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A battery balance management system

A management system and battery equalization technology, which is applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of multi-balancing time and low efficiency, and achieve the effects of high balancing accuracy, high acquisition accuracy, and fast balancing speed

Active Publication Date: 2015-12-02
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually requires more equilibration time and is less efficient

Method used

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  • A battery balance management system
  • A battery balance management system
  • A battery balance management system

Examples

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Embodiment Construction

[0030] Such as figure 1 Said, a battery balance management system, including a main control unit, a plurality of acquisition modules, a plurality of control modules and a signal bus, the acquisition module and the control module are respectively connected to the main control unit in communication, the acquisition module includes a temperature acquisition module and a voltage acquisition module, the control module includes a balance module and a fan control module, the signal bus is electrically connected to the acquisition module and the balance module, and the balance module includes a charge and discharge controller, a current controller, a charge and discharge circuit and a balance A power supply, the charge and discharge controller, the current controller and the equalizing power supply are respectively connected to the charge and discharge circuit;

[0031] refer to figure 2 , the charge-discharge loop includes a discharge loop and a charge loop, the discharge loop incl...

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Abstract

The invention provides a battery equalizing management system, comprising a main control unit, multiple collecting modules, multiple control modules and a signal bus; the collecting modules and the control modules are respectively communicated with the main control unit; the collecting modules comprise a temperature collecting module and a voltage collecting module; the control modules comprise an equalizing module and a fan control module. The signal bus is electrically connected with the collecting modules and the equalizing module. The battery equalizing management system has independent battery collecting units and can monitor the basic parameters such as pack end voltage, current, temperature and monomer voltage of the battery pack with 48 batteries in real time, the collecting precision is high and the computation functions of SOC, SOH and the like of the battery pack and monomer battery are realized; independent battery equalizing unit is arranged, can be used for performing equalizing management on the monomer batteries, and can support the equalizing of 48 batteries; the equalizing precision is high and the equalizing speed is fast; after equalization, the consistency value of each monomer voltage is smaller than 1% and the capacitance deviation of each monomer voltage is smaller than 2Ah.

Description

technical field [0001] The invention relates to the field of battery equalization, in particular to a battery equalization management system. Background technique [0002] Electric vehicles, energy storage power stations, electric bicycles, etc. all need to use battery packs composed of series-connected single cells to meet the needs of high voltage, so any effective use of battery packs has become a key issue at present. Although lithium-ion battery technology has made great progress in recent years, and the various performances of lithium batteries have been significantly improved; however, the inconsistency between single cells in lithium battery packs still exists widely. There are differences in various parameters of lithium batteries in the production process, and these differences are manifested as inconsistencies in the internal resistance, capacity, open circuit voltage, charge and discharge voltage platform, etc. of lithium batteries. With the increase in the numb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 伍发元吴三毛裴锋王浩刘爱华毛荣军张文华
Owner STATE GRID CORP OF CHINA
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