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Lithium battery pack management system

A lithium battery pack and management system technology, applied in battery circuit devices, safety/protection battery circuits, arrangement of multiple synchronous batteries, etc. Longevity, reduction of development costs and management and maintenance costs, effect of increasing lifespan

Inactive Publication Date: 2015-04-15
STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG POWER +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of the existing lithium battery pack management system, such as high cost, difficult implementation, and imperfect balance management, the present invention provides a lithium battery pack management system capable of real-time monitoring of the battery pack, low cost and with balanced management functions system

Method used

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the drawings.

[0038] Such as figure 1 Shown is the topological structure diagram of the lithium battery pack management system of the present invention. The present invention provides a lithium battery pack management scheme. The scheme adopts a master-slave distribution structure to jointly manage N groups of lithium batteries. Each group of lithium batteries is composed of 4-6 single cells, which can effectively reduce the volume and system cost. . In order to facilitate management, try to ensure that each slave control board manages the same number of lithium batteries. For example, to provide 220V voltage, about 68 lithium batteries are needed, which can be divided into 12 groups, of which 10 groups are 6 batteries each. The other two groups consist of 4 sessions each. Each group of lithium batteries is directly managed by a slave control board (ie, the data acquisition board in the...

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Abstract

The invention relates to a lithium battery pack management system. The lithium battery pack management system comprises N sets of lithium batteries, N slave control panel cards, a main control board and a host computer. The system can monitor the voltage, the charging and discharging currents, the operating temperature and the environmental temperature of a single lithium battery in real time, equalization control can be performed on the single battery with a large state difference according to the detected voltage of the lithium battery and an equalization algorithm brought forward, and the consistency of the battery is improved. According to collected parameters, the main control board can give an SOC estimated value, provides a charging and discharging management strategy, and extends the service lifetime of the battery. The host computer displays the collected state information, control information, abnormality information and alarm information of a lithium battery pack and provides friendly man-computer interaction. Meanwhile, a similar modularization design scheme is brought forward for hardware development of the system, and the maintenance cost can be effectively reduced.

Description

Technical field [0001] The invention relates to the field of management systems for DC backup power supplies in substations, in particular to a lithium battery pack management system. Background technique [0002] At present, in our country's substations, the DC power supply system is an independent power supply system that has nothing to do with the operation of the power system, ensuring that the substation can still work reliably and normally even if the AC power fails completely. The battery pack is an important part of the DC power system. Lead-acid battery packs are currently commonly used in the market, but they have some inherent shortcomings, such as short life span, difficulty in meeting safety requirements, and poor discharge performance. The lithium battery pack has excellent properties such as small size, long life, high energy density, no memory effect, high voltage and low self-discharge rate. [0003] In addition, in order to maximize the superior performance of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0014H02J7/0021H02J7/0026H02J7/0036H02J2007/0067
Inventor 王英男杨志家王忠锋王笑天韩峰利李朝顺金鹏李力刚黄剑龙
Owner STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG POWER
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