的误差区间作为参考误差区间，判断所述参考误差区间的放电循环次数在所述放电循环次数中的占比是否大于预设占比，若是，则将所述参考误差区间作为基准误差区间，并进入步骤S44，若否，则进入下一步骤；S41 determines the display result error amounts of different discharge cycle numbers according to the error conditions of different discharge cycle numbers, divides the different discharge cycle numbers into error intervals based on the display result error amounts, and uses the error interval with the largest number of discharge cycles as a reference error interval, and determines whether the proportion of the discharge cycle number in the reference error interval in the discharge cycle number is greater than a preset proportion. If so, use the reference error interval as a reference error interval and proceed to step S44; if not, proceed to the next step;
S42获取所述参考误差区间与不同的误差区间的放电循环次数的偏差量，判断是否存在偏差量小于预设偏差阈值的误差区间，若是，则进入下一步骤，若否，则将所述参考误差区间作为基准误差区间，并进入步骤S44；S42: obtaining the deviation between the reference error interval and the number of discharge cycles of different error intervals, and determining whether there is an error interval whose deviation is less than a preset deviation threshold. If so, proceeding to the next step; if not, taking the reference error interval as the benchmark error interval and proceeding to step S44;
S43通过不同的误差区间的放电循环次数的显示结果误差量以及不同的误差区间的放电循环次数进行不同的误差区间的识别准确率的确定，并基于所述识别准确率进行基准误差区间的确定；S43: determining the recognition accuracy of different error intervals according to the displayed result error amount of the discharge cycle number of different error intervals and the discharge cycle number of different error intervals, and determining the reference error interval based on the recognition accuracy;
S44根据所述基准误差区间的不同的放电循环次数的显示结果偏差量的平均值进行所述荷电状态的显示结果的补偿量的确定，并结合所述储能电池装置的显示结果确定所述储能电池装置的荷电状态。S44 determines the compensation amount of the display result of the state of charge according to the average value of the display result deviation of different discharge cycle numbers in the reference error interval, and determines the state of charge of the energy storage battery device in combination with the display result of the energy storage battery device.
实施例Example
另一方面，本发明提供了一种储能电池装置，采用上述的一种储能电池装置的荷电状态评估方法，其特征在于，具体包括：On the other hand, the present invention provides an energy storage battery device, which adopts the above-mentioned method for assessing the state of charge of the energy storage battery device, and is characterized in that it specifically includes:
偏差循环次数筛选模块，准确率评估模块，故障状态评估模块，荷电状态评估模块；Deviation cycle number screening module, accuracy evaluation module, fault status evaluation module, charge status evaluation module;
其中所述偏差循环次数筛选模块负责基于储能电池装置在不同的放电循环次数的电压衰减时刻对应的荷电状态的显示结果进行不同的放电循环次数的荷电状态的初始准确率以及偏差循环次数的确定；The deviation cycle number screening module is responsible for determining the initial accuracy of the state of charge at different discharge cycle numbers and the deviation cycle number based on the display results of the state of charge corresponding to the voltage decay time of the energy storage battery device at different discharge cycle numbers;
所述准确率评估模块负责获取所述储能电池装置的偏差循环次数，并结合所述储能电池装置在不同的放电循环次数的荷电状态的初始准确率进行所述储能电池装置的准确率评估量；The accuracy evaluation module is responsible for obtaining the number of deviation cycles of the energy storage battery device, and performing an accuracy evaluation of the energy storage battery device in combination with the initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers;
所述故障状态评估模块负责通过所述储能电池装置在不同的放电循环次数中的电流曲线进行不同的放电循环次数之间的电流曲线的相似度的确定，并根据不同的放电循环次数的电流曲线的相似度确定所述储能电池装置的电池状态是否存在故障；The fault state evaluation module is responsible for determining the similarity of current curves between different discharge cycle times through the current curves of the energy storage battery device in different discharge cycle times, and determining whether the battery state of the energy storage battery device has a fault according to the similarity of the current curves of different discharge cycle times;
所述荷电状态评估模块负责基于不同的放电循环次数的电流曲线与荷电状态的显示结果进行不同的放电循环次数的误差情况的确定，并根据不同的放电循环次数的误差情况以及荷电状态的显示结果确定所述储能电池装置的荷电状态。The state of charge evaluation module is responsible for determining the error conditions of different discharge cycle numbers based on the current curves of different discharge cycle numbers and the display results of the state of charge, and determining the state of charge of the energy storage battery device according to the error conditions of different discharge cycle numbers and the display results of the state of charge.
本发明达到了以下技术效果：The present invention achieves the following technical effects:
1、通过储能电池装置的偏差循环次数以及储能电池装置在不同的放电循环次数的荷电状态的初始准确率进行储能电池装置的准确率评估量的确定，实现了从储能电池装置的放电循环次数中的偏差情况以及荷电状态的初始准确率进行储能电池装置的准确率评估量的评估，进而实现了对荷电状态存在偏差的储能电池装置的筛选，也为差异化的进行荷电状态的修正奠定了基础。1. The accuracy evaluation amount of the energy storage battery device is determined by the deviation cycle number of the energy storage battery device and the initial accuracy of the state of charge of the energy storage battery device at different discharge cycle numbers. The accuracy evaluation amount of the energy storage battery device is evaluated from the deviation in the discharge cycle number of the energy storage battery device and the initial accuracy of the state of charge, thereby realizing the screening of energy storage battery devices with deviations in the state of charge, and also laying the foundation for differentiated correction of the state of charge.
2、根据不同的放电循环次数的误差情况以及荷电状态的显示结果确定储能电池装置的荷电状态，避免了原有的采用荷电状态的显示结果导致的储能电池装置的荷电状态的评估结果不够准确的技术问题的出现，充分考虑到不同的放电循环次数的偏差情况，实现了从偏差情况的角度对储能电池装置的荷电状态的准确修正。2. The state of charge of the energy storage battery device is determined according to the error conditions of different discharge cycle numbers and the display results of the state of charge, thereby avoiding the technical problem that the evaluation results of the state of charge of the energy storage battery device are not accurate enough due to the original display results of the state of charge. The deviation conditions of different discharge cycle numbers are fully considered, and the accurate correction of the state of charge of the energy storage battery device from the perspective of the deviation conditions is achieved.
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于装置、设备、非易失性计算机存储介质实施例而言，由于其基本相似于方法实施例，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.
上述对本说明书特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作或步骤可以按照不同于实施例中的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序才能实现期望的结果。在某些实施方式中，多任务处理和并行处理也是可以的或者可能是有利的。The above is a description of a specific embodiment of the present specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
以上所述仅为本说明书的一个或多个实施例而已，并不用于限制本说明书。对于本领域技术人员来说，本说明书的一个或多个实施例可以有各种更改和变化。凡在本说明书的一个或多个实施例的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本说明书的权利要求范围之内。The above description is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of this specification.
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