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Battery management system and method of driving the same

A battery management system and battery technology, applied to electric vehicles, secondary batteries, battery circuit devices, etc., can solve problems such as inaccurate estimation

Inactive Publication Date: 2014-12-03
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the above method, the SOC may not be estimated correctly due to an error in current summation at the end of discharge or a change in current or temperature during discharge

Method used

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  • Battery management system and method of driving the same
  • Battery management system and method of driving the same
  • Battery management system and method of driving the same

Examples

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Embodiment Construction

[0030] Hereinafter, specific exemplary embodiments according to the described technology will be described with reference to the accompanying drawings. Here, when a first element is described as being coupled to a second element, the first element may not only be directly coupled to the second element but may also be indirectly coupled to the second element via a third element. Like reference numerals refer to like elements throughout.

[0031] Hereinafter, exemplary embodiments of the described technology will be described with reference to the accompanying drawings.

[0032] figure 1 is a diagram illustrating a battery according to one exemplary embodiment of the described technology.

[0033] refer to figure 1 , the battery 10 as a large-capacity battery module may include: a plurality of secondary batteries 11 arranged continuously at substantially uniform intervals; a casing 13 in which the secondary batteries are arranged and a cooling medium in the casing 13 Circula...

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Abstract

A battery management system (BMS) and a method of driving the same are disclosed. In one aspect, the BMS includes a first state of charge (SOC) estimator configured to estimate an SOC of a battery using at least one of i) a charge and discharge current of the battery, ii) a voltage of the battery and iii) a temperature of the battery. The BMS also includes a residual capacity estimator, when the estimated SOC is substantially equal to or less than the reference SOC, configured to estimate a current residual capacity using at least one of i) a reference residual capacity calculated from a reference SOC, ii) the measured battery voltage, iii) a first reference voltage, and iv) a second reference voltage. The BMS further includes a second SOC estimator configured to estimate a current SOC based at least in part on the current residual capacity.

Description

[0001] This application claims priority and benefit from Korean Patent Application No. 10-2013-0059841 filed with the Korean Intellectual Property Office on May 27, 2013, the entire contents of which are hereby incorporated by reference. technical field [0002] The disclosed technology generally relates to a battery management system and a method of driving the battery management system, and more particularly, to a battery management system configured to accurately estimate the remaining capacity of a battery and a method of driving the battery method of managing the system. Background technique [0003] There have been many recent developments in secondary or rechargeable batteries having high energy density and using non-aqueous electrolyte solutions. A plurality of high-output secondary batteries may be connected in series to form a large-capacity secondary battery (hereinafter referred to as a battery). Large-capacity secondary batteries can be used for high-power devi...

Claims

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Application Information

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IPC IPC(8): H02J7/00G01R31/36
CPCG01R31/3651G01R31/3606H02J7/00G01R31/382G01R31/367Y02E60/10H01M10/48G01R31/3842H02J7/0048H01M10/486
Inventor 李守真赵永信沈煐祐
Owner SAMSUNG SDI CO LTD