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Lithium battery pack SOC measuring device and method

A technology of lithium battery pack and measuring device, which is applied in the direction of measuring device, measuring electricity, measuring electric variable, etc.

Active Publication Date: 2017-03-29
SOUTHWEAT UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the existing SOC measurement methods, provide a lithium battery pack SOC measurement device and method, and solve the problem of accurate SOC measurement of lithium battery power pack applications

Method used

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  • Lithium battery pack SOC measuring device and method
  • Lithium battery pack SOC measuring device and method
  • Lithium battery pack SOC measuring device and method

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Embodiment Construction

[0011] The SOC measurement method of the power lithium battery pack combined with the S-ECM model and RP-UKF algorithm of the present invention will be further described in detail below in conjunction with the accompanying drawings; The BMTS platform realizes its networking control through the RS485 bus mechanism, and is equipped with embedded MCGS and IPC to realize local control and remote control; add aviation headers and assign jumper identification codes to improve adaptability to various lithium battery packs; through An independent protection unit IPU is added in the main charge and discharge circuit to achieve three-level protection; this method is based on constant current CC discharge, and is integrated into the process of series charging to balance charging to improve the capacity utilization efficiency of lithium battery packs; through CC charging to CV charging mode Switch to solve the problem of full charge of each battery cell, and construct a SOC measurement mod...

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Abstract

The invention relates to a lithium battery pack SOC measuring device and method, and belongs to the field of new energy measurement and control. The method is characterized in that in allusion to a lithium battery pack SOC measurement target, an SOC value is measured accurately through building a lithium battery pack targeted battery maintenance and test system (BMTS) platform; networking control is realized through an RS485 bus mechanism, and an embedded monitor and control generated system (MCGS) and an industrial personal computer (IPC) are equipped to realize local control and remote control; an aviation head is additionally arranged and a jumper identification code is allocated so as to improve the adaptability for various types of lithium battery packs; and three-level protection is realized through additionally arranging an independent protection unit (IPU) in a main charging and discharging circuit. According to the lithium battery pack SOC measuring method, a series charging to equalization charging process is integrated on the basis of constant current (CC) discharge so as to improve the capacity utilization efficiency of the lithium battery packs; and a problem that each single battery is fully charged is solved through constant current (CC) charging to constant voltage (CV) charging mode switching, and effective measurement for the SOC value is realized.

Description

technical field [0001] The invention relates to a device and method for measuring the SOC of a lithium battery pack. The method aims at measuring the SOC of a lithium battery pack, and accurately measures the SOC value by constructing a targeted battery maintenance and test system (Battery Maintenance and Test System, BMTS) platform for the lithium battery pack. ;Realize its networking control through the RS485 bus mechanism, and is equipped with an embedded monitoring and control general system (Monitor and Control Generated System, MCGS) and industrial personal computer (Industrial Personal Computer, IPC) to realize local control and remote control; increase the aviation head and Assign jumper identification codes to improve the adaptability to a variety of lithium battery packs; add an independent protection unit IPU in the main charging and discharging circuit to achieve three-level protection; this method incorporates series charging to balance on the basis of constant cur...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 王顺利尚丽平李占锋李建超袁会芳
Owner SOUTHWEAT UNIV OF SCI & TECH
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