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,

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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