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Method and device for determining consistency of battery strings

A technology for determining methods and devices, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., and can solve problems such as the inability to evaluate the consistency of battery strings

Active Publication Date: 2017-06-13
NORTH CHINA ELECTRICAL POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The embodiment of the present invention provides a method for determining the consistency of battery strings to solve the technical problem in the prior art that the consistency of battery strings cannot be evaluated

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  • Method and device for determining consistency of battery strings
  • Method and device for determining consistency of battery strings
  • Method and device for determining consistency of battery strings

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0023] In an embodiment of the present invention, a method for determining the consistency of battery strings is provided, such as figure 2 As shown, the method includes:

[0024] Step 201: Obtain the voltage data and current data of each battery string of the energy storage unit at each running moment;

[0025] Step 202: Calculate the equivalent voltage of each battery string at each operating moment according to the voltage data and current data of each battery string;

[0026] Step 203: Calculate the equivalent voltage deviation value of each battery string at each operating time accordin...

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Abstract

The embodiment of the invention provides a method and device for determining the consistency of battery strings. The method includes the following steps that voltage data and current data of each battery string in an energy storage unit at each operation time are obtained; according to the voltage data and current data of each battery string, the equivalent voltage of each battery string at each operation time is calculated; according to the equivalent voltage of each battery string at each operation time, the equivalent voltage deviation value of each battery string at each operation time is calculated, wherein the equivalent voltage deviation value represents the degree of consistency of one battery string in the energy storage unit and other battery strings in the energy storage unit. The method for determining the consistency of the battery strings is based on the VCR characteristics of a direct-current power supply, a basis is provided for evaluation on battery string operation states, and the method and the device have guiding significance in reasonably arranging battery maintenance and improving the use efficiency of batteries.

Description

technical field [0001] The invention relates to the technical field of battery energy storage units, in particular to a method and device for determining consistency of battery strings. Background technique [0002] The lithium battery energy storage unit is composed of battery strings connected in parallel. When the battery strings are connected in parallel on the DC side, such as figure 1 As shown, due to the circulation current between the battery strings, the consistency between the battery strings is affected, and the consistency between the battery strings has an important impact on the operation of the energy storage unit: the consistency of the battery strings is good, the If the circulation between the strings is small, the energy storage unit will work well, otherwise, the running effect will be poor. Therefore, the consistency of battery strings is an important basis for evaluating the operating status of energy storage units. However, the consistency of battery...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 陈豪白恺柳玉董建明刁嘉马步云蔡建明史学伟李娜董文琦
Owner NORTH CHINA ELECTRICAL POWER RES INST
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