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Backup lithium ion battery pack management method and management system thereof

A technology of lithium ion battery pack and management method, applied in the field of backup lithium ion battery pack management and its management system

Active Publication Date: 2012-06-13
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although, the functions realized by various lithium-ion battery management systems are nothing more than overcharge protection, over-discharge protection, over-current protection, over-temperature protection, and short-circuit protection, etc., and further include power estimation, health judgment, and monomer balance management. However, only when the realization mode of these management functions is organically combined with the actual working conditions of the battery pack, can it be possible to truly exert the best performance of the lithium-ion battery

Method used

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  • Backup lithium ion battery pack management method and management system thereof
  • Backup lithium ion battery pack management method and management system thereof
  • Backup lithium ion battery pack management method and management system thereof

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Embodiment Construction

[0087] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0088] figure 1 It schematically shows a -48V DC power supply system using a lithium-ion battery pack as a backup. The power supply system includes a battery management system 1 , a battery pack 2 , a rectifier module 3 , a load 4 , a discharge switch 10 , a charge switch 11 , and a current sensor 12 .

[0089] The battery pack 2 includes a plurality of single cells connected in series, as well as a voltage measurement signal line and a temperature measurement sensor. The discharge switch 10, the charge switch 11 and the current sensor 12 are connected in series in the current loop of the battery pack module.

[0090] The voltage measurement signal line and temperature measurement sensor in the battery pack 2 and the current sensor 12 transmit the original real-time data signal reflecting the operating state of the battery pack to the battery manageme...

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Abstract

The invention provides a backup lithium ion battery pack management method and a management system thereof. The method comprises the following steps: real-time data sampling, running state identification and electric quantity estimation, intelligent charging management and discharging management, self-discharge power consumption management, heating management, alarm and security protection. The cell management system comprises a power supply unit, a data acquisition unit, a storage unit, a micro control unit (MCU), a state indication unit, an equalization unit, a heating unit, a switch unit and a communication unit. The method and the system are aimed at seamlessly connecting a lithium ion battery to various present backup power supply systems, and according to working condition characteristics of various backup power supplies, a lithium ion battery pack always maintains sufficient energy in a long time energy storage reserve supply period and maintains an enough long reserve supply time in reserve supply output.

Description

technical field [0001] The invention relates to a lithium battery management method and a battery management system, in particular to an energy storage type lithium ion battery group management method used as a backup power supply and a battery management system using the method. [0002] Background technique [0003] As a backup energy supplier, it is known to use battery packs in various power supply fields such as UPS, especially lead-acid battery packs have been widely and deeply used in various industries, and lithium-ion batteries are because of their large input and output power, Wide operating temperature range, no memory effect, maintenance-free, long life, and true environmental protection have become the leading role in replacing secondary batteries such as nickel-cadmium, nickel-metal hydride, and lead-acid. [0004] In the traditional power supply system with a backup battery pack, the management is mainly for the lead-acid battery pack. The management method ...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 张鹏
Owner SHUANGDENG GRP
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